Client: Lithium Nevada Corporation Project: Thacker Pass

Standard
Specification Revision
Waste Heat Boiler with Steam Drum No Date Page
Specification No.
PB 2020.01.17 1
00257650‐0000‐45ES‐0034
CLIENT: LITHIUM NEVADA CORPORATION
PROJECT: THACKER PASS

SIGNATURE DATE

PREPARED BY: D. Lyon

REVIEWED BY: Y. Zhou

APPROVED BY: T. Van Daele

ISSUE/REVISION HISTORY
Issue Revision
Revision Details
Code No. By Rev’d. App. Date
RR PA DL YZ TVD 2020.01.03 Released for Review
RR PB DL YZ TVD 2020.01.17 Released for Information

Issue Codes: RC = Released for Construction, RD = Released for Design, RF = Released for Fabrication, RI = Released for Information, RP = Released
for Purchase, RQ = Released for Quotation, RR = Released for Review and Comments.
This Specification is the property of EXP U.S. Services Inc. (EXP). Information and know‐how herein are
confidential and may not be used, reproduced, or revealed to others except in accordance with contract or
other written permission of EXP.

00257650‐1000‐45ES‐0034_rev PB ‐ WHB with Steam Drum.docx Page 1 of 16
Standard Specification Revision
Specification No.
PB 2020.01.17 2
00257650‐0000‐45ES‐0034
TABLE OF CONTENTS

1 INTRODUCTION .......................................................................................................................... 3
2 RELEVANT CODES AND STANDARDS ........................................................................................... 3
2.1 Codes, Standards and Regulations.......................................................................................... 3
2.2 Language and Measurement System ..................................................................................... 3
3 OPERATING ENVIRONMENT ........................................................................................................ 4
4 DESIGN CRITERIA ........................................................................................................................ 4
4.1 Process Description .............................................................................................................. 4
4.2 Operating Philosophy ........................................................................................................... 4
4.3 Performance Characteristics ................................................................................................ 4
4.4 Design Life ............................................................................................................................... 4
4.5 Heat Surface Area ................................................................................................................... 4
4.6 Preferred Equipment ............................................................................................................... 5
4.7 Other ....................................................................................................................................... 5
5 TECHNICAL REQUIREMENTS .......................................................................................................... 5
5.1 Materials of Construction ....................................................................................................... 5
5.2 Mechanical .............................................................................................................................. 6
5.3 Structural .............................................................................................................................. 13
5.4 Electrical ................................................................................................................................ 13
5.5 Instrumentation and Control System .................................................................................... 13
5.6 Equipment Identification, Marking and Labeling ................................................................. 15
6 QUALITY ASSURANCE (QA) ......................................................................................................... 15
6.1 QA Requirements .................................................................................................................. 15
6.2 Inspection and Testing .......................................................................................................... 15

