Resolution A.744(18)

Adopted on 4 Nnvember 1993 (Agpnda ítem 13)

GUIDElINES ON THE ENHANCED PROGRAMME OF INSPECTlONS DURING SURVEYS OF BULK CARRIERS AND OIL TANKERS

THE ASSElvlBLY,

RECALLI.'\~G Article. 1 ;(j) uf the Convention on the. Inll':'rnational Maritirnc Organi/<'Iliun concerning the functions uf the Assembly in relation In regulations and guidelilles cOllcerning maritimc safety and Lhe prevention and control or marine pollution from ships,

RECALLlNG ALSO resollJlion A71 J(l 7) on Safety 01 Ship,> Carrying Salid l3ulk CargoP~, by which it specificd intf'rirn IIU'd'oures to be takcn lo improve the safety of ships canying soliu bulk cargoes,

RI-CALLlNG FURTHER its rcquest lo Ih!:' Maritime Safety Commitlef' lo carry out its work on the safely uf ships

carrying salid bulk cdrgoes with high primity anrl lo develop, inter a/ia, require.rnel1t~ for the enhanced progr<'lrlune of survey oi such ships,

R[CALLlNG ALSO that by 1-e.<;ollJlion MEPC52(32) the Marine. Fllvironment Protection COllllllillee adopted amendlnf~nts lO lhe Annex to the Protocol of -1978 relating to the Intf'rnalional Convention for the. Prevention of Pollution froln Ship~, 1973, regarding new I-egulali()n~ -1 3F and 13G und rclated an1t'fldments to Annex 1 al MARPOL 73/7/::! to improve the INluirements for the dcsign and corl~lruetion of oil tankcrs to pl't-'vent uil poJlution in the eve.1l1 of eollision or stranding,

NOTING that. in accor-danCl--' with the aboye regulation 11(;, truue oil tankers of 20,000 10m deadweight and aboye and pmdLlet carriers of 30,000 10n ... deadweight and aboye shall hl--' subject to the cnhanced programme of inspcctions, thf' ~cope and frequency of whirh ~hdll at least comply with tl1f' guidelines devcloped by lhe Organization,

RECOCiNl¡INC ¡he need to also provide guidelines on the enhanced prograrnrne of inspections for all oi! l,mkers in arder to furthcl- prOlllote safety and marine pollution prevention,

HAVIi\jG COr--.,'SIDERED the r!-'(ummendations madc by thf' Mdritime Safety Committee al il" ~ixty-second scssion ami lhe Marine [nvironment Prolf'clion Committee at its thirty-fourlh se~sion,

1, ¡\[)()PTS',

.1 1111--' Guidelines on the Enhanced Programme of Inspections During Surveys oi 13ulk Carricrs, sel out in ;:¡nncx A to lhl--' pre~ent resolution, il.nd

.2 the Guidelincs on the Enhell1ced ProGramme of Inspeoinm rJuring Surveys of Oil Tanker.;." ~et out in anllf'X R Lo the present rcsolutiOIl¡

2 INVITES Covernrnl:'nt~ to apply the Cuidelillf'~ el.., <,oon as possiblc to all bulk f drriers and oí! tankcrs respp(.lively;

_~. REQUESTS the MJ.ritime Silí!--'Ly Committee and thc Marinf' Fnvironment Protection Commillee tu keep the Cuidclines under review and update them a~ necessary, in thc light of t-'xperience gained in their appli¡ dLion,

Rpso/ution A.71'I(UJ) - 49

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Annex A

GUIDELlNES ON THE ENHANCED PROGRAMME OF INSPECTIONS DURING SURVEYS OF BULK CARRIERS

1 GENERAL

1.1 Applicatiorl

1.2 Definition~

1.3 5c(lp~ nf surveys

Contents

2 EN HAN CEO SURVEY CARRIED OUT DURING PERIODICAL SURVEY

2.1 General

2.2 I1ry-dm k survey

2.3 Tdnk corrosion-prcvention system

2.4 H .. lch cover·s and coamings

2 . .'1 Exlent ot' ovcrall and close-up surveys

2.h Exlent of thickncss measurements

2.7 Extent of tank pressure testing

3 ENHANCED SURVEY CARRIED OUT DURING ANNUAL SURVEY

1. I General

1.2 Exalllination of the hull

.1 . .1 Examination of hatch covers Jnd (odrnings

3.4 Ex¿¡mination 01' cargo hold~

3.5 Examination of ballast tanb

4 INTERMEDlATE ENHANCED SURVEY

4.1 General

4.2 Ballast tanks

4.3 Cargo holds

4.4 Extent of thicknes,", m~d~u['elllents

5. PREPARATlONS FOR SURVEY

5.1 Planning

5.2 Conditions fnr survey

5.3 Access to ~trlJ("[lJres

5.4 Equipment for survey

5.5 Survey di Sed or at anchorage

50 - Resolution A.744(18): AmlPX 11

1-

1} DOCUMENTATION ON BOARD

6.1 Gerwrill

6.2 Survcy reporl file

0.1 Supporting docunlf'nl~

6.4 Rf'view oi documcntalion {)n board

7 PROCEDURES FOR THICKNESS MEASUREMENTS

7.1 Gener,.¡1

7."2 Certifrcation uf thickness measurcrnenl ("{)mpany

7.1 Reporting

8 REPORTING ANO EVALUATlON OF SURVEY

8.1 EVilluation of survcy report

8.2 Reporling

Annex 1 Requirf'ments for closc-up surVt~y <11 periodical surveys

Annex 2 Requirt'rnents for thickness mea~lJrpments at periodical SlJrvpy~

Annex 3 Owner's in~pt'ction report

Annex 4 Principies for pl<lnning documcnt

Annex 5 Proccdures for cprtification of a cornpany !-'ngaged in thickness nlPil~urernent of huI! strucllJrf'~

Annex o Reporting principle~

Annex 7 Condition evalualion report

Annex 8 Recornmended procedurf's for thickness measurt'rnents

Appendix 1 General [ldrti("ulars

Apppndix 2 Reports on lhickness measurement

Appendix 1 Guidance on tbickllP~~ measurement

Rf:"¡(Jlution A.744(18): i\nnex A-51

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1 GENERAL

1.1 Application *

Guidelines on the enhaflced programme of ifl~pections during survey" nf bulk carriers

1.1.1 The Guidplines should apply to ~urvpys of hull structure ami piping systems in way ()f cargo holds, l'oírprrlams, pipe tunnels, void "paces within the cargo Ipngth arca and all ballast 1;;lIlks. Thc surveys should be carried out during the surveys prescribed by the 1974 SOLAS COIlVPntion, as amended.

1.1.2 The (juideline~ C(1I11a.in the extent of examirldlÍon, thickness mea~urernf'nts and tank testing. Thp. survey should Lw extended when substdfllia.1 corrosion and/or ~trurllJtal dcfccts are found Clnd include additiona.1 closc-up survey wherr rlf'CeSsary.

1.2 Definitions

1.2. f Bulk carrier is a ~hip which is constructed gPller ally with single deck, lllp side tanks and hopper ~ide tanks in cargo ~pa.ces, and is intended prirna.rily to carry dI)! cargo in nulk and include,; sudl lypes as ore carril:'r" and combination carriers+.

1.1.2 Balla.',/ /¡¡nk i5 a tank which i~ u~pd 1m water ballast and indudes side ballast tank~, hallast double­bollnrn spaccs, topside tanks, hopper sidc tanks and peak tanks.

1.2.3 Spd(P'i are separate compartrnt-'nls including holds and lanks.

1.2.4 OveraJ/ ~urvpy is a survey intended lo report on the overall (ondition ot the hull stnH IlJre and determirw Ihe cxtcnt of additional clnse-up surveys.

1.2.5 Close-up ~(Jrvpy is a survey where tfw details of structural lurnpnnents are within thl:' (lose ViSUill ins[JI:'Clion r·ange ot the surveyor, i.p. prcferably within rf:'dl h nt hand.

1.2.ú Transvl::'r~p 'ipetion includes alllongiludinal members such d~ plating, longitudinals ami girders at the deck, side and bottom, inner bollom and hopper side pldling, longitudinal bulkhedd~, and bottom plating in top wing tanks.

1.2.7 Rcprcsentatlve ~Pd(t''i are those which are I:'x¡lPCled to retlect the condilin!l of othcr spaces uf sirniléll" type and service and with similar corro~i(Jn-prevention system~. When sclecting represenléllive spaces, accollnl should be taken of the ~prvir.e and repair hi~tory on board and identifiable critical andjor suspect areas.

1.2.8 Suspect Jreas are locations showing substantidl (ollosion and/or are con~idpr·ed by the surveyor lo be prone to rapid w<lslagc.

1.2.Q Suhstantial corrmion i" an extent of corrosiol1 ~tJr.h that assessment of ulrrosion pattern indicdte ... a. wastage in excl'~S oi 75% of allowabll:' rTldrgins, but \-vrthín accl:'pl,lhle limits.

, lhe intplltion 01 Ihese GuidehrlC' is lo en",r" thal an approflndl" l"v('1 ni I"Pvif'w (JI plans anu dut.ur,,~·nts i, ("onrlucted ,1Ild corl";I,,rr~\" In applica¡ion 1> dLl~rrl("d <;LJ,h pl-;¡luatiot1 nt ,urVl":i reports. 'UTVf'V programme" fll~rrrllng d", Llments, Ne. Ihuuld I'l· CJ"if'd OUT al the rTrdrr<1f,cri,lll"vf'1 oi lhe Admlni,trdlr"[l 01 org.,ninlion recognizeu by ll'l' Adlllilli'lraliorl.

+ rOl ("()mbinatlorl '-<1"''''' addition;¡1 Tf'quiremE'nl5 are ,pt·LlIICd in ti"., Cuirlelincs on Ihe b,h,LlI('d Programme 01 Impedl"'" DUllllg ~nrv"ys íor 0,1 T,Lllk('" ,,,1 Ollt in annex H to lhe pre5C'nt I"P~oluti()n.

1j2 - Rcsolution A. 744( 1 fl): i\nnex A

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1.2.10 Corrosion-prevention system is normally considered cither:

.1 a íull h,ud CO<'llillg "upplernented by anodes;

.2 J full hard coating.

Other coating systems (e.g. 50ft coating) may be considered acceptablc as altcrnativcs providcd that they are applied and maintained in complialH p wilh lfll:' IIldllufdLturer\ ~peeifieation.

1.2.11 CUdting cunditíon is defined as follow5:

GOOD condition with only minor spot rusling;

FAIR condition with local breakdown of coating at edges of stiffeners and wcld connections and/ or light rusting over 20% or memo. of art~a~ lJIH!pr ("oll"iderdliurl¡ bul le~s than as defined for POOR condition;

POOR cOlldition with gpneral brpakdown oí cO<'lling over 20°1<. or more of ó1reas or hard seale at ·10% or more oi areas under considerabon.

1.2.12 Critical structural arcas arc locations which have been idenlified from calculatiom lo fpqlJirp lI1ol1iloring or frum the service histOly of the subject ship or from similar or sister ships to be sensitive to cracking, buckling or corrosion which would impa.ir Ihe .,Irucluri'll inlPgrily of IllP ship.

1.2.13 Cargo fpnglh awa io,; lhdl pdrl oí lhe ~hip whieh ineludes all cargo holds and adjacent areas including fuel tanks, cofferdams, ballast tanks and void spaces.

1.2.14 fntermedíalp enhancpr! ~lJrliPy i~ rll1 t'llhdl1U:,d ~urvey edrried out either at the ~eeond or third annual survey or between these survcys.

"1.3 Scopt' of survt'yS

1.3.1 Pnor to inspection. the surveyor should examine the completeness of documenta tia n on board, and its contellts as a hasis fOI" lhf' SlJrVt'y.

1.3.2 When a survey results in the identification of significant corrosíon or ot significant structural dcfects which, in the opinion of Ihe SUI"VPyor, will impi'lir lh!:' -.lruclural integrity uf lhe shíp, then remedial action, in consultation with the Administratíon, should be agreed and irrrplcrrrcntcd befOl"e the ship continues in servie!:'.

2 ENHANCED SURVEY CARRIED OUT DURING PERIODICAL SURVEY

2.1 Gent'ritl

2.1.1 The enhanced survey may be commenced ilt thc fourth annual survey and be progressed during thp SUf( t'pdillg yedr with a víew tu eumpletioll by the fifth anníversary date.

2.1.2 As part of the preparation for the enhanced survey, thc thickncss measuremcnt and survcy progranllllP shollld hp d!:'dll wilh in ddvdllU:' uf lbe enhdnced survey. The thickness measurement should not be held befare the íourth annUill survey.

2.1.3 The survey should include, in addilioll 10 Ihe rNluirplllt-'nlS ()f 1111-' cHHllJrll ~lJrvey, eX(lrTlinatiun¡ tests and checks of sufficient extent to ensure that the hull and rclatcd piping is in a satlsfactory condition and is fil íor ils inlpnrled plJrpmt' ím lhe rrew periud uf vdlidity of the Cargo Ship Safety Construction Certificate, subjcct to proper maintenance and operation and to periodical surveys being carried out.

2.1.4 1\11 cargo holrls, IJall,lsl léiJlb, pipl:' IUl1Iwl", cofferdarm amI vuid spaees bounding cargo holds, decks and outer hull should be cxamined, and this examination should be supplernented by thicknpss

Resolution A.744(HJ): Annex A - 5J

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measurement and testing as deemed necessary, to ensure that the structural intcgrity remains effective. The examination should be sufficient to discover substantial corros ion, signiflcant deformation, fractures, damages or olher slruclural deterinralÍnn.

2.1.5 AH piping systems within the aboye spaccs should be examined and operationally tested under working conditions to ensure tha! their condition remains satisfactory.

2.1.6 The ~urvey extenl of cornbined ballasl/cargo holrls ~houlrl he f'Valllaled, hased on the records of ballast history and extent of the corrosion-preyention system provided.

2.1.7 The survey extent of ballast tanks converted to void spaces should be specially considered in relation lo Ihf' reqlJirelllenl~ fnr halla ... 1 lanks.

2.2 Dry-dock survey

2.2.1 A survey in dry-dock should be a part of the enhanced survey during periodical survey. There should be a minimum of tvvo inspections of the outside of the ship's bottom during the S-year period of lhe certificate. In all cases, the maximum interval between bottom inspections should not exceed 36 months.

2.2.2 Alternate inspections of the ship's bottom not conducted in conjunction with the enhanced survey during periudilal ~urvey rnay be carried uul wilh lhe ship afloa!. Spf'cial consideration should be given to ships of 15 years of age or over before bcing permittcd to have such inspections. Inspections of the ship afloat should only be carried out when the conditions are satisfactory and the proper equipment <lnd sllitahly qualiiied staff are available.

2.2.3 lf a survcy in dry-dock is not complcted in conjunction with the enhanced survey during periodical survey or if the 36 month maximum interval referred to in 2.2. 1 i~ not complied with, the e argu Ship S<lfety Conslruclion Cerlificalf' ShOllld cease lo he va lid until a survey in dry-dock is complctcd.

2.2.4 However, in order to allow time for transition to the enhanced inspection system, until 6 July 1 ~97, the Administration with a sLlrvey cyele of 4 years or less m<ly C<lrry out dry-dock ... urvey~ s¡.>par¡:¡lely from lhe enhanced inspections during periodical survey. For ships to which this applies, thc cnhanced inspections during periodical survey should be conducted at facilities which possess the capabilities necessary to properIy conduct lhe exarnindlions and le~ling rf'quired, and all other requirements of the enhanced inspection guidclincs should be met.

2.3 Tank corrosion-prevention system

2.3.1 Where proYided, the condition of the corrmion-prevention sy~tern of balla~l lal1k~ ~hould hf' examined. For hallast tanks, exduding double-bottom tanks, whcrc a coating is found in PUUR. cond!tlon as defined in 1.2.11, and it is not renewed, or where a coating has not been applied, the tanks in question ~hould be eX<lmined <lt annU<l1 inlervals. Whpn such hreakdown oi coating is found in ballast double-bottolYl tanks, or whcrc a coating has not been applicd, the tanks in question may be examined at annual intervals. Thickness measurement should be carried out as considered neces~<lry by the ~urveyor.

2.4 Hatch covers and coamings

2.4;1 A IhOrollgh inspf'ction of the items listed in 3.3 should be carricd out.

2.4.2 Random checking of the satisfactory operation of mechanically operated hatch covers should be made, including:

.1 stow<lge <lnd ~ecurif1g in upen condilinn;

.2 proper fil and effidency of sealing in closed condition;

54 - Nesolution A.744(J8): Annex A

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.3 opel-ational testing nf hydraulic and power components, wires, chains, and link drives.

2.4.3 The effectiveness of sealing arrangements of al! hatch covers by hose testing or equivalent ~hould be checked.

2.4.4 Thickness measurement of the hatch cover and coaming plating ami ~liffer1ers ~hould be carried out as given in anllf'X 2.

2.5 Extent of overall and dose-up surveys

2 .. 1).1 An overall survey of all spaces excluding fuel oil tanks should be carried out al Ihe fwriodical ~urvey. I-uel oil tanks in way ot cargo holds ~h(Juld be ,>ufficiently examined to ensure that their condition is ,>ati~factory.

2.5.2 Each periodk:aJ slJrVt-'y ~hould include a dose-up examination of sufficient cxtent to cstablish the condition of the shell frames and their end attachments in all <" .'lrgn hold~ and ballast tanks as indicated in annex 1.

2.6 Extcnt of thickness measuremenls

2.6.1 The requirements for thickness measuremcnts at the per¡odical survey arf' givel1 in drHleX 2.

2.6.2 Representative thicknf's~ lI1ea~urerT1ent~ to determine both general and local IcvcIs of corrosion in the shell frames and their end attachmcnts in all cargo holds .'lnd halla,>t tanks shoLlld be carried out. Thickness Il1pa"urernent ~huuId also be carr"led out to determine the corrosion levels on the transver"e bulkhead plating. Thc thickness measurelllenl" may be di~pensed with provided the surveyor is satisficd by the cluse-up examination that there is no structural diminution, and the coaling, where applied, remains cfficicnt.

2.6.3 The surveyor may extend the thickness measurcments as deemf'd Ilect:'s"dry.

2.6.4 For areas in spMe" where cuatings are found to be in GOGO condition as dcfincd in 1.2.11, the extent of thickness measurcments accordjng to annex 2 m.'ly be ~pecially considered by the Administration.

2.6.5 Transverse sectium shuuld be chosen where the largest reductions are suspectcd to occur or arp revealed from deck plating mcasurements.

2.7 Extent of tank pressure testing

2.7.1 AII boundaries of ball.'lsl l.'lnk~, deep tallb and cargo holds used for ballast within the cargo hold length should be pressure-tested. Reprcsentativc tanks fDl" fresh water, fupl nil amllubrication oil should also be pressurf'-lp~lf'd.

2.7.2 Generally, the prcssurc should correspond to a wa.lt'r level to the tup uf hatches for ballastjcargo holas, nr lo the top of air pipes for ballast tanks or fuel tanks.

3 ENHANCED SURVEY CARRIED OUT DURING ANNUAL SURVEY

3.1 General

3.1.1 The ~urvey should consist of an examination for the purpose of cnsuring, as tar a" prarlic,hle, that the hull hatch covers, waming" and piping are fI1dintained in a satisfactory condition and should take into accuunt the service history, condition and extent of the corrosion-preVPlllinrl ~ystern uf ballast tanks and areas identifiexJ in Ihp survey report file.

Rt-'~olution A.744(18) .. Annex A-55

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3.2 Examination of thc hull

3.2.1 [xamination of the hull pldlin¡,; ;'Hld il~ dosing appliances should be carried out as far a~ can be "een .

. 1.2.2 Examination oi watertight penetrations should be carried out <lO;¡ f.1r .1S pr-acticable.

3.3 Examination oi hatch covers and cuamings

3.3.1 11 shnlJld be confirmed that no unapproved changes have been ITl(-ld!:' In lhe hatch covers, hatch coamings and their securing and ~ealing uevÍLe" ~il]([-, lhe last survcy.

