32-SAMSS-019

Materials System Specification

32-SAMSS-019 6 September 2008 Manufacture of Plate and Frame Heat Exchangers

Heat Transfer Equipment Standards Committee Members Anizi, Salamah Salem, Chairman Bagawi, Jamil Jarallah, Vice Chairman Fernandez, Gabriel Thomas Harbi, Abdullah Mohammed Saeed Gahtani, Moraya Saif Rumaih, Abdullah Mohammad Dossary, Musfir Abdullah Mansour, Khalid Mohammad Guthami, Mohammed Mohsen Anezi, Mohammed Ali Hamam, Ibrahim Hassan Naffaa, Mahmoud Youniss

Saudi Aramco DeskTop Standards Table of Contents 1 Scope............................................................. 2 2 Normative References................................... 3 3 Terms, Definitions and Abbreviated Terms.... 5 4 General.......................................................... 6 5 Conflicting Requirements............................... 7 6 Proposal Information Required....................... 7 7 Drawings and other Data Requirements........ 8 8 Design............................................................ 8 9 Materials....................................................... 12 10 Fabrication.................................................... 12 11 Inspection and Testing................................. 12 12 Preparation for Shipment............................. 15 13 Supports....................................................... 16 14 Painting........................................................ 16 15 Wind A and Earthquake Loads.................... 17

Previous Issue: 30 July, 2003 Next Planned Update: 6 September 2013 of 17 Primary contact: Anizi, Salamah Salem on 966-3-8746139

Copyright©Saudi Aramco 2008. All rights reserved.

Document Responsibility: Heat Transfer Equipment 32-SAMSS-019 Issue Date: 6 September 2008 Next Planned Update: 6 September 2013 Manufacture of Plate and Frame Heat Exchangers

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The following paragraph numbers refer to API STD 662, Second Edition, April 2002, which is part of this specification. The text in each paragraph below is an addition, exception, modification, or deletion to API STD 662 as noted. Paragraph numbers not appearing in API STD 662 are new paragraphs to be inserted in numerical order.

1 Scope

1.1 (Exception) This specification covers the minimum mandatory requirements for the manufacture of new plate and frame type heat exchangers (hereinafter referred to as exchangers) for hydrocarbon and utility services.

1.2 The requirements in this specification are in addition to and supplement the requirements of the ASME Boiler and Pressure Vessel Code hereafter designated as Code.

1.3 General

1.3.1 The Design Engineer is responsible for specifying the process data, the mechanical design requirements, and completing the API exchanger data sheet.

1.3.2 Should the Exchanger Manufacturer have any part of a stress analysis executed by a third party, the Exchanger Manufacturer shall advise the Saudi Aramco Engineer.

1.3.3 No proof testing shall be permitted unless specifically approved by the Saudi Aramco Engineer.

1.3.4 Application of ASME Code Cases to the manufacture of exchangers requires approval of the Saudi Aramco Engineer.

1.3.5 The Exchanger Manufacturer is responsible for the thermal design (rating) and verification of the Design Engineer's thermal design, if applicable. The Exchanger Manufacturer is also responsible for the manufacture of exchanger, which includes the complete mechanical design, Code and structural calculations, supply of all materials, fabrication, nondestructive examination, inspection, testing, surface preparation, and preparation for shipment, in accordance with the completed data sheet and the requirements of this specification.

1.3.6 The edition of the Code to be used for the manufacture of exchangers shall be the edition in effect at time of purchase.


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1.3.7 Where a licensor's specification requirement is more stringent than that of this specification, this licensor's specific requirement shall govern.

2 Normative References

(Exception) Material or equipment supplied to this specification shall comply with the latest edition of the references listed below, unless otherwise noted.

2.1 Saudi Aramco References

Saudi Aramco Engineering Procedure

SAEP-302 Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco Engineering Requirement

Saudi Aramco Engineering Standards

SAES-A-007 Hydrostatic Testing Fluids

SAES-A-206 Positive Material Identification

SAES-H-101 Approved Protective Coating Systems

SAES-H-101V Approved Saudi Aramco Data Sheets - Paints and Coatings

SAES-W-010 Welding Requirements for Pressure Vessels

Saudi Aramco Inspection Requirements

Form 175-323300 Manufacture of Plate and Frame Heat Exchangers

Saudi Aramco Forms and Data Sheets

Form NMR-7922-4 Non-material Requirements

Form 8172-ENG Plate Type Exchanger Specification Sheet (herein referred to as data sheet)

