supply of 30 cu.m liquid nitrogen mobile tank … · 30 cu.m liquid nitrogen mobile tank...

30 Cu.M Liquid Nitrogen Mobile Tank specifications

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SUPPLY OF 30 CU.M LIQUID NITROGEN MOBILE TANK

TECHNICAL SPECIFICATIONS:

Scope:

Design, engineering, fabrication, testing and delivery of 30 Cu.m liquid

nitrogen mobile tanker mounted integrally on semi trailer to SDSC, SHAR.

1.0 Technical Specifications:

1.1 Type Horizontal double wall Tank, cylindrical

configuration mounted on semi trailer and with

integral valve unit. (Hauler is in purchaser scope)

1.2 Volume 30 KL

1.3 Medium Liquid Nitrogen (LN2)

1.4 Quantity 1 No.

1.5 Ullage Volume 5%

1.6 Cleanliness Oxygen clean standard

1.7 Evaporation loss when LN2 is

filled to 90% capacity

Percentage of evaporation less than 0.20% per

day(at ambient temperature of 300K and tank at

atmospheric pressure)

Inner Vessel

1.8 Design Code ASME Sec.VIII,Div.1.

Wherever other codes are employed, design

calculations as per ASME Sec.VIII,Div.1. also

shall be furnished duly approved by TPI.

1.9 Operating pressure /MAWP 10 Bar (g) and shall with stand vacuum to a level

of 1 X 10E-3 torr

1.10 Design pressure kg/cm2 (1.25 x MAWP + vac+ Static Head)

1.11 Design Temperature 77K to 423K

1.12 ND Test 100% Radiography for all butt weld joints

1.13 Shell Material: Stainless Steel SA 240 Grade SS 304L/316L as

per ASTM or equivalent. Plates which are

selected for the fabrication shall be of 100% UT

tested for detecting defects like laminations and

surface/ internal cavities etc., prior to its use.

Cold/Hot stretch formed materials are not

allowed.

1.14 Heat treatment Solution annealing to be done .

Cold impact strength tests shall be carried out

on all materials subjected to LIN medium.


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Outer Vessel

1.15 Design code ASME Sec.VIII,Div.1

Wherever other codes are employed, design

calculations as per ASME Sec.VIII,Div.1. also shall

be furnished duly approved by TPI.

1.16 Operating pressure 1.0 Bar (g) & vacuum of 1 X 10-3 torr

1.17 Design temperature 253K to 343K

1.18 Radiography /UT 25% for all butt joints

1.19 Shell Material & corrosion

allowance over and above the

design thickness

Carbon Steel SA516 Gr 70 or equivalent with 3mm

corrosion allowance

Cold/Hot stretch formed materials not allowed.

1.20 Insulation & Vacuum for

tanks

• Multi layer insulation of Aluminum Mylar with glass fibre spacer paper are similar.

• Other insulations such as perlite not allowed. • Level of vacuum shall be 1 X 10-3 mm Hg. • The selection of materials and quantity of adsorbents shall be in such way that no

restoration/regeneration of the absorbent is

necessary for a duration of 5 years.

1.21 Piping circuit All the piping circuits (pipes, valves,check valves,

filters including PBU ) shall be designed for 10 Bar

(g) operating pressure. The valves used for

cryogenic service shall be of bellow sealed

construction.

Preferred make: SA Ireland/Velan/

CPC Cryolab/cryogenmash/RDIME.

1.22 Protection of Material All the materials shall be degreased before

chemical passivation. The inner and outer vessel

shall be chemically pickled and passivated.

All exposed support materials shall be shot blasted

and painted(Primer coat of 125-150 micron DFT and

finish coat of 50-60 micron DFT).

1.23 Thermal Treatment of

Materials

For all pressed/formed items like dished ends,

solution treatment shall be carried out.

1.24 Operation life More than 20 Years


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Semitrailer specifications:

1.25 Capacity Payload carrying capacity shall be to meet the

tanker with 100% load and following combined load

combinations.

Longitudinal acceleration 2 g

Transverse acceleration 2 g

Vertical acceleration 1.5 g up and 2 g down

(including self weight)

1.26 Operating Speed 60kmph Under No Load and 40 kmph – with full load

1.26 Operating environment Operating Temp 10 deg. C to 50 deg. C Relative Humidity - 95%

1.27 Prime mover to be used by

user

1. Ashok Leyland Hippo Hauler Model: 1/13 of Wheel

Base 3810mm, King pin Off set – 381 mm

2. Ashok Leyland Hippo Hauler Model: 1/4 of Wheel

Base 3810mm, King pin Off set – 381 mm

3. VOLVO Make FM 400 model heavy duty hauler of

Wheel Base 3885 mm, King pin Off set – 385 mm

4. VOLVO Make FH 520 model heavy duty hauler of

Wheel Base 3885 mm, King pin Off set – 385 mm

5. AMW make 4923-3850 WB 6 X4 TRACTOR of

375 mm king pin Offset.

6. TATA make Prima LX 4923.S model, heavy duty

hauler of 3890 mm Wheel Base & 385 mm king pin

Offset.

(Hauler is in purchaser scope)

2.0 PIPING AND INSTRUMENTATION SCHEME:

The Piping and Instrumentation scheme shall be as per enclosed P&I diagram

which includes

• Liquid fill/drain circuit & Liquid delivery circuit with centrifugal pump • Pressurisation circuit • Safety and venting circuit • Pressure and level Measurement circuit: • Vacuum Monitoring circuit


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2.1 LIQUID FILL/DRAIN CIRCUIT:

Towards filling & passive drain of LN2:

a) To fill/drain the vessel with LN2, a 50NB line with manual isolation valveVM2 shall be provided. The valve shall be bi-directional valve for

ensuring minimum pressure drop. The end of the line shall be terminated

with 50NB 300# flange.

b) A thermal relief valve VSF7 for releasing entrapped vapors shall be provided as shown.

Towards Pump delivery of LN2:

a) To deliver LN2, an 80NB line with manual isolation valve VM1 shall be provided in suction of pump through Filter FL1 and with manual isolation

valve VM10 provided in delivery of pump .

b) The pump shall be centrifugal type with 12 Bar(g) discharge pressure and shall be of reputed make like cryomec. The discharge flow shall be 10kg/s

(min.).The drive shall be electric (3phase 440V). The party shall supply with

standard industrial end connector.

c) Pressure gauge (PG-3) shall be provided with the isolation valve V08 as shown in the P&I.

a) Manual drain valves VM9 & VM11 shall be provided for pump chilling and delivery line chilling. A check valve VC3 shall be provided as shown in

delivery line.

d) The end of the line shall be terminated with 50NB 300# flange. e) Thermal relief valve VSF4 ,VSF5 &VSF6 shall be provided as shown. 2.2 PRESSURISATION CIRCUIT:

b) To enable Liquid withdrawal at a rate of 3 Kg/s suitable capacity Pressure building unit/coil shall be designed and installed on the tank. The ambient

temperature shall be taken as 288K to 318K. Pressurisation coil shall have

a manual isolation valve VM4 at the inlet and VM5 at the outlet. A pressure

regulator VR1 shall be provided at the inlet/outlet of coil. A thermal relief

valve VSF3 shall be provided as shown. A check valve VC2 shall be

connected as shown to release the locked up.

c) The evaporator shall be designed for a continuous duty cycle of 3 hrs.