3.3.2 Wfwrf' l1lechanically opcrated stccl covers are fitted, the sati"fdclory mndilinn of the following should be confirmed:

hatch covers;

- Li¡,;hlnes<; devices of longitudinal, transverse and intermediate cro,,~ junrliom (gaskets, gasket Ilps, compression bars, drainage channel,,);

damping devices, retaining bars, cleating;

chain or rape pulleys;

guidl-'<¡;

- guide raíl" ;;rnd lrdck wheelsi

- stoppers, etc;

wires, chains, gypsies, tensioning device<¡i

hydraullc system essential to closing anu selLlrillg;

satety locks and retaining devices.

3.3.3 Where portable lUVer\ wnnden or stccl pontoons are fitted, the satisfactory conuiLion nf lhf' fullowin¡,; should be confirmed:

wuudt-'n rnVf'r<; and portable beams, carrier's or sockets for the port;;rblt-' f)[-,ilnl, and their securing deviccs;

sleel pontoons;

deat", bdLl!:'ll<; dnd wedges;

hatch securing b;;rr." dnd Ihf'Ír securing dcvices;

loading padsjbars and the "ide plalf' edge;

- guide plates and chocks;

- compression bars. drainage channels and urain pi¡)!:'" (ir dny).

3.3.4 If considered nelt'''~.-'Iry hy lhe survcyor, the effectivcness of sealing arrangement" of;;rll h.-rtrh rovers should he confirllled.

3.4 Examination oi cargo holds

.3.4.1 For hulk carriers aver 10 years of age, an overall survey uf d reprp~f'ntative torward and aftcr cargo hold should be carried out where this level or SlJrVl"y reveals the need for remedial measures, the survey "hould be !:'x!l:'fHjpd lo inrludc an overall survey of all cargo hold~.

56 - Rcsolution A, 74 1(78): Annex A

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3.4.2 Fm bulk carrit-'r,> ()ver -15 years of age, the iollowing should be (,mied uut:

.1 overall survey of .:111 cargo holds¡ ami

.2 clOSL'---Up examinali()1l uf ~ufficient extent to estilblish the condition of Ihe luwer region of the shell (rames and their end Jttachments in a fmward c<lrgu hold. Where this level of survey reveals Ifw need for remedial mf'éI~ureS, the survey should be extended to includp <l duse-up ~urvey of all Cdrgu holds.

J.S Examination oi ballast tanks

.'l.}).1 Examination of ballast tilnks should bf' carrit-'d out when required as a consequence ot the t"t"sLJI¡.., uf the periodical surwy drld intermediate enhanced survey. When f'xlell"ive corrusion is found, thickness measurements should be carrif'd OlJl.

4 INTERMEDIATE ENHANCED SURVEY

4.1 General

4.1.1 Those items whlch are ildditional to Ihe l"t-'flllirernents of the annual survey may be sUlveyed eilher dt the second m Ihird <:HlIllldl survey or between these surveyS.

4.1.2 In Ihf' ¡-d~e uf bulk carriers over J years of age the inlernwrJidle enhanced survey should inc!ude, in addition to the requirements of Ihf' anrlll<ll ~urveys, an examination oi the iterns spedfied in 4.2, 4.3 and 4.4.

4,2 Ballast tanks

4.2.1 An overall surVl-'y uf representative ballast tanks sclected by the surveyor ~huuld be carried out. ror ships over 10 years of age, all ballasl lanh "huuld be examined. If such inspections rewal nu vi~ible structur-al df'ft-'{ I~, lhe examination may be limitcd to a verificalion tllal lhe coating remains efficient.

4.2.2 Where POOR coating condition as dcfincd in 1.2. J J, Ulrrmion or other defects are found in bailas! tanks or whcre a coaling fra~ Iml been applied írom the timc of construrtion, Ihe examination should be extended to other ballast tanks of thc sallle Iypp.

4.2.3 For ballast tanks exc!uding doublp·bollolll lanb, where a coating is found in POOR cnndiliol1, a~ dcfined in J .2. 11, <lr]d it i~ not renewed or where a coating has lu)l been applied, the tanks in qucstion should be examined at annual inlf'rvak When such breakdown of coating is found in balld,>1 double-bottolll tanks, or where a cuating has not been applied, the tanks in que~tiun Illay be examined at annual intervals. Thickness measurelllenls ~hould be carried out as considered necessary by Ihp. '>LJrveyur.

4.2.4 In additioll to Ihp rl:'quirernents aboye, afeas found suspect according lo 1.2.8 at the previous periudical survey should be subjcct to over .111 alld dme-up surveys.

4.J Cargo holds

4.3.1 An overall SlJrvey uf dll cargo holcJs, including il closc-up survPy of ~ufíi<-ienl extent, should be carried out to establish the condition of:

"hell frames ancJ their end attilchmcnts and Irallwer~e bulkheads in the forward cargo hold and onp othcr seleL Ip.d Glrgu hold;

areas found slJSpE'CI allurding to J .2.U at the prcvious pcriodical ~(Jrvey.

4.3.2 Where collsidered IlPte,,~ary by the surveyor .:15 a result of the overall ami c!ose-up surveys as described in Ij.J.1. the survey should IlP eXlpndl:'d lo inclucle a close-up survey of sufficif'nt pxlenl oí uther rcpreSf'lllalivp {-rrrgo hulds.

Reso/ution A744(lRi: AnrJf:'x A - S7

4.4 Exlent of thickncss measurements

4.4.1 Thickness measurements shuuld!J1:' carried out to an extent sufficient tu detern,irlf' both general and local corros ion level~ al areas subject to close-up survey, a~ de~uibed in 4.2.4, 4.3.1 and 4.J.2.

4.4.2 Tlle lhickness measurcments may be di~pen~ed with provided the surveyor is satisfieu by lhp close­up survey that there is no structurdl diminution and the coating, where applied, rf'tnains effcctivc.

5 PREPARATIQNS FQR SURVEY

.~.1 Planning

5.1.1 A specific survey progr dmllrt--' should be worked out in advance uf tfw periodical survey by the owner in co-uperdlion with the Administration.

5.1.2 Tire sUJVey programme should include (nnditions for survey, access to structure .. anri equipnrcnt for sUJVcys, taking into accuunl lhe requirements of annexes -1 ami 2 fnr close-up survcy and thickness measurerrwnls and tan k prcssure testing as descriIJed in 2.7 .

. 1).1.3 Altcrnatively, the close-up survl:'y in Ihis survey programme may be ba~ed nn a planning document, approved by the Adminislratinn, as described in annex 4. The plClrming document should comply with d prUCl:'dlHP fnr the appllcation of risk assessmenl develnped by the Organization .

. ~.1.4 The survey programme ~huuld lake into account the information includl:'d in the documentation on board, as desniIJeu in ó.2 and 6.3.

5.2 Conditions for survey

5.2.1 Tlw nwnel- should provide the necessary facililies for a safe exccution of the survey.

5.2.2 Tanks and spaces should be sale for C1ccess, ¡.c. gas-freed, ventilated, etc.

5.2.3 Tanks and spaces should In' sufticiently clean and free from wdter, ~ra.le, dirt, oil residues, ete., to reveal ~ignifi{ il.nl corrosion, deformation, fractures, ddrn~gf'S nr other structural deterioration. In parlicular this applics to areas which are subject tn thickness measurement.

5.2.4 Sufficient illumillalion should be provided to reveal ~igllifir a.nl corros ion, deformation, fracture~, dalTldl:\eS nr other structural deterioration.

5.3 Access to structures

.1).3.1 For overall survey, means should hp. prnvidcd to cnable the surveyor to I:'x~mine the structurc in a 5afe and practical wdy.

5.3.2 Fur clnse-up 5urvey, one or more of the foll()wing means for access, acceptable to the <;llrveyor, should be provided:

permanent staging and passages throu~h structures

- temporary ~tdging ;md passages through structures

- lifts ami lT10vable platforms

olher equivalent mcans.

')8 - Rcsolution A.71'1(lélr Annex A

5.4 Equipment for survey

5.4.1 Thicklless measurements should normally be Gl.rr-ied out by means oi ultrasonir test equipment. The accuracy of the equiprnent should be pl"Oven tu the surveyar as requirl:'d.

5.4.2 One ar more uf the iollowing fractun-'-detection procedures mi'ly be required ii deemed nl:'Lessary by thp surveyor:

- radiographic equiplm-'nt

ultra':>onic equipmen!

- rnagnetic particle equipllll:'nt

dyl:' penetrant

- olhl:'r equivalent means

5.5 Survey at sea or at anchorage

S.S.l Survey at sea 01 al dnchorage may be aUl:'pted provided the surveyor is given the necessary assistance from the personncl on board. Necessary precautiollS ano procedures for carrying uut the survey shuuld be in accordanre with 5.1, 5.1, 5.3 and S.4.

5.5.2 A communiratiun system should be .1rranged betwcen the sllrvey party in the spacf's and the respoll~ible officer on deck.

5 .. 5.3 Explosimeter, oxygen rneter, breathing appari'ltus, lifeline and whistles ~hould be at hand during Ihl:' survey. /\ safl:'ty checklist should 1)p. provided.

6 DOCUMENTATION ON BOARD

6.1 General

6.1.1 The ownf'r ~huuld supply and mainlairl (m-board documcntation dS specified in 6.2 and fd, which shoulJ be readily available for the surveyor. The cnnditiun evaluation reporl rl:'ferred to in 6.2 should include a trarlslation into I::nglish.

6.1.2 The ducumentation should be kept on board for the lifelime of the ship.

6.2 Survey report file

6.2.1 A survey report tile shuuld be a part of the documentation on board rnflsisting oi:

.1 repOrls uf structural surveys (allnex 6);

.2 condition evaluatinrl report (annex 7);

.3 thicknf''''" measurement rcports (armex 8); and

.4 survey planning docurnent according to principies in annex 4, where provided.

6.2.2 The survey report file shnuld be avaiJablc also in Ihe uwner's and the Admirli"tration offices.

6.3 Supporting documenls

6.3.1 lhe following <1dditional documentation ~huuld be availablc on hndfd:

.1 rnain structural plans nf Irulds and ballast tanks

Rf'~n/ulion AIH(18): An/lf'x i\ - 59

I

.2 previous rcpilir history

.3 cargo ami bélllilSt history

.4 inspcctions by ship's persurHlPI with rcfcrcnce to:

- structural deterioration in gPlleral;

- ICilkages in bulkheads dnd piping;

condition of coating or corrmioll"prcvcntioll system, if any. A glJidance for reporting is shuwn in armex 1;

and any other informatiun lhal would hclp to identify criticél] slruC\ural arCilS ilndjor suspect drl'dS r'Prjuiring inspecliun.

6.4 Review of documentation on board

6.4.1 Prior- to inspection, the slirveynr should examine the completen!:'.;;.;; of the documentiltion on blldrd, and its contents as a bd~is for the survcy.

7 PROCEDURES FOR THICKNESS MEASUREMENTS

7.1 General

7.1.1 Thickness measurelllt-'nls should normally be carried oul under the supervision of tfH-' 'iurveyor. Ilowever, tfw SlJrvf'yor may accept thickness IIlPélSlHelllcnts not carried out under his dircct supcrvision provided tha!:

.1 the lhickness mcasurements are cdrried out by a qUillifred company certifipd by an organization rccognized hy the Adrninistr'atioll,

.2 Ihe thickncss measurements are carried out within 12 months prior to complction of the perjodrcal surv!:'y spedfied in scction :2 or interrm-'diélte ellhanccd survey specified in spction 4.

The survcyor should recheck the rT1eél'iUremcnts as deemed necesSdry lo ensurc ilcceptable accurac y.

7.2 Certification of thil-kness measurement company

7.2.1 The thickness medSllrpments should be carried oul by a qualincd company certifit-'d by an organÍzatiofl rf'cognizcd by the Admini~trdtiorl ¡¡ccording to principies stated in drll1f'X S.

7.3 Rt>porting

7.3.1 i\ thickness rncasurement report ... Imulrl be prcpilred and submitted In IhE' i\dministration. The report should give the location ()f ll1easurcll1cnts, the thickness l1leélsured as well as correspunding original thickness. Fu¡lhermorc, thc report should give lhp date whcn the measuremenb wt-'re carricd out, type of Illeasuring cquipment name~ of pprsonncl ilnd their qualificdtion~ and be signcd by the operdlllL The thickness measurelllPnl report should follow the prim.iples as spccincd in the recomnlf:'r1(h~d proccdurcs for thickr1t-'~s Illeasurcmcnts set out in anm'x R.

7.3.2 The surveym ~hnuld vcrffy and countersign lflt-' Ihkkness mcasurement report~.

60 - Resolution A.744(713): Annex A

8 REPORTlNG AND EVAlUATlON OF SURVEY

8.1 Evaluation oi sUlvey report

8.1.1 The data and information on the structural condition of the ship collectcd during the survey shoulrl be cvaluated for acceplabilily imrl cnnlinued '>lrultllr<ll integrity uf the ship.

8.1.2 The analysis of data should be carried oul and elldorst-'{IIJY Ihe Adrninistration <lnd the conclusions of the analysis should form a part oi the condition evaluation report.

8.2 Rt'porting

8.2.1 Prindplt'~ for sLlrvey reporting are shown in annex 6.

8.2.2 ¡\ condition evallJalinn n--porl uf the ~lIrvey <lnd results ~hould be issued to the owner as shown in annex 7 and placed on board the ship for rcfcrcncc at future sUlveys. The condition E'vdllldliUrl report ~hnuld be t'ndorsed by the Administration.

Resolution A. 744(18): Anncx A 61

Annex 1

Requirements for close-up survey at periodical surveys

AGc ~ 5

(Al - 25% of frames in the forward cargo hold at representative positions.

(A) - SeleLled frarn!:'s in remaining cargo holds.

(H) - One transverse wen wilh as<;ocialed plating and longitudinals in tvvo representative water ballast tanks of each type (i.e. topside, hopper side or side tan k).

(e) - Two selected cargo hold transverse bulkllPa(Js.

5 < AG[ ~ 10

¿

(A) - 25% of frames in the forward cargo huid at representative pusitions.

(Al - Selecled franws in remaining cargo holds.

(13) - One transverse wen with associated plating and longitudinal s in each water ballast tank (i.e. topside, hopper side or side tank).

(B) - Forward ami aft transverse bulkhead in Orle side ballasl lank, including stiffening sy<;lelll.

(e) - One transverse bulkhead in each cargo hold.

(O) - Sclectcd cargo hold hatch covers and coamings.

(e) - Selected areas of del k plaling in<;idl-' jin!"' of hatch openings bf'lwppn cargo hold hatches.

(A) - Cargo hold tramverse ir dfTle~.

10<AGE~15

3

(A) - 25% of frames in all cargo hnld~.

(B) - AII lranwpr~e webs with associated rlaling and longitudinal s in each water ballast tank (i.e. topside, hopper side or sirle tank).

(C) - Al! transverse bulkheads in balla<;[ tanks, including ~tiff!:'ning syslPIll.

(C) - AII cargo flold transverse bulkheads.

(D) - AII cargo ha Id hatch covers and coammgs.

(E) - AII deck plating insidc line of hatch open¡ng~ between cargo hold hiltchcs.

(lJ) - lransverse web or watertight transverse bulkhead in water ballast tanks.

(C) - Cargo hold transverse bulkheads, platings, stiffeners and girders.

(O) - Cargo hold halch cover and coamings.

(E) - Deck plating inside line of hatch openings between cargo huid hatell!:'''.

62 - Reso/ution A.744(J8): Annex A

AGE.> 15

4

(A) - AII frames in all cargn holds.

Poinls (8) lo (E) retened to in column J.

,

Annex 2

Requirements for thickness measurements al periodical surveys

AGE ~ 5

~uspect :ccas

L_

J < ACE ,;.: 10

2

SusrecL óreas

2 Within Ih!""' ("<lrgu length area:

.-1 Two transverse sections nf deck platlng outside line of cargo hatch upenings.

_~ Ml:'d~Urement, far general asscssmcnt and recording uf corrosion pattern, oi thase structural lIIt'mbers

subject to closc-up sUlvey ilccording tu

annex 1.

4 Selected cargo hold hatch covers and coamings (plating and stiffcncrs).

5 Sclcctcd ar-eas of del k pldting in si de line of openings bctween ringo huid hatches.

6 AH wind drld water strakes within the cargo length Mea.

10 <: AGE ~ 15

J

Suspcct arcas

2 Within the cargo [ength ;:Hh¡:

.1 Each derk pl<lte outside [ine oi cargo hatch orpning~.

.2 Two transverse sections, one of which should 11f' in Ihe amidship area, outside line ot rargo halch openings.

) Measurement, for general assessmcnt and recording oí corrosion pattern¡ of those structur al mernbers subject to close-up survey acrording lo annex 1.

4 AII cargo hold hatch covcrs and coaming~ (pldting and stiffeners).

1) Al! deck plating inside line of openings betwel"n cargo hold hatches.

6 AII wind and water strakes within Ihe cargo length area.

AGE > 1 S

4

Su~pect areas

2 Wilhin the cargo length area:

.1 [ach deck plate outsidp line uf cargo hatch openings.

.2 Three transverse scctions, onp ()f which should be in the amidship ared, ouhide line of cargo hatch openings.

.3 !::ach bottolll pi ate.

::1 Points 3 to 7 referred In in colurnn 3.

1 Jl Selected wind and water strakes outside Ihe cargo length area.

-~-

Re~olution A744(W): Annex A - 63

Annex 3

Owner's inspection report

Structural condition

1- ----Ship'~ nJme: ........ , . , .

OWNER'S INSPECTION Rrf'()RI - ~truLturdllOll(..Iilion

I-or tank/holJ Nu ...

(iraoe ni ,teel:

rlpmpnls

p Bottom:

Siul':

~irJe framlll~:

I nngitlloinal hulkhead,:

Tran~vPr<;p

blllkhp;'Kk ---'---

Dcck: Bottom:

Rcpairs carried out c:!iIP lo:

Buckles

I Thickllcss measurement, CMriprJ out (date,):

Rcsulls in general:

Overuul' 5U1VCyS:

Out,tdlllIiJli\ uJllJilions of dass·

<:ommenl,;

~-lJate (Jf impelliull:

In~ppctprl hv: .

SignJture:

(!'1 - Resolutíon A.744(1R): /lnflex A

Siop: ......... , I_ongitudinal uulklwad:

Corro<;ion Coatin~ cumlill,!!1

Pitting ModitiCillion/ ()ther r('[1;¡ir --1

r

ArHlex 4

Principies for planning document

1 A pl<tnning document is íntended to ídentify ,ritkal ~Iruc!ur<tl areas and to stípulate the mínimum extent, locatíons and means far clo~t"-up ~urvey and thíckness measuremcnts with resper I lo ~t"ctiuns and inlern¡:¡1 "Iructure~ as well as to nominate suspcct areas.

2 ¡ he documcnt should bl"' wurked uut by the owner in co operation with the ¡\dmir1i~Lr atiun well In

arlvann:' uf the ~urvey.

:1 rhe basis fO!" llo1llinalion 01 ~pal"e~ and areas referred to in 1 is a risk assess1llf'nl in cU[1~ideratiun of possibll"' deteriuratiuns where the following clcments on Ihf' partilular ship are taken into account:

.1 df'~igll features ~uch as extent of high-tensilc stcel anri local dl:'laih.;

.2 former hislary available dt uwner's and Administration officcs with res¡1f'cl lo cnrrmiun, cracking, buckJing, indents and repairs for the pani,ular ~hip a~ well as similar ships;

.3 infornralioll frum same offices with respect to type of cargo, u."e uf different tanks/holds. corrosion-prevcnfron syste1ll and rondiliull uf cuating, ii any.

