Best Rigging Practices in Lifting
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Transcript of Best Rigging Practices in Lifting
1
“BEST RIGGING PRACTICESIN LIFTING OPERATIONS”
Presented by Ted Wang
Risk Management and Lifting Requirements at the Load Hook
Engineered Products and Design Requirements
The fundamentals of Proper Use
Inspection and Comprehensive Inspection Program
THE SPECIAL NATURE OF RIGGINGAND LIFTING OPERATIONS
(MOM-01)“BEST RIGGING PRACTICES
IN LIFTING OPERATIONS”
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EVERYLIFT
“BEST RIGGING PRACTICESIN LIFTING OPERATIONS”
#1
PLAN:
“RISK MANAGEMENT AND THE LIFTINGREQUIREMENTS AT THE LOAD HOOK”(MOM-01)
RISK MANAGEMENT AND THE LIFTING REQUIREMENTS AT THE LOAD HOOK
(MOM-01)
MY FOCUS TODAY IS ON THE “LOAD HOOK”RISK IS CREATED EACH TIME A LOAD IS MOVED BY LIFTINGRISK MANAGEMENT REQUIRES THAT THESE RISKS BE IDENTIFIED AND A PLAN OF ACTION CREATED AND FOLLOWED TO CONTROL, MINIMIZE OR ELIMINATETHESE RISKS
“RISK MANAGEMENT AND THE LIFTINGREQUIREMENTS AT THE LOAD HOOK”
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RISK MANAGEMENT AND THE LIFTING REQUIREMENTS AT THE LOAD HOOK
(MOM-01)
DETERMINE THE RISKS BY PROPERANALYSIS OF RISKS:
1. PROBLEMS AT THE START
2. PROPLEMS AT THE HARDWARE
3. PROBLEMS WITH SLINGS
“RISK MANAGEMENT AND THE LIFTINGREQUIREMENTS AT THE LOAD HOOK”
DETERMINE THE RISKS:COMMON PROBLEMS AT THE START
COMPETENT (TRAINED) RIGGERS NOT ASSIGNED
USE OF IMPROPER HAND SIGNALS
NOT INSPECTING GEAR “FREQUENTLY”
CAPACITY OF RIGGING GEAR NOT KNOWN
NOT KNOWING WHAT TO INSPECT FOR
SLINGS MISSING TAGS OR TAGS NOT LEGIBLE
IMPROPERLY MADE BELOW THE HOOK DEVICES
WIRE ROPE SLINGS FORMED WITH CLIPS
(MOM-01)“RISK MANAGEMENT AND THE LIFTINGREQUIREMENTS AT THE LOAD HOOK”
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TOO SMALL HARDWARE CONNECTED TO SLING EYE
TOO LARGE HARDWARE CONNECTED TO SLING EYE
BUNCHING OR PINCHING OF SYNTHETIC SLINGS
PLACING TOO MANY SLINGS IN HOIST HOOK, SHACKLES OR OTHER HARDWARE
LOOSE SHACKLE PINS OR OTHER CONNECTIONS
MISSING LATCHES ON HOIST HOOKS
IMPROPER SIDE LOADING OR MISALIGNMENT OF HARDWARE
(MOM-01)
DETERMINE THE RISKS:COMMON PROBLEMS WITH HARDWARE
“RISK MANAGEMENT AND THE LIFTINGREQUIREMENTS AT THE LOAD HOOK”
BEATING DOWN CHOKER HITCH
BASKET CAPACITY USED WHEN NOT VERTICAL
BASKET HITCH (WIRE ROPE)OVER SMALL DIAMETER
USE OF HORIZONTAL SLING ANGLES SMALLER THAN 30 DEGREES
CAPACITY OF BRIDLE NOT ADJUSTED FOR ANGLESLING LOADS NOT PROPERLY DISTRIBUTED
CHOKER AND BASKET HITCHES AT SLING ANGLE SMALLER THAN 60 DEGREES
(MOM-01)
DETERMINE THE RISKS:COMMON PROBLEMS WITH SLINGS
“RISK MANAGEMENT AND THE LIFTINGREQUIREMENTS AT THE LOAD HOOK”
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PRODUCTS THAT ARE ENGINEERED TO MEET REQUIREMENTS OF LIFTING
“BEST RIGGING PRACTICESIN LIFTING OPERATIONS”
#2
USE:
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
ENGINEERED PRODUCTS AND DESIGN REQUIREMENTS
(MOM-01)