2.3 SAFETY AND VENTING CIRCUIT:

a) To protect the inner vessel, two safety relief valves VSF1 and VSF2 designed as per ASME code regulations at 1.1 times of MAWP shall be

provided. For maintenance purpose a three way manual isolation valve


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VM6shall also be provided. These devices shall be sized for outer vessel

fire exposure and vacuum loss.

b) Burst diaphragms RD1 & RD2 shall be incorporated in parallel designed to 1.2 times of MAWP.

c) The Burst diaphragms RD3 shall be provided for outer vessel safety to burst at a pressure of 0.7 Bar(g)

d) For safe venting of evaporation losses when the vessel is with liquid , a manual valve VM7 of 25 NB size shall be provided with a back pressure

regulator VR2.

e) During manual operations for safe venting of vapors a 50 NB manual valve VM8 with a Check valve VC1 shall be provided.

2.4 PRESSURE AND LEVEL MEASUREMENT CIRCUIT:

a) Pressure and level of the medium shall be monitored with pressure/level gauges (PG-1&2 & LG-1) and these shall be provided with the isolation

valves as shown in the P&I.

b) A provision for mounting the Pressure/Level transmitters in future shall be made. The transmitters are in purchaser scope.

2.5 VACUUM MONITORING CIRCUIT:

a) For vacuum monitoring of the vessel jacket space a thermo-pirani gauge TC1 with isolation valve W2. Towards pump out 40 NB vacuum valve W1

shall be provided.

3.0 DESIGN REQUIREMENTS:

3.1 The LN2 tank shall be designed and fabricated in accordance with

ASME Sec-VIII Div-1 or equivalent. Wherever other codes are

employed, design calculations as per ASME Sec.VIII,Div.1. also shall be

furnished duly approved by TPI.

3.2 The acceleration loads during transportation of 100% filled vessel shall

be for following combined load combinations & shall satisfy SMPV rules



Vertical acceleration 1.5g up & 2 g down (including self weight)

3.3 Speed of the tank during transportation shall be taken as 40 KMPH

with product mass. Tank shall be treated as mobile tank.


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3.4 Design requirements of semi trailer:

a) Capacity Payload carrying capacity shall be to meet the

tanker with 100% load and following combined load

combinations



Vertical acceleration 1.5 g up and 2 g down

(including self weight)

b) Operating Speed 60kmph under No Load and 40 kmph with full Load

c) Operating environment Operating Temp 10 deg. C to 50 deg. C & RH - 95%

d) Prime mover to be used by user

Ashok Leyland Hippo Hauler Model: 1/13, Wheel Base 3810mm, King pin Off set – 381 mm

Ashok Leyland Hippo Hauler Model: 1/4, Wheel Base 3810mm, King pin Off set – 381 mm

VOLVO Make FM 400 model 49t GTW hauler of Wheel Base 3885 mm, King pin Off set – 381 mm

e) Design considerations Based on the overall dimensions of tanker, supplier

need to check for Stability ratio which need to be

less than 0.9 as per the current road safety norms

for hazardous goods transportation prescribed by

agencies like PESO, Nagpur. Design calculations for

stability ratio less than 0.9 need to be submitted .

The Overall length of the tractor trailer

combination, Overall height (from ground to top of

the CONTAINER), Axle loads shall be within the

permissible limits of CMVR Rules 1989 & IS 8037

and relevant Automotive Industry Standards (AIS).

Longitudinal Angle of inclination of Semi trailer in

relation to the Prime-mover shall be considered as

maximum 60 towards front & maximum 70 towards

rear & Lateral angle of inclination of Semi trailer

shall be considered as 30 on sideways (either sides).

Free space between the Prime-mover and trailer

shall be maintained as per the IS 8007-2004.


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f) Rubbing Plate The Trailer Rubbing plate shall be so constructed

that the area shall be capable to take the Reaction

load imposing on the King pin.

Minimum area of the rubbing plate shall be 1200 mm

X 1200 mm.

Rubbing plate height from the ground shall be

1400mm + 25 & -- 0 mm shall be maintained (Refer

Fig no: 2)

The clear space between the Prime mover cabin

rear to the front edge of the trailer platform shall

be a minimum of 1450 mm. (Refer drawing no: 2),

such that 900 turn can be taken up by the Prime

mover without trailer obstruction.

Distance between the center of the Kingpin to the

front edge of the protruding component underneath

the chassis, shall be minimum 2400 mm (Refer Fig

no: 2).

Gooseneck platform projection from King pin centre

line shall be in between 750 mm & 900 mm (Refer

Fig no: 2).

Gooseneck shall be designed to carry uniformly

distributed load of minimum 2000 kg.

g) King Pin Details 3.5 Inch King pin of reputed make preferably

JOST, YORK, GF, BPW, SAF HOLLAND

Conforming to IS 6763 Part 2 or Equivalent or

Higher

King pin D-Value shall be mentioned in the Design

report.

Manufacturer’s Test Certificate shall be provided

along with supply as per standards.

h) Axles Minimum 2 nos. of Standard axle of adequate

capacity shall be provided.

The axle shall be standard make and shall be

procured from reputed manufacturers like TATA / Automotive Axles / FUWA / BPW / TEMKA / YORK or Axles India Ltd., and make shall be mentioned in the offer.

Number of axles, axle spacing and axle loading shall


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be conforming to Central Motor Vehicle Rules

(CMVR) - 1989

The hubs and brake drums shall be separate for

attending to brake repairs easily without removal of

hub.

Axle bearings used shall be of following reputed

makes only. SKF, FAG, TATA TIMKEN.

Inner wheels shall be accessible easily for attending

to maintenance, tyres changing works and easy air

filling.

Suitable provision shall be given in the hub for

removal and replacing of bearing cones easily from

the hub.

The axle shall be tested with ultrasonic tests as per

ASTM/ANSI/388-78 Standard, for any internal

defects before fitting to the trailer.


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i) Suspension

The Trailer suspension system shall be provided

with sufficient capacity Semi-Elliptical laminated

leaf springs of reputed makes such as Lamina /

Canara / Jona Woods, YORK etc

Semi-elliptical leaf springs shall conform to IS :

1135-1973

The suspension shall consist of rigid trailing arm

axle adapters, shock absorbers and air spring

pistons.

j) Brake system without

fail-safe brake

The trailer shall be provided with twin line (Service

and Emergency line) air brake system coupled to

hauler brake through ISO palm couplings and

actuated from hauler (preferably of M/s TVS /

WABCO make)

All axles shall be fitted with service brakes and Fail

safe brake systems.

Pneumatically operated parking brake at rear wheels

with control mechanism underneath the trailer

platform.

All brake actuation system shall be provided with

slack adjuster for adjusting brake shoes.

The trailer shall be fitted with an air reservoir

having capacity to give a minimum of four full brake

applications with pressure drop from cut-out to 0.7

times the cut-in pressure.

Brakes on each axle shall be capable of producing

peak retarding force equal to 0.45 times the rated

load on the axle.

The trailer air reservoirs shall be provided with

Auto drain valve. All brake parts, air regulator valves shall be TVS

Sundaram Clayton / WABCO make.

Trailer shall be fitted with an Emergency Brake

Relay Valve which automatically applies trailer

brakes in case accidental de-coupling of fifth wheel

coupler.