Specification No.
PB 2020.01.17 3
00257650‐0000‐45ES‐0034
1 Introduction
This specification describes the technical requirements for a Waste Heat Boiler and ancillary
equipment for Lithium Nevada Corporation, Thacker Pass Sulfuric Acid Plant.
2 Relevant Codes and Standards
2.1 Codes, Standards and Regulations
Perform the work in accordance with the relevant codes and standards from the regulatory
agencies and institutes listed below. The latest issue of an individual code, standard or regulation
at the time of contract signing governs.
ABMA ABMA American Boiler Manufacturers Association.
ANSI American National Standards Institute, Pipes, Flanges, Fittings and Valves
ASME Boiler and Pressure Vessel Code, Section I, "Power Boilers."
ASME Boiler and Pressure Vessel Code, Section II, "Material Specifications"
ASME Boiler and Pressure Vessel Code, Section V, "Non‐Destructive” Examination
ASME Boiler and Pressure Vessel Code, Section IX, "Welding Qualifications."
NACE National Association of Corrosion Engineers
TEMA Standards of Tubular Exchangers Manufacturer's Association. TEMA 'R'
Ensure that the equipment being supplied follows the requirements of all Governmental Agencies.
In the event of conflict between the reference codes and standards, drawings, specifications,
and/or the Purchase Order, obtain clarification from the Engineer before proceeding with the work
but in principle it will be resolved in this order:
 Statutory Regulations
 National, International and Industry Standards and Codes of Practice
 Technical Specifications
2.2 Language and Measurement System
Refer to Standard Specification 00257650‐0000‐40EG‐0001, Vendor Documentation, for the
requirements of all supplied documents.
Provide all equipment nameplates, warning signs, safety signs, push button engravings, and
instrument readouts in English.
Comply with the Imperial system of measurement for all dimensions and the S.l. system (metric)
for all Process units of measurements.
Specification No.
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00257650‐0000‐45ES‐0034
3 Operating Environment
The equipment will operate outdoors in a chemical environment. Provide necessary safeguards and
protection for optimal performance of the equipment.
4 Design Criteria
Ensure the Waste Heat Boiler and ancillary equipment are suitable for the duties specified on the
equipment datasheets 00257650‐0000‐45ED‐0034.
Provide a minimum 10% extra surface area to allow for fouling.
Use the following guidelines for heat transfer calculations:
 Assume zero heat loss to the atmosphere
 Use specified fouling factors (for gas and steam side) when determining the overall
heat transfer coefficient and the required heat transfer surface area.
 Minimum gas design pressure =1.25 x gas pressure in dirty conditions. Steam side
design pressure shall be minimum 10% above the operating pressure in dirty
conditions
 Thermal and mechanical design and calculation, stress analysis of piping and pressure
parts and loading data for civil design.
 Calculation for sizing, set pressure etc. for Safety Relief Valves.
4.1 Process Description
The equipment will be installed in a Sulfuric Acid Plant, downstream of a sulfur furnace. Gases
produced by the burning the sulfur will be routed through the two boilers operating parallel to each
other, where waste heat will be recovered prior to feeding the exit gases to the Converter 1" pass.
4.2 Operating Philosophy
The process plant will operate 365 days per year with continuous, 24 hours per day, heavy‐ duty
full‐load service.
4.3 Performance Characteristics

Refer to the equipment datasheet for performance characteristics.
4.4 Design Life
Design equipment for a minimum operational life of twenty five (25) years.
4.5 Heat Surface Area
Base heat exchange surface area calculation on the gas heat duty (Gas Q) and specified fouling
allowances. Base boiler sizing on the steam production calculated without heat loss. Consider heat
loss in actual steam production rates reported by the Vendor in the datasheets.
Note: To achieve gas temperature control a gas bypass will be installed by others in the ductwork
external to the boiler. The bypass valve is not gas tight when closed, so a minimum of 5% bypass is
