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Annexure ITechnical Specification of Industrial Gases Pipelines

NO. HRK/INDUSTRIA GAS!S PIP! IN!S

1. ScopeThe specification cover supply, erection, testing and commissioning of a completecomprehensive Industrial gases pipelines i.e. (i !xygen gas pipelines ii "! # gas

pipelines $ iii %A gas pipelines including safety fittings and other features onTurn &ey 'asis in "arriage epair )hop, *eavy epair )hop and +ight epair)hop of *arnaut ail &ar hana.

".# Description of $or%s#.1 The gas pipeline -ould generally run overhead position throughout inside shops

at the height stipulated normally along the structure column and shall /eclamped on support /rac et to /e fixed on the column /eam girder etc. !utside

shop, the pipe line shall /e clamped on /rac et carried on support, structure-ithout infringing any e0uipment structure suita/le for -ind and other loads. Thesupport structure should /e fa/ricated from standard steel section conforming toI) ##2 latest version.

#.# 3ain lines for all three gas pipelines shall /e of 3) seamless pipes of 4 mm 5' -ith 6.# mm -all thic ness conforming to I) 1#67 (Pt8I 8# 4 and of reputed ma e.

All pipelines shall /e connected at the corners /y suita/le el/o- 9oints and pipe /ends and sufficient expansion loop and /ends shall also /e provided.

#.6 %rop lines for all three gas pipelines shall /e of 3) seamless pipes of #2 mm 5'-ith 6.# mm -all thic ness confirming to I) 1#67(Pt8I # 4 and of reputedma e and terminated at a height of 1.2 3 from the floor level and clamped rigidlyusing re0uired fittings.

#.4 The -elding /ra:ing for 9oining pipelines shall /e done as per relevant I)standards.

#.2 The standard pressure gauges shall /e provided at /eginning and end of each main lines for all three gases -hich should /e fitted at height from floor level for easy

visi/ility of readings.#.; The system shall /e fitted -ith all safeguard and safety feature stipulated /y

statutory /oard and other regulations enforce from time to time such as Indian explosive acts and Indian factory act etc and shall /e executed as per relevant Indian standards.#.< All the pipelines shall /e cleaned -ith nitrogen gas suita/le other gases for lea testing of pipelines.#.= Painting All pipes shall /e de8greased, cleaned inside and outside including -elded portion and painted as per the specification I) #64 #6#17#4=

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6. Tenderers satisfaction a&out re'uire(ent .6.1 The tenderers shall /e satisfied himself a/out the re0uirement through study

of the site condition, the layout dra-ings and other relevant dra-ingsavaila/le in or shop Pro9ects !ffice.

6.# The tender is advised to visit carriage -or shop li e Tirupati, Peram/ur, in his

o-n interest for detailed understanding of application and re0uirement of@ases pipelines system.

4. The successful tenderer shall ha)e to suppl* the (aterial as (entioned inthe schedule of +or% .

Any item left in the schedule of material and found essential in the opinion oftenderers for successful installation and commissioning of Industrial gases

pipelines may also offered separately.

,. Pressure testin-

The -or ing pressure for the pipelines vis I !xygen gas pipelines gas =g cm# ii "!# gas pipelines 4 g cm# and %A gas pipelines .;2g cm#. All the gas pipeline should /e tested for lea age and pressure drop at

least t-o times the -or ing pressure. )oap solution or other suita/le shall /eapplied all -elded 9oints, flange fittings valves etc to find out any lea .Burther each pipelines -ill /e charged -ith the respective gas and -ill /e eptin the system for #4 hours to find out any pressure drop.The contractor shouldma e on his arrangement for re0uisite e0uipment gadget to conduct thetesting. The -hole system along -ith installation should /e certified /y thecontractor for the satisfactory -or ing to the rail-ay.

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Technical Specification of o(pressed Air Pipeline 5o. * & AI PIPC+I5C)

1. Scope

The specification cover supply, erection, testing and commissioning ofcompressed ait pipeline complete -ith valves, filter cum moisture separators,flanges, flo- meter and other misc. fittings in the shops of *arnaut rail&ar hana on TD 5 &CE 'A)I).

# O& ecti)e

The o/9ective is to set up a complete system that -ill /e capa/le to supplythe compressed air pressure upto 1 &g cm# to various consuming points to

cater the essential load -ithin the relevant shops of or shop.

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6.1

6.#

6.6

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Description of the s*ste(

The system shall /e provided -ith all necessary piping, fittings, isolating andstop valves, filter cum moisture separators, loops fitted -ith condensator,do-n ta e pipes, extensions, connections and misc fittings. The air pipelineshall generally run over the head position throughout inside shop at heightstipulated normally along the structure column and shall /e clamped onsupport /rac et to /e fixed on the column /eam girder etc. !utside shop, the

pipelines shall /e clamped on /rac ets carried on support structures -ithoutinfringing any e0uipment structure suita/le for -ind and other load as perI) =4 #6#17#4=

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6.2.1

6.;

Pipe us to normal /ore diameter of = mm shall conform to I) 1#67 (Part8Ilatest version and shall /e of C *eavy Fuality.

%o-n ta e point shall /e provided in relevant shops detail as under

)hop Fty Dnit

"arriage repair )hop 6 5os*eavy epair )hop 1; 5os+ight epair )hop 1; 5os'ogie repair )hop 1# 5os)heet 3etal )hop 1 5osPaint )hop # 5osPlant "are )hop # 1; 5os!utgoing )hop 14 5os

heel $ Axle )hop and oller 'earing)hop

1; 5os

Trimming )hop $ Train +ighting )hop 1# 5os

4.

4.1

4.#

4.6

2

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Tenderers satisfaction a/out re0uirements

The tenderer shall /e satisfied himself a/out the re0uirement through study ofthe site condition, the layout dra-ings and other relevant dra-ingsavaila/le in -or shop pro9ects.

Tenderer is advised to visit carriage -or shop +i e Tirupati, Peram/ur, in hiso-n interest for detailed understanding of application and re0uirement ofcompressed air pipeline system

If the contractor feels that information furnished is any -ay in ade0uate to meetthe re0uirement specified, he shall /ring out the area of such deficiency -ithcomplete -or ing sheet

The successful tenderer shall have to supply the material as per the schedule of-or . Any item left in the schedule of material and found essential in the opinion

of tenderers for successful installation and commissioning of compressed air pipeline may also 0uote separately.

"ontractor shall /e responsi/le for successful commissioning of compressed air pipelines systems -ith compressors in integration.

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