2.2 Industry Codes and Standards

American Society of Civil Engineers

ASCE 7 Minimum Design Loads for Buildings and Other Structures

http://standards/docs/Saep/PDF/SAEP-302.PDF

http://standards/docs/Saes/PDF/SAES-A-007.PDF


http://standards/docs/Saes/PDF/SAES-H-101.PDF

http://standards/docs/Saes/PDF/SAES-H-101V.PDF

http://standards/docs/Saes/PDF/SAES-W-010.PDF

http://standards/docs/Inspection_Requirements/PDF/175-323300.PDF

http://standards/docs/Nonmaterial_Requirements/PDF/SA-7922-4.PDF

http://standards/docs/Forms_Data_Sheets/XLS/SA-8172.XLS


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American Society of Mechanical Engineers (Boiler and Pressure Vessel Codes)

ASME B16.5 Pipe Flanges and Flanged Fittings

ASME B16.11 Forged Steel Fittings, Socket Welding and Threaded

ASME SEC V Non-destructive Examination

ASME SEC VIII D1 Rules for Construction of Pressure Vessels

ASME SEC VIII D2 Rules for Construction of Pressure Vessels, Alternative Rules

American Society for Testing and Materials

ASTM A105 Carbon Steel Forgings for Piping Application

ASTM A106 Seamless Carbon Steel Pipe for High Temperature Service

ASTM A193 Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service

ASTM A194 Carbon and Alloy Steel Nuts for Bolts for High Pressure and High Temperature Service

ASTM A283 Low and Intermediate Tensile Strength Carbon Steel Plates

ASTM A285 Pressure Vessel Plates, Carbon Steel, Low and Intermediate Tensile Strength

ASTM A515 Pressure Vessel Plates, Carbon Steel, for Intermediate and Higher Temperature Service

ASTM A516 Pressure Vessel Plates, Carbon Steel, for Moderate and Lower Temperature Service

American Society for Nondestructive Testing

ASNT CP-189 Standard for Qualification and Certification of Nondestructive Testing Personnel

U.S. Military Standards and Federal Specifications

MIL-C-16173 Corrosion Preventive Compound, Solvent Cutback, Cold-Application


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American Petroleum Institute

API STD 662 Plate Heat Exchangers for General Refinery Services

3 Terms, Definitions and Abbreviated Terms

3.1.20 AARH: Average arithmetic roughness height, which is a measure of surface texture

Cyclic Services: Services that require fatigue analysis per AD-160 of ASME SEC VIII D2. This applies to Division 1 and Division 2 of ASME SEC VIII.

Design Engineer: The Engineering Company responsible for specifying on the data sheet the thermal and mechanical design requirements for exchangers

Exchanger Manufacturer: The company responsible for the manufacture of exchangers

Exchanger Unit: One or more exchangers for a specific service

Hydrocarbon Service: Process streams of liquid or gaseous hydrocarbon materials.

Hydrogen Service: Process streams containing relatively pure hydrogen and component streams containing hydrogen with a partial pressure of 350 kPa (50 psia) and higher.

Lethal Services: Process streams containing a concentration of hydrogen sulfide in excess of 20% by volume shall be considered as lethal service.

Pressure Design Code - ASME SEC VIII

Saudi Aramco Engineer: The Supervisor of the Process Equipment Unit, Consulting Services Department, Dhahran

Saudi Aramco Inspector: The person or company authorized by the Saudi Aramco Inspection Department to inspect exchangers to the requirements of this specification.

Shroud: is a removable sheet metal covering for top and sides of the plate pack of the plate heat exchanger that provides personnel protection in the event of a spray leak.


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Structural Welding Code

Utility Services: Includes potable water, cooling water, and seawater

Wet Sour Service: Following process streams containing water and hydrogen sulfide:

1) Sour water with a hydrogen sulfide concentration above 2 milligrams per liter.

2) Crude containing hydrogen sulfide when transported or processed prior to completion of stabilization (60 ppm H2S and higher).

3) Gas or hydrocarbon condensate containing hydrogen sulfide when transported or processed prior to completion of sweetening or hydrogen sulfide stripping.

4) Multiphase services when the partial pressure of hydrogen sulfide is above 0.34 kPa abs (0.05 psia) in the gas phase or a concentration of hydrogen sulfide above 2 milligrams per liter in the water phase.

Wet Sour HIC Services: All of the above Wet Sour Services where the H2S concentration in the water phase is above 50 milligrams per liter.

Exception:

Lean and rich DGA services, other lean amine services, and caustic services are not included.

4 General

4.1 (Exception) The Design Engineer is responsible for specifying the process data, the mechanical design requirements, and completing the API exchanger data sheet

4.2 (Exception) The Exchanger Manufacturer shall advise the Saudi Aramco Engineer.

4.4 Should the Exchanger Manufacturer have any part of a stress analysis executed by a third party, the Exchanger Manufacturer shall advise the Saudi Aramco Engineer.