Brake system pneumatic hoses shall be routed

properly without hanging freely.


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k) WHEELS & TYRES Std. Ring type wheel drums of Wheels India or reputed make shall only be used.

Heavy-duty Tubeless tyres of suitable size and ply

rating to withstand highway operation shall be

provided.

Axle shall be provided with Dual tyres on each side.

The tyres shall be of reputed manufacturers, MRF /

APOLLO / CEAT / BIRLA / TVS / EMRALD /

CONTINENTAL / MICHELIN / GOODYEAR

/BRIDGESTONE, and available freely in the market.

Long inflation necks or adopters shall be provided

for inflation of inner wheels and for checking tyre

inflation pressure.

One number of Stepney tyre assembly shall be

provided which shall be mounted underneath the

trailer platform with suitable mountings &

mechanisms.

l) Landing legs , 2 speed worm gear type

The trailer shall be provided with two sets of

suitable capacity Two speed Landing Gears, one at

front and the other at rear, either one of the

Manufactures namely, JOST/ YORK / FUWA / SAF Holland.

The Landing gears shall take minimum 1.25 time the

static load of the rated payload and self weight of

the trailer.

Lifting capacity : minimum 20t (20000 kg)

Static capacity : minimum 40t (40,000 kg)

m) Electrical system All accessories shall function on 24 Volt DC supply

from Prime-mover SLI Batteries.

Shall be provided with SAE J 560 / IS 13491-2005

/ ISO 1185, 7 pole connector of type 24N with 7

core cables, for connecting Trailers electrical

system to Prime mover.

Wiring shall be covered in a safety conduit and


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properly terminated so that no exposed loose wires

are visible.

The trailer shall be provided with combination type

tail lamp fittings consisting of Parking lamps, Brake

lamps, Side indicators and number board lights.

Trailer sides shall be provided with Red light

fittings with separate switch control.

All electrical wiring materials preferably of Finolex

make or equivalent reputed manufacturers and

routed through GI heavy duty piping with double

pole wiring.

All electrical wiring shall be underneath the chassis

with minimum bends and with NO JOINTS.

All light fittings shall be of LUCAS TVS, LUMAX or

LUMAN make and weather proof construction.

Male and Female sockets shall be provided with

sufficient length of cables to connect with the

hauler supply point.

Electrical cable termination points shall be with as

tight protection.


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n) Other Fittings

Side Under run Protection Device (SUPD) shall be

provided as per IS 14812

Rear Under run Protection Device (RUPD) shall be

provided as per IS 14682

Shall be provided with SAE J 560, 7 pin connector

with 7 core cable from trailer to prime mover.

Reflex reflectors of sufficient numbers on the rear

and on the sides.

Shall be provided with Reflectors, Indicator and tail

lights

Two nos. of Tool boxes of each size 1500 mm

(Length) X 750 mm (Width) X 750 mm (Depth),

made of minimum 3.15mm thick MS sheet with

hinged lid and locking facility, to be provided

underneath the Trailer chassis and each tool box

shall be provided with Godrej make, 7 lever type,

Navtal Lock with three keys shall be provided.

Number board, Name Plate and stop board at rear.

SWL of the trailer shall be legibly painted at the

rear side

Spare wheel mounting (one number in quantity)

below the trailer platform

Greasing points for the trailer wherever required.

Minimum 5 nos. of Red colour reflex reflectors

should be provided on all three sides, except Trailer

front side, and Reflecting surface dia. 75mm (maximum). Red flag holder – 2 nos. at the rear side of the

trailer platform shall be provided.

Lifting type of Brass Earth Chain with 4 rows shall

be provided at rear of the trailer at both corners

such that the brass chain should touch the ground.

All fasteners shall be of Electro galvanized / Yellow

passivated coating Unbrako, TVS make only shall be

used (IS1367)


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4.0 WELDING REQUIREMENTS:

4.1 SS welding:

Welding of 100% butt welds of stainless steel 304 L (316L) plates,

pipelines to each other, valves, flanges and pipe unions (branch pipes) of

the tank, and lapping of 100% of branch pipes (pipe unions) to the tank

inner vessel shells and end plates shall be performed by tungsten-arc

welding (GTAW process, inert gas-argon) with argon purging along the

inner space for all types of welds and shielding from the weld root side.

4.2 CS welding (if selected for outer vessel):

For all carbon steel materials, Submerged Arc Welding (SAW) process

shall be followed . Wherever approach is not available for carrying out

SAW process second side gouging shall be carried out before welding.

Filler wires/electrodes shall be suitable to parent material composition.

5.0 RADIOGRAPHY REQUIREMENTS:

5.1 100% radiography on all butt welded joints for all plates, including

flange to pipeline and pipelines to each other shall be carried out in

accordance with normative documents in force in ASME code or

equivalent with documents approved by third party acceptance.

5.2 Those joints which are not subjected to radiography (x-ray) may be

tested by gamma-ray or ultrasonic methods after getting the approval

from the third party inspection agency /SDSC-SHAR.

5.3 Dye penetrant inspection should not be used for vacuum joints

qualification.

6.0 TESTING AND QUALIFICATION

6.1 Pneumatic Strength Test

Pneumatic test shall be carried out with GN2/dry air (dew point -55

Deg.C [min]) medium at a test pressure of 1.25 times the design

pressure. The same shall be carried out in presence of third party

inspection agency/ purchaser representative.

6.2 Helium Leak Check (Inner Vessel)

All weld joints on the inner vessel shall be qualified for Helium leaks

with a mass spectrometer for hermitivity/leak rates of 1 x 10 E -


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7standard cc/sec. Vacuum shall be created in the inner vessel to 1 X

10 E-3 torr and Helium chamber method is to be carried out.

6.3 Helium Leak Check (Inner & Outer Vessel)

All weld joints on the outer vessel shall be qualified for Helium leaks

with a mass spectrometer for a hermitivity/leak rates of 1 X 10 E-8

std. cc/sec. During the above, annular space shall be at vacuum level not

less than 1 X 10E-3 torr. The test shall be carried out on integrated

vessel.

6.4 Vacuum Retention Test:

Subsequent to the completion of Helium leak check of Outer and Inner

Vessel vacuum stabilisation shall be observed for a duration of 96 hours

during which time no evacuation shall be carried out. The raise in

pressure shall be monitored in this test.

6.5 Cold Shock Test on Inner Vessel Joints

All inner vessel weld joints shall be subjected to cold shock with LN2

medium at operating pressure of the vessel. On completion of cold

shock test and after warming up of the vessel, vacuum level in the

annular space shall be retained at not more than 1 x 10 E-3 Torr.

6.6 Measurement of Evaporation Loss & Heat-in-Leak

The tank shall be filled to 90% Level (minimum) and the loss due to

evaporation shall be measured. The pressure shall be near atmospheric.

Ambient temperature shall be 308 Deg. K during the course of above

testing. The percentage evaporation loss shall be less than the

specified value of 0.15% per day. The measurement of evaporation loss

shall be carried out in presence of third party inspection agency/

Purchaser representative.

6.7 Semi trailer related testing:

Load testing at supplier’s work site: The trailer shall be load tested for rated capacity and overload tested

for 125% of rated capacity at supplier’s works site. Necessary dead

weights and procedure for load testing / over load testing shall be

provided by the Supplier.