ALL LIFTING EQUIPMENT MUST BE ENGINEERED, DESIGNED TO THAT ENGINEERING AND MANUFACTURED TO THAT DESIGN
LIFTING GEAR HAS SEVEREDEMANDS PLACED ON IT
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”
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OPERATING CONDITIONS FOR CRITICALLOAD CARRYING COMPONENTS INCLUDE:
DESIGN LOADUNUSUAL LOADINGSHOCK LOADSREPEATED CYCLE LOADSENVIRONMENTAL CONDITIONS, TEMPERATURE
OPERATING CONDITIONS IN LIFTING APPLICATIONS DEMAND PERFORMANCE
ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
ENGINEERING PRODUCTS FOR LIFTING APPLICATIONSMUST HAVE ALL OF THE PROPERTIES:
STRENGTHDUCTILITYFATIGUE RESISTANCETOUGHNESSTRACEABILITY
OPERATING CONDITIONS IN LIFTING APPLICATIONS DEMAND PERFORMANCE
ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
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STRENGTH - THE ABILITY TO WITHSTAND THE LOAD APPLIED.
DESIRABLE CHARACTERISTICSWITHSTAND RATED LOAD AND PROOF LOAD WITHOUT DEFORMATIONAT LOAD BELOW ULTIMATE STRENGTH, DEFORM AND GIVE INDICATION OF IMPENDING FAILURE
MATERIAL STRENGTHSAME MATERIAL DESIGNATION CAN BEHAVE DIFFERENTLY DUE TO PROCESSINGMATERIAL HARDNESS AFFECTS STRENGTHHARDENABILITY IS DETERMINED BY CHEMICAL COMPOSITION, AND ALLOYING ELEMENTS
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
ACTUAL PRODUCT STRENGTH IS ATTAINED ONLYIF ALL STEPS TAKEN:
DESIGNMATERIAL SELECTION
• MEASURED BY HARDNESS OR TENSILE TESTING
PROCESSING• HEAT TREATMENT DEFINES
HARDNESS/STRENGTH ATTAINABLEASSURANCE BY VERIFICATION
• ISO 9001• DESIGN VERIFICATION AND PRODUCT
AUDITS
STRENGTH – THE PROPER LEVEL MUST BE ASSURED
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
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DUCTILITY - THE ABILITY TO DEFORM IN AN OVERLOADED CONDITION
ADVANTAGES OF A DUCTILE MATERIAL
CATASTROPHIC BRITTLE FAILURE DOES NOT GIVE ANYINDICATION OF IMPENDING FAILURE
DEFORMATION IS A VISUAL INDICATION OF OVERLOAD, AND A SIGNAL THAT OTHER COMPONENTS WITHIN THE SYSTEM MAY NEED INSPECTIONDUCTILE MATERIALS ARE AFFECTED LESS BY GEOMETRIC IRREGULARITIES THAN BRITTLE MATERIALS
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
DUCTILITY - THE ABILITY TO DEFORM IN AN OVERLOADED CONDITION
TESTING TO DETERMINE DUCTILITYMATERIAL TENSILE TESTING PROVIDES ROA AND ELONGATIONTESTING OF SHOULD TYPICALLY YIELD 17-20% EL, AND 40-60% ROALOAD TESTING OF PRODUCT INDICATES AMOUNT OF DEFORMATION VISUALLYDUCTILITY IS EVIDENCED IN FRACTURE SURFACE
Ductile material and typical fracture appearanceBrittle material
and typical fracture
appearance“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
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FATIGUE RESISTANCE- ABILITY OF PRODUCT TO WITHSTAND REPEATED
APPLICATIONS OF LOADADVANTAGES OF FATIGUE RESISTANT PRODUCT
APPLICATIONS THAT ARE UNKNOWINGLY EXPOSED TO OTHER THAN STATIC LOADINGRESISTANCE TO FATIGUE DAMAGE DUE TO CYCLIC LOADING
STANDARDIZED TESTING PROTOCOL FOR FITTINGS