specified to account for leakage.
Specification No.
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4.6 Preferred Equipment
Firetube Waste Boiler
4.7 Other
4.7.1 Lifting Devices
Provide assemblies and components with suitable lifting devices (e.g. lugs, eye bolts) to allow for
safe handling, installation, and servicing.
4.7.2 Noise Levels
No applicable.
4.7.3 Safety Guards
Provide safety guards around moving parts and hot surfaces to protect operating personnel from
injury in compliance with EN‐OSHA requirements and other local requirements.
5 Technical Requirements
Review by the Engineer of: Vendor's drawings; other documents; or release of equipment for
shipment by the Engineer, does not relieve the Vendor of his responsibility for compliance with the
Purchase Order nor alter the conditions of the guarantee.
Vendor to provide thermal and mechanical design calculation, stress analysis of piping and pressure
parts, loading data for civil design, equipment layout, P&ID, Process Flow Diagram, utility and
chemical consumption and thermal efficiency and performance guarantee.
5.1 Materials of Construction
Provide materials in accordance with this specification and the manufacturer's recommendation
for the conditions specified. Provide wetted components made from (or lined with) optimum
combination of materials for maximum resistance to wear and corrosion.
Do not substitute materials without prior written approval from the Engineer.
Fabricate the Waste Heat Boiler and Steam Drum using only new materials of first grade quality,
free from defects impairing strength, durability and appearance.
 Provide carbon steel plate material thicker than 5/8” in accordance with ASME SA 516
Grade 70;
 carbon steel flanges and forgings in accordance with SA 105;
 carbon steel pipes in accordance with SA 106 Grade B or C.
 Provide tubesheet material of SA 515 Grade 70, SA 516 Grade 70, or SA 105.
 Provide seamless tube material of SA 210, SA 214, SA 178, or SA 179.
 Weld and roll tubes to tubesheet joints at each end.
 Poste weld heat treat the shell after completion of welding with temperature and hold
times in accordance with ASME Code, Section 1, Power Boilers.
 Do not weld, burn or work on the boiler shell after completion of post weld heat
treatment.
Specification No.
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Ensure steam drum pressure carbon steel piping has minimum thickness as follows:
 Pipes up to 250 mm Sch 40; and
 Pipes over 10” (250 mm) ¼” (6 mm) wall.
All nozzles up to 6" size (150 mm) shall be self reinforcing.
Fabricate all nozzles up to 10” (250 mm) with seamless pipe. For sizes above 10” (250 mm), nozzles
may fabricate from rolled plate with full radiography of welds.
Ensure internal non pressure high alloy steel piping shall have minimum thickness as follows:
 Less than 38 mm Sch 40S; and
 Over 38 mm Sch 10S.
Reinforce ductwork connections at the junction to the shell. Use a 3/8” (9.5 mm) thick by 20” (500
mm) minimum width reinforcing pad.
All materials shall be from reputed Western European or North American Mills, or mills already
approved by the Engineer, supported by proper MTRs.
5.2 Mechanical
5.2.1 General
5.2.1.1. Installation:
Do not slope the boiler installation.
Flange boiler and steam drum connections, except risers and downcomers and gas inlet and outlet
nozzles.
Shop‐fit, match‐mark, and weld‐prepare risers and downcomers prior to shipment.
When field welding of risers and downcomers is required, provide temporary support saddles to
hold the drum in position on the boiler during field erection.
Provide gas inlet and outlet nozzles with splice bends for lap welding to duct work by others.
5.2.1.2. Circulation Ratio:
Design boiler for a minimum circulation ratio of 15 to 1.
5.2.1.3. Gas Side Pressure Drop:
Calculate gas side pressure drop from gas inlet duct flange to gas outlet duct flange, including
entrance and exit losses and losses through ceramic ferrules.
Calculate gas side pressure drop based on the average tube wall thickness, not minimum tube wall
thickness.
Optimize the design in such a way that overall pressure drop is within the limit shown in the
datashee.