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Commissioning & assembly at suppliers work site:

Commissioning and assembly of actual equipment onto the trailer will be

carried out at suppliers work site. Based on the assembly of equipment,

minor modifications if any, shall be attended by the supplier with no extra cost.

7.0 IDENTIFICATION AND SEALING

7.1 Vessel should have a name plate permanently fixed to the vessel, with

brief specifications duly marked as per ASME Rules or equivalent

7.2 The inner vessel shall be sealed so that ambient moisture never enters

inside. The tanks are to be pressurised to 0.5 bar with dry Nitrogen

gas at - 55 Deg.C dew point.

7.3 The annular space shall be maintained at 1 x 10 E-3 Torr vacuum

pressure, sealed and delivered.

7.4 All the outlet ports in the valve cabinet and outside valve cabinet,

metallic dummies shall be provided. The dummies shall be made from

same materials as that of parent metal.

8.0 PROGRESS FOLLOWUP & INSPECTION:

8.1 The progress of work during the course of fabrication will be monitored

by purchaser.

8.2 Within 15 days of receipt of the order, the fabricator should prepare a

detailed PERT chart showing all milestone activities of fabrication,

testing, chemical cleaning etc., QAP formats and submit to the

purchaser for approval. The approved PERT / QAP formats shall be

modified only with concurrence of purchaser.

8.3 Thereafter the fabricator should furnish a monthly progress report

through FAX on 28th of each month to the purchaser.

8.4 Periodical status review meetings should be conducted at the premises

of either the purchaser or the fabricator as mutually agreed upon.

8.5 The vessel should be inspected and certified by Purchaser's

representative or third party inspection agency. Arranging third party

inspection agency and inspection at suppliers works shall be the

responsibility of supplier.


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8.6 The scope of inspection is as given below:

a) Approval of the design calculations (shell, design, saddle supports etc.) and fabrication drawings prepared by the supplier for each equipment

to ensure that the details are as required by the codes and standards

specified.

b) Inspection of plates at fabricators shop, cuts of plates and samples taken from each plate, witness of tests carried out. Each plate shall be

subjected to chemical, mechanical, IGC, Cold impact test & UT tests

irrespective of availability of Mill Test Certificates.

c) Welding procedure qualification and welders performance qualification tests as per ASME Code regulations or equivalent.

d) Marking of the shell plates and dished end plates. e) Long seam-fit up inspection of tack welds. f) Back grinding of seam welds, inspection of welds. g) Circularity of shells after rolling. h) Evaluation of radiography films of all Butt welds. i) Forming of dished ends, stress relieving and radiography of welds. j) Cir seam fit up. k) Back chip of cir seam welds. l) Marking of nozzle orientation. m) Nozzle fit up. n) Saddle and saddle support fit up. o) Dye penetrant test on all fillet welds. p) Pneumatic strength test at test pressure. q) All tests as specified in section 6 r) Dimensional check and verification of Test certificates related to Standard bought out components as per P&I scheme.

s) Chemical cleaning and drying. t) Filling with dry Nitrogen at 0.5 bar and vacuum checks before final despatch.

u) Stamping of the vessel and issue of certificate.

9.0 SUBMISSION OF DRAWINGS AND DOCUMENTATION:

The supplier shall carry out Thermal and mechanical design of the vessel in

consultation with the purchaser. Upon finalizing the design and analysis, the


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Supplier shall prepare detailed data sheets and fabrication drawings and

submit three sets to purchaser within two months of P.O. release.

9.1 Documentation to be supplied for approval prior to manufacture.

a) P&I diagram of the vessel and specification of flow components b) Design analysis for vessel c) Fabrication and assembly drawings with bill of material d) Inspection and test procedures along with Quality Assurance Plan. e) Norms of evaluation of weld joints quality f) Pressure drop calculations for PBU. A chart with PBU performance at different tank ullage pressure /level conditions shall be provided.

g) Calculations of the safety valves flow capacities and their sizing h) Specification data sheets for all bought out items. i) Overall heat transfer calculation of the vessel considering all heat transfer modes with the proposed MLI shall be furnished. The chill

down mass with LN2 shall be indicated.

j) Operation & maintenance manual. k) For obtaining Statutory clearance from PESO, Nagpur/India, the supplier shall submit three copies, of following documents in Original

before three months of tank despatch.

• All Design drawings as approved by Third Party Inspection Agency. • Design calculations of the Vessel as per ASME code or equivalent regulations approved by Third Party Inspection Agency. Wherever

other codes are employed, design calculations as per ASME

Sec.VIII,Div.1. also shall be furnished duly approved by TPI.

• Safety relief device calculations of inner vessel, LIN vessel, Outer vessel and LIN shield.

l) Trailer documents to be submitted after placing the purchase order

The supplier shall submit following documents after placing purchase order.

a) Detailed General Assembly drawing with sectional views of structures.

b) Detailed design details of the trailer including load reaction calculations, adequacy of twist locks capacity, loads & stresses on

axles etc., for review and approval.

c) Detailed design calculations for stability ratio less than 0.9. d) Technical specifications / technical leaflets of the components,

bought out items and other sub assemblies.


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The trailer design shall be approved/cleared by the purchaser before

taking up fabrication by the supplier.

m) Documents to be submitted after design approval and prior to fabrication

The supplier shall submit the following documents after design approval

and prior to fabrication.

a) Quality Assurance Plan (QAP) to ensure quality of raw materials, bought out items

b) Weld details towards trailer chassis fabrication. c) Detailed trailer General Assembly drawings (With a soft copy of

AutoCad-2000 version)

d) Brake system layout scheme indicating brake lining size and brake chamber sizes etc.,

e) Bill of materials. f) Test certificates issued by the manufacturer for all the

components (for example SAE 3.5 Inch- King pin), bought out

items and other sub assemblies.

9.2 Documentation during dispatch of tank:

Three copies of master files and test certificates/documents shall be

supplied by the fabricator along with the tank. Master file should contain

the following:

a) Purchaser order copy and amendments, if any

b) Inspection Release note by TPI

c) Approved Design and Fabrication drawings as stamped by PESO-

Nagpur , India or equivalent.

d) As built drawings of the vessel

e) Approved design documents for inner/outer vessel considering

wind, vibration & seismic conditions. The CAD model and FE analysis

are also to be included.

f) Approved design calculations for safety relief valve sizing

g) Design and analysis reports.

h) P&I diagram and layout drawing of tank.

i) Bill of materials

j) Material test certificate of plates, pipes, fittings, components etc


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k) Radiography Reports and films of vessel shall be supplied to

purchaser.

l) Test reports as defined in scope of inspection Article 8.0

m) Test certificates of all standard items as per legend for P&I diag.

n) All radiography films with reports

o) Material Test Certificate of trailer structure elements /

equipments shall be provided along with supply as per the standards

p) All the above reports/test results shall be bound neatly.

q) All the required documentation as per Central Motor Vehicle Rules

(CMVR) for the registration of the trailer in Andhra Pradesh need

to be submitted by the supplier.

r) Trailer Maintenance manual – 2 sets. The manual should also be

supplied in CD form.