ACCELERATED CYCLE TEST OF PRODUCTATTAIN 20,000 CYCLES WITHOUT LOSS OF LOAD, WHEN CYCLED AT 1.5 X WLL UPPER LIMIT AND A LOWER LIMIT
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
FATIGUE RESISTANCE REQUIRES MANY THINGS
PROPERTIES THAT AFFECT FATIGUE LIFE INCLUDECHEMISTRY AND DESIGN OF THE PRODUCT
• ADDITION OF ELEMENTS SUCH AS ALUMINIUM, VANADIUM OR NIOBIUM USED AS GRAIN REFINERS, CONTROL GRAIN SIZE, IMPROVE TOUGHNESS, AND RESIST CRACK INITIATION AND GROWTH
• GEOMETRIC DISCONTINUITIES• SURFACE FINISH• RESIDUAL STRESS• DESIGN FOR STRESSES BELOW FATIGUE
STRENGTH OF MATERIAL“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
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TOUGHNESS - THE ABILITY OF THE PRODUCT TO RESIST FRACTURE
ADVANTAGE OF PRODUCTS THAT EXHIBITGOOD TOUGHNESS
TOUGH MATERIALS ARE SUPERIOR IF PRODUCTS ARE SUBJECTED TO ABUSE AND UNEXPECTED RAPID APPLICATION OF LOADSTOUGH MATERIALS ARE MORE LIKELY TO ABSORB INADVERTENT OVERLOADS WITHOUT FRACTURE
STANDARDIZED TESTING FOR NOTCH TOUGHNESS31 FT-LBS. (42 JOULES) ENERGY ABSORBED AT
TEST TEMPERATURE OF –4 DEGREE F (-20 DEGREE C)
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
TOUGHNESS REQUIRESMANY THINGS
METALLURGICAL CONDITIONS THAT IMPROVE TOUGHNESS
HEAT TREATING BY NORMALIZING, OR QUENCH AND TEMPERING (THE TEMPERED MARTENSITE MICROSTRUCTURE PRODUCED BY Q AND T GIVES GOOD TOUGHNESS)ADDITION OF ELEMENTS SUCH AS ALUMINUM, VANADIUM OR NIOBIUM USED AS GRAIN REFINERS, CONTROLS GRAIN SIZE, AND IMPROVE TOUGHNESSADDITIONS OF NICKEL AND CHROMIUMCLEANLINESS OF STEEL, CONTROL OF RESIDUAL ELEMENTS
“ENGINEERED PRODUCTS ANDDESIGN REQUIREMENTS”(MOM-01)
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ALL INDIVIDUALS WHO USE HARDWARE AND SLINGS
“BEST RIGGING PRACTICESIN LIFTING OPERATIONS”
#3
TRAIN:
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
THE FUNDAMENTALS OF PROPER USE
USERS SHALL BE TRAINED IN THE SELECTION, INSPECTION, CAUTIONS TO PERSONNEL, EFFECTS OF ENVIRONMENT, AND RIGGING PRACTICES
IDENTIFICATION SHOULD BE MAINTAINED BY THE USER SO AS TO BE LEGIBLE THROUGHOUT THE LIFE, THEY SHALL BE REMOVED FROM SERVICE IF MISSING OR ILLEGIBLE IDENTIFICATION
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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DETERMINING IF THEWORKING LOAD LIMIT IS ADEQUATE
KNOW THE WEIGHT OF THE LOAD
THE WEIGHT MUST INCLUDE ALL THAT IS SUPPORTED
KNOW WHERE THE CENTER OF GRAVITY IS
DYNAMIC LOADING WILL INCREASE THE LOADING OF THE RIGGING GEAR
SHOCK LOADING WILL GREATLY INCREASE THE LOADS AND ADVERSELY AFFECT THE RIGGING GEAR
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
THE SLING SEES THE COMBINED EFFECTS OF LIFTING AND CRUSHING KNOWN AS THE RESULTANT LOAD
AS HORIZONTAL SLING ANGLE BECOMES SMALLER, THE CRUSHING LOAD INCREASES
THE LOAD MULTIPLIER
LIFT
ING
LIFT
ING
CRUSHING CRUSHING
SLING LOAD SLING LOAD
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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LOAD UNDER CONTROL?