4 The degrf'f' uf criticality should be judged and decided on lhe ba~i~ uf recognized principies and practice.

5 The plCllllring ducument should contain:

.1 main pilrliclJlar~;

.2 plan of tanks/hoIds;

.3 list of tanks/holds with inforll1alion nrr u~e, prutection and condition of coating;

.4 currusiun risk nomination oi tanks;

.5 df'<;igrl ri ... k numination of structures;

.6 nomlnation oi tanks and areas rOl ( Ime-up survey;

.7 nominali()[] uf sections and structures for thickness nlf'aSlHPnH:'IlL~; and

.8 list of acceptablc corrosion all()w(lnce uf different structures.

1 Application

Annex 5

Procedures for certification of a company engaged In

thickness measurement of hull structures

Thjs guidancf' applie." ior certifícation of the company whjch inlf'nd~ lo engdge in the thickness measure ment ni hull structures of ships.

Rf'soJulion A.744(78): Annex A - 65

2 Procedures for certification

5ubmission of dl)cument~

2.1 The fulluwing documents should be submitted to an organization recognized by the Adminislration for approval:

.1 Outline uf Ihf' company, e.g. organization and m<lnagement structure .

. 2 Experience of the company on thickness measuremcnt of hull structure~ uf 'ihips .

.3 Technicians' career~, i.p. experience of technicians a~ thickrlf'ss mcasurement operators, Ipchnical knowlcdge and experience of hull structure, etc. Operators ~houlrl be qualified according tu d recognizf'd industrial NDT Standard .

. 4 Equiprnpnt used for thickness measurernenl such as ultrasonic testing rnachines ,md their maintenancejcalibréltion pro"f'durcs .

• 5 A guide fnr Ihi .. kness mcasurement operator~ .

. 6 Training programmes for technicidn.., for thickness measurement

.7 Measurement recurd format in accordance with recormflendf'd procedures for thickne~s mf'asuremcnts (see annex 8).

Auditing of the company

2.2 Upon reviewing lhp documcnts submitted with sati~félctory results, the company should be auuited in urder lo ascertain that the company is uuly organizf'd and managed in accorudncE' with the documents submitted, and eventually is .. apable of conducting thickne~~ rnea'iuremcnt of the huI! structure uf ... hips.

2.3 Certificatiull is ronditional upon an on-board uemfJnstration of thickness measurement a~ well as satisfactory rcporting.

3 Certification

3.1 Upon satisfactory resulb uf bolh the audit of the company referred 10 in 2.2 and the demonstration test~ referrl"d to in 2.3, the Administration or org¡mization recognized by the Administrdlinn should issue a Certificate of Approval a~ well d'l ,:¡ notice to the effect that the thickrH:'~'I Illpasurement operation system uf the cUlllpany has been certified.

3.2 Rl"newaljendorsement of the certifiLdl1-' ~hould be made at interval~ nol t:'xceeding 3 years by verification that origindl ( nnrlilions are maintained.

4 Report of any alteration to the certified thickness measurement operation system

In any case where allt:'ralinll to the certified thickness mea~urt-'Illpnt operatioll system of the cOfllpany is made, such an alteration should bt:' irlllllediatcly reported to the orgdni/alion recognizcd by the Administratiun. Re-aurlit should be made where deerned rwcessary by the organization recugni/ed by the !\rllll i 11 i s tI' a tion.

5 Withdrawal of the ccrtification

The certification may be withdrdwn in the following cases:

.1 where lhl" Illeasurements were improperly Ldrripd out or the results were impruperly reported;

.2 where thc surveyor found any df'ficiencies in the approved thickne~~ Illpasurelllent operatíon systems uf lhl" colllpany;

.3 where the company failed to report ally alteration rcferred to in 1\ to the organization recognized by the Adrnilli~lralion as required.

66 - Rt-'~olt1rion A744(18): Annex A

r

Annex 6

Reporting principies

Reporting formats should hE' wurked out individually by the Administration. As a principie Ihe following contcnts oi reports fur bulk carrier structures should be incJuded as applicahlp for the survey.

1 Type of survey (periodical survey, intermediate enhanced survey, élllnual survey, other)

1.1 Date, location, whplher ur not the survcy was in dry-dock 3nd whether or nol Ihe survey was complE'ted.

1.2 Date of the previous:

- hollorn inspection .......... .

dry-docking .

2 Fxtent of the survey

2.1 Identiflcation of overall surveyed spaces.

2.2 Where in each hnld close-up survey has been carried out, and means of access.

2.3 Idenlification of spaces and location of structures to be given with respect to the thickness measurements carried out.

2.4 Idcntification of pressure-tested spaces.

3 Rp~ults uf the survey

3.1 Coating condition of earh space (if applicablc). Identification uf tanks with anodcs.

3.2 Structural condilinn of each space:

identified space found in sdtisfactory condition. Othefwise identiflcation of ftndings which shuuld be corrected or recorded, such as:

corrosion: - structure Illernbers

type of corrosion (pitting, general)

extent

cracks (Iocation)

bucklillg (Iocation)

indents (Iocation)

The narrative report may be supplemellted by sketchesjphotos of damagesjrepairs.

3.3 Thickness measurement reporl endorsed by the attending surveyur.

4 Actions to possihle findings

4.1 Repair in identified spaces:

- structural memher

repair method

- repair extent.

4.2 Recorded findings considl"red not to necessitate immediate repairs. Memoranda for future impections and thickness Illeasurements should be given, P.g. for areas found as suspect with respect to corrosion (see 1.2.8 uf the guidelines).

Rcsolutioll A.744(18): Annex A - 67

4.3 Condition of classjflag State requirerrlt:'llls.

The ~truclurp of the rcporting contents may be difíerplll, depending on the report systern fur Ihe Administration.

Annex 7

Condition evaluation report

I"sued upon complction of periodical survey

Ceneral parti("u/¡¡r,

Ship's na me:

Port 01 regístry:

Dpadweixhl (Illetric tonnesl:

Date of build:

Datp of rTldjur <.onversion:

Type of crmvpr~lon:

_.--

Class/Administration irlpntlty numuer: Plevious class/Admini~tratlon irlpntity number(,): IMU nllmhpr:

National flag: Previous national flag(s):

Gro" lOllllage: Natiol1dl: \"le (1%'1):

Classification notation:

Owner: Previous owner(~):

The survey rpport~ anu uocuments listcd below have been rpvif>wpd by lhe undersigned and tound to be salisfactary

2 The periodical survey has been complete in du.orudllce with the present GLlideline~ on (date)

I Condition e~alua~;on rer~rt W[[lplelCd by

~ice

I ~ondition evaluation repor! veriGeu uy

I Otfice

Attachcd reparts and dncrlment~: 1) 2) ]) 4) 5) h)

68 - RcsoluUon A.71'¡(18): Annex A

Namc Sigllature

1 }atp

Name Si!o;llalurc

Uate

Tille

Tille

Contents o( condition evaluatiun repurt

Part 1 - C,enpral pilrlicul(H~:

I-'art :2 Kcport rcvicw:

Part J Close-up survey:

Part 4 Thicknp~ ... rTH:'dsurements:

Part 5 - Tank corrnsion-preverlliorr sy~tenr;

Part 6 - Repairs:

Part 7 Condition of classjflag Statc rcquirements:

Part 8 Memoranda:

Part 9 - ConclLlsion:

See front page

Whprt:' (-llld how survey was done

Extcnt (which tanksjholds)

Reference to thickness measurcmcnt rcport

SUflHlldry oC where measured

Scparatc form indicating the spaces wilh substantial corrosion¡ and corresponding:

thickness diminulinn

corrosion pattcrn

Separate form indicating:

local ion or rO;:¡lirrgjdll()de~

condition of coating (jf applicablc)

Identification of spaces/areas

Acccptablc dcfccts

Any point5 of attention for future survcys, c.g. for suspect areas

extended annual/intcrmcdiatc cnhanccd sur­vPy dLJP In Uldlillg breaktJown

Statcmcnt on cvaluationjvcrification of survey report

Re~ol[ltion A744( 18): Annex A - 69

Extract of thickness mpa~ur('mcnt<;

Refererlce is rnadp. lo thp. thickllP.sS mp.asurement report:

Position of substantially corroded tanksjareas 1

Notes

Thickness diminution [%]

Corrosion , pdLLerrJ

Substantial corrosion, Le. 75-100% of acceptable margins wasted.

P == PiLling C == Corrosion in general

70 - Resolulion /1..744(18): !\n/lf'x!\

Remarks: e.g. Ref. attached

sketches

r

Tank/hold corrosion-prevention system

I Tankjhold'

~NOS. Tankjhold corrosion­prevention ,

C:oaling <.:ündition 3 Remarks l

system- --

L J Note"

AII ballasl lanb <lnd cargo holds should be listcd.

C = Coating A = Anodes NP = No protection

Coaling condition according to the following standard.

GOOD

FAIR

I-'OOR.

condilion wilh only minar spot rusting.

condition with local breakdown nf coating at edges of stiffeners and weld connecliom andjor lighl ru.,ting over 20% or more oi .:lrc.:lS undcr consioeralinfl, but less than as defined for POQR condition.

condilion wilh general breakdown of coating over 20% or more nf <lrea" or hard scale at -10% or more of areas under consideration.

li coating condilinn "POOR" i" given, extended annuaI survcys should be inlroduced. This should be noled in part 7 of the Contents of condition evalualiorl report.

Rcso/ution A744(18): Annex A - 71

Annex 8

Recommended prol:edures for thickness measurements

General

Th",se procedures should be uscd for recording thickness measurernellh <l<; required by anncx 2.

:2 Reporting forms TM 1-Re, TM2-Re, TM.1-BC, TM4-SC, TM5-I:!C, rMú-IJC and TM7-BC, ~et uul Ifl

appcndix 2, should be used for recording thickness rne<lSIHPrllf'nls.

3 AfJfJerulix 1 conlains guidancc diagrams ilnd notes relating to the reporting forrn<; and lhe requir-e­ments for thickness measurement.

4 The reporting forms should, where appropriate¡ be supplerm'nlpd hy data pr-esentcd on structural sketch es.

Apppndix 1 General particulars

Appendix:2 Reports on thickness rneasurerrlPnl

Appendix:¡ C,uidance on thickncss mcasurement

71. - Reso/ution A744(18): Ar1flf-'x A

Appendlx 1

GENERAL PARTIC:UI ARS

Ship's mme:

IMO number:

Cla~sj !\dnlilli~tr dtion identity number:

Port of rcgistry:

Gross tonnilgc:

Deadweight:

Da1f' of build:

Clilssificatioll sodf'1y:

Nalllf' oí ( oJllpdny performing thickness mcasurclllcnt:

rhickness llleasurf'lllf'n1 (OJllpally certified by:

Certificate number:

Certificate valid from: . . . . . . . . . . . .. to ........ .

Place of Illpd~urernent:

First datc of rnf'd.surf'ITlPr11:

Last date of mCilsurClllent:

Periudica! survey*jintermediiltc enhanced survey* duf:':

Df'1ails oí rTlf:'d~Uremellt equipment:

C)ualificatioll ot operd1or:

Rf'pOrl IllJrllhf:'r: consisting of pagcs

N"¡rTle of operator: Nd.me of <;urveyur .

Signaturf' of oppr,.¡lm: .... Signa tu re of survf'yor .

Comp<lny officiill stamp: Administration: Officia! stamp:

I\esolution A. 744(18). i\nnf'X !\ - 73

I

¡;: , " " t g' e­¡;:

'" ~ ).

" " ~ ).

Report on thickness measurement of al! deck plating, aH bottom shell plating or side shell plating (1M 1-BC)

~h'~', n,lm~ IMO numl",r Clas; idcnll:y No. Reporl ~o,

,~-~~ ,-I STR,\KI'

POSITION -:-T Forward Readlng I J ,"'ft I{cacing_

~.

~ r::J-= .1--1t-H - ¡-T~ 1::- T I '-+-= =t- d--t-_ I! I H

t=F-~:·T\· ~+--+=1--+--1 ii-. -t-_ .~. ,. l--+--.

---;--

~

:=F 11th 1, ,. -

12lh ~ . . • ~ . ~ I . .1 . . . . " ~.~ Op~rator, >lgnJlUre Surveyor's ,ignatur~ . Nütes - sep {()üO\'>-ing pilgP

'" m

" e ~ o z ..., I ). --" n-" '" ro Z " [;::8: V> x S:'" m :> V> e

'" m s: m Z ...,

NOTFS

This report should be used for r!::'cording the thickness measurcment of:

.1 Al! strength oe.ck plating within the cargo length area .

. 2 Keel, buttum shel! plating and bilgc plating within the cargo length arca .

.3 Side shel! plating that is aIl wind ami water strakes within thc cargo length area .

.4 Side sheIl plating that i~ selected wind and watcr strakes outside the cargo length area.

2 The strake. positiun should be clearly indicated as foIlows:

. -1 For strength deck indicate the. Ilumber uf the strake of plating inboard fmm the ~tringer plate .

. 2 ror bottom plating indica te the number of the strakc of plating outlJocud frum the keel plate .

. 3 For side sheIl plating give number of thc strake. of plating beIuw sheer strake and Icttcr as shown on shell expansiono

J Only thc deck plating ~trdkes uutside line of openings should hf' recorded.

4 Measurf'Jllf'nls "huuld be taken at the forward and aft area" of aIl plates and the single mcasureJllf'nts recorded should represent the average. of multiple Jlleasurements.

Rf'.m/uliof) A744(J8): Annex A -- 75

~ ~-

'" ~ ¡s. o >-~ -±: 2' :> O O O X

~

Report on thickness measurement of shell and deck plating I:one, two or three transverse sections) (TM2"BC(1))

Ship', n<,~'" IMO nunbcr Class id~nt~\' 'Jo. I<ep",r N",

~n:cr-.GTII DrCK ¡\NI) SH~ER STRAK[ PIATI\I,'c' __ _

____ IYI<ST 11<:\r--S'vTR~~ "EC~ION AT¡'RAM[ NIJMBEr:._ --------;;;;-ONU fRANSVERS[ SfCTICr' Al ~R~ME ~~~1FIFR_ "TIIIRD TRANSVt~E S~CTIOr-.. Al F~AJ\',E NL'M~.FR_ _

_ I ~() Orig. (,Jugeu 1)1Ir1n,,-,or DIIllI~urln" Nn Orig. G~~W'd I Dlmmutlon D,mlClul,c1 t-..o. (h!,\- GaugE'rl DlrTllllUllon ¡ LJHrln.nor srRAKE -Ik P S Tlk l' S Th l' 5

~05ITI()N ~or 1 ~ I - De 1 .'1' ...

fettNLf=ml l' 5 TIll I ~,; Il'lm i" LEller (mm) p S mil! % mnc % Ld\cr (rrm)

, Sr, n~E'r [11~h _

1,1 ,rrilkc 1I1board I

;,d

3,d

"h

5th

t,th

711

mh

y\h

lOt~

11th

12th

mh I l' ----=t--1-- I --. 4th '1 , 1

Ll'nlre ,trJk" ,---= I --+-p -¡-ld-l _11-----'---~~ . . - -.l \. - 1 ---F _,---1 _JI 1-

Op,"",'10r< sign¿tur~ ~~rvt-,.n(, "gn.lt'J'~

L ---+1 I-J

l'I01e; ,~'" ("llcwm~ C"~l'

NOTES

This report should be used for recording thc thickness measurement of stre.llg1h de.rk plaLing and sheer strilke plating transverse sp.ctions:

Two 01' 11m·!:' secLion~ within the cargo length area, comprising the structural itcms (1 L (2) and (3) as shown on the diagram of typlcal transvcrse section indicaling longiludindl ami transverse members, in appendix 1.

2 Only the deck plating outside the line of openings should be rccorded.

J I he topside arCil compriscs dcck platinK stringe.r plale. ami ~he!:'r slrake (including rounded gunwales).

4 The. exact frame. slalioll of fTlea~Llrernent should be stated .

.s The ~ingle measurements recorded should represent the average of multiple measuremenls.

Resolution 1\.744(/R): i\nnf'x A - 77

~

Qj ,

;>o

~ g' !>

t ~ ).

el ~ ).

Ship', namc

-~

STKAKE POSIlIO'!

Report on thickness measurement of shell and deck plating (one, two or three transverse sections) (TM2-BOl)}

IMO nUrT'ber. Class ,dentlty r-.o.

~lI<ST TRANSVERSE SECTlQI'-' A T FRMiE NL'M~tK. .

R~¡¡ort No.

SHELL PLATIr-.C , SECOND TR".r-.SVERSE SECTI9_N Al FRAME NUMBER, . ¡ THIR? TRAr-.~VE~~ SECTIOI;'_AT FRAME N~'MBER:~

Diminution No. I Drig. GalJged Dimmution Diminu!ion I 1\0. Orig.. G~uged Diminulron Diminution No. Orig. Cauged Diminu!ion or lhk. f-- 1_ l' S or Thk. P __ ' _ S or Thk. P S

LeltH--j Imm) P S mm I % _1 ~12:' %! Letter (mm) pis mm % mm I % Letter (m.'ll) P S mm % mm -,,-,C""--C'o-"-·-,Ch-e-e-'--- -~¡-- , ~ strake

2m~

3,d

4t~

5th

6<h

7th

3<h

"h

,rnh

11th

12th

1:lth

!1 14lh

- 11,-I I I -+--+--+---+--- t-----j-----j

1 -j I +- 1 -, ~ 1 ,-----t---t- l_--+ __ ---'----+_

I --+1 ---+-1--+ --

-+-+--+---+-----jl - 1 -+ I li I '=t+ I I I

-~--+I --+--+-1

--!-+---+--+- t -~---+---1-+--+---+-~~ -

+-1---- I - - ~+-I ----i : 15th ~~

: 6th

-+--+--1 I 'nh

18th ~+-I ----+--+

19th --j -~-~+I-f--+-+---t +----i----j-----jl n

I i H I ~~

2()~h

keel strake

HUI.ÜMTOTAL

-+-1 --t--+--+-

lJperator, sigl~tur,= Surve'r'or's SlgrMure .'<ate; _ see Toú'()wing i"'ge

NOTFS

This report should be used for recording the thickness measurements of shell plating transverse sections:

Two or thrp.p. sp.ctions wi¡hin ¡he cargo length drea compri~ing the structural items (4), (5), (6), and (7) as shown on the diagram of typical transverse section indicating longitudinal and transvp.rsp. mp.mhf'r\ in appendix 3.

2 The bottorn area comprises keel, bottom and bilge plating.

J The exact frame station of measurement should be statcd.

4 Thc single measurements rp.cordp.d should represen! !he average of multiple measurements.

Rcsolution A.744(18): Annex!\ - 79

~

" I

" " F

t ~.

).

;;

'" 2'

~ '1 X

).

Report on thickncss measurernent of longitudinal members (onp, tWQ or three Iransverse sections) (TM3-Be)

SI",>" namc. IMO r~mber Cid" "knt;\)' 'Ju. ~f'PQft ha.

IIR~T TRANSVH';~ S~UION Ar FRAM~ '-JUMBER. I SfCO~-r~~~ANWER~E ~HTIO'l AT FI<;\.Me ~~,\1BER, __ _ THIRD TRANS\TRSE SECTIO,'J Al FRAM[ NUMIlER

I)iml~u',on

It",m I ? S ¡"In. P~ Item p s Orig! (~.lL.~"d DllninLtioll DItTII1J'ior JI 0"); G.dut\{:~ Ji'niru~on Diml~utloll Ong ~ (,~~g"d ~[)In"nJn()r

" l,k. " I hk. I I - N Thk ----- -- --~-", , I I "".. o. __ ,m¡-"I P S rnr:, '-"~ mm i ~" 'plml l' I S rrrn % ITlr~ ~', I~'~"~+ :> _ ~__ 11l~_~ rlm %

b· : _ Ir ---+ ~-I l' i! ! :

,;lkLCTL'RAL !v1EfI,',RFR

m I -+- t .- I TI·· - ,-1 .. -!. + h-=-I I·~_. ¡ .. I +-t+ -i---1--r--, . - --jl--+--+-

I -¡ ... I l ' -.1._1 ·1' T - I I 1- ¡ ----- I ,. ,¡, _ '_1

- 1 -- , . I ; ·-1 _ _ I ---+1- 1 - : - --!__ I!