10. SPARES:

a) The spares required for the commissioning of the tank are in the scope of the supplier.

b) The party shall supply one set of spares for the pump along with supply. c) Items to be supplied along with the trailer:

� Self-closing type palm coupling-2 sets for both trailer & hauler part. � Wheel Nut spanner and long lever – 2 Nos. � Wheel Hub nut spanner with lever – 2 Nos. � Hub Puller- 1 Nos. � Wheel bearings– 2 sets � Wheel hub oil seals set – 6 sets � Spare wheel mounted with tyre and tube – 1 No. � Brake hoses set (10 m length) – 02 sets. � Maintenance manual book– 2 sets along with CD form.

11. GENERAL CONDITIONS:

11.1 The indent shall be processed as two part bid. The parties shall submit

their bids in two parts i.e. part1) Technical bid & part 2) commercial /

price bid.

11.2 The parties should give their compliance point wise for all

specifications (Technical & commercial) while submitting their offer.

Deviations/ Assumptions if any are to be clearly indicated in the offer.


of 21

11.3 Mode of despatch of the Vessel shall be by Road/ Rail. The offer shall

be based on receipt of the tank & associated goods at SDSC SHAR

centre, Sriharikota

11.4 Suppliers shall furnish the price with following individual break-up.

a) Lump sum price for Design, Supply, Fabrication, Engineering and testing. b) Charges towards third party inspection agency c) Transportation charges

11.5 Incase of Indian suppliers having tie up with foreign party for tanker

supply, the transportation charges upto SDSC SHAR including sea/

inland transportation and customs handling at the country of shipment

origin, shall be borne by the Indian origin supplier only.

11.6 Also, Indian suppliers having tie up with foreign party shall note that

the semi trailer shall meet the requirements as per Central Motor

Vehicle Rules (CMVR) for the registration in Andhra Pradesh.

11.7 The manufacturers for the flow components and instrumentation

elements listed in P & I shall be followed strictly wherever specified. If

any new vendor is proposed by the supplier the same shall be approved

by Purchaser.

11.8 The procurement specifications for the bought out standard

components listed in P & I shall be submitted along with design

documents and the same will be approved by Purchaser. The flow

components like EP valves, manual valves, check valves etc., shall be of

the make mentioned in P&I diagaram. Any deviation from the above shall

be approved by Purchaser/ Department on specific basis and shall be

submitted at quotation stage.

11.9 The place of manufacturing/works of vessels shall be clearly indicated

in the offer.

11.10 The overall delivery time shall be within 10 months from release/award of Purchase Order by Department.

11.11 The NER test with LN2 shall be carried out at party’s premises with the participation of supplier. The consumables including LN2 required

for test are to be arranged by the supplier.

11.12 The vessel shall be guaranteed for a period of 12 months from the date of commissioning.

11.13 The trailer shall be guaranteed for 12 months from the date of commissioning at SDSC SHAR. The supplier has to replace the

defective materials at free of cost during guarantee period at

purchaser’s premises.


of 21

IMPORTANT:

• The parties shall submit their compliance for the technical

specifications while submitting the technical offer as per enclosed

Format-1

• The parties shall submit their commercial offer as per enclosed

Format-2

• The parties shall answer the questionnaire on their plant/factory

details as per enclosed Format-3

SA

TIS

H D

HA

WA

N S

PA

CE

CE

NTR

ED

AT

EN

AM

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19.11.2015

19.11.2015

CH

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ED

AP

PR

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ED

DR

AW

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TS

RA

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U R

AM

RA

MA

RA

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SC

ALE

UN

ITSD

RG

. NO

NT

SLS

SF

30KL-LN

2-TA

NK

-01

3O K

L LN2 M

OB

ILE T

AN

KE

R S

CH

EM

AT

IC

SR

IHA

RIK

OTA

TIT

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LSS

F-C

PS

FLOW COMPONENTS & MAKE

TAG NO. DESCRIPTION SIZE REMARKS PREFARABLE MAKE

TP CENTRIGUGAL PUMP CRYOMEC

TC1 VACCUM MEASURING GUAGE PIRANI/ATM-

5*10 -4 TORR

ALCATEL,EDWARDS

W2 VACCUM VALVE 25NB BELLOW SEALED VAT

W1 VACCUM VALVE 40NB BELLOW SEALED VAT

V02-V07 GUAGE ISOLATION VALVES 10NB NEEDLE VALVE THOMPSON

V01,V08 3 WAY VALVE FOR PRESSURE

GUAGE

10NB NEEDLE VALVE THOMPSON

RD3 BURST DISCS FOR OUTER

VESSEL

TBD - BS&B

RD1 &RD2 BURST DISCS FOR INNER

VESSEL

TBD - BS&B

VSF7 SAFETY VALVE IN F/D LINE 25/40 SET PR. 11 BAR(G) TYCO SANMAR

VSF6 SAFETY VALVE IN FILL/

DELIVERY

25/40 SET PR. 13.2 BAR(G) TYCO SANMAR

VSF5 SAFETY VALVE IN PUMP

DELIVERY

25/40 SET PR. 13.2 BAR(G) TYCO SANMAR

VSF4 SAFETY VALVE IN PUMP

SUCTION

25/40 SET PR. 11 BAR(G) TYCO SANMAR

VSF3 PBU COIL SAFETY VALVES 25/40 SET PR. 11 BAR(G) TYCO SANMAR

VSF1&

VSF2

INNER TANK SAFETY VALVES TBD SET PR. 11 BAR(G) TYCO SANMAR

VC3 CHECK VALVE IN PUMP

DELIVERY

TBD CRACK PR.0.15-0.2

BAR(G)

SA IRELAND

VC2 CHECK VALVE FOR PBU

LOCKED UP RELEASE

15NB CRACK PR.0.15-0.2

BAR(G)

SA IRELAND

VC1 CHECK VALVE FOR VENT LINE 65NB CRACK PR.0.15-0.2

BAR(G)

SA IRELAND

VR2 BACK PRESSURE REGULATOR 25NB SET PR. 0.3 BAR(G))

RANGE 0-3 BAR(G)

CASHACME OR

EQUIVALENT

VR1 PR.BUILD UP REGULATOR TBD SET PR. 3 BAR(G)

RANGE 0-3 BAR(G)

CASHACME OR

EQUIVALENT

FL1 PUMP SUCTION FILTER 80/65NB INLINE FILTER

VM12 TANK SAMPLING ISOLATION

VALVE

10NB ES,BS GLOBEVALVE

VM11 LIQ.DRAIN VALVE IN PUMP

DELIVERY LINE


VM10 LIQ.DELIVERY VALVE IN

PUMP OUTLET LINE

40/50NB ES,BS GLOBEVALVE

VM9 LIQ.DRAIN VALVE IN PUMP

SUCTION LINE


VM8 VENT VALVE 50 NB ES & BS GLOBE

VALVE

VELAN, SA IRELAND,

CPC,CRYOGENMASH

VM7 ISOLATION VALVE FOR VR2 25NB ES & BS GLOBE

VALVE

VM6 FLOW DIVERTER VALVE 65NB EXTENDED STEM 3

WAY VALVE

VM5 PRESSURISATION COIL

OUTLET VALVE


VM4 PRESSURISATIONCOIL

INLET VALVE

25NB/40

NB

ES,BS GLOBEVALVE

VM3 VENT VALVE 65NB ES & BS GLOBE

VALVE

VM2 LIQ. FILL/DRAIN VALVE 50NB ES,BS GLOBEVALVE

-

VM1 SUCTION INLET VALVE TO

PUMP


• All valves including check valves, filter & regulator shall be 16PN rating

1

Format 1 :