SLINGS CAPTURE CENTEROF GRAVITY?
LOAD LIFT LEVEL?
LOAD STABLE?
TAG LINE REQUIRED?
ETYRTRUYTYUTYU
ETYRTRUYTYUTYU ETYRTRUYTYUTYU
BEAM CAPACITY
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
RIG TO THE CENTER OF GRAVITY
CENTER OF GRAVITY IS DIRECTLY BELOW THE LOAD HOOK
&CONNECTION TO LOAD IS ABOVE CENTER OF GRAVITY
ETYRTRUYTYUTYU
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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THREE AND FOUR LEG BRIDLEAND LOAD CONTROL
EXCELLENT LOAD CONTROLIS ACHIEVED
THE LOAD ON EACH LEG WILL BE EQUALONLY IF THE C.O.G. IS IN THE MIDDLE OF THE PICKPOINTS, THE LEGS EQUAL IN LENGTH AND THELOAD FLEXIBLE
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
MULTIPLE LEG SLINGSLOAD DISTRIBUTION
THE LOADS CAN BE PROPERLY DISTRIBUTED IF THESLING LENGTH CAN BE ADJUSTED.
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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THERE ARE VARIOUS METHODS OF USING LIFTING BEAMSBASIC BEAMS
SPREADER BEAM
STIFF BACK BEAM
DUAL LIFT BEAM
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
DO NOT OPEN SLING EYE GREATER THAN 50% OF
EYE LENGTH
THICKNESS OF HOOK MUST BE LESS THAN
1/2 L
L L
CONNECTION OF SLINGS TO HOOKS
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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HOOKSIMPROPER LOADING
DO NOTTIP LOAD, SIDE LOAD OR BACK LOAD
HOIST HOOKS
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
THE INCLUDED ANGLEHOIST HOOKS
INCLUDED ANGLE
THE SLINGS MUST SIT IN THEBASE OF THE HOOK AND CLEAR OF THE LATCH
THE WORKING LOAD LIMITIS VALID FOR A SINGLELEG OR MULTIPLE LEGSAS LONG AS INCLUDEDANGLE DOES NOTEXCEED 90 DEGREES
45° 45°
90° MAXIMUM
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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FOULING OF LATCH
CORRECT!SLING IN BASE OF HOOK
INCORRECT!SLING FOULED ON LATCH
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
SHACKLE AS ACOLLECTOR RING
USE ONLY SCREW PINAND BOLT-TYPESHACKLES AS COLLECTOR
ORIENTATE SHACKLESO PIN IS UP AND BOW IS DOWN
INCLUDEDANGLE
120° MAXIMUM
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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BOLT-TYPE SHACKLES
USE BOLT-TYPESHACKLES WHEN A PERMANENT OR LONG TERM CONNECTION
USE SCREW PIN SHACKLES WHEN IT WILL BE A TEMPORARY CONNECTION
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
CONNECTION OF SLINGSTO SHACKLES
SHACKLE MUST BE LARGE ENOUGH TO AVOID PINCHING OF SYNTHETIC SLINGS
DIAMETER OF SHACKLE MUST BE GREATER THAN WIRE ROPE DIAMETER IF NO THIMBLE IN EYE
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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POINT LOADING OF SHACKLESPOINT LOADING OF CROSBYSHACKLE BOWS AND PINS IS ACCEPTABLE AS LONG AS LOAD IS REASONABLY CENTERED
DO NOT LOAD SHACKLE PIN TO SHACKLE PIN“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
SPECIAL SHACKLES
SYNTHETIC SLING SAVER