Specification No.
PB 2020.01.17 7
00257650‐0000‐45ES‐0034
The estimated gas side pressure drops at the design rate for the waste heat recovery system are as
follows:
Waste Heat Boiler 200 mm W.C.
Superheater 1C 125 mm W.C.
Superheater 2B 125 mm W.C.
Economizer 3A,3B & Superheater 3A 375 mm W.C.
Gas pressure drops on steaming equipment may be varied by the Vendor, provided that the total
does not exceed 825 mm W.C.
5.2.1.4. Nozzle Load
Vendor to provide the maximum allowable nozzle load at the connecting flange surface, both forces
and moments in x, y and z axis.
5.2.2 Corrosion Allowance
Materials of construction and corrosion allowance for all EQUIPMENT and machinery shall be for
the designed life of Equipment. However, minimum corrosion allowance to be adopted for carbon
steel (including 0.5 Mo alloy steels) and others shall be as follows:
Tubes 1.0 mm (0.0400")
Shell 3.2 mm (0.1260")
Inlet / Outlet Vestibules 3.2 mm (0.1260")
Steam Drum 3.2 mm (0.1260")
Piping 1.6 mm (0.063")
Removable parts or internal (on each side 1.6mm (0.063")
in contact with operating fluid)

5.2.3 Boiler
The followings shall be supplied:
5.2.3.1. Manholes (round}
Reinforce each shell side opening for the pressure and temperature stamped on the boiler and for
the test conditions. Fit the manways with a davit. Provide thermal sl1.es on feed water and dosing
connections and on lower water column and level transmitter connections.
5.2.3.2. Handholes (round}
Locate 6” diameter handholes near the top and the bottom of each tubesheet. Locate handholes
on the side of the boiler shell opposite the gas duct connections.
Specification No.
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5.2.3.3. Shell Side Connections
Supply one start‐up steam connection (2” minimum), with blind flange, on the bottom centerline
of the shell with internal sparger pipe;
One drain connection (minimum 38 mm), with blind flange on the bottom centerline of the shell;
Two 6” (pad on shell type) inspection openings located as close as practical on the waterside face
of each tubesheet on the horizontal centerline of the boiler;
One bottom blow‐off connection (1.5” minimum) at tube sheet including intermediate tubesheets
Other connections necessary for an integral operating system.
Header blow‐off connections together and route to a single termination point.
Provide prefabricated blow‐off piping including necessary valves (see typical in Figure 1).
Vendor is expected to optimize the number of blow off and blow down connections and make their
own recommendations for the Engineer to consider.
Ensure the tubesheet at the gas inlet end has a set of properly designed and securely supported
downcomers and risers located close to it to promote cooling and scrubbing of the tubesheet.
Limit maximum water velocity in a downcomer to 2 m/s.
Provide number and size of the riser pipes such that plug, or slug two phase flow regimes are
avoided at loads between design steam production and 40% steam production.
Limit minimum clearance between the centreline of the outermost tube and the inside diameter of
the shell to 4” to facilitate steam release.
Position riser connections on the top centreline of the boiler shell.
Position downcomer connections on the bottom centreline of the shell or tangential to the bottom
of the shell.
Should tube support baffles be used, place sufficient risers and downcomers on each side of the
tube support baffles for proper operation of the boiler.
Select the boiler operating pressure to ensure that the steam at the outlet of the steam drum is a
minimum of 60 bar (g), 480°C. For boilers with design pressures above 20.7 bar g (300 psig), ensure
tube sheets have a knuckle radius and are butt‐welded to the shell. A flat tubesheet is not
acceptable.
5.2.3.4. Intermediate Tubesheet
If an intermediate tubesheet is used, provide cut‐outs at the top and bottom to prevent steam
binding and sludge collection.
5.2.3.5. Saddle
Support the boiler by one fixed saddle and a suitable number of sliding saddles. Machine finish
saddle surface per ANSI 846.1, 63 RMS.

Specification No.
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00257650‐0000‐45ES‐0034
5.2.3.6. Lining and Insulation
The inlet duct connection to the boiler and the boiler inlet channel or vestibule area to be refractory
lined with refractory supplied and installed by others.
Choice of refractory will be suitable for the gas temperature, pressure, and composition.
Refractory lining will consist of:
 one (1) layer of insulating fire brick
 two (2) layers of super duty fire brick and mortar.
Each layer of brick will be 115 mm for a total of 345mm.
The exterior of the boiler including risers, downcomers and steam drum, EXCEPT refractory‐lined
sections, are insulated to conserve heat and for personnel protection.
Face of boiler tubesheet to use Hexagonal ferrules.
Ensure that flanged/bolted nozzles and valve handles extend outside the insulation perimeter to
clear insulation.
5.2.3.7. Weather Protection
A rain shield is required over the brick lined areas, including but not limited to the inlet vestibule of
the boiler (to be provided by Others).
5.2.3.8. Interconnecting Dueling and Piping
The entire Waste Heat Boiler System needs to be considered as a single unit regardless of number
steam outlet nozzles required and all interconnecting piping to be designed, fabricated and supplied
by the vendor.
The vendor should provide an inlet and outlet connections where others shall connect their process
ducts.
Transitions shall be designed and supplied by other.
5.2.4 Tube
Ensure tube side designed to handle the crushing pressure from shell side of boiler.
5.2.5 Steam Drum
5.2.5.1. Steam Purity:
Ensure steam purity specified by the Engineer is met based on the upper limit of boiler
water solids concentration per ABMA standards but in no case exceed 50 ppb total solids
and 20 ppb sodium. Ensure purity is met at design capacity with the highest expected drum
level. Supply all steam purification equipment and guarantee the steam purity.

5.2.5.2. Steam quality:

Design steam drum to have a steam liberation rate of not more than 457 m3/m2.h (1500
ft3/ft2.h) of liberating area at the normal water level within the drum. Steam quality shall be
99.5% dry at maximum design conditions.
Specification No.
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00257650‐0000‐45ES‐0034
5.2.5.3. Capacity:
Provide a minimum of seven (7) minutes operation or greater at design boiler steaming rate,
measured from the low water alarm actuation level to the down comer piping off takes in the event
of feed water failure.
Connections for water column, level indicators and level transmitters: Locate at the less turbulent
end, usually on the side of drum to allow more space to manholes.
5.2.5.4. Manholes:
Provide two elliptical manholes with davit, minimum 600 x 450 mm, one in each end of the steam
drum.
Continuous Slowdown Connection: Provide continuous blowdown connection with internal piping.
Ensure the internal piping is properly supported and run the full length of the steam drum.
5.2.5.5. Steam Purification Equipment
Securely attach steam purification equipment so that they cannot become loose during operation.
5.2.6 Inlet and Outlet Vestibules