Questionnaire for Compliance of technical specifications to be submitted by party

1.0 Technical Specifications:

1.1 Type Horizontal double wall Tank, cylindrical configuration mounted on semi trailer

and with integral valve unit. (Hauler is in purchaser scope)

1.2 Volume 30 KL

1.3 Medium Liquid Nitrogen (LN2)

1.4 Quantity 1 No.

1.5 Ullage Volume 5%

1.6 Cleanliness Oxygen clean standard

1.7 Evaporation loss when

LN2 is filled to 90%

capacity

Percentage of evaporation less than 0.20% per day(at ambient temperature

of 300K and tank at atmospheric pressure)

Inner Vessel

1.8 Design Code ASME Sec.VIII,Div.1.

Wherever other codes are employed, design calculations as per ASME


1.9 Operating pressure

/MAWP

10 Bar (g) and shall with stand vacuum to a level of 1 X 10E-3 torr

1.10 Design pressure

kg/cm2

(1.25 x MAWP + vac+ Static Head)

1.11 Design Temperature 77K to 423K

1.12 ND Test 100% Radiography for all butt weld joints

1.13 Shell Material: Stainless Steel SA 240 Grade SS 304L/316L as per ASTM or equivalent.

2

Plates which are selected for the fabrication shall be of 100% UT tested for

detecting defects like laminations and surface/ internal cavities etc., prior to

its use.

Cold/Hot stretch formed materials are not allowed.

1.14 Heat treatment Solution annealing to be done .

Cold impact strength tests shall be carried out on all materials subjected to

LIN medium.

Outer Vessel

1.15 Design code ASME Sec.VIII,Div.1

Wherever other codes are employed, design calculations as per ASME


1.16 Operating pressure 1.0 Bar (g) & vacuum of 1 X 10-3 torr

1.17 Design temperature 253K to 343K

1.18 Radiography /UT 25% for all butt joints

1.19 Shell Material &

corrosion allowance

over and above the

design thickness

Carbon Steel SA516 Gr 70 or equivalent with 3mm corrosion allowance

Cold/Hot stretch formed materials not allowed.

1.20 Insulation & Vacuum

for tanks

• Multi layer insulation of Aluminum Mylar with glass fibre spacer paper are

similar.

• Other insulations such as perlite not allowed.

• Level of vacuum shall be 1 X 10-3 mm Hg.

• The selection of materials and quantity of adsorbents shall be in such way

that no restoration/regeneration of the absorbent is necessary for a

duration of 5 years.

3

1.21 Piping circuit All the piping circuits (pipes, valves,check valves, filters including PBU ) shall

be designed for 10 Bar (g) operating pressure. The valves used for cryogenic

service shall be of bellow sealed construction.

Preferred make: SA Ireland/Velan/ CPC

Cryolab/cryogenmash/RDIME.

1.22 Protection of Material All the materials shall be degreased before chemical passivation. The inner

and outer vessel shall be chemically pickled and passivated.

All exposed support materials shall be shot blasted and painted(Primer coat

of 125-150 micron DFT and finish coat of 50-60 micron DFT).

1.23 Thermal Treatment of

Materials

For all pressed/formed items like dished ends, solution treatment shall be

carried out.

1.24 Operation life More than 20 Years

4

1.25 Semi trailer related:

Capacity

Payload carrying capacity shall be to meet the tanker with 100% load and

following combined load combinations.



Vertical acceleration 1.5 g up and 2 g down (including self weight)

1.26 Operating Speed 60kmph Under No Load and 40 kmph – with full load

1.26 Operating environment Operating Temp 10 deg. C to 50 deg. C Relative Humidity - 95%

1.27 Prime mover to be

used by user

1. Ashok Leyland Hippo Hauler Model: 1/13 of Wheel Base 3810mm, King pin

Off set – 381 mm

2. Ashok Leyland Hippo Hauler Model: 1/4 of Wheel Base 3810mm, King pin

Off set – 381 mm

3. VOLVO Make FM 400 model heavy duty hauler of Wheel Base 3885 mm,

King pin Off set – 385 mm

4. VOLVO Make FH 520 model heavy duty hauler of Wheel Base 3885 mm,

King pin Off set – 385 mm

5. AMW make 4923-3850 WB 6 X4 TRACTOR of 375 mm king pin Offset.

6. TATA make Prima LX 4923.S model, heavy duty hauler of 3890 mm

Wheel Base & 385 mm king pin Offset.

(Hauler is in purchaser scope)

�

2.0 Piping and

instrumentation

scheme

The Piping and Instrumentation scheme shall be as per enclosed P&I diagram

5

3.0 Design Requirements

3.1 The LN2 tank shall be designed and fabricated in accordance with ASME

Sec-VIII Div-1 or equivalent. Wherever other codes are employed, design

calculations as per ASME Sec.VIII,Div.1. also shall be furnished duly

approved by TPI.

3.2 The acceleration loads during transportation of 100% filled vessel shall be

for following combined load combinations & shall satisfy SMPV rules



Vertical acceleration 1.5g up & 2 g down (including self weight)

3.3 Speed of the tank during transportation shall be taken as 40 KMPH with

product mass. Tank shall be treated as mobile tank.

6

a) 3.4 Design

requirements of semi

trailer:

Capacity

Payload carrying capacity shall be to meet the tanker with 100% load and

following combined load combinations



Vertical acceleration 1.5 g up and 2 g down (including self weight)

b) Operating Speed 60kmph under No Load and 40 kmph with full Load

c) Operating environment Operating Temp 10 deg. C to 50 deg. C & RH - 95%

d) Prime mover to be

used by user

Ashok Leyland Hippo Hauler Model: 1/13, Wheel Base 3810mm, King pin Off

set – 381 mm

Ashok Leyland Hippo Hauler Model: 1/4, Wheel Base 3810mm, King pin Off

set – 381 mm

VOLVO Make FM 400 model 49t GTW hauler of Wheel Base 3885 mm, King

pin Off set – 381 mm

e) Design considerations Based on the overall dimensions of tanker, supplier need to check for

Stability ratio which need to be less than 0.9 as per the current road safety

norms for hazardous goods transportation prescribed by agencies like PESO,

Nagpur. Design calculations for stability ratio less than 0.9 need to be

submitted .

The Overall length of the tractor trailer combination, Overall height (from

ground to top of the CONTAINER), Axle loads shall be within the

permissible limits of CMVR Rules 1989 & IS 8037 and relevant Automotive

Industry Standards (AIS).

7

Longitudinal Angle of inclination of Semi trailer in relation to the Prime-

mover shall be considered as maximum 60 towards front & maximum 70

towards rear & Lateral angle of inclination of Semi trailer shall be considered

as 30 on sideways (either sides).

Free space between the Prime-mover and trailer shall be maintained as per

the IS 8007-2004.

8

f) Rubbing Plate The Trailer Rubbing plate shall be so constructed that the area shall be

capable to take the Reaction load imposing on the King pin.

Minimum area of the rubbing plate shall be 1200 mm X 1200 mm.