SHACKLES
WIDE BODY SHACKLES
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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A MASTER LINK WITH SUB-LINKS ARE RECOMMENDEDFOR THREE AND FOUR LEG
CHAIN SLINGS
SINGLE MASTER LINKIS REQUIRED FOR
SINGLE AND TWO LEG CHAIN SLINGS
HINGE POINTSCHAIN SLINGS
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
SUB-LINKS ARE BEST PRACTICE FOR ALL TYPES OF THREE AND FOUR LEGS SLINGS
IMPROVED PRACTICE OVER PLACING DIRECTLY IN HOOK
HINGE POINTSWIRE ROPE AND SYNTHETIC SLINGS
BEST PRACTICEWITH SUB-LINKS
“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
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HOIST RINGS
ENGINEERED
CHAIN
SIDE PULL
WEB SLING
FORGED BOLTED
STREET PLATE“THE FUNDAMENTALS OF PROPER USE”(MOM-01)
REGULAR INSPECTION PROGRAM
“BEST RIGGING PRACTICESIN LIFTING OPERATIONS”
#4
ESTABLISH:
(MOM-01)“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”
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INITIAL: PRIOR TO INITIAL USE
FREQUENT: EACH DAY BEFORE THE RIGGING HARDWARE IS USED, SEMI-PERMANENT AND INACCESSIBLE LOCATIONS WHERE FREQUENT INSPECTIONS ARE NOT FEASIBLE SHALL HAVE PERIODIC INSPECTIONS PERFORMED
THE PERIODIC INSPECTION :NORMAL SERVICE – YEARLYSEVERE SERVICE – MONTHLY TO QUARTERLYSPECIAL SERVICE – AS RECOMMENDED
BY A QUALIFIED PERSON
INSPECTION OF RIGGING SLINGS AND HARDWARE - FREQUENCY
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
INSPECTION OF SHACKLESDEFORMATION
ANY SIGNIFICANT PERMANENTDEFORMATION, OR CHANGE IN SHAPE,INDICATES IT HAS BEEN OVERLOADED ANDMUST BE REMOVED FROM SERVICE
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
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DEFORMATIONHOOKS
ANY VISIBLE APPARENT BEND OR TWIST FROM THE PLANE OF THE UNBENT HOOK
ANY DISTORTION CAUSING AN INCREASE IN THROAT OPENING OF 5% OR MORE, NOT TO EXCEED ¼” OR AS RECOMMENDED BY THE MANUFACTURER
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
INSPECTION OF HARDWAREWEAR
10% OR MORE REDUCTION IN OF ANY SECTIONAL DIMENSION INDICATES IT HAS EXCESSIVE WEAR, MEASURE BY COMPARING TO A SECTION OF FITTING THAT HAS NO WEAR, OR TO THE CATALOG DIMENSIONS
MAKE SURE IDENTIFICATION IS LEGIBLE“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
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INSPECTION OF HARDWARECRACKS AND SHARP NICKS
ANY CRACK, SHARP NICK OR GOUGE INTHE SURFACE OF ANY FITTING CAN CAUSESTRESS CONCENTRATION AND IS CAUSEFOR REMOVAL FROM SERVICE
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
INSPECTION OF RIGGING HARDWARE REMOVAL CRITERIA FOR THREADS
EXCESSIVE THREAD DAMAGE OR WEAR OF SCREW PINS, SHANK HOOKS AND TURNBUCKLES:
REMOVE FROM SERVICE IF THREADS DAMAGED OR CORRODED FORMORE THAN 20% OF THE LENGTH ENGAGEDIN EAR OF SHACKLE OR NUT OF HOOKOR TURNBUCKLE
ENGAGED LENGTH
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
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INSPECTION OF HARDWARE HEAT DAMAGE