5.2.6.1. Manholes
Provide each vestibule a manhole with bolted cover and davit. Ensure the manhole is a minimum
of 30” inside steel. Inlet vestibule manhole refractory plug will be provided by others.
5.2.6.2. Gas Connections
Provide gas connections with undrilled, flanged nozzles with an out of roundness tolerance of:
+1/2, ‐0” (12.7 mm ‐0 mm). Ground flat flange face welds.
5.2.6.3. Plate Material
Fabricate vestibules over 5 feet diameter (1524 mm) from 1/2 inch (12.7mm) thick plate minimum
of ASTM A516 Grade 70.
5.2.6.4. Drain
Provide outlet vestibule with one 50mm (2") flanged drain connection with blind flange, bolts, nuts
and gasket. Provide inlet vestibule with one 38mm (1.5") NPT drain with plug (for refractory cure).
Drain valves are provided by others.
5.2.7 Lance Ports
Lance Ports are not required.

Specification No.
PB 2020.01.17 11
00257650‐0000‐45ES‐0034
5.2.8 Miscellaneous
5.2.8.1. Hardware
Alloy Steel Stud Bolts‐ ASTM A193 Grade B7, with two heavy unfinished ASTM A 194 Grade 2H hex
nuts for flanged piping connections.
5.2.8.2. Gaskets:
Inlet/Outlet Vestibule Manholes:
Two (2) sets (one spare set) of gaskets. 3.2mm (1/8") thick, Vermiculite coated Tetraglas
3000, 2‐ply cloth with stitching, manufactured by Darco Southern, or approved equal.
Boiler Shell and Steam Drum:
Two (2) sets (one spare set) of Flexitallic gaskets for flanged connections, including manholes,
handholes, and other piping connections. (Style "CG", ring type, flexible graphite spiral
wound, for all piping connections.)
5.2.8.3. Lifting Lugs:
Lifting lugs, as required, on the steam drum and/or the boiler shell to facilitate field unloading and
installation.
5.2.9 Welding of Tubes to Tubesheets
5.2.9.1. Materials
Ensure materials used are as listed in the ASME Boiler and Pressure Vessel Code‐ Welding
Qualifications, Section IX.
Fabrication Method: Submit a description of the proposed method of fabrication for review and
approval by the Engineer prior to starting the work. Describe steps in detail of joint preparation,
cleaning, assembly, welding, tube expanding, and inspection.
5.2.9.2. Welded Joints:
Strength weld tubes to the tubesheets in accordance with Fig. PFT‐12.1(g) of ASME Power Boiler
Code Section I, except the inner surface of the tube hole cannot be grooved.
Perform welding by qualified operators, certified per ASME Code, Section IX. Preparation:
Ensure the tube holes and the tube ends are free of longitudinal and spiral scratches.
Clean the joint area of foreign materials such as moisture, oil, grease, paint, scale and rust.
5.2.9.3. First Roll (Light Roll)
Roll the tubes into the tube sheets allowing enough expansion for metal‐to‐metal contact between
the tube and the tube sheet hole and to hold the tube from sliding. Record torque setting for use
on production rolling. If lubricants are used, they must be completely removed prior to gauging and
welding. Use vendor's standard method for cleaning, inspection and positioning.
Specification No.
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00257650‐0000‐45ES‐0034
5.2.9.4. First Pass Welding:
Weld the first pass and inspect welds for defect, ensuring that no gas is trapped in between the
weld and the tube. Grind out any defects and weld repair with GTAW process as necessary.
5.2.9.5. Air and Leak Test Inspection:
Pressure test shell side shall be 1.03 bar g (15 psig) and test for leaks. Use liquid leak detector,
"Snoop", (Manufacturer's Trade Name). "Snoop" is non‐toxic, pure, non‐flammable, contains no
chlorine or halogen additives, and dries clean leaving no residue to collect dust or cause corrosion
of treated components.
Reference exact location of any leaks on the tubesheet template. To repair, grind to weld root at
the locations of the leak, inspect for additional defects, weld repair with GTAW (gas tungsten arc
welding) process, and retest in accordance with the above procedure.
5.2.9.6. Second and Third Pass Welding:
Make second and third pass welds. Deslag and wire brush welds at tie‐in locations before making
tie‐in and after weld completion of each pass. Visually inspect welds. Grind out defects and repair
with the GTAW process as necessary. Pneumatic deslagging of the completed weld is not permitted.
5.2.9.7. Final Expanding:
After welding, final expand tubes using automatically controlled torque rolling equipment. The
preferred degree of expansion is a 5% to 7% tube wall thickness reduction. Do not expand tubes
beyond a 10% tube wall thickness reduction. A maximum of 10% of the tube connections may fall
between 7% and 10% tube wall thickness reduction.
Stop roll (3.2 mm) 1/8" from back side of tube sheet. Clean for gauging to confirm wall thickness
reduction specified on gauging sheet. Rolling lubricant may be used.
Confirm desired wall thickness reduction and roll depth. Visually inspect tube IDs for freedom from
roll scoring.
Carry out 100% LPE/MPI of Tube to Tube sheet weld joint.
5.2.9.8. Hydrostatic Test and Inspection:
Conduct hydrostatic test in accordance with ASME Boiler and Pressure Vessel Code and visually
inspect each weld for leaks.
Reference leaks on the tubesheet template.
To repair, drain shell, preheat to 93‐121°C (200‐250°F) to expel crevice moisture from the
hydrostatic test. Grind out leak to the first pass weld root, inspect the cavity for other defects, and
repair with the GTAW process. Reroll with a maximum wall reduction of 2% to 3%, gauge to confirm
and record torque setting. Hydrostatic test to be repeated.
Do not reroll defective tube joints while the shell side is pressurized. Use volatile, sulfur free, lead
free lubricant.