Rubbing plate height from the ground shall be 1400mm + 25 & -- 0 mm shall

be maintained (Refer Fig no: 2)

The clear space between the Prime mover cabin rear to the front edge of the

trailer platform shall be a minimum of 1450 mm. (Refer drawing no: 2), such

that 900 turn can be taken up by the Prime mover without trailer obstruction.

Distance between the center of the Kingpin to the front edge of the

protruding component underneath the chassis, shall be minimum 2400 mm

(Refer Fig no: 2).

Gooseneck platform projection from King pin centre line shall be in between

750 mm & 900 mm (Refer Fig no: 2).

Gooseneck shall be designed to carry uniformly distributed load of minimum

2000 kg.

g) King Pin Details 3.5 Inch King pin of reputed make preferably JOST, YORK, GF, BPW, SAF

HOLLAND

Conforming to IS 6763 Part 2 or Equivalent or Higher

King pin D-Value shall be mentioned in the Design report.

Manufacturer’s Test Certificate shall be provided along with supply as per

standards.

h) Axles Minimum 2 nos. of Standard axle of adequate capacity shall be provided.

The axle shall be standard make and shall be procured from reputed

manufacturers like TATA / Automotive Axles / FUWA / BPW / TEMKA / YORK or Axles India Ltd., and make shall be mentioned in the offer.

Number of axles, axle spacing and axle loading shall be conforming to Central

9

Motor Vehicle Rules (CMVR) - 1989

The hubs and brake drums shall be separate for attending to brake repairs

easily without removal of hub.

Axle bearings used shall be of following reputed makes only. SKF, FAG, TATA

TIMKEN.

Inner wheels shall be accessible easily for attending to maintenance, tyres

changing works and easy air filling.

Suitable provision shall be given in the hub for removal and replacing of

bearing cones easily from the hub.

The axle shall be tested with ultrasonic tests as per ASTM/ANSI/388-78

Standard, for any internal defects before fitting to the trailer.

10

i) Suspension

The Trailer suspension system shall be provided with sufficient capacity

Semi-Elliptical laminated leaf springs of reputed makes such as Lamina /

Canara / Jona Woods, YORK etc

Semi-elliptical leaf springs shall conform to IS : 1135-1973

The suspension shall consist of rigid trailing arm axle adapters, shock

absorbers and air spring pistons.

j) Brake system without

fail-safe brake

The trailer shall be provided with twin line (Service and Emergency line) air

brake system coupled to hauler brake through ISO palm couplings and

actuated from hauler (preferably of M/s TVS / WABCO make)

All axles shall be fitted with service brakes & Fail safe brake systems.

Pneumatically operated parking brake at rear wheels with control mechanism

underneath the trailer platform.

All brake actuation system shall be provided with slack adjuster for

adjusting brake shoes.

The trailer shall be fitted with an air reservoir having capacity to give a

minimum of four full brake applications with pressure drop from cut-out to

0.7 times the cut-in pressure.

Brakes on each axle shall be capable of producing peak retarding force equal

to 0.45 times the rated load on the axle.

The trailer air reservoirs shall be provided with Auto drain valve.

Brake parts, regulator valves shall be TVS Sundaram Clayton/WABCO make.

Trailer shall be fitted with an Emergency Brake Relay Valve which

automatically applies trailer brakes in case accidental de-coupling of fifth

wheel coupler.

Brake system hoses shall be routed properly without hanging freely.

11

k) Wheels & Tyres Std. Ring type wheel drums of Wheels India or reputed make shall only be

used.

Heavy-duty Tubeless tyres of suitable size and ply rating to withstand

highway operation shall be provided.

Axle shall be provided with Dual tyres on each side.

The tyres shall be of reputed manufacturers, MRF / APOLLO / CEAT /

BIRLA / TVS / EMRALD / CONTINENTAL / MICHELIN / GOODYEAR

/BRIDGESTONE, and available freely in the market.

Long inflation necks or adopters shall be provided for inflation of inner

wheels and for checking tyre inflation pressure.

One number of Stepney tyre assembly shall be provided which shall be

mounted underneath the trailer platform with suitable mountings &

mechanisms.

l) Landing legs , 2 speed

worm gear type

The trailer shall be provided with two sets of suitable capacity Two speed

Landing Gears, one at front and the other at rear, either one of the

Manufactures namely, JOST/ YORK / FUWA / SAF Holland.

The Landing gears shall take minimum 1.25 time the static load of the rated

payload and self weight of the trailer.

Lifting capacity : minimum 20t (20000 kg)

Static capacity : minimum 40t (40,000 kg)

m) Electrical system All accessories shall function on 24 Volt DC supply from Prime-mover SLI

Batteries.

12

Shall be provided with SAE J 560 / IS 13491-2005 / ISO 1185, 7 pole

connector of type 24N with 7 core cables, for connecting Trailers electrical

system to Prime mover.

Wiring shall be covered in a safety conduit and properly terminated so that

no exposed loose wires are visible.

The trailer shall be provided with combination type tail lamp fittings

consisting of Parking lamps, Brake lamps, Side indicators and number board

lights.

Trailer sides shall be provided with Red light fittings with separate switch

control.

All electrical wiring materials preferably of Finolex make or equivalent

reputed manufacturers and routed through GI heavy duty piping with double

pole wiring.

All electrical wiring shall be underneath the chassis with minimum bends and

with NO JOINTS.

All light fittings shall be of LUCAS TVS, LUMAX or LUMAN make and

weather proof construction.

Male and Female sockets shall be provided with sufficient length of cables to

connect with the hauler supply point.

Electrical cable termination points shall be with as tight protection.

13

n) Other Fittings

Side Under run Protection Device (SUPD) shall be provided as per IS 14812

Rear Under run Protection Device (RUPD) shall be provided as per IS 14682

Shall be provided with SAE J 560, 7 pin connector with 7 core cable from

trailer to prime mover.

Reflex reflectors of sufficient numbers on the rear and on the sides.

Shall be provided with Reflectors, Indicator and tail lights

Two nos. of Tool boxes of each size 1500 mm (Length) X 750 mm (Width) X

750 mm (Depth), made of minimum 3.15mm thick MS sheet with hinged lid

and locking facility, to be provided underneath the Trailer chassis and each

tool box shall be provided with Godrej make, 7 lever type, Navtal Lock with

three keys shall be provided.

Number board, Name Plate and stop board at rear.

SWL of the trailer shall be legibly painted at the rear side

Spare wheel mounting (one number in quantity) below the trailer platform

Greasing points for the trailer wherever required.

Minimum 5 nos. of Red colour reflex reflectors should be provided on all

three sides, except Trailer front side, and Reflecting surface dia. 75mm (maximum). Red flag holder – 2 nos. at the rear side of the trailer platform shall be

provided.

Lifting type of Brass Earth Chain with 4 rows shall be provided at rear of

trailer at both corners such that the brass chain should touch the ground.

All fasteners shall be of Electro galvanized / Yellow passivated coating

Unbrako, TVS make only shall be used (IS1367)

14

4.0 WELDING

REQUIREMENTS

4.1 SS welding:

Welding of 100% butt welds of stainless steel 304 L (316L) plates, pipelines

to each other, valves, flanges and pipe unions (branch pipes) of the tank, and

lapping of 100% of branch pipes (pipe unions) to the tank inner vessel shells

and end plates shall be performed by tungsten-arc welding (GTAW process,

inert gas-argon) with argon purging along the inner space for all types of

welds and shielding from the weld root side.