4.5 No proof testing shall be permitted unless specifically approved by the Saudi Aramco Engineer.

4.6 Application of ASME Code Cases to the manufacture of exchangers requires approval of the Saudi Aramco Engineer.


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4.7 The Exchanger Manufacturer is responsible for the thermal design (rating) and verification of the Design Engineer's thermal design. The Exchanger Manufacturer is also responsible for the manufacture of exchanger, which includes the complete mechanical design, Code and structural calculations, supply of all materials, fabrication, nondestructive examination, inspection, testing, surface preparation, and preparation for shipment, in accordance with the completed data sheet and the requirements of this specification.

4.8 The edition of the Code to be used for the manufacture of exchangers shall be per the referenced code edition in effect at time of purchase.

4.9 Where a licensor's specification requirement is more stringent than that of this specification, this licensor's specific requirement shall govern.

5 Conflicting Requirements

5.1 Any conflicts between this specification and other applicable Saudi Aramco Materials System Specifications (SAMSSs), Engineering Standards (SAESs), Standard Drawings (SASDs), or industry standards, codes, and forms shall be resolved in writing by the Company or Buyer Representative through the Manager, Consulting Services Department of Saudi Aramco, Dhahran.

5.2 Direct all requests deviating from this specification in writing to the Company or Buyer Representative, who shall follow internal company procedure SAEP-302 and forward such requests to the Manager, Consulting Services Department of Saudi Aramco, Dhahran.

6 Proposal Information Required

6.1 (Exception) The Exchanger Manufacturer's proposal shall be based on details for individual exchangers as outlined on the data sheet. A completed data sheet shall be submitted for each exchanger unit quoted.

6.10 The Exchanger Manufacturer may offer an alternative design, but must quote on the base inquiry documents.

6.11 The proposal shall include the following information:

(1) Method of plate alignment

(2) Total height of the exchanger

http://standards/docs/Saep/PDF/SAEP-302.PDF


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7 Drawings and other Data Requirements

7.1 Drawings

(Exception) The Exchanger Manufacturer shall prepare and submit for approval all proposed welding procedures prior to start of fabrication.

7.1.6 (Exception) The Exchanger Manufacturer shall prepare drawings, calculations, and data in accordance with Form NMR-7922-4, Nonmaterial Requirements.

7.2 Final Record:

7.2.3 The Exchanger Manufacturer shall prepare and submit final records in accordance with Form NMR-7922-4 Nonmaterial Requirements.

8 Design

8.1 General

8.1.4 The mechanical design of exchangers shall allow for compression assembly bolts to be tightened from one end using a single wrench.

8.1.5 Exchangers shall be thermally designed by the Exchanger Manufacturer and be capable of continuous service within the design parameters as specified on the data sheet.

8.1.6 Exchangers shall be designed to withstand the combined stresses of all loads in accordance with the Code and this specification.

8.1.7 The Exchanger Manufacturer shall specify the pass arrangement at time of proposal. Single-pass designs with counter-current flow, such that inlet and outlet connections are located in the stationary cover, are preferable.

8.1.8 Exchangers shall have an even flow distribution across the heat transfer surface.

8.1.9 Variations in velocity across heat transfer surfaces shall be minimal.

8.1.10 All exchangers shall be designed in accordance with the rules of the Boiler and Pressure Vessel Code, ASME SEC VIII D1 (herein referred to as the Code), API STD 662 and the requirements of this specification.

8.2 Design Temperature




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8.2.3 The value of design temperature shall be in accordance with the data sheet.

8.2.4 The design temperature of flanges, including bolting and gaskets for inlet and outlet flanges shall be the higher hot-side design temperature.

8.3 Design Pressure

The plate heat exchanger design shall not be based on differential pressure. The value of design pressure(s) shall be in accordance with the data sheet. The Exchanger Manufacturer shall calculate the maximum allowable working pressure (MAWP), in the hot and corroded condition in accordance with the Code. The calculations shall be based on the nominal as-built thicknesses excluding thicknesses required for corrosion. The MAWP of an exchanger shall not be limited by flange ratings.

8.4 Fouling Margin

(Exception) In lieu of the fouling factors normally used in the design of shell and tube heat exchangers, the exchangers shall be designed for the excess thermal capacities given below. Higher excess percentages, if deemed necessary, may be proposed for Saudi Aramco Engineer's consideration.

8.4.1 A minimum of 15% excess thermal capacity shall be provided for clean services such as cooling of process water, light oils and light process streams, utilizing tempered water as the cooling medium.

8.4.2 A minimum of 20% excess thermal capacity shall be provided for exchangers using sea water and for fouling services such as cooling of crude oil, emulsion and heavy process streams, utilizing sea water or other process fluids as cooling medium.