.... 1_ 1-1--- ' i I I I I , I I ,- I I

' .- _ I ' I . -- , -.. 1 +---+-1 -+----+ T_

1 ,

f-----f I -

1

----1 I t

I

r _ -- I I i -+-+---1-

-L-

¡--, -¡--

J Op~"10rs "Gnature ~LJr""\'G""'S <lgnatJre. '\'01~, - ,ce fc,!I~'M~~ rk~<--

r

NOTES

This rcpart shol1ld be used fa!" recording Ihe tllickness meilsurcment nf longitudinal mcmbers al transverse ~f'c!¡uns:

Twu ur three sections wilhin the cargo length area, coll1pri~ing tlle structural items (R) to (20) as shown on the di.'Jgrdm uf typical transverse ~!:'ction indicating longitudinal and transverse member", in dppendix J.

2 The exact frame ~Idliun uf measurcmcnt sholJld be stated.

J Tho singlp rneasurements rccorded shuuld represent tllc average of multiple measurcment~.

Re'iOfulion A.741(1lJ): AnnCx 11 - R f

---,

'" ~

'" ~ ~ §' ,. :;;:

'" ~ ,. " " " " >

Report on thickness measurement of transverse structural members in ¡he cargo and balla"t lanks within Ihe cargo tank length (TM4-BC)

~hp" nanO'. 1,\10Ilurcoer (las_< identlly !'>o, Report N(j.

¡ r -¡--O I I - Cal1g,,~ I - Di,.,-,inu!ion - I - Dm'ecrioe - -1

~_~AL= _u~"~~{,, E;occl S<<Cbo,ml nm 1 % Imm L% ~

TANK DESCR!PTION:

LOC'I,T!ON OF STRUCTUI<.E: -- -- ----

~- -- -- -- - --- - - - - _. --

c----¡ -~- - ~E =+-==r= -=t -~ ----- ~- -=1==-+= _ =t - - _ =+=--3 ~---- 1- =-F+=t -_ * ==J ~ - --=- . [ - ----~- -- __ =1 =-f=I f----I +--.±- _--Iu[--I_,

i=~ I i

Operat,,(, ,Igralure SU"Jeyor', ,jgnature . Nor", - ,ee fofl,,,,,,ng pa~~

NOTES

1 This fernrt ~hould be used for rccording ¡he thickness measurcmcnt of transverse structural membcrs, cornprising the appropriate strurlural items (23) to (25) as shown on the diagram of typical tran'iVl:'r~e section indicating longitudinal and transverse mp'lllbers, in appendix 3.

2 Guidance for areas of mcasurement is indicated in tablcs 1 to 3 of nppendix 3.

3 The single mCilsurement~ recorded should represent thf' average of multiple mcasurements.

Resolulinn A744(18): Annex A - 83

-

¡;; I

'" ~ ~ §" ,. ;;: ~ ~

<o ~

;; " " " ,.

Report on thicknes~ measurement of cargo hold transverse bulkheads (TM5-BC¡

5hlp" name . 1r..10 number C:JS' id .. ~t ty N" Repo1 N"

l~ANK/H-OLl; I)_ESC~IPTIO~_' LOCATION Of STRUCTLJRE::

r --

t--1--1- -

1-­~-r=-

r_ 01""'''''Y'' "gnaturc

STRUCTLRAl COJ\',PONFW (I'L. ... TINGiSTlfHr-.ER:,

Sllrv~v.)r', sign.'tul'

] 0"''"" G'",,; ---,-- ~AME No - .~ , T,icknes5 [),minution I - -' --]

__ :mml --1 ~'"'' 1"",,,,,,," ,,,,,P ]- ~,o~' Dlml~Ulion ~ '_ f--- . mm ''----1 -. += '.--+ 1-= -~----+'-.. -1----1 J +- I J-~ 1-=1 +_¡- ,_E 1-·- 1 ----j ___ " -¡± ---l- -l-1_ .. 1

-+.--t -T "_-+- --J , __ t 1--

-. L I~t-t- -T-----1 -L 1 I =l -1_ +- 1 ._. _~ '~ '=1-_ '1-1

Noto ,=-,., . , - " ()IOw'-ngp",-",

NOTES

This rp.porl form sholJld 1.)1:' u~ed fur recording the thickness measurement of cargo hold transverse bulkheads.

1 Guidancc for arcas of mcasurement is indicated in tables ¡ lo .1 of dppendix 3.

3 The single mp.d~un:'¡¡H::,nh recorded ~hould represent the average of multiple measurements.

Resolution A.744(/8): Annex A _. 85

'" '" I

'" " " o ~ §" ,. t -2'

~ , " ,.

Report on thickness measurement of miscellaneous structural members (TM6-BC)

Shlp's name . IMO numh€r Clas; identity No. Rcport r--o.

STRL'CTURAL ."'IEMBER: SKETCH

LOCATION OF STRUCTURE:

Orig. Dlminution Thk 5 Descrlptlon (mm'¡ , s mm % mm %

--+--+1 --+--+_ -

------ ----------t +- +1-1----+-+-

O'Jerator', ,ign"ture Su,,,,,''',,', ,isnalure Notes - see ¡CJjJ'0wing p.¡ge

r

NOTES

Thi~ report ~hould be l/sed fur recording the thickness measurement uf miscellaneou5 structura! members including the structural items (28), (29), (30) and (31) as shown on thc diagram of typical transversp seoion indirating longilurlinal and trallsverse members, in <lpfJendix 3.

2 Guidance for areas of measurement is indicated in tables 1 to 3 of appendix 3.

3 r he single measurements rccordcd should represent the average of multiplc mcasurements.

Resolution A.744(18): Annex A - 87

o Z

I , e ¿~ : º ,

e "' , e

" E

¡ ,;R .~ ,

" ~ E

E

o , ,

-1---o , e

"

obc.' E 'oo_,,"

S ,

Ce

-E I ~-'i_,

,~ "'f---, E e E

o i'-,g o

"' .E E [ O E

88 ~ Resolution A744(18): Anf1l:'x A

-++---++--- -

.. _~+--c--+-

t--

r

NOTES

This repon should be used for recording thc thickncss rneaStHf'nll:'flt of:

- cargo hold transversf' fr',HIlI:''''; dnd

structural item number 34 as shown 011 the diagram of typical transverse section indi( iltil1g longitudinal and transverse membcrs, in appendix 3.

2 Guidance far areas of measurement is indici-lted in tables 1 to J of appcndix 3.

J I he single measurf'tnf'llls recorded "hould represent the average of rnultiplf' rm-'d.,urements.

\ \

/ /

Typical transverse frames in cargo hold. thlckness gauging area ®

Upper part

Mid part

Lower part

Non-typical transverse frame in cargo hold: thickness gauging area ®

Resolutian A. 744(1lJ): Anncx A - 89

Appenc/ix 3

GUIDANCE ON THICKN,SS MEASUR[MENT

-1 ypical transverse section, indicating longitudinal and transverse members

REPORT UN I ML H{

(2) ~1!E'"glh df'rk plalillg o ~trjnger plate

o Sheer ,trdk" o ~"I,o ,h,.11 plaling

o BlIge plating

o Bottom ,heil pl"I",~

(})K,',.lpldl"

REI'ORT (JI>. nvl~-IlC

@ DOllblc ¡'"II"", I,,,,k noolS

@ fOfl<lde tank trJn",prse,

@ Ilopper slde tank tr3nw',,"_",

@ @

Slnglf! or double skin

o Deck lon¡;lt"'¡",,,I, o I )~, k glrdf'rs

@ Sheer mdKe IQngiTudin,,"

@ Top,idc t.."k ,I"pll'~ pl,'llng

Kr~ORT O" TM3-0C

@ l"I",d .. tank ,Ioping plating longitudinal,

@ Ilottom longitudinal,

@B01tOm,-"lru,-'r',

® Hdg~ longitudinal;

RErORT O¡"- T'\';6-BC

® Hatch Cllcll!lHlg',

@ I )~, k platlllg belvl'een haT"hc,

@ II"t~h cm'e"

® Inner bulkhl',,'¡ I'l.,lll'~

@ @

'JO - Resolution A744(1(J): Annex A

@ Si,!" ',h,'1I 1"");JludIl1al,

0:) Inller bottom plating

@ Inner bottom lonl'.itu'¡II",I,

® Hopl"" ,,,1,0 pl .• llng

@ Hoppm Slde IQngitudinals

@ @

R[PORT ON TM7-BC

r

Transverse scc:tion outline

(To be used fOf longiluJinal and transvcrsc members where thC' typical transverse seclion i~ not applicablC')

o \

~ \---------------------------------------------------------"

-REPOK I (),'>j 1.',,1:' He ~/-I'()~ I 01'.' T,\13-BC

o Slrenglh dp,k rlatlllg o Deck longitudinal, @ ~Ide ,heillongiTudin.ll,

0 Stringer piole o I),·[k ~"d,'" ® l!lller holl"", I'L,I",~

o Slw~, ,I!"k[> @ Sheer ,Irdke IOllgllurhn.ll, @ Inner honom lonlllludmal, o Side shell platrng ® Tor,ide lank ,Ioping rloling @ Hopper "de plating

o Bilge r1dling ® 1"1""1,, I,,,,k ,I"p;nl: pl3ting longitudinJI, @ IloPIW' 'ILI~ 1""glll"II".,I',

o Boll"", ,1,,·11 pl,'lin~, @ Ilollom long,tudlllal, @ o Keel pldle ® B01l0m girders 6 e Hllg" 1,,,,gllurl,,,,.I,

REPORT ON TM+BC fü~()~1 ()r-; f,\I\6-HC R[PüRT ON TM/-BC

@ D()uhl~-IJCjlt"'" l."," n,,,,,, @ llat,h (oJmi!lgs @ Ilold Trames or diaphragm,

@ T()p"id~ IJnk transverse' @ Dcck rldting oet"een hatche_,

@ Hopp"r ,ide tonk lran"""e, @ H.'(, h "'V"",

@ @ Inner bul,hcad plating

® @ @

Rcso/ution A744(18): Annex A - ~7

r

Table 1 - Tf¡ic..kness measurement requilements

AGE ~ 5

1

1 Suspcct arcas

,

1

----

5 < AGF 0::.-:; 10

2

1 Suspect areas

2 Within the cargo Il"llglh area:

.1 Two IrilllSVl"rsl" sections of deck plating outside line of cargo hatch openillgs.

3 Mcasurcmcnt, for gener di asses .. rnelll <l[uJ rccording of corros ion p<ltLem, of Iho~f' structural members subjec I lo <"IOSI"-UP

survey in accordance wilh lilble 2 of Ihis appendix.

4 Selected cargo hold hatch covl"r-s and coamings (plating dnd stiffl"ners).

5 Sclccted areilS of deck plating inside linio' of opcnings between cdrgo hold hdLcllf'~.

6 AII wi[ul ,-H1d willl"r strakes within the carljo lenglh Meil.

92 - Resolution AI'I1(J 8): Annex A

----

10 < ¡\GE ~ 15

, 1 Suspect areas

2 Within the cargo Icngth arca:

.1 Each deck plate out~ide !ine uf uugu hatch openings.

.2 Two trilnsverse sections, ulle 01 which should be in Ihl-' ilrnidship arl"a, outside line of cargo halch opl"nings.

i Measuremcnt, tor ljeneral assessment and recor-ding of corrosion pattern, of those structural members subject to clo .. e-up survey in accordance with table 2 of Ihi~ ilppendix.

4 AII cargo hold hatch (over" ilnd coamings (plating and stiffeners).

.:; AII deck plating insidl" line ot openings between cargo hold hatches.

6 AH wind ilnd water strakes within Lhe C<lrgo Icngth ilrCil.

7 Sclcctcd wind and water .. tr<lke ... nlJlside the cargo length area

AGE> 15

4

1 Su"'pl-'cl ':Hl"il~

2 Wilhin Ihl" f ilrgo length area:

.1 I:.ach deck plate olJlsidl" line ot cargo hatch openings.

.2 Three transverse senions, one of which should be in the amidship arca, outside line of c<lrgo hatch opeings.

.3 Each bottom plate.

3 Points 3 to 7 refened tu in culuITlIl i.

!

;

I

T able 2 - Clme-up survey requirC'mC'nts

--L-S < AGI:. ~ 10 10 < I\GF ~ 15 ¡--~~[ > 15

~--------~, --- -------------------

(A) - 25% of frames in the forvvard cargo !lnld al representative positions.

(A) - Sclected frames in n-'fIldining cargo holds.

(13) - 011e transverse web with associatcd plaling ami longitudinal s in two repre~enlalive water ballast tanks of each typc (i.e. lopside, hopper side or side tank).

(e) - Two selected cargo hold transverse bulkhcads.

2

(A) - 25% of frame~ in the forvvard cargo hold at representative positions.

(A) - Selected frames in remaining cargo holds.

(13) - ünc transverse weh wilh associated plating and [ongitudirl..Jls in edch water ballast tank (Le. topside¡ hopppr ... ide or side tank).

(8) - Forward and aft tr¡:tnsverse bulkhead in one side ballast tank, including stiffening ~ystem.

(e) - One transverse bulkhead in CiKh cargo hold.

(O) - Selected ldrgo hold hatch covcrs and coamings.

(E) - Se]ec1NJ iHt:'dS of deck plating inside line of hatch openings between cargo hold

L hatchcs.

(A) - Cargo hold transverse frames.

(A) - 25% of frames in a1l cargo holds.

(8) - Al! transverse web~ with associated plating and Inrlgiludinals in each water ballast tank (j.e. topside, hopper side or side tank).

(e) - AII transverse bulkheads in dll ballast tanks, including stiffening sysle.Jll.

(e) - AII cargo hold lrdnsverse bulkheads.

(n) - AII cargo hold hatch covers and (na l11ings.

(E) - 1\11 deLk plating inside Hne of hatch openings ¡wtwl:'en cargo hold hatches.

(8) - Transvt:'rse web or watertight transversc bulkhead in water hallasl lanb.

(e) Cargo hold transver~f' bulkheads, platings, stiffeners and g·lrders.

(O) - Cargo hald hatch caver and cO..JlIlings.

(E) - Oeck plating inside line of hatch opellings belween cargo hold hatches.

Nalp" dnd sketches - see table :; of th·ls appcndix.

4

(A) - AII frames in all cargo holds.

(R) - AII transverse webs with associated pldling dnd longitudinal s in cach waler bdll;:rst tank (1.e. topside, happer side or­side ldnk).

(C) - 1\11 Iranwer~e bulkheads in all ballast tanks, induding stiffening system.

(e) - AII cargo hold transversc bulkheads.

(U) - AII cargo hold haldl Luvers and coamings.

(E) - AII deck plating imide lille of hatLh openings between cargo hold halrllt:'~.

Reso/ution 1\.744(18): Arrnex A - 93

r

Table 3 - Close-up survey and thickness meat.uremenL areas

(Typical areas for thickncss measurement of cargo hold frames, structural mcmbers and transverse bulkheads in association

with close-up survey rcquircments)

Typical Iram;v",r~fl saelion Arens 0, ® and@

A cargo hold lransverso bulkh"ad

Area@

1--------0X-------i 1 I I I I .... -=t-----------I= ~--------I

i ~ i " ®",'>-J I

"" B I " I

"-v~ I I I ID I 1"" I I I I I r-_ I

/ I r------------~ I I ® / /l I I U I I I I I L ___________________ ~

Tlll~k"ess lo be rorMed on TM3-BG, TM4-BC, TM6-BC und I M7-BC a,~ Ilrpmpriate

r I:!D~~~~'?!. Topside tank

i " ............ " .... I -1 I I I I I I I I I I

I Ll~~~~~~~W~·:111 1+ Lower ~tu(J1 --7

, ______ ,fo( Hopppp"er l' slde Double,lxlttom tan" nk

Thickness lo b", repoltod on TM!i_BC

Typicul areas 01 dock plating inside line 01

hatch openlngs belwüün cargo hola hatches

Area@

Hatch openlny

: I I I

94 - Resolution A.744(1B): Arnwx 11

® r: I I I

HalGl, opening

® I I I Hatch I opening I

ThickneS5 lo b", r"purtcd en TMfl-BC

Annex B

GUIDHINES ON THE ENHANCED PROGRAMME OF INSPECTIONS DURING SURVEYS OF OIL TANKERS

1 GENERAL

1 1 Application

1.2 Uefinitions

1.3 Scope of surveys

Contents

2 ENHANCED SURVEY CARRIED OUT OURING PERIODlCAL SURVEY

2. ¡ C;¡.>n¡.>r..¡1

2.2 Dry-dock ~lJrvf'y

2.) T ..¡nk corro~ion-¡m'vpntion ~y<;tem

2.4 Exl~nl of oVl-'r..¡1I imd do~e-up ~lIrvey~

2. 'i Ext~nt of thicknp<;~ mf'il<;urement~

2.6 Exl~fll of lilflk prf'~~lIrf' te~ting

3 ENHANCED SURVEY CARRIEO OUT DURING ANNUAL SURVEY

3.1 General

3.2 Examination 01 thc hull

3.3 Examination oí weather dccks

3.4 Examinatioll of cargo pUlllp-roOIllS and pipe tUllllels

3.5 Examination 01 ballast tanks

4 INTERMElJIATE ENHANCED SURVEY

4.1 General

4.2 oH tankers over 5 years of age but not more than 10 years of age

4 . .1 Oil tankers over 1 U years of age

4 . .1.1 General

4 . .1.2 Extent of close-up survey

4.4 Extent of thickness measurements

5 PREP'ARATIONS FOR SURVEY

5.1 Planning

5.2 Conditions fOl survey

5.3 Access to struclures

5.4 Equipmenl far survey

5.5 Survey al sea or al allcllOrag~

Resolution A744(18); Anncx /3 - 95

6 DOCUMENTATlON ON BOARD

6.1 Gcncral

6.2 Survey report file

b.J Supporting document~

6.4 RE-'viE-'w oí documentation 011 board

7 PROCEDURES FOR THICKNESS MEASUREMENTS

7.1 General

7.2 Certiticatíon of thickness measuremellt ("ompdny

7.3 Keporting

8 REPORTING AND EVALUATION OF SURVEY

8.'1 FVdludliol1 oí survey repart

8.2 Reparting

Annex 1 Requirements for close-up sllrvey at [lerindi('dl "urveys

Annex 2 Requirements for thickness mea~uremenh di periodícal slIrveys

Annex J Requírements tar tank [lrE-'~~llrP le"lirlg al periodical survcys

Annex 4 Requírements for extE-'nt oi lhickness measUI'cmcnts at arcas oí substantial corrosian. Periodic;.¡1 survey within the cargo area

!\nnex 5 OWllcr's illspectíon report

Allllcx 6 Principies for planning document

Anncx 7 Procedures tar certification of a campany pngilgpd il1 lhickness measuremcnt of hull structures

Anncx 8 Reporting principies

Annex 9 Condítion evaluatlon repnr!

Annex 1 U Recommended procE-'dure" ior lhickness measuremcnts

Appendix'l General particulars

Ap¡lPndix 2 Repor'lS 011 thickncss mcasurement

Appendix 3 Guidancc on thíckness measurement

96 - Rcsolution A.744(W): Annex B

,

Cuideline:; un the enhélnced programrne uf inspection during :;urveys oi oil tankers

1 GENERAL

1.1 Application *

1.1.1 J he Cuidclillf's should dpply to .111 oíl tankcrs of 500 !()r1~ gross tonnage and aboye.

1.1.2 The compUancc with ¡he Guidelines is mandato!)' for crude oil tdnkers of 20,000 tons dcadweigh! and aboYe and product carriers of 30,000 !nn~ d!:'adweight and Jbovc under rf'glJlillion J 3G of Annex I to MAReOL 73/78.

1.1.3 The Guidclincs shouJd dpply tu surveys of hull structurf' and piping systems in way of cargo ¡';lIlb, pump-rnOITl", cofferdams, pipe tunncls, void ~p(lce~ within the cargo arca and all ballast tanks.