HEAT DAMAGE CAUSED BY EXPOSURETO TEMPERATURES ABOVE 400°F
WELD SPLATTERS
ARC STRIKES
EXPOSURE TO EXCESSIVE TEMPERATURE WILL DAMAGE THE HEAT TREATMENT AND MATERIAL STRENGTH, SEVERE WELD SPLATTERS AND ARC STRIKES CAN CREATE STRESS CONCENTRATION AND ARE CAUSE FOR REMOVAL FROM SERVICE
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
INSPECTION OF HARDWAREPROPER FUNCTION
MISSING LATCHES WHEN REQUIRED
DAMAGED LATCHES WHEN PRESENT
SWIVEL BEARINGS THAT LACK THE ABILITY TO FREELY ROTATE WHEN NOT LOADED
LOOSE OR MISSING NUTS, BOLTS, COTTER PINS, SNAP RINGS, OR OTHER FASTENERS AND RETAINING DEVICES
MALFUNCTION OR MISSING LOCKING DEVICES IS CAUSE FOR REMOVAL FROM SERVICE
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
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INSPECTION OF WIRE ROPE SLINGSREMOVAL CRITERIA
MISSING OR ILLEGIBLE SLING IDENTIFICATION
EXCESSIVE BROKEN WIRES
SEVERE LOCALIZED ABRASION OR SCRAPING
KINKING, CRUSHING, BIRDCAGING,OR ANY OTHER DAMAGE RESULTING IN DAMAGE TO THE ROPE STRUCTURE
EYE
BODY
MECHANICALSPLICE
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
INSPECTION OF WIRE ROPE SLINGSREMOVAL CRITERIA
EVIDENCE OF HEAT DAMAGE
END ATTACHMENTS THAT ARE CRACKED, DEFORMED, OR WORN
SEVERE CORROSION OF THE ROPE, END ATTACHMENTS, OR FITTINGS
OTHER CONDITIONS, INCLUDING VISIBLE DAMAGE, THAT CAUSE DOUBT AS TO THE CONTINUED USE OF THE SLING
EYE
BODY
MECHANICALSPLICE
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
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INSPECTION OF CHAIN SLINGSREMOVAL CRITERIA
MISSING OR ILLEGIBLE SLING IDENTIFICATION
CRACKS OR BREAKS
EXCESSIVE WEAR, NICKS, OR GOUGES
STRETCHED CHAIN LINKS OR COMPONENTS
BENT, TWISTED, OR DEFORMED CHAIN LINKS OR COMPONENTS
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
INSPECTION OF CHAIN SLINGSREMOVAL CRITERIA
EVIDENCE OF HEAT DAMAGE
EXCESSIVE PITTING OR CORROSION
LACK OF ABILITY OF CHAIN OR COMPONENTSTO HINGE FREELY
WELD SPLATTER
OTHER CONDITIONS, INCLUDING VISIBLE DAMAGE, THAT CAUSE DOUBT AS TO THE CONTINUED USE OF THE SLING
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
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INSPECTION OF WEB SLINGSCAUSE FOR REMOVAL
MISSING OR ILLEGIBLE SLING IDENTIFICATION
ACID OR CAUSTIC BURNS
MELTING OR CHARRING OF ANYPART OF THE SLING
HOLES, TEARS, CUTS, OR SNAGS
BROKEN OR WORN STITCHINGIN BEARING SPLICES
EXCESSIVE ABRASIVE WEAR“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)
INSPECTION OF WEB SLINGSCAUSE FOR REMOVAL
KNOTS IN ANY PART OF SLING
DISCOLORATION AND BRITTLE OR STIFF AREAS ON ANY PART OF THE SLING, WHICH MAY MEAN CHEMICAL OR ULTRAVIOLET / SUNLIGHT DAMAGE
FITTINGS THAT ARE PITTED, CORRODED, CRACKED, BENT, TWISTED, GOUGED, OR BROKEN
OTHER CONDITIONS, INCLUDING VISIBLE DAMAGE, THAT CAUSE DOUBT AS TO THE CONTINUED USE OF THE SLINGS
“INSPECTION AND COMPREHESIVE INSPECION PROPGRAM”(MOM-01)