4.2 CS welding (if selected for outer vessel):

For all carbon steel materials, Submerged Arc Welding (SAW) process shall

be followed . Wherever approach is not available for carrying out SAW

process second side gouging shall be carried out before welding. Filler

wires/electrodes shall be suitable to parent material composition.

5 RADIOGRAPHY

REQUIREMENTS

5.1 100% radiography on all butt welded joints for all plates, including flange to

pipeline and pipelines to each other shall be carried out in accordance with

normative documents in force in ASME code or equivalent with documents

approved by third party acceptance.

5.2 Those joints which are not subjected to radiography (x-ray) may be tested

by gamma-ray or ultrasonic methods after getting the approval from the

third party inspection agency /SDSC-SHAR.

5.3 Dye penetrant inspection should not be used for vacuum joints qualification.

15

6 TESTING AND

QUALIFICATION

6.1 Pneumatic Strength

Test

Pneumatic test shall be carried out with GN2/dry air (dew point -55 Deg.C

[min]) medium at a test pressure of 1.25 times the design pressure. The

same shall be carried out in presence of third party inspection agency/

purchaser representative.

6.2 Helium Leak Check

(Inner Vessel)

All weld joints on the inner vessel shall be qualified for Helium leaks with a

mass spectrometer for hermitivity/leak rates of 1 x 10 E -7standard cc/sec.

Vacuum shall be created in the inner vessel to 1 X 10 E-3 torr and Helium

chamber method is to be carried out

6.3 Helium Leak Check

(Inner & Outer

Vessel)

All weld joints on the outer vessel shall be qualified for Helium leaks with a

mass spectrometer for a hermitivity/leak rates of 1 X 10 E-8 std. cc/sec.

During the above, annular space shall be at vacuum level not less than 1 X

10E-3 torr. The test shall be carried out on integrated vessel.

6.4 Vacuum Retention

Test

Subsequent to the completion of Helium leak check of Outer and Inner

Vessel vacuum stabilisation shall be observed for a duration of 96 hours

during which time no evacuation shall be carried out. The raise in pressure

shall be monitored in this test.

6.5 Cold Shock Test on

Inner Vessel Joints

All inner vessel weld joints shall be subjected to cold shock with LN2 medium

at operating pressure of the vessel. On completion of cold shock test and

after warming up of the vessel, vacuum level in the annular space shall be

retained at not more than 1 x 10 E-3 Torr.

6.6 Measurement of

Evaporation Loss &

The tank shall be filled to 90% Level (minimum) and the loss due to

evaporation shall be measured. The pressure shall be near atmospheric.

16

Heat-in-Leak Ambient temperature shall be 308 Deg. K during the course of above testing.

The percentage evaporation loss shall be less than the specified value of

0.15% per day. The measurement of evaporation loss shall be carried out in

presence of third party inspection agency/ Purchaser representative.

6.7 Semi trailer related

testing:

Load testing at supplier’s work site: The trailer shall be load tested for rated capacity and overload tested for

125% of rated capacity at supplier’s works site. Necessary dead weights and

procedure for load testing / over load testing shall be provided by the

Supplier. Commissioning & assembly at suppliers work site:

Commissioning and assembly of actual equipment onto the trailer will be

carried out at suppliers work site. Based on the assembly of equipment,

minor modifications if any, shall be attended by the supplier with no extra cost.

7.0 Identification And

Sealing

7.1 Vessel should have a name plate permanently fixed to the vessel, with brief

specifications duly marked as per ASME Rules or equivalent

7.2 The inner vessel shall be sealed so that ambient moisture never enters inside.

The tanks are to be pressurised to 0.5 bar with dry Nitrogen gas at - 55

Deg.C dew point

17

7.3 The annular space shall be maintained at 1 x 10 E-3 Torr vacuum pressure,

sealed and delivered.

7.4 All the outlet ports in the valve cabinet and outside valve cabinet, metallic

dummies shall be provided. The dummies shall be made from same materials

as that of parent metal.

8.0 Progress Followup &

Inspection:

As per specifications

9.0 Submission Of

Drawings And

Documentation:

As per specifications

10.0 Spares As per specifications

11.0 General Conditions

11.1 The indent shall be processed as two part bid. The parties shall submit their

bids in two parts i.e. part1) Technical bid & part 2) commercial / price bid.

11.2 The parties should give their compliance point wise for all specifications

(Technical & commercial) while submitting their offer. Deviations/

Assumptions if any are to be clearly indicated in the offer.

11.3 Mode of despatch of the Vessel shall be by Road/ Rail. The offer shall be

based on receipt of the tank & associated goods at SDSC SHAR centre,

Sriharikota

11.4 Suppliers shall furnish the price with following individual break-up.

• Lump sum price for Design, Supply, Fabrication, Engineering and

18

testing.

• Charges towards third party inspection agency

• Transportation charges

11.5 Incase of Indian suppliers having tie up with foreign party for tanker supply,

the transportation charges upto SDSC SHAR including sea/ inland

transportation and customs handling at the country of shipment origin, shall

be borne by the Indian origin supplier only.

11.6 Also, Indian suppliers having tie up with foreign party shall note that the

semi trailer shall meet the requirements as per Central Motor Vehicle Rules

(CMVR) for the registration in Andhra Pradesh.

11.7 The manufacturers for the flow components and instrumentation elements

listed in P & I shall be followed strictly wherever specified. If any new

vendor is proposed by the supplier the same shall be approved by Purchaser.

11.8 The procurement specifications for the bought out standard components

listed in P & I shall be submitted along with design documents and the same

will be approved by Purchaser. The flow components like EP valves, manual

valves, check valves etc., shall be of the make mentioned in P&I diagaram.

Any deviation from the above shall be approved by Purchaser/ Department on

specific basis and shall be submitted at quotation stage.

11.9 The place of manufacturing/works of vessels shall be clearly indicated in the

offer.

19

11.10 The overall delivery time shall be within 10 months from release/award of

Purchase Order by Department.

11.11 The NER test with LN2 shall be carried out at party’s premises with the

participation of supplier. The consumables including LN2 required for test

are to be arranged by the supplier.

11.12 The vessel shall be guaranteed for a period of 12 months from the date of

commissioning.

11.13 The trailer shall be guaranteed for 12 months from the date of

commissioning at SDSC SHAR. The supplier has to replace the defective

materials at free of cost during guarantee period at purchaser’s premises.

Format-2

Format for commercial offer

1 Lump sum price for Design, Supply, Fabrication,

Engineering and testing.

2 Charges towards third party inspection agency

3 Transportation charges

Format-3

QUESTIONNAIRE TO BE FILLED BY THE PARTIES:

1. Plant Equipment with Year of installation &

make(copies to be submitted)

2. Details of previous orders executed for

similar tanks (copies to be submitted)

3. Pictures of earlier manufactured mobile

tankers to be submitted

4. Welding procedures followed to be

submitted

5. Availability of inspection equipment

6. QAP plan followed for similar orders

7. Record of cold shock tests conducted on

manufactured tanks at factory

8. Record of Man power resources for

execution of work

9. Annual turnover last 3 yrs

10. Profit after tax - 3 yrs

11. Safety record for last 5 yrs