Specification No.
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5.2.10 Accessories Required
5.2.10.1. Piping and Valves
Provide connections, piping and valves shown in Figure 1 and in accordance with ASME Section I
code. Prefabricate piping in scope with flanged connections to the pressure vessels.
5.2.10.2. Safety Valves.
Furnish a minimum of two safety valves per ASME Section L Set the first valve at boiler design
pressure, the second valve at 3% above the design pressure. Ensure the capacity of the safety valves
is at least 110% of the boiler steam generation capacity at full rate.
While setting the safety valve, care must be taken that steam drum safety valve does not pop up
prior to safety valve of other equipment like Super‐heater in the system.
Calculation for safety valve sizing and set pressure to be provided.
5.2.10.3. Manual Flow‐control valve for continuous blowdown
Size the valve for double the specified continuous blowdown rate. Provide the valve with an
opening setting indicator.
5.2.10.4. Connections
Provide flanged connections up to and including the second valves from the boiler, except the
blowdown valves from the level instrumentation, Weld the blowdown valves from the level
instrumentation prior to shipment.
Provide drain connections and blind flanges for downcomers as necessary.
5.3 Structural
Not applicable
5.4 Electrical
Not applicable
5.5 Instrumentation and Control System
Provide instrumentation in accordance with Standard Specification 00257650‐0000‐48EG‐ 0001
Instrumentation Requirements for Equipment Packages.
See Figure 1. Provide, in accordance with ASME Code, one pressure gauge (size 8” (200mm)
minimum) with siphon, water column with two (2) water level gauge glasses, weatherproof light,
gauge valves, safe! relief valves and spare tubular glasses for bailout.