1.1.4 The Gui(lelines contain the cxtcnt nf examina lion, thickness measurcmcnts and lank pressure testing. The survey should be extenrj¡-'d when substantial corrosion and/nr ... !ructural defects are found and include additional duse-up survey whcn nccessary.

1.2 Definitions

1.2.1 Balla'il /allk is a tank which is used for wa!f'r ballast and includcs segregated halli-lst tanks, ballast double-bottom spaces and pei-lk tanks.

1.2,2 Overafl survey is a survey intended to repart on the overall rondition of the hull strueture and determine !he extent ni additian<ll clasc-up surVt-'y~.

1.2.3 Closc-up Sllrvl-'y is a survey where the dctails of ~!ructural enmponents are within !Ilt-' duse visual In~pection range of the surveynr, I.e. preterabJy within reaeh of hand.

1.2.4 Transverse section includcs all longitudinal members su eh as plating, IOllgitudinals and girders at the deek, sidc, bottom, irmer bottom and longitudinal hulkheads.

1.2.5 Represcntativp /anb are those which are cxpected lo rl:'nect the condition of othcr tanks of similar type arrd service and with similar rnrrosion-preventian systems. When "electing representative tanks, aceount should bl:' taken oi the service and repair hi..;tory on board and idcntifiable crilical cUld/or suspeet areas.

1.2.6 ~u5pect areas are locations showing substantial cQrrosion and/nr ,:¡re considered by the survcyor- to be prone to r,:¡pid wastage.

1.2.7 Substantial (TJr((J!>;on is an extent of corrosion slJrh lhdt dssessment oi corros ion pattf'rtl inoicates a wd~tage in excess oi 75% of allowable margins, but within acceptablf' Iirnit~.

1.2.8 Corrosion-prevention system is nornldlly cOn5idered eithcr:

.1 a full lurd coaling ~upplemented by anodcs;

.2 a full h,:¡rd coating.

Other codting systems (e.g. soft coating) rnay bl:' considered acceptablc as altern,:¡livl:'s provided that they are applied and maintainf'd in I...ompliance with the manufacturf'r'~ specification .

• The inlf'mion oi the,e Gu,ut:!in{), 1> to ensure that an apprnpri"tp level of ,,-,vi,-,,,, oí plan, and documem, j, rOllrlucted anu t ()1I;I;tency in Jpphcdtiun 1; attained. Such f"Valll.1tioll ni SlIl\''-'Y ,,-,port;, ,urvev programme" pl~llnjng dOCUIIH-'III" elc., ,hould be carrif'o Ollt ~t lhe managNi.,llpvpl ni lhe AUlllln';trcltlon (J( organization (Progll'lTO,rf br lh,-, Adllllfll;tratioo,

Resolution A.744(18): Annex R - 97

1.2.9 Coating condition io;; defincd as follows:

GOOD cunditinn with only minor spot rusting;

!-AIR eondilinn with local breakdown of eUelling at cdgcs of stiffeners dnd wf'ld connections andj or light rusting over 20"/0 or more of areas under ulIlsideration, but less than as dt-'fined tor POOR eondition;

rOOR cnndition with general bredkdmvn nf coating over 20% or rllme nf arcas or hard seale at 10% or nmrp ni arcas under consideratioll.

1.2.10 Critica! ~tructllrrll i¡rpas are locations whieh hélvP hecn identified from Lelkulations to require monitorillg nr from the scrvice history uf Ila" subjcct ship or from similelr or sistcr ships to be sensitive lo cracking, buckling or currusinn which would impair the struclural integrity of the ship.

1.2.11 Cargo area is elrl é1rpa as defined in regulatioll 11-2/3.32 of the 1974 SOlAS Convention, as amended.

1.2.12 IlliPlmediatc cnhanced survey is elrl enhanccd survey carried uul t-'ilher at the second or third ¿rlllual sUlvey or between these survt-'ys.

1.3 Scope of surveys

1.3.1 Prior to inspection, 11lt-' surveyor should examine tire ( nmplctcness of documentelti()1l on board, and its contenh i1S él basis for the SUtvey.

1.3.2 Whf'n él sUlvcy results in the iderltific<ltinn of significant corrmiurl or nf significant structural deíeets which, in the opinion of the ..,lJrveyor, will impair the ~trueluréll inlegrity oi the ship. then rl:'rTlt-'dial action, in consultation wilh Ihe Administration, should bp agreed and implemented llt-'fme the ship continues in ~ervice.

2 ENHANCED SURVEY CARRIED OUT DURING PERIODICAL SURVEY

2.1 Ge-neral

2.1.1 The enhanced survey may be UllTllllellCCd al the fourth annudl ~lJrvey and be progressed during Ihe succceding year with d vit-'w lo completion by the fifth i1nniversary date.

2.1.2 As part of tflt-' preparation for the enh<lfl(!-'d sUlvcy. the thickness measurernent and survey progr<lrTlllle should be dealt with. in <ldvilnce of the enha.nced ~urvey. The thickness measurement ~Ir()uld not be hcld befare the fuurlh é1111lual survey.

2.1.3 1 he survey ~huuld indude, in addition to the rl"quirerncnts of the annual ~Llrvey, examination, tests and cheLks el ~utficient cxtent to en~ure Ihill Ihe hull and related piping is in él satisfactory condition dnd ¡.., fil fm its intcnded purpme fur Ihe new period of validity of tllt-' Certificatc, subject to proper rnainlenance and operation dml lo periodical surveys being uuripd out.

2.1.4 AII Ldrl:\0 lanks, ballast tanks, pump·rlHlIll.\ pipe tunnels. cofferdam~ dml void spaccs bounding cargo Iélnks, dccks and outer hull ~hould be examined. and this eXdlTlirléltion should be supplemented hy Ihickncss measurement dnrllesting as dccrned neces~ary, In pnsure that the structural integrily remains cffective. The eX<llllinalion should be sufficient to discnver substantial corro~iurl, significant deformation, fr("l( tures, damages or other ~trLH tur<ll detcrioration.

2.1.5 AII piping "y~lpms within the aboye tanb rllld spaccs should be examined In ensurc that tightne~s ami ("ondilion remain satisfactory. Special attcntion should be giverr lo ballast piping in cargo tdnk'i and cargo piping in balld~t telnk'i and void spaces.

98 - Rf:'~()lu¡¡nn A.744(J8): Annex B

r

2.1.6 Ihe survey extent of combincd ballast/cargo tanks should 11f' f'valualf'd bilspd Wl Ihe re<-oru~ uf hallo ... l hi~lory anu extent uf the corrosion-prevention system provided.

2.2 Dry-dock sUnley

2.2.1 A survey in dry-dock should be a part of thp. p.nhanced survey dlJring IWril](liCal ~urvey. There shuuld be a minimum of two inspections of the outside of the ship's bottom during the S-year period of the certificate. In all case~, Ihp. milximlJrTl irllprval b!:'lween buttum inspectiuns should not exceed lb months.

2.2.2 Altern<lte inspections oi the ship's bottom not conducted in conjunclion wilh Ihf' pnham pd ... urvey dlJrillg [leriodicdl survey may be carried out with the ship afloat. Special consideration should be given to ships oi 15 years of age o)" over· oefarf' lwing pp.rmitlf'd In ha VI"' ~LJ(h in"pedion~. Inspe<-tium uf the ship afloat shouJd only be carried out when the conditions "re s"tisi"ctory and the proper· cquiprnp.nt and suitably qualiíipd slaff ilrl"' dv,.¡il.:1bll:'.

2.2.3 If a survey in dry-dock is not complctcd in conjunction with tllP p.nhancp.d SIHwy dlJrirlg pl:'riodilal ~urvl:'y or if the 36 month rnaximum interval reterred to in 2.2.1 is not complied with, the Cargo Ship Safcty Construction Certiticatp. issup.d to oil lankel~ rl"'íprrpd lo in paragrdph ·1.·1.·1 and/m the International Oil Pollution Prevention Certifica te, iJS iJppropriate, issued to oil tiJnkers refened to in par·agr·aph 1.1.2 should cp.asf' lo bf' valid lmlil el "urvey in dry-dolk i~ completed.

2.2.4 Ilowevcr, in order to allow time for transition to the p.nhancp.d inspeclion sy~lpnl, lmlil fi luly 1997, the Administration with a survey cyele oí 4 years or less may carTy out dry·dock surveys separatcly from the enhanced inspections during pp.riodical ~urVf'y. For ~hip ... lo whilh this dpplil:'s, the enhanced inspections during periodical survey should be conducted at facilities which posscss tllP. capabilities np.cp.ssary lo prnpprly IOfldul."t thl:' eXdrnimltions and testing required, and all other requirements of the enhanced inspection guidclines should be met.

2.3 Tank corrosion-prevention system

2.3.1 Where provided, the condition of the corrosion-prevention system of cargo tiJnks should be exam¡ned. A ballast tank wher·e a proteclivp. coalillg is rnund irl POOR l.ofldiliofl dS dl:'fined in ·1.2.9 and it is not renewed, or where a protective coating has not been applied, the tank in question should be examined at annual inlprvals. Thi< krlP ...... fll!:'d~urerTlent shuuld be cdrried out a~ deemed necessary by the surveyor.

2.4 Extcnt of ovcrall and dose-up surveys

2.4.1 An overall survey of all integral tanks and spaces should be carried out at the cnhanccd slJlvey carrif'd out during pprindi< ell "urvl:'y.

2.4.2 lhe requirements for elosc-up surveys at the cnhanced survp.y carlÍed oul during Iwr·indi< al ~llrvey are given in annex 1.

2.4.3 The survp.yor may pxtp.nd 111f' ~copp nr Ihp rlmt-'-lljl ~urV!:'y dS deerned nece~sdry, taking rnto account the maintenailce of the tanks under survey and the condition of the corrosion-prcvcntion systp.rn, and also in 1111:' following ldse~:

.1 in particular, tanks having slruclllral arr,1rlgerrlf:'rlls or detclils which have suffered defects in simrlar tanks or on similar ships according to available information;

_2 in l;:mb which have structures with reduced scantlin[js in association with a corrosion-preventron systcm iJpprovcd by the Administration.

2.4.4 Fur areas in tanks where coatings are found to be in GOOO condition as defined in 1.2.9, the extent of elose-up survcys according to arlllp.x 1 may bp spp.rially rnn~idf'r·t,d by lh!:' Adrninistratiufl.

N.csolutlon A.744(lB): A,lne>; B - 99

r

2 .. 5 Exlenl of thickness measurements

2.5.1 The requirernenb for Lhilkrl!:'''''' rrlt-',:l<;lJrPIllPllls al lhe. pcriodical survcy are given in annex 2.

2.5.2 Where substantial corros ion as defined in ¡ .2.7 i" founrl, Ihp pxte.nt of thickncss measuremcnts "hnllld f)f' inrTPdSed in dccordance with the requiremcnts oi annex 4 or as specified in planning doclIment as dcscribcd in annex ú.

2.5.3 The surveyor may extcnd the thickness measurements as deemed neces~ary.

2.5.4 Fnr ,HI-'¡¡S in I¡¡nks whe.re coalings are found to be in COOO condition as defined in 1.2.9, the extent oi thickness measurements according to annex 2 may be specially lomidl:'rl:'d hy Ihp Adlllinistration.

2.5.S Transverse sections should be chosen whel'e the largest reductions are su~pected tu {)lUIr or cm-o

revealed from deck plating measurements.

2.5.6 In cases where two or three sections afe to be measLlred, at lea"t urre ",hnuld include il billlilst tank within O.5L amithhip",

2.6 Extcnt of tank pressure testing

2.6.1 The requirements fm tank pressure testing at the periodical survey afe given in annex 3.

2.6.2 Thl:' ",urveyur rrlily pxlpnd Ihe tilnk pre.ssure tcsting as deemed necessary.

2.6.3 Generally, the pre~sure should corre"polld lo d walpr Ipvpl lo lhe. lop of access hatches for Célrgo lilnks, nr lop of air pipe.s for ballast tanks.

3 ENHANCED SURVEY CARRIED OUT I1URING ANNUAL SURVEY

3.1 General

3.1.1 lhe survey should consist of an examinatíon for the purpose of ensuring, as far a" prdcLicabll:', 111<1.1

the hull and piping are maintained ín a ~ati"fat.tory lUIllJi[inrr ilIld ~hoLJld tilke. inlo account the servlce hi~l()fy, (onrlilinn ilnrl e.xlpnl of the corrosion-prevcntion system of ballast tanks and areas identifíed in the survcy report file.

3.2 Examinafion of fhe hull

3.2.1 Examination of the hull pl<-lli¡r:s dIlrl il~ closing appliances should be carricd out uS far as cun be seen.

3.2.2 [xaminatian of watertíght penetration", ",hulIld be (drrit-'rI oul ilS fill" ilS practicable.

3.3 Examination of weather dccks

3.3.1 ExarnilldLiorl of Lilrgo tank openings including gaskets, covers, coamings and flame screens_

3.3.2 Examination of cargo tdf1k pre~",url:'/vanHJln vi1lvp~ ilnd flilme screens.

3.3.3 l::xamination of flame screens on vents to all bunker, uily bdllil~l ilnd oily ~Iop lanks.

3.3.4 Examination oi cargo, crude oíl washing, bunker and vent piping sy",tem"" indudirrg venl milsl~ ilnd headers.

100 - Re50lution A.744(18): Anncx B

3.4 Examination of cargo pump-rooms and pipe tunnels

3.4.1 Examination of all bulkheads for signs of oil leakage or rrél(lure~ dnd, in particular, the scaling arrangements of all penetrations nf hulkheads.

3.4,2 Examination of thc conditinn oí all piping systems and pipe tunnels.

3.5 Examination of hallast tanks

3.5.1 Exalllinaliun uf ballast tanks should be carried out whf'n required as a consequence of thc resulls nf the periodical survey and intprnll:,diate enhanced survey. When cxtensive cnrrmion is found, thickness llleasurerTH:'nts should be carricd out.

3.5.2 Where substantial cOI"rosion as ddined in 1.2.7 is found, the extent of thk.knp~s llled"Url:'ments should be incrE'cN:,d in accordance with the requirclllents in arHlI-'X 4.

4 INTERMEDIATE ENHANCED SURVEY

4.1 General

4,1,1 Those items which are addilinnal to the requirements of the annual sUlvPY m<ly be "urveyed either at lhe selOfld Of third dnnual survey or between thp~1-' ~urveys.

4,1.2 The survey extent of cargo and balla~l 1<ll1k" dependent on the age of the ship is specifipd irl 4.2 and 4.3.

4.1..1 Fnr weather decks, an examination as taro as appli( <lhle of cargo, crude oil washing, bunker, balla~l, steam and vent piping sy~lelll~ a~ well as vent masts and headcrs. If upnn PX<llllilldtiun there is any doubt as lo lhe condition of the piping, the piping may bl-' required to be pressure tested, thickness lllea"lJred or both.

4.2 Oil tankers over 5 years of agc but not more Ihan 10 years of age

4.2.1 In the case of oil tankers over .s years nf age but not more than 10 years of age, the follnwirlg ~huuld apply in addilinn lu 4.·1.3.

4.2.2 Fnr halla"t tanks, an overall survcy oí representativp t,mks ~!:'Iect!:'d by the surveyor should be carried out. If such inspections revp<ll rm vi"ible ~trLlctural defects, thc exarnination Illay bt-' lirnited to él verification thal lhe corrusion-prevention systern rernains eifpcliVl:'.

4.2.3 Where POOl-{ coating condition a~ dl"'fim:,d in ·1.2.9, corrosion or other dcfects are fOlJnd in baIla~t tanks or whpre a u.ldting has not been applied, the examination ~hnuld be extended to other ballast tanks of the sarne type.

4.2.4 A ballast tank wfWrt, a coating is found in POOl-{ condition as defillpd irl 1.2.9 and it is not renewed, or where a coating has not bccll applipd, Ihe Lank in question should be examincd at annlJal intervals. Thickness Illt'<l~url:'ments should be carried out as deemed neressary by the surveyor.

4.3 Oil tankers over 1 U years of agc

4.3.1 Ceneral

4.3.1.1 In the case of nil tankers over lU years of age thc following ~hnljld <lpply in addition to 4.1.

4.3.1.2 i\n oVPrall "urvey of at least two reprcsentative cargo lanks "huuld be carried out.

Rcsolutioll /\.744(18): Annex B - 101

r

4.3.1.3 An overall survey of all balla~l I.·Hlks and cOlllbined cargo/b;:¡lIast tanks should be cdrried OlJl. If such survey rl:'VPélls no visible structural dcfccts, the survey may be lifllilt-'d lo a verification that the corrosion-prcvcntion system remains effective.

4.3.2 Extent oi c!ose-up survey

4.3.2.1

.1

Close-up survey should be carried out to lhe fnllnwing extent:

for \).111<1,,1 Iélnks:

- In lile sallle extent as previous periodical survey, after ~",cond periodical survcy;

.2 for cargo tdllb:

4.3.2.2

- at led~t twn (olllbined cargo/ballast t¿¡nks ¿¡ftel' second periudical ~urvey. Thf' pxtent nf survcy should be based on the record of Iht-' previous per¡udical survcy, Llnd repair history of the tdrlb;

(lddilinnally, at least one Glrgo tank Llfter third periudical ~urV!:'y. Tlu-' pxlf'nt ot survey should be bLlsed on the record of tlle prpvious per-indical survey and repail' histo!y uf the tanb_

The extent (Jf clo"e-up ~urVf'ys Illay be extended as stated in 2.4_J.

4.3.2.3 For drl:'d" in lanks wherc coatings arc found to be in GODD londiliofl a" defined in 1.2.9, the pxtent nf close-up survcy may be specially con~idered by Ihf' /\nlllinistr-ation.

4.4 Extcnt of thickness measurements

4.4.1 Thickness measurements at the interrTlt-'dialp pnhanced survey should be carried out for area" foulU! to be su"pect a~ definpd in 1.2.6 at the previous periodical survey.

4.4.2 Whprf' substantial corrosion as defined in '_2.7 is fuund, lhe t-'xlpnl ot thickness measurements should be increased in accordance with the requirf'lllf'nts of annex 4.

5 PREPi\RATIONS FOR SURVEY

5.1 Planning

5.1.1 A "pelifi( ~lJ['Vf'y programme should be worked out in advance uf lhe IlI:'rindical survey by the owncr in m-operation with the Administration.

5.1.2 I he survey programme ~huuld ill( IIJ(Jt-' cnnditions for surve}', élccess to structures and equiprrll:'lll ínr 5urveys, taking illlo arcnunt the requirements of annexes 1, 2 and 3 ínr cln"p-up survcy, thickncss measurcments and tank pressure testing as describ",rJ in 2.6.

5.1.3 Alternatively, the clo~e-up ~urvey ill Ihi" "urvey programme may be based on a planning duculrwnl, appruved by lhe Adminiqration, as dcscribcd in onnex 6. The planning duculTlt-'nl "hould comply with a procedurc for the applicéltion of risk assessment develo]1t-'d by Ihe Organization.

5.1.4 The survey programme should take inlo ,¡uounl Ihe infonnation included in the documenlatioll (lIl board, a" de~uibl:'d in 6.2 and 63.

5.2 Condition¡;¡ for survey

5.2.1 TllP ownpr- should provide the necessary facilitie" for a ",¡fe pxpcutioll nf the survcy* .

• Reter 10 chapter 10 01 the Illterndllu",,1 Sdfrcly Cuide lo, Oil T.,"kPI' .'mrl Tl'rminal,,- (ISGOTIl - Enlrv Inlo dnu wurk",); '" ~'''CIÚ>l'(l 51_"'0"',.

102 - Re~ulutiol1 A744(l8j: i\n/lCX B

r

S.2.2 Tanks and sraces should be sate: for access, i.e. gas freed, ventílated, etc.

5.2.3 Tanks and spaces should be ~uffícíently cleCln drld frl:'l:' írnm walpr', scalP, dirt, oil residues, etc., to reveClI ~igrliíicdlll tnrrminn, dpínrmalinn, tractures, darnages or other structural deterioratíon. In particular this applles to arcas which arc subject to thickness rneasurement.

