SUPPLY OF 30 CU.M LIQUID NITROGEN MOBILE TANK … · 30 Cu.M Liquid Nitrogen Mobile Tank...
Transcript of 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
Longitudinal acceleration 2 g
Transverse acceleration 2 g
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
Longitudinal acceleration 2 g
Transverse acceleration 2 g
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.
30 Cu.M Liquid Nitrogen Mobile Tank specifications
Page 20 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.
30 Cu.M Liquid Nitrogen Mobile Tank specifications
Page 21 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
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19.11.2015
19.11.2015
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SF
30KL-LN
2-TA
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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
15NB ES,BS GLOBEVALVE
VM10 LIQ.DELIVERY VALVE IN
PUMP OUTLET LINE
40/50NB ES,BS GLOBEVALVE
VM9 LIQ.DRAIN VALVE IN PUMP
SUCTION LINE
15NB ES,BS GLOBEVALVE
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
50NB ES,BS GLOBEVALVE
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
80NB ES,BS GLOBEVALVE
• 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
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.
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
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.
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.
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
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
Longitudinal acceleration 2 g
Transverse acceleration 2 g
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
Longitudinal acceleration 2 g
Transverse acceleration 2 g
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