Specification No.
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00257650‐0000‐45ES‐0034
5.5.1 Drum Level Monitoring System
Provide local/remote drum level monitoring system with components and capability described
below. Provide Clark‐Reliance Electro Eye‐Hye® system or approved equal. Ship components with
the boiler.
Provide a Drum‐mounted electrode chamber with a minimum of ten (10) probes for boiler level
indication complete with necessary block valves and flanged connections. Ensure indicating range
is the same as the visible range of the gauge glass.
5.5.2 Control unit: Relays ‐ Plug‐in type.
Contacts ‐ Provide one relay with a minimum of two SPOT (single pole double throw) dry contacts
for each level indication. Wire one set of contacts to a terminal strip and power with appropriate
power to drive the Vendor‐supplied standard light indicator. Wire another set of dry contacts to a
separate terminal strip for customer interface/remote indication. Provide additional contacts for
high, low, and low‐low levels for alarm and trip functions. Determine and identify electrode
positions for the three alarm/trip functions.
Fully wire contacts to numbered terminals within the control unit.
Enclose the control unit components in a single, stainless steel IP56 enclosure.
5.5.3 Drum Level Indicator:
Standard light drum level indicator showing a column of lights corresponding to boiler drum level.
Provide a minimum of ten (10) lights. Indicator to be suitable for field surface mounting in an IP56
enclosure provided by the Vendor.
Provide remote miniature ten light indicator for panel mounting if required.
Provide and use stainless steel IP56 junction box(es) with numbered terminals between the
electrodes and the control unit.
5.5.4 Surface Treatment
Shop‐metallize internal carbon steel and Cr‐moly casing surfaces above 371°C. Clearly identify areas
to be metallized on General Arrangement drawings.
Apply manufacturer's standard surface coating system for high temperature application in harsh
chemical environments to external surfaces. Apply surface coatings in inaccessible locations prior
to assembly.
Provide components to be insulated with primer only. Apply finish coat to refractory lined
components.
Do not paint stainless steel or galvanized surfaces.

Specification No.
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5.6 Equipment Identification, Marking and Labeling
Fit and assemble work in the shop, to the maximum extent possible. Where final assembly in the
shop is not possible, part assemble in the shop and match‐mark the component parts to ensure
proper assembly on site.
Identify individual pieces in accordance with the identification schedule used on the shop drawings
and bill of materials to clearly indicate their location in the work for installation.
Provide each unit with a stainless steel nameplate including the equipment tag number, the
manufacturer, model number, serial number, year of construction, design code, size/rating, etc.
6 Quality Assurance (QA)
6.1 QA Requirements
Submit Inspection and Test Plan (ITP) as per 00257650‐0000‐33EG‐0001, QA Requirements for
review detailing inspection points performed during the manufacturing cycle. Ensure the ITP has an
area for input of Customer I Client Inspection Witness and Hold points.
Following completion of the work, issue a history docket comprised of the quality certificates,
inspection and test records, and any other relevant documents related to manufacture and testing
for the Engineer's record files.
6.2 Inspection and Testing
6.2.1 Inspection
Inspect materials, castings and shop welds before shipment. Ensure the inspection complies with
applicable standards as well as EXP’s requirements as outlined above.
Submit a written statement that materials conform to the drawings and specifications.
Provide the Engineer with all reasonable access to the work and supporting documentation for
inspection whether it is in preparation or in progress. Provide proper facilities for such access and
for inspection.
6.2.2 Shop Testing
Provide the Engineer or EXP’s appointed agent with reasonable access to the work whether it is in
preparation or in progress including free access to all shop inspection and NOT documentation.
Provide proper facilities for such access and for inspection.
Ensure the Equipment bears the appropriate ASME Code stamp.
Hydrostatic test to be performed at the vendors shop.

Specification No.
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6.2.3 Field Testing
On completion of the entire installation, the Vendor will be required to supervise the Engineer in
carrying out all tests deemed necessary in order to determine the proper functioning and general
performance of the equipment. The Vendor will, at his own cost, make any adjustments and changes
required, to such end that an efficient and fully operational installation will result. Final acceptance
by the Engineer will be conditional upon fulfilment of this requirement.
For equipment subject to inspection by a government ministry, department, or agency, submit to the
Engineer original copies of the test data reports and all other documentation required for the final
field inspection of the equipment by the government ministry, department or agency.
Figure 1.
This figure shows components to be supplied by the Vendor. Supply additional blowoff valves as
required to meet the specification.
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Standard

ABMA ABMA American Boiler Manufacturers Association.

ANSI American National Standards Institute, Pipes, Flanges, Fittings and Valves

ASME Boiler and Pressure Vessel Code, Section I, "Power Boilers."

ASME Boiler and Pressure Vessel Code, Section II, "Material Specifications"

ASME Boiler and Pressure Vessel Code, Section V, "Non‐Destructive” Examination

NACE National Association of Corrosion Engineers

TEMA Standards of Tubular Exchangers Manufacturer's Association. TEMA 'R'

4.3 Performance Characteristics

5.2.5.2. Steam quality:

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