5.2.4 Sufficiell! illulllillalion ~hn(Jld bp prnvided to reveal significant corrosion, dcformation, fractures, damages 01' other structural detcrioration.

5.3 Access to structures

.5.3.1 Fot nVf'rall survey, means should be provided to enable the surveyor to examine the structure in a safc and practical way.

5.3.2 For clu~f::'-up ~urvey, orle nr mote nI the tnllowing rneans for access, acccptablc to thc surveyor, shnuld be prnvided:

11!-'rrnimpnl ~Iaging ami passagcs through structures

- telllpor,Hy ~tdging dml pcl ... ~ages Ihrough structur-es

- lifts and Illovable plCltform~

boats or rafts

other equivalent means.

5.4 Equipment for survey

5.4.1 Tlli(kllt--'~s mf'a~urement shnuld nonnally be carried out by means of ultrasonic test equipment. The accurilCy of the equiprnent should be proven to the surveyor as requirl:'d.

5.4.2 Onl:' or more ()f Iht-' fnllnwing f¡-acture-detection procedul"es mily be required íf deerned necessary by the sUlvcyor:

- radingr-aphic equiprnent

ultrd"unic pr¡lJiplJH--'nl

Illagnetíc pClrticle equipnrenL

dye penetrant

other equiv;:¡lenl means.

5.5 Survey at sea or at anchoragt'

S.S.l Survey al sea or at ilnchorage may be accepted provided the surveyor is given the nece"sClry assistance from the personnel on board. Nece~sClry preCCllltiorl~ Clnrl prnrt-'duIPs fnr canying out the survey should be in dlcorddlln-' wilh S.l, S.2, .í3 ami SA.

5.5.2 A communication system should be arranged between the ~urvey pdrly in Ihp lank and lhe respon~ible uffiler on d!:'(k Thi~ sy~IPm should al so include the personncl in ch;:¡rge of bullast pump handling if boats 01" rafts are used.

5.5.3 Explmimeter, uxygen-meter, bredlhing i1ppilralu~, lifeline and whistles should be at hand during the SlJlVey. When boats m rafts are used, appropriatc lifejackets should be available for all participants. Buats or rafts should have satisfactoty residual buoyancy and stClbility even if one t!1i!ml1Pr is ruptLHf'd. 1\ safety checklisL ~hould bt' prnvided.

Resolution A.744( 18): Amlf-'x R - ]01

r

5.5.4 Sutveys of tanb by rrH:'élm nf boa.ts or rafts may only be undertaken with the <lgrpt-'lIlt-'nl of the ~urvpynr, who should take into account the safet)' arrangemenb providpd, including weather forecasting and ship response in reasonable sea cunditiur1~.

6 OOCUMENTATION ON BOARD

6.1 General

6.1.1 The owner should supply and maintain on-baard documentatiun d." ~pt-'rined in 6.2 and 6.3, which should be readily available far the surveyur. Tlle ulrldilion evaluatian repart refened to in 6.2 ~hould indude a translation into Fnglish.

6.1.2 The dmurTlpnl..Jlinn ~hould be kcpt on board for the lifetime of the ~hip,

6.2 Survey report file

6.2.1 A survey report file ~hould bp a part of the documentation on board, consi~ting uf:

.1 reports of structural surveys (annex 8)

.2 condition evaluatiorl rppnrl (i'lnnpx 9)

.3 thickness mcasurcment reports (annex -10)

.4 survey planning ducurTlpnl i'lrcording to principies in annex 6, where pruvided.

6.2.2 The survey repurt (jlp "hOlJld be available al so in the owner's and the Adrnini~trdlinn o((¡ce5.

6.3 Supporting documents

6.3.1 1 he following additiundl donJnlPnlation should be available on board:

.1 111i'lin structural plans of cargo and ballast tanb

.2 previous repair hi."tory

.3 ci'lrgo and ballast history

.4 extent of u~e uf inprl gi'l"; pli'lnt and tank deaning procedures

.S inspections by ship's personnel with reference to:

- structural dctcrioration in general;

- leakagps in bulkheads and piping;

- conditiun uf coaling or corrosion-prevention system, if an)'. A guidance for rppnrling i5 shown in annex 5;

and any uther inforrmlion Ihal would hclp to identify critical structural area~ and/or ~uspecl areas requiring inspection.

6.4 Review of documentation on board

6.4.1 Prior lo inspection, thc survcyor should examine the completef1l:'s~ of Ihe documentation on board, and its contents as a basis for the ~urvey.

104 - Re~oluli()f! A744(18): Anncx B

7 PROCEOURES FOR THICKNESS MEASUREMENTS

7.1 General

7.1.1 lhickness measuremenls ~h{)uld normally be carried out under rhe supt:'rvi~iun of the surveyor. However, the ~urveyor may ilecept thic:kllf'sS mpa"urt'rnents not carried out under his direct sup(-'rvi~iun provided that:

.1 the thickness measurements are earrit'u out by a quaJified company certified by an orgdnizdtion recognizf'd by lhe Administration;

.2 the thickness measurements al'e eanied out within 12 months prior to c:ompJplion uf the periodieaJ survey ~pecified in section 2 or intermediate enhanred .. urvey specified in section 4.

lhe sUlveyor "huuJtl recheek the measurements as deelllNJ nect'~sdry to ensure acceptabJe accuracy.

7.2 Certificalion uf thickness measurement company

7.2.1 lhe thickncss measuremenl" .. huuld be carried out by a quaJified comp':my certified by an organi7.aliun recognized by the Administration according lo principJes stated in annex 7.

7.3 Reporting

7.3.1 A thickness I1H:'d .. urement report shouJd be prepared and subrnilled tu the Administration. lhe report ~houJd give the Joeation of meaSlJremenl~, the thickness measurcd as well as c:orrt"spnnding originaJ thicknpss. Furlhermore, the report shouJd give the datt" whf'n lhe measurements were carried out, typp ni measuring equipment and narne~ of per~onneJ and their qUillifications and be "igr1ed by the operator. I he Ihi! kne~s measurement report shouJd foJJow tl1f' principies as specified in the recommcnded procedure .. for thickness rneasurprnent~ ~et out in annex 1 U.

7.3.2 rhe surveyor shouJd vcrify and c.nunl~r ... ign the thickness measuremcnt rcports.

8 REPORTlNG ANO EVALUATION OF SURVEY

8.1 Evalualion uf survey report

8.1.1 lhe data and infonnalinll on lhe structuraJ condition af the ship coJJeetpd during the survey shouJd be pvaluated for acceptability und cantinued stluclur..J1 integrity of the ship.

8.1.2 rhc anaJysis of dala ~huuJtl be carried out and endorscd by the I\drnini"lrdtiun and the concJusians of Ihe drldlysis shauJd farm a part of the condition eVdJudtion report.

8.2 Repurting

8.2.1 PrincipJps for "mvey reporting are shawn in annex 8.

8.2.2 A condition evaJuation repolt nf the survey dnd resuJts should be issued to the owner a .. ~huwn in annex 9 and pldced on board the ship far rcfcrcnce at fulure ~urveys. The condition evaJuatian repor! shouJd be endarscd by tile I\dmini~lrnliun.

Resolution A.744(J8): Anncx B - /OS

Annex -1

Requirements for close-up survey al periodical surveys

AGF ~ s---j ;-; < AGE ';10--1

2

(A) ;NE WlG FRAME r; ALL WEB FRA~ RING - in a hallast wing I ~~GS - in a fJ<-\lId"'! tank, if any, or a cargu wing tank, if any, or a wirlg !ank used cargo wing tarrk lI<;f'd primurily for water primarily for water bdlla<;l balla~t

(R) ONE DECK -1 KANSVERSE - in d cargo tank

(D) ONE TRANSV[RSE 13ULKHEAD - in il ballast tank

(D) ONE IKANSVERSE BULKHFAD - in a cargo wing tank

(O) ON[ TRANSVERSF BUI KHE¡\D - in a cargo centre tdnk

----

I

(B) ONF rlFCK TRANSVEK~I:. - in each

I of the rernilining ballast tanks, if any

(B) ON[ DECK TRANSVERSE - in a cargo wing tank

(B) ONE DECK TR¡\NSVERSE - in two cargo centre tdrlk<;

(C) 80TH TRANS­VERSE BULKIICAO$ in a wing bdlla<;l lank, if any, or a cargo wing tank lI<;pd prilllarily fOI"

water ballast

(O) ONE TRANSVFRSE RLJLKHEAD - in each remaining bdlld<;l lilnk

(D) ONE TRANSVERSE BULKHEALJ - in a cargo willg lCJnk

(O) ONF TRANSVERSE BULKlllAO - in twu cargu (I"nlre tanks

10 < AGE ~ 15

3

(A) ALL wm FRAME RINGS - in all ballast tanks

(A) AII WEB FRAME RINC~ - in a cargo willg l¡¡nk

(A) ONE WEB FRAME KING - in each rpllMining cargo wing tank

(C) ALL TRANSVERSE BULKHEALJS - in all cargo and bdllCJsl tanks

(E) ONF ClECK AND BOnOM rRANS­VERSF - in pach cargo centre tank

(!-) As considered IW(f'ssary by the Administratiun

AGF> 15

4

As for ships referred lo in cnlumn .)

Additional transverses included as deerTlt--'d nf'cessary by the Admini~tratiorl

---, --- -----

(Al Complete trdllsvelse web frame ring including ddjdrf'nt str-uctural members

(8) Deck transverse including adjd(l:'T11 deck structural members

(e) Tranwer ... p bulkhead complete - including girde-r <;ystem and adjacent member~

(D) Transverse bulkhead lowl:'r part - including girder system and ¡¡djilcent structural member~

(E) Ol:'ck dnd hottorn transverse including ddj¡¡cf'nt structural members

(F) Additional compll:'lt-' 11 ilnsverse web ring

106 - Rf'_mlutioll A.744(IH): Annex B

r

i\nnex 2

Requirements fur thickness measurements at per¡odical surveys

AGE ~ I

Onl:' ~I:'ction of deck plating for the full beam of Ihe ship within the cargo area (in way of a balla~1 liHlk, if dny, or a (argo tank used primarily fm w¡¡ll:'r ballast)

2 Measurements of structural membt"rs ~ubject to close-up survcy according to <l rlflex -1, for general assessment and rPcnrding of corrosion pattern

3 Suspect arcas

L

:; < AGE ~ lU

I 1 Within the cargo areil:

.1 ~ach deck plate

.2 One transverse section

2 Measurements of structural Illember~ subject to close-up survcy accmding lo <lnnex -1, for general assessrncnt and reLOrding of corrosion pattcrn

J Suspect arcas

4 Selected wind and water slrakt:'~ uut~ide

the cargo area

10 < AGE '--:::. 1 S

Within the cargo area:

.1 FdCh deck plate

.2 Two transversf' ~ections

) Medsurements of structural mernbers slJhjec! to clme-up survey according to anrlf'X 1, for general assessment and rerording nf lorrosion pattern

3 Suspect Meas

4 Selected wind and water strakes out~idf' Ihe cdrgo area

'i AII wimi dnd water strakes within the cargo area

AGE > , 5

Within the cargo area:

.1 ~ach deck plate

_2 Three transverse scctions

.3 Each bottorn platc

2 Measurernents of structural melllbt"rs ~ubject to dose-up survey according to éHlnex 1, for general assessmcnt and recnrdirlg of corrosion pattern

J Suspect are0S

4 Selected wind and watcr str-akes oulsidp the cargo area

'i AII wind and wat:Jr . strakcs within the cargo afPiI

--'---

I\.csofution A.744(1Rj: Annex B - 107

r

Annex 3

Requirements for tank pressure testing at periodical surveys

AGf :s; 5

Cargo tank noundaries facing bailast tanks¡ void spaces, pipe tunnels, fuel oil tanks, pump­rooms or cofferdams.

2 Rcprcscntativc tanks for fresh water, fuel oíl and lubrication oi!.

5 < AGF :s; 10

1 Cargo tank bounoaries facing ballast tanks¡ void spaces, pipe tunnels, fuel oil tanks¡ pump­rooms or cofferdams.

2 AII cargo tank bulkhead~ which form thc boundarics oi

10 < AGE :s; 15

Cargo tank boundarie~ facing ballast tanks¡ void spaces, pipe tunnels, fuel oil tanks¡ pump­room s or cofferdams.

2 AII rcmaining cargo tank bulkheads.

~egregateu largoe~. 3 Repre~er1tdtive tdnb tOI' fresh water, fuel oi!

3 Repre~en!dlive Idnh drul lubri<.dlioll oi!. for fresh water, fuel oil imd lubricalion oi!.

AGF > 15

Cargo tank bounoaries facing ballast tanks, void spaces, pipe tunnels, fuel oil tanks, pump­rooms or cofferdams.

2 AII rcmaining cargo tank bulkheaus.

3 AII fre~h w<lter, fue] oil and lubrication oil I,-l!lb.

_____ L _________ _

108 - Rf:'!>olutiun A744( 18): Annf:'x B

Annex 4

Requirements for extent of thickness measurements al areas of substantial corrosion. Periodical survey

within the cargo area

Botlom structure

STRUCTURAL MEMBER

Bottolll plaling

I EXTENT OF

-----i .. MEASUREM[NT

; Mlnlmum ot three bays across tank, including dft bayo Measurements around and undp.r all hell rnouth~.

2 BoUom longitudinal s

1 BnllnrTI girders and brackets

4 BoUom transverse webs

.'} Panf'1 qiffening

Minilllulll 01 Ihwl"' longitudinals in each bay where bottom plating rneasurp.d.

At fore ilnd aft transwrsf' bulkhead brdcket toes and in centre of tanks.

Three wp.bs in bély" where boUom plating measured, with measurenwnts al hnLh end ami middle.

Where fitted.

PAnLR.NOr~ f ___ MEASlJRFMFNT_~

FiVl:'-puint paUern for each panel between longitudinals and wp.b".

Three measurements in line across flangf' and Lhree measurements on vcrticJ.1 weh.

Vertical line of single measurc­mcnts on web plaling with une rneasurement between cach panel stiffcncr, or a minimulII uf [hree mea~urements. Two measurements across faef' flal. Fiw-point pattern on girderj bulkhead brackcts.

five-point pattcrn over 2 squarf' mp.trf' arf'a. Single measure­ments on face flat.

Single measurements . ._J

Rcsolution 1\.744(18): Armex B - 709

r

STRLJCTURAL MEMBER

Dcck plating

2 Deck lungiludinal~

3 Deck girders and brackets

4 [Jeck transverse webs

5 Panel stiffening

Deck slructure

I:XllNfOr ~FASlJREMENT

I Two bands across tdnk. ,

Minimum ot three longitudinals in each uf twu l.h:¡y~.

Al ron-> and alt transversc bulkhead bracket toe~ and in cpnlrp nI tanks.

Minimum uf two wt-'hs with mcasuremcnts at middle and buth end~ uf ~pan.

PATIFRN OF MI::ASUl{lM[NT

Minimum of thrcc mcasurc­ments rer plate per band_

Three measurernenb irl lirw vcrtically on wcbs, Jnd two measurernerlh on flange (if fittcd).

Vertical I¡ne of single measure­nH:'nl<; nn web plating with onc measurement between each p,HH--'1 ~Iifíener, or a minimum ot three measurements. Twu Illf'asurements across facc flat. rive-point pattern un girdl:'rj bulkhead brackcts.

5 point pattcrn over 2 square metre area. Single IIlpa'ilHf'­nlcnts on face flat.

Wherp ;wailahle. ~~ngle measurements .. ~

110 - W.csofution A.711(18r Annex B

STRUCTURAL MEMBER

Deckhead and bottom str-akes, and slrélkt"s in Wdy uf ~tringer platforms.

2 AII other strakes

1 I ungitudinals - deckhead and bottom strakcs

4 Longitudinills - all othcrs

5 Longitudinélls - brdlket

6 Wcb frames and crO'iS !if'~

Shell and longitudinal bulkheads

FXTENT OF MI:.A$UREMENT

Plating between each pair of longitudinal s in a mínimum of thrcc bays

Plating bctwccn cvcry third pair of longillldinal~ in same three bays

Lach longitudinal in samc thrcc bays

Every third longillJdindl in ~arne three bays

Mínimum oi three at top, middle and bottom of tank in salllP thr'PP bays

Thref:' web~ with mínimum of threc locations on cach web, illrllJding in way uf cross tie connections

PArll:.KN 01'" ME!\SlJREMENT

Single measurement

Single rrH-'d"urernent

Thl-ee measlJIp.lllf'nls nUO~~ web and one measurement on tlangc

Three measurements across web and anc measurement on flangf'

rivc-paint pattern aver al-ea of hrnckel

rive-point pattern over about 2 squarf' nlelre ,Hed, pi u,," single measurements on web frame and cross tie fa,e flals

Rf''iofulion A744( /8): Anr)l:'x B - /11

r

Transverse bulkheads and swash bulkheads

STRUCIURAL Mi=M8ER

Deckhead and bottom strakes, and strakcs in way of stringer platforrn"

2 AII other ~trake"

3 Strakes in corrugated bulkhedd."

4 Sliífe.rlf'rs

5 Brdckeb

G LJeep webs and girders

7 Stringel- platforms

EXTFNT OF MI::A$UI<[MENT

Pldling between pair of stiffcners at three locations - approx. l,! and j width of tlllk

Plating bctwccn pair of stiffeners at middle IUCdtiol1

Plating for each Chdrlgl:' nf scantling at centre of panel and at fldnge or ¡dhrir dlf'd conncction

Minimum of three typical ... Iiífpnf'r~

Minimum of three at top, middle ami butturn nf Idnk

Ml:'d ... urf'lllf'nts at toe of brackct and centre of span

AII stringers with measurernenb at both ends and middlc

PArlERN or MFASlJREMENT

Five-points pattern between stiffel1ers ovcr 1 mctrc Icngth

Single mea~uremel1l

Fivc-point pattcrn over about 1 square rnetre of pli'lling

Fur w/:'b, five-point pattern over span between bracket lOnllf'ctiollS (two rneasurcmcnts across web at each brdckl:'l connection, and one at centre of span). For flange, "il1gll-' measurcments at each bracket toe and at centre oí span

Five-puint pallpr!l OVf'r area of brackct

ror web, five-point pattern uver dbnul 1 square metre arca. Three measurements acruss fa<.e fldl

Five.-point pattern over 1 square metre area plus single mea,ucemcnts nc", bcacket toes I and on face flah

__ -"_-

172 - Resolution A744(lfl): i\1l1lf'X B

I

Anncx .s

Owner's inspection report

Structuréll condition

Shi¡h ndme: .

OWN[R'S INSPECTION REPORT - SlruLlural conrlition

Grdue uf ,teel:

Element,

LJpá:

nottom:

Side:

Longiluuirldl bulkheads:

Trdl1Wer,e bulkhedu,:

J)pck: Hottom:

Lrack~

~ppair~ carried out due to:

[3uckles

I-or lilnk No.:

Side ............. . Longitudinal bulkhedu: .

Corrosion CUdlrr1)\ cOlluiliurl

Thickness measuremcnts G!lded out (udle,):

Results in gcneral:

Overduc surveys:

Outstilllding lOIIUitiurl, ui dass:

COlTlnu;~lIl,:

Dale uf irl,pection:

Impected by: .

I'itting Modificatíon! Other rf'pilir

Nesolution A.744(18): !\nnf'x R - //3

r

Annex 6

Principies for planning documenl

1 1\ planning document i~ inlf'nded to identify critical ~trullLlral arcas and to stipulate tht-' minimum extent, locations and means tor close-up ~urvl:'y and thickness measuremenh wilh respect to sections and internal structures a~ well <lS lo nominate suspect areas.

2 The document shauld bl:' worked out by the owner in ul-Opel"3tion with the Adminbtralion wdl in advance af the ~urVf'y.