8.6 Components

8.6.1 Plates should confirm to the following:

h The minimum thickness of heat transfer plates shall be 0.5 mm

i) Each plate shall be designed to withstand the design pressure on the high pressure side with atmospheric pressure on the other side.

j) Plates shall have metal-to-metal contact between plates to withstand the full differential pressure. The nominal channel spacing shall be a minimum of 1.5 mm.


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k) Plates shall be aligned by carrying bars and guide bars for proper sealing of plate gaskets.

l) Plates shall be supported from the top carrying bar only.

m) Plates shall have a channel geometrical design and shall be identical for both fluids, where practical. The use of mixed channel designs, if offered, shall be specified by the Exchanger Manufacturer with the proposal.

8.6.2 Fixed and Movable Covers shall conform to the following:

a) (Exception) Fixed and movable cover plates shall be designed to meet the design pressure without the aid of stiffeners.

c) Frame length shall be such as to permit future installation of a minimum of 20% additional plates.

d) All Plate heat exchangers shall be equipped with a protective metal shroud.

8.6.6 (Exception) The supplier should provide details of the reaction at the support point.

8.7 Connections

8.7.10 (Exception) Unless calculated loadings are approved by Saudi Aramco Engineer, loadings shown in table 2 shall be used.

8.7.11 The sizes of inlet and outlet connections, if specified on the data sheet, shall be verified by the Exchanger Manufacturer at time of proposal.

8.7.12 In no case shall the thickness of nozzle necks be less than ANSI Standard Weight pipe wall thickness

8.7.13 Inlet and outlet connections shall be of the following types:

1) Forged steel long welding neck.

2) Forged steel welding neck flange with seamless pipe, or rolled plate with 100% radiography. The bores of nozzle flanges shall match the nozzle neck bore.

3) Slip-on type flanges with seamless pipe nozzle necks (or rolled plate with 100% radiography) up to and including 120°C (248°F) design metal temperature and 1.7 MPa (200 psig) pressure.

4) Studded nozzles or integral pad type flanges or proprietary designs may be offered as alternatives provided their design is in accordance with the Code.


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8.7.14 Threaded connection 1.5 inch nominal pipe size and smaller, for utility services, shall be in accordance with ASME B16.11.

8.7.15 Ratings (ASME Pressure Classes) and Facings

8.7.15.1 The ASME pressure classes and facings of inlet and outlet connections shall be as specified on the data sheet.

8.7.15.2 Pressure ratings shall be in accordance with ASME B16.5.

8.7.15.3 Gasket seating surfaces shall be 125 to 250 AARH.

8.8 Plate Gaskets

8.8.6 The service temperature of the gaskets shall not exceed the values in Table 1.

Table 1 – Service Temperature

Gasket Material Maximum Service Temperature Service

Natural rubber, styrene, neoprene 70°C Non-Oil Resistant

Nitrile 100°C Oil Resistant

Resin-cured butyl 120°C Non-Oil Resistant

Etyhlene/propylene 140°C Oil Resistant

Silicone 140°C Oil Resistant

The use of other gasket materials may be proposed for the consideration of the Saudi Aramco Engineer.

8.8.7 Heat transfer plate edges and cover plates shall be sealed with elastomeric gaskets to prevent leakage through alternate spaces between plates.

8.8.8 Gaskets shall be one-piece dual-type to ensure that gasket failure will only result in external leakage and not fluid mixing.

8.9 Handling Device

The exchanger shall be provided with four lifting eyes arranged to allow a single-point lift shall be provided with the capability of supporting the weight of the entire exchanger.


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9 Materials

9.1 (Exception)

9.1.1 Frames shall be constructed of either ASTM A283 Grade C, ASTM A285 Grade C, ASTM A515, or ASTM A516.

9.1.2 Carbon steel piping shall be ASTM A106 Grade B.

9.1.3 Forged carbon steel fittings shall be ASTM A105.

9.1.4 For sea water services, the heat transfer plates shall be titanium. For all other services, the plates shall be either AISI 304 or AISI 316 stainless steel with a carbon content of less than 0.07%. Other suitable plate materials may be proposed for the consideration of Saudi Aramco Engineer.

9.1.5 Inlet and outlet connections for sea water service shall be clad with a corrosion resistant metallic lining or shall be solid alloy material. The alloy/lining material shall be the same as for the heat transfer plates.

9.1.6 All materials, except carbon steels, shall be alloy verified by the Exchanger Manufacturer in accordance with SAES-A-206.

9.5 (Exception) Tie-bolts shall be ASTM A193 Grade B7 with ASTM A194 Grade 2H nuts. Bolts and nuts shall be either ceramic coated, Teflon coated