3 The b"sis for nomination of tanb ami "reas rcferred to in ·1 is a ri"k "sscssment in consideratiun of possible deterioratiun~ where the fallowing elemenh on Ihe particular ship are takl:'rl into account:

.1 dl"'sign teatures such as extent ur high-tensHe steel and local del"ils;

.2 former histOly availablf' at owner's élnd Administr dtiorl of"fkes with respect to corro ... ion, cracking, bUl kling, indcnts and repairs for tflt-' particular ship as well as simil"r ships;

.3 information fram ~drnt-' offices with respect to type or cargo, use of different tanb rOl cargo/ balld'\l, corrosion-preventian sy~terT1 é1nd conditian of caating, if dl1y.

4 The degn:,1:' of criticality should be judged ,md decidcd on the basi~ of rl:'rognizcd principies and practic/:'o

5 Thl:' planning document should cunl,..¡in:

.1 main particulars;

,2 plan of tdl1k'i;

.3 lisl or tanks with informatíon 011 USf', protection and conditioll of coating;

.4 corros ion risk norninalion of tanks;

.5 de~ign ri"k nomination af structure~;

.6 nominatian of tanks and dreas ror dosc-up survey;

.7 nomination of ~ections and structures far thickne ... ~ Illf'asuremcnts; and

.8 Ii~t of (I(ce.ptablc carrosian allowdncf:' or rlittercnt structures.

1 Application

Annex 7

Procedures for certification of a company engagcd In

thickncss measurement of hull structures

Thi!> guidance applies far certificalion ot the company which inlf'llds to cngage in the thicknf:'~~ rneasurc­ment af hull ... lrllcIUl·es of ships.

114 - Resolution A.744(7B): Anrwx B

r

2 Procedurf'S for certification

Submission of documcnts

2.1 lhe follawing documcnts should be slJbllliLted to an organization recognizcd by the i\drnini"tr<ltion for approval:

.1 Outline of the campany, e.g. oq~,Hli~<ltion and management structurc .

. 2 Experierlle uf the campany on thickncss measurelllerll uí hull "tructures af ships .

.J r echnicians' careers, i.e. experience oi techniciélns as thickness llleCl"urement operatars, lerhllicdl knowledge and cxpcricnce ot hull slrlJclure, etc. Operators should be qualitied according to a rccognizt"d indu~tri<ll NDl Standard .

. 4 Fquipment used for thickness mcasuremenl ~uch <1" ultrasonic testing machincs and their· maintenanccjcalibralion pro<..edures .

. 5 A guide for thickness mcasurcment opera 1m" .

. 6 lraining progr,lInrnes for technicians fOI" thickness measurenH·'rll

.7 Measurement record formal in rlClurd<lnce with recommended procedures rm Ihickne"s mcasurenwnls hee <lnnex 10).

!\urliring nf ¡he c.ompany

2.2 Upon reviewing the dOClIrTll"'lll" "ubmitted with satisfactory rcsults, the cOlllpany "hould be audited in or-der lo a<'<..ert<lin that the company is duly OI"ganized and rn<ll1dged in accardance with thc documenls submitted, and eventually is capalrll"' of <..unducting thickness measuremcnt ot the hull "trudure of ships.

2.3 Certification is conditianal upon an OIl-rrUdrd demonstration of thickness llleasurelllPnl d" well as satisfactory reporling.

3 Certification

3.1 Upon satisfactory rf'slJll" of both the audit of the company refen·ed lo in 2.2 and the demonstration tests reíerred tu in 2.3, the Administration or organizalion rl:'cugnized by the Administration should issue .1 Certificate oi Approval as well as a nntice tu the effect that the thickness llleaSUrelllent u[Jeration system oi the COlllpdlly hd~ been certifled.

3.2 Rencwal/elldor~l:'lTlent of the certificate should be Illade .11 illterv<ll" not exceeding 3 yeilrs by verificatian that original canditions are Illainlairlt'd.

4 Report Di any alteration to the certified thickness measurcmcnt operafion system

In any c<l~e where alteration to the certified thicknl"''''' lIled~Urement operation system of tlle company ¡" made, such an alteration shnuld be immediately reported to the organi/aliorl recognized by the i\dlllini<,lr<ltiun. Re-audit should be made wher~ deenlPd nece~"dry by the orga.nization recognized by Ibl"' Administratian.

5 Withdrawal uf the certification

lhe certification may be withdrawn in Ihl"' rolluwing cases:

.1 wherf:' the measurements \-vere improperly carlÍed out ur the results were improperly reported;

.2 where the surveym found <lny deficiencies in the approved thicknes<, lIlf:'a~urement operation ~y~tf:'rn of the company;

.3 whcrc the comparly ¡'diled to repart any alteratian referrcd to in 4 In the organizatian recognized by the Administration as required.

Resolulinn A. 744( /8): AnnE'x f:í - 17,)

r

Annex 8

Reporting principies

Reporting formats should be worked out individual!y by the Administration. As a principie the fol!owing contents of reports tor oi! tanker structures should be included as applicable for the survey.

1 Ty¡1f' of survpy (periodical slJrvpy, inlermedi¡¡lp enh,mrpd ~lJrvpy, almual survey, othel)

1.1 Oate, locdtion, whether ur not the ~urvey Wd~ in dry-dock <lnd whether or IHlt Lh!:' ~urvl-'y wa~

complctcd.

1.2 Date of the previous:

bollolll insper.lion

dry-docking

2 Fxtent of lh!:' ~urvey

2_1 Identification of overal! surveyed tanks.

2.2 Where in each tank close-up survey has been carried out, and means of access.

2.3 Identification of tanks and location of structures to be given with respect to the thickness measure­tnents carrif'd out.

2.4 IdenlifiCdtioll uf pre."~ur!:'-te.,,t!:'d limb.

3 Results of the survey

3.1 Cnalin~ cnndiliwl nf PMh l"nk (if applicalrll""'). Idenlifir,;¡lion of lank~ wilh anoof's.

3.2 Structural conditiun of each tank:

identified tank found in satisfactory condition. Otherwise identifícation of findings which should be cnrrecled nr rernrd!:'d, ~uch a~:

corr05ion: - structure members - type of corrosion (pitting, gem,ral) - extent

cracks (location)

buckling (Iocation)

indents (lociltion)

The narrative report may be supplemented by sketchesjphotos of damagesjrepair5.

33 rhickness measurement repart endorsed by the attending surveyor.

4 Actions to possible findings

4.1 Repair in identified tanks:

structural mcmbcr

repair method

n:'p<lir extent

116 - Rcsolution A.744(18): Anncx B

4.2 Recorded findings considerf'd rlut tu necessitate immcdiatc repairs. Memoranda for futurc inspections and thickness mea~lJrerT1ents shouJd be givcn, c.g. tor arf'a~ fULlnd as suspect with rcspect lo lurrusiun (see 1.2.6 uf the guidelines).

4.3 C:onditiun uf classjflag Statc rcquirell1f'nts.

The structure of thc rcporting ronLents may be diffcrcnt, depending un the report systcm for the Administration.

Annex 9

Condition evaluation report

I~sued upon complction of periodic<ll survey

l,enpra/ partlculars

Ship's llame:

POr! oí Icgislry:

Deadweight (melriL lurmes):

Date of build:

Date of major conversían:

Type of COllveroion:

Clil~~jArJmilli~tr;¡tion identity numbc¡·: Prpvious class/Administration ide¡¡lily numbpr(~): IMO numbcr:

Ndlional flag: Prpviolls nalional tIJg(s):

Gross lormdKe: Ndtionill: tiC (l9Gq):

ClassifiLdlion notation:

Owner: Previous owner(s):

The survcy rcporl~ drlU do("uments IIsted below have bccn reviewed hy lhp undersigned and found to ve satisfactory

2 The periorlical survey has bcell compleled in accorrlance with the prcscllt Guídeline~ un (dil.te)

Cundition evaluatían report campleted by

; Office

I Cooditioo ",Ieotioo cepoc, veritied by

.. .._-

OHice

Attached rcpolts drlll uucument'i: 1) 2) J) 4) 5) 6)

Name Signaturc

Name S·lgnaturc

Dale

Title

Reso/ution A.744(18)." Annex U - 117

r

ConLents of condition f'vilfuation report

Part 1 - Ceneral particulars:

Part '2 Report review:

Pdrt 3 Clme-up survey:

Part 4 - Thickness measurements~

Part 5 - rank corrosion-prevention ~y"lerll:

Part b Kepairs:

Part 7 Cllndiliorl of cla'isjflag Statc rcquircments:

Par! 8 Memoranda:

Part <) - Conclusion:

11/J - Resolution A. 744( J 8): Annex R

Scc front p<1gc

Where ano how ~urvey w.;¡~ donp

Extenl (whirh lanks)

Rcfercncc to thickness measurement reporl

Summary of where mea~ured

Sepdr<lle ínrm indicating thc tanksjarcas with substantial corros ion, and corresponding:

thiekne~~ dirnirlllliOrl

ronosion pattcrn

Scparatc form indicating:

loeation of lO<llingj,lIlodes

condition of coating (if applicable)

Idcntification of tanksjareas

Arceptable defccts

Any points of attention for future survey!->¡ e.g. for ~LI~pell Meas

Extended a.nnualjintermediate enhanced sur­vey due to coating bredkdown

Slalernent on evaluationjvcrification of survey report

r

fxtract of thickness measurem~ne.

f{cfcrcncc is made to the thickllP~s nle<lsurernent report:

Positjon of substantjally rnrroded tanksjareas 1

Notes

Thicknp~~

dimjnutjon ['Y01 Corrosion , pattcrn

Substantial corrosion, Le. 75- 100% of accf'ptilhlf' lTlilrgirl'" w;;r~ted. ,

P = Pitting C = Corros ion in general

f{emarks: C.g. -1 Rpf. illlddled

sketches

Rf:'~ufutiun A744(78): Annex l3 - 719

r

Tank corrosion-prevention system

Notes

T,mk Nos. 1 Tank t (lrro~inn­

prevention ~ystp.m.l.

___ .. 1 __ -

Coat;ng ~ condition ~ I

,

AII segregated ballast tanks and combined cargojballast tanks shuuld bl:' listed.

e = Coating A = Anodes NP = Nu prnleClion

Cuating candilioo acmrding to thc following standard.

GOOD condition with only minar spot rusting.

Remarks

fAIR condition with IU(('II brf'dkdown of coating at edges of stiffeners and weld conneclio[]s and/or light rusting ayer 20% or more uf arPas under considcration, but less than as def'ifled fnr POOR condition.

POOR condition with general breakdown uf coating over 20% m more of arcas or hard scale at -10% ur rnnrf' ni areas undcr considcratioJl.

If coating condition "POOf{" is given, extended annual survt:'ys should he introduccd. This should be noted in part 7 of tht' Contents of condition cvaluation report

120 - Rcso/ution A.744(18): Annex a

Annex 10

Recornrncnded procedures for thickness rneasurerncnts

General

These proecdurcs should 11f' u ... ed fm recording thiekness mcasurcrnents as lf'qlJired by annexes L and 4.

2 Reporting forms -IM1-T, TM2-T, TM~-T, TM4-T, TM5-T and TMG-I, set out in appendix 2, shnuld be uscd fDl" recnrding lhickness measurernents.

~ Ap!wndix 3 contains guidancc diagrams and nnlf'~ rl:'ldting to the reporting forms and the requirf'­ments for thiekness rneaSllreflll:'nt.

4 The repnrling forrm should¡ where appropriatc, be supplell1f'nled by data presented on struetural sketehes.

Appendix 1 Gelleral partkulars

Appendix 2 ¡.{cports on thicknes~ rTled~Urernent

Appemlix 3 Cuidanee on thickncss mcasurelllenl

RI:'~oluti()n AIH(llJ): Anncx B - 121

Appendix 1

GENERAL PARTIOJLARS

Ship's name:

IMO number:

ClassjAdminislri'ltion identity number:

Purl nf registry:

Gross tonna~e:

lJcadweight:

Date of build:

CI(l<,sifici'ltion socicty:

Name uf C(H)lpi'lny pcrformin~ thickness med"urt-'rnent:

Thickness measurcment company cerliíied by:

Certificate number:

Certificate valid frurn: .......... . to .

Place oí measurement:

First date of measurement:

Last date of measurement:

Periodical survey*jinlf'rmediatc cnhanced survey' due:

Detail .. of measurcmcnt equipment:

Qualitk.ation of operator:

RepurL nlJlnber:

Name uf oper.·.¡[nr:

Sigrli'ltlHe nt opcrator:

Company official stamp: .............. .

J 21 - Resolutiun A. 744( I R¡: I\nncx /3

NdflW of surveyor

. Signaturc of surveyor .

Administration: . Orncial stamp:

cnnsisting uf pages

---;

/,

~ o O-3' o » ~

'" !" ,. o o ~ Do I

N ~

Report on thickness measurement of all deck plating, al! bottum ~hell plating or side shell plating (TM 1-T)

Ship', l1am~ IV,O ll'mil,., Ua" ~entlty 1'.8 R~I)()r1 ,'lo.

1 SII<;'.KE

POSITlO'! I

PLATE i'-"

P()~ITION " LE'ttf'r

12th f()"~,,,d

; 11 ~l

______ -"h<>C"w~r<i I'p"r.'''g Al! ~c¿dln!\ MeJIl dil'lhul;:'"

c.li"nil1ution S - - Dlmjn(JI!OI~ P r o"

I (,cld).\"d • IllPll I , ' I [),minuIIOIl S I m'1l "0 Dir',i-,ulo'l I C' P -~S-T--~~'k' I "Td

'"m I % . "'" _'. ,mm r-;,--:--+------c ,

-~ .. e s

-,

10:~

~h e", 7:\"

: sl

i_ I~ .

"h

4lh

'Tri ,

2,..j f---, 1>1

,'\'mi,hl-Ir'

1s1 <1f1

+----+---11 2no -------"Id

-------<--e .• I I 4th

1:::" . -j-'" t p. ..----¡--------c--I !~~ - - ,

'Jth

I:J

: - I 1 2+ ___ -----"-----

--- --t +=d =+ ]--+-1

1 I -----'----

U'Jcrdül" ,igllaturc Sur .. """r< ,ign;,tlJre "'01"" _ ,p.> f()rln'/VI"~ P".~<

'" m

" O

'" '" O z ..., I :> -" "" A ro Z ~

m~ "'N $: m :>-<.r. e '" m $: m

~

r

NOTES

Thi5 repor! should be used for recording the thickne5s measurement of:

.·1 AII ~!reng!h deck plating wilhin lbp cargo alPa .

. 2 AII keel, bottom shell plating and bilge plating within the C(lrgo arpe! .

.. 1 Side shcll plating including sclected wind and water strakes outside the cargo area.

2 The "lrake po<;itinll "hOlllrl hf' clparly indicatf'rl as follows:

.1 For strength deck indicate the number uf the ~tr(lke or pldlirlg inhnald from tllf' stringer plate .

. 2 For bottom plilting indicatc lhe number of the strake of plating outboard from the keel plale .

. 3 For "ide shell plaling givp numbf'r ot the strake of plating bclow shccr strakc and letter as shown on shell expansiono

3 For oil tankers all deck plating strakcs should be recorded, for ore/oil ships only the deck pl,1ting strakes outside Hne of upening~ shuuld be re("Ilrdt-'d.

4 Measurements should be taken at the forward and aft areas uf all plate .. (lm) wJwrt-' pl,)!f':'> eross héllla"l/cargn lallk boundaries sf'pal·clle measurements for the arca oí plating in way of each type of tan k should be recorded.

5 The single measurcments recorded should represent the average of multiple mea~urement-.

11'"1 - Resolution A.744{18j: Annex B

" ]

r ~:

"-;;: " ~ .!"

"­O O

~

" I ,~

v,

Ship's n¿lre

I

,

STRAKE POSITIl)'J

c('nt,,, ,Ir~{e

she~r ,Ira,;"

TOPSIDE TOrAL

Operalar', "i;:",1Iure

Report un thickness mt'a~urement of shell and d(·á plating (one, two or three transverse ser:tinn5~ I:TM2-T(lll

IMO nunbl'r el"" ;(,", "1)' ,'h

FIRSf IRAr-.SVER5F 5ECTION -'..T °RA.\1~ NUMBER. I I

()n~_

Thk. (mm:

Ca.J¡;.,d l)imlllJtior 1>

DimiclUl ,,~ s

~'" j-~"'" I I --11--

1>

------,------tl ' .-----+-- I

Surve-yür', ,ignatu,c.

R~porr N,)_

SHü'JC;TH nFCK ..,r-.D SHFR STRA,<F PI ATING

5ECOND rRANSVFR:'F 5[C~ION Al f-RA\1F 'llJJV,RFR I

THIRD ,~ANSVFRS[ S[C~,ON Al F-RA\1E ,'lu¡o,mE~_

" ,",

-+­I"'~~I

I I " 'I------t ¡

I T---" Cduged Dimhut!Ofl

l' lJlminutlDIl

5

l' S nm I f I %j mm %

- '1

, -,

- l-.. . I _

.. _--.'., .. -+.---¡-

~¡

-~ ,';,,,<>\ - "e~ lullu,vj"g page

-~---- ~----

NOTES

This report should bl:' lJ"pd for recording the thickncss measurement of strength deck plilting <l.nd shccr strakc plating transverse sections:

One, two or three scctions within the cargo area compri~ing th!':' strucllHi'll itellls (1), (2) and (3) as shown on the diagrams uf typicdllrarlsversf' section indicating longitudinal and transverse members in appendix 3.

2 For oil tanker .. all deck plating strakcs should be recorded, for ore/oíl ships unly Iflf' derk plating strakcs outsidc line of openings should be recorded.

3 The lopside area compriscs dcck plating, stringer plate and sheer strakl:' (inclurling rounded gunwalcs).

4 The exact frame staliOlI nf rllf'ilS1Hement should be stated.

5 Thc single measurements recorded "hould rt-'prt-'spnl Ihe average of multiple measurements.

/16 - Resolution A.744(/fll: AIlIlf'X B

~

oc ~ o o­g. o ~

~ 2' ,. § ~ 00

I

" "

Report on thickness measurement of shclJ and deck plating (one, two or three tranwer~e sections) (TM2·T(2))

Sh ~', ~ame . IMe, numh~r el,,,, ioJc~tlty No. Repot1 1'.0

I I I i1R5; TRA."SVER~~ SECIION AT FRAMF 'JUM[)[R I 5ECO~D TRA,'JSV~RSt SEl~I{)'J liT FR!\ME I\.U.\1BER. rHll<LJ TRAN~VERsr SrCTIO'i Al FR;\.ME: N;)M~;;(-----

_ I 'h1 Orig. GJlJ~E'd D mi"Llioll LJiwln,Jtion No. O¡i~, G,'ug€C Ji:nillu-ion I),ml~utlon No. Ong. GJugLd l}illlllhJlion I Dirni'lul U~ ~TRAKFI -h' e' hL P ~ '-.t.k L> S

PO SITIO!'. ,'" , - - or T ~ -- - or i ""', r--________ L_'l_ler ',rmll P S -11'" 'o m"ll % Ll'llcr Imml p S mm ~.; mm % Ldt,,- (mm, p S mm % [HIn %

1,t'w[owshE'er --- i I ---- ,

qdk~' !'

SHEII PI ,\ TI.'-JG

2~ I j----j--+--- L

1rd , ___ _ _ ¡

~ 1, -- --! I 5th ~ i !

tA', -::---- ---' - -, --+-1----,--

71, , I - - --+--+~

~~~~ - ;' I ,,- ---, - - ,-

,------+--¡---- t -- --!-12th ' I i i

- --- --- ----13th

14th I -- 1"- I ---t---+-- ,

; 15th I I i ,1' _

16th I " ---------

1/th '1, '

1Hth ~ n_ ! I I

-- --- ---+--,--+--+---1 ,~,:: ~ --i==' -- ----- I

kee, s:r-ake -- - --- '1 i I ISOTTOMTOTAL I i n___ --- I ' I i I n_ [ UDer¿tor s sign~tur~ Sur,'('\-Dr's Slgllatwp ,\'nlh - w~ F)ii()win~ p.'~l'

r

NOTES

rhis report should be used for recording the thickne~~ rne(l~url:'rTlt-'nls of shell plating at transvcrsc sf'ctions:

One, two ur three ~ectinm wilhin lb!" cargo area, compr-ising the structural itcms (4), (5), ((¡), and (7) as shown on the diagrams oi typical transverse section indicating longitudinal and traf1werse rTH:>rnbl"rs, in dPf . .H:>lldix 1.

:2 The bottom area comprises keel, bottom and bilge plating.

3 The cxact frame sta tia n of measurement should be stated.

4 The ~ingle nH:,asurl:'1Tlenl~ rf'cnrdf'n should represent the average oi multiplc mcasurements.

128 - Resofution AI'I1(18j: Annex B

;o O ~

O

" §" :>

t ~

" ~ ,. ;: ~

'" I

" ~

Reporl on thickness measuremen! of longitudinal members (o ne. lINO or three transverse sections) (TM1-T)

Shlp'., n"m~ IMO rJmbcr CI~;, i<i~nlÍly 'Ju. :;:.,.por! 1'<0.

~_ .. SECO'J~ rKAN~\/ER5F S[CTIO'J AT FRA.Mf: NLJ.\1IlU( '-'T

Of!g Caug"d n"YlI1Jtion DimirlulOrl Il€m

Thk. l' S No

Imro,' ,- S m'l1 "'" ""11 % No,

{11m:

flRST TRA.N5VERSE SECl'ION AT FRAMF '4UMBER

1-Orig G~lJgE'd DIfT,inution ¡--rJim'nUtlOn

SII-U-!CTURA.L Item Thk. P S M~MBER ,'lo., I

! ',mml p % mty ~', I----+-...L-

THIRrJ TRA.NSVERSE SEC1ION A T

I

I FKAME NJMRER

1

I

_;"" 'C __ ,

~l-I-I 1:

1a"11 Orig. Th.

CaugE'd

I ~ . .

---+--,

i

.. _---

1--

i-+-----+ 01''''3"0-'' ,ignJ\Jr~ S,m.f>yO's ,igndl,re NO"'5 - ,eE ¡;-,}}owi"g I"'f''>

NOTES

Thi~ repnrl should be uscd for recording the thilkf1l:'s". llleasurCnlcnt of longitudinal member." al transvcrse sections:

One, two or thrce sections within the cdrgo ;:HPa comprising the structural ítems (8) Lo (20) as shown on the diagr<lflls of typical transvcrsc section indicating lorlgilurJjnal and transverse members, in appcndix 3.

2 Tht' t-'xact frame station of measurement shuuld be slated.

3 The single mea"urt'lllpnls r-ecordcd should represent the aver d¡';t' of Illultiple mcasurcments.

130 - Rf"inlution A744(18): Annex B

---,

" " ~ §'

" ~ ~ ~

~.

" '5 ~

'" w

Report on thicknpss mcasurement of transverse structural members in ¡he cargo and ballast tanks within the cargo area {TM4-T)

~'1ip', ~,;n~ 1~10 nllmbc'f. n.", irlell!it'r No

TANK D!:SC~IJ'--ION:

I OC. ... TION OF STRUCTURE::

S-,~JCTURAL ME¡,,',BER

~r I ,-;-éM

,

F __ - =t-=~

OpPrllm', ,igr",lure ~urv~'\,()", "gnatJre

Repor' '-Jo.

Origina Thi("~ne,'

Inull:'

1 l)im,nU~'OIl S --- ..

"~

DiminLJtion

p----+-Por! ':'t",board '11m _+1 __ _

Gdu~~d

1 % mm

. 1 --1 .. 1I 1_-,

------+-1 - -¡- 1 - I_~ - 1 __ ' I '--1] ... ,

",,01~\ - .<ei" f~,'.'()wi~i! ;lajW

NOTES

This report should be used for recording the thickness measurement of transverse structural members¡ comprising the appropriate structural items (25) to (32) as shown on the diagrams of typical transversc section indicating longitudinal and transver~e members, in appendix 3.

2 (iuidance far areas of measurement is indicated in tables 1 to 3 of appendix 3 .

. 1 The single measurements re.arded 'ihould represent the aver·age of multiple measurements.

1J;¿ - Resofution AI"/1(J 8): Annex a

'" ~

~ §" :> ~ '" .~

~ ?; ~ '" I ,~

w

Report on thickness measurement oi \-V,T./O.1. transverse bulkheads within the cargo tan k or cargo hold spaces (TI\15-T)

Ship', tW1]~ I.\I'() '" mbcr . Ci"" ,dFnllly 1'-0. Rcpm¡ No

fTANK/HOu) 1}[5CRIf'TIO,\J:

I aCAllO/'. Of STRUCTURE: ,-- -----

l 1=-

STRIJCTURAL CO\1PO'l[r-., T IPLAnN(;/5TIr-rENER¡ ~..-----j

- ff:,A,M~_

l' - e'm',,""", Djr'linul,{]~ ~

1=·"7'", "1 T"e 1

-.~ "C"i=-_.· ±' '~_., .. ~ --- l -. "1--1

. - _._~t= L_L 1_ -= c= - - _. ." --. -=- L l----+-. -+ 1 '. _

t=. . .. -'-. .._.-__ _~+- . =L=-+ +--1 t=..= ._. ..-' ...... . _. -1_ J--

1

--' __ 1 - -. _. I==J=--r=t--=¡ - . --=- '. I 'll=t-~- .

(}~~r.llm'i si~ndturc Sur"""or; "snature I\f"~S - ,,'C follmh'lg p .• ge

r

NOTFS

This report should be uspd for recording the thickness measurernenl nf W.T.jO.T. transvcrsc bulkhp.ads.

2 Guidance fur arp.as of measurcmcnt is indicated in tdble~ 1 In ~ of appendix 3.

3 lhe single measurernenls wrorded should rcpresent the average uf multiple mPilsurements.

134 - Re~olution A744(8): i\nncx B

Slip', n"mc . IMO nU11l>e

STRlJCTlJR,\! Mi'MBi'R:

LOCA flOr-. O~ ~ 1 "'U~ I UKt,

" ~ C g. O

~

t '" :> 'L " ~ ----x

" I

~

'~

(her;1l0r', ,j~n<ltllrc

rJe,cñpt on

Report on thickness mea~urement of misccllaneous structural memhers (TM6-T)

Cid" Idcntlty N,,_

Sur,'",""rs SlgnalUrf'

RE'Pnrl Nu.

Orig Thk. Imml

Gaugcd

p s

LJjmjnutlnn p

"m %

DimirLl~on , mm %

----

SKETCH

Notf's - '''<' inll<>\,,';'lf f'<'f~

r

NOTES

This rcport should be used for recording tfw lhicknp.ss mcasurcmcnt of miscenaneous structur di members including lhp. strucíural itcms (36), (37) and (J<$) shown in appendix _~.

2 The single meaSllremef1t~ retnrr!pr! should rcprcscnt the ¡lVerage of multiple measurempnls.

136 - Rcsolution A.744(J8): Annex B

\.

AppcnrJix )

CUIDANCE ON THICI<NESS MEASLIRFMFN I

rypical transver~e ~ection of oil tankN, inrlicating longitudinal and lranwerse members

KH'ORTOi'.' TM2-f "li & ¡li

0) ~I,,·,,~I¡' d,'ü pldl"'I'.

o Stringer plate

o Shper ,rrake

(2) ~"J,. ,1",11 [11,'IH!)\

O Elilg~ pl,lting

o B01l0m ,Mell platlllg

0 K" •• II'I,'I •.

REPORT ON T,\¡j('-T f=--@ H"loh '<l,"'"1lg'

® De,k pla\illR betwepn h,ll,h~·,

® Hatch eovero

El @

--t---

@- -­~-

T

REI"CJKI ()'J 1,'.-11 I

o D~-,k longitudinal,

00 I kü "jrders

@ Slw~t ,hdk,· 1<l"gIILHI"",I,

@ Longitudin,,1 bulkhead top ,toake

@ 1\01l0m 10ngitudinJI, e Boll"," ~",h',·,

® Oilge longitud",als

@ Lonr,iturlinal bulkhead k",cr strak~ e SILI~ ,1"·III,,"~,llId,,,.,I,

@ Longitudinal bulkhead platlng ¡,en",,,,,I .. ,1

@ Longhudinal bulkheJd longitudinals

® IIlIWliJ"II[J[Ilpl.,lillg

@ Inn~r bonom 1ü1l~ltudinal,

@ @ @ @

RcrORT ON TM4-T

@ De<k tranwerse centre tank

@ BollolI' 1',I"',v"",' «'IIIr<' ¡dnk

® Deck tran,v"rs" wlng t,,"~ ® Sidc ,hell v~rticJI web

@ I ""glhHhll,,1 iJ"lkllI",,1 v'-'rli~al ",eh

® ~o!torn t'-"Ilwet>e wJIlg I"nk

@Strur,

@ 1""",\"""" \wh I"cc pl"t"

@ [)_~, fioor>

@ e

r>t.esolution A.744(18): II/lnf'x R - J 37

r

@ /

REPORT O~ TM21 11) 11.1:'1

o ""'''~,¡, ¡J,., k phllng o Slringer piare

o Shf'~r 'troke o ,,,1<, ,¡'~III,I.lhng o (jjl~e pl.,l;ng

G) BOl\Om ,hf'1I pl~tlng

o K",'lpl.l'"

Typical transverse section of ore/oi! ship, inclicélting longitudinal and tréll1SVCrSC members

l\lYORT o," TM,-T

o Df.ck Ion~j1Udi'\ilI\ ® [le' k gml",.,

@l Shp~1 ,trake 10ngltudi""I,

@ Longitud;n,,1 b"llhead top >trakc

@ Bottorn I'''')<IILJ<I,,,,';·,

@ Holtom Blrd"r<

@ Oilgf' 10llgitudlnols

@ Lont',ltud"'dl hLJlkl"·,,,II"''''1 ,t",k"

@ 'ild~ ,hplllol1gltud;nals

@ Longitud;n,,1 b\llkh~ad plating 1'l'm,,;~dl":1

@ Long;tudl~"IIJ1,lkl", ... II[J[,~¡j"d,n .. l,

@ 111'1(->' hollol11 pbtllw

® Innpr hut!orn lo,,~iltJrlin,l,

@ @ @ @

~fl'()~t (),'J IM~-T

® D~á t,a,bver;" centre tank

@ Dot!om trJ""'pe,p centre tank

© Delk ('d'1',""',,' W"',~ [,,"k

® 'ilde ,hell v",t'lal "eb

@ Longrtudl~<ll bulkhf'arl vertical \\cb

@ Botlom t'd"W""" W"'~ ,,,,,k

@SIIlJt'

@ Transver;(' \\eb lace rl"l~ @DEltloo,',

@ @

JJIJ - Resolution A744(/8j: Anr)f-'x R

I

Transverse section ouLline (To be used for longitudinal anrl trilnsverse members where typical

oil lanker ur oil/ore ship sections are not ilpplicahle)

REPORT 0\1 T'v\2·T 11) & 12)

0 ,Irr'flglil ,b.k pl"tinl',

0 Strin~el platp

0 Silee' st,"ke

(') ,,,j,, ,1,,·11 pl"trr'I',

(2) lld!-\e platlllB

CD p'"tlOm ,hell plating

0 K",'I pl"te

RcrORT ON T.\1~·T

@ H"tch lOi1l1ling'

8 D~rk pl.ltlfl~ 11<-1"'<'['11 11.,1< 1""

@ Ilot("h (()vero

@ e

RCPURT (JI', TM J.T

® LJeck IO"~ltudlnal,

0 l)¡oc k glfd,'",

@ Slwcr ,tlak(' lung,tudll,,,ls

@ LongilCldlnal bulkhc'ad IOp strak~

@ H"II!H" 1""~,II"IIf,,,I,

@ ~üttül1l BlrdelS

@ ~d~(' I"n~,tudinal<

@ I ""glludlt,,,111ulkhc<1d I,,\\c' strdk~

@ Sldf' <lwlllong,llld"",I,

@ Lün~jtudlllal bulklwad plst'lng ¡remJ'II,(k·,)

@ LOl1I',iludlfldl hulkhe¿d longiTurlilul, e II1IWI bolt"," jlldl",~ @ Inncr bottom longiludi,,,,I,

® @ @ @

~H'()~ t ()N T'vI4·T

@ Df'ck tran"~r<~ ,p"hp I,Hlk

@ Hottum lrclmvc"e centr~ t~nk

~.p. "', ' V 1" ( r,"'""l'''l' wln':, lan~

@ 51d~ ,hpll \elt",,1 w~IJ

® 1 on~itudlnal btllkh~arl wrtkal ""b

® Huttorn lr,m"crsc ",il1['. tank

@ Stluts

@ TransH"'~ "pI> fdC~ pl.ll~

@ 11 R tlo""

C0 @

Resolutlon A7-'I1fW): Annex /J 139

Typical transverse sections, showing all longitudinal memhers to be reporteu on TM2-T anu TM3-T

011 tankcr

Ore/oil ship

140 - Resolution A.744(18): Annex B

I

AGE ${, J

1 One section 01 deck pli'lling for the full beam of the ship within tlle Ci'llgo dreH (in way of a ballast tank, if any, or- a cargo ldnk Llsed primarily for water bi'llli'l~l)

2 MeaSUrE'rTH:,nts uf structural members subjcct to clme-up survey according to tables 2 and i oí lhi~ appendix, for general assessment and rt-'cording of corrosion pattern

J Suspect arcas

Table 1 - ThickrH:':,:, measurem('nt rC'quiremen15

--- ---- r 1---

S < J\(;¡: ~ 10

---~--10 < ACE ~ 15 AGE > 15

2 3 4 -----

Within lhe cargo area:

.·1 Each deck plate

.2 Onf' Iranwer~e section

2 Measurements of stl"UclUI i'll rTlt-'IIl!Jers subject to close-up sur-vey accordilrg lu

tables 2 and J of this appendix, for- gem--'ral a~~I:'"sment and recording of lorrO'iion pallerrr

4 Sf'If'cled wind and water strakes outside the li'llgn drl:'a

Within the cargo area:

.1 Each df'(k pldte

.L I wo transverse sf'cliolls

2 Mf'aslJren1l:'nt~ of structural mcmbcrs subject lo ( Inse-up survey according to tablcs 2 ami 1 (lf thi" appendix, for general assessmcnt and recording of corrosion pattern

J Suspect arcas

4 Selectcd wind and Wi'lter ~lrdkl:''' outside the cargo arca

5 AII wind and water strakes wilhin lilE:' cargo area

1 Within the cargo arei'l:

.1 l::ach deck plate

.2 Thrl:'l:' transverse sections

.1 FdCh buttom plate

2 Ml:'a"urements oi structural mCIllI1f'rs slJbjecl to close-up survey according lo tablf's 2 drrd 3 uf this appendix, tur general asse~srnt-'(rl ami recording of corros ion pattem

4 Sclected wind and water ~trakes outside the cargo arca

5 AII wind and water

I ","ke, wilh;n ¡he c"ego I area

_____ .o _

Resolu/ion A744(J8): Annex [J - 14J

AGE ~ :;

(A) ON' W[B FRAME RING - in a. hallast wing tank, if O1ny, or a cargo wing tank used primarily for wdter hallast

(B) ONE LJECK TRANSVERSF - in ¡¡

cargo tank

(LJ) ONE II<ANSVERSE BUI KHE¡\O - in a ballast tank

(O) ON[ TRANSVERSE BULKHE¡\D - in a centre tan k

T able 2 - C!ose-up "Il/w'y rcquirements

.s < ¡\C.E '.o-.. 10

2

(A) AII WFR FRAME RINGS - in a ballast wing Ldllk, ir a.ny, or a cargo wing tank used primarily tor water ballast

(B) ONE meK TR¡\NSVERSE - in cach of the remaining bdlld",l tanks, if any

(B) ONE meK I RANS­VERSE - in iI cilrgll wing tank

(B) ONE LJLCK TRANSVERSE - in two cargo centre tanks

(e) BOTH TRANS­VERSE BULKHEADS in a wing balla~t tank, ir any, or a cargo wlng tank used primarily ror water ballast

(D) ONE TRANSVLRS[ BUl KHFAO - in pach rcmaining ballast tank

(LJ) ON[ TRANSVERSE RlJLKHE¡\D - in a cargo wing tan k

(D) ONE TRANSVFR5F _ i

10 < AG[ ~ 15

3

(A) ALL WEB fKAML RINGS - in illI ba.lIa.s! tanks

(A) ALL Wl8 rRAME RINGS - in ¡¡ CiUgO

wing tank

(A) ON[ WEB FRAME RINC. - in each rernaining cargo wing tank

(e) ALL TKANWEKSl BULKHEADS - iJl illI cargo and b¡:¡lI¡:¡st tanks

(E) ONE LJLCK AND BOITOM TR¡\NS­VI::KSI:: - in each cargo cerllw lank

(F) As cllllsidcrcd necessaty by the Ad rn i ni s tra tion

BULKHEAD - In 1\VO I

__ ~_c_a_rgo centre !dnb _~

AGF> 1.1 ,

f As foc ShiP:,efened '" in colullin 3

Additionill transverses included a", dl:'l:'lllf'd ncccssary by the Adrnini",trCl lillll

(A) Complete transversc wcb frame ring including adjacent ~trllcllJrill IllPlllbers

(U) Deck tranwerse including ddjilcent deck structural rncmbers

(C) Transversc bulkhcad complete - including girder ~y~Lell1 ,md a.dja.cent mcmbcrs

(LJ) Transverse hulkhead luwt-'r pa.rl - including girder systcm and adjacent structural mernhl-'r<;

(E) Deck and bottom transverse including adjacent ~trllclllr<ll rnernbel-s*

(r) Additional complete lr<-lrlwf'r~e web trame ring

"NOIf', lar ore/oil ships appli('5 lü delk trdll,vl'"'' ""Iy

H1- Resolution A.744(18): Annpx F3

,

C!osC'-up survey requiremenl5 (Transverse seclions uf uil tankers and ore/oil ships showing typical area~ fUf

thir:kncs,> measurement in associatiun with close-up survey fC'quirements)

011 tanker: typlcal transverse seClion

,-------------~

CJ: =0'----'-'-- -- -:::!:_:::::::::-::::::T

,

----------------1 , ,

1 1 1 1 f-- 1 1 1 I : I , ~ 'Uiillii~i..iii..ii.liJ_L ______ J I _.J

Thickness lo be reporTed on TM3-T and TM4-T 8s ilppropnato

Or%ll Slllp: Iypical tlansvorso socho" <.:I()~e-up ~urvey

~-------------- -1 R -----------~-I-, ---- i

: 'I 'e®JandG) , ,

-

Olllankor_ typlcal tranvC>fsc bulkhe<ld

j--I--®¡ , ,

" ¡ i i I h,-l1-}-I-l ¡-o-~-t-~oH i

1 11 1 I ~ 1 ,1, 1 , 1 '1, 1 ,1, ' ~oLT' n-p-II 1 1 1 I 11 1 1 , ' , , , " ,

~r~TfloT-T-T ¡~it-i-t~~~i-l , I 1 1 1 1 1 i 1 1 1 1 I i i : """ DI l~ ________________ --------------

Thickness lo be reportad on TM5-T

Ore/oll Slllp Iyplcal Imnvcr,;e bulkhead

® e )

Upper slool

1

I

;

I 1 r ------

® , , / !

, LowOl stool , , , , ,

_00

, , , , , ,~D ! ' I :0 L _____________________ .

OOlJhlf!-hot!om lank : y - ------- ®J Thickness 10 be rel10rTerl en

TM:'l-T And TM4-T "-s appropllatc>

,------------1 : CIOS'HJ[l : I survoyawa I l ____________ J

Thlckness In hf! rf![1orted on TM5--¡

Recommendalions lor Iha extent and pattern ollhickness measuremenlS ara indicaled in annf!X 4_

Rf'H¡olulion A744(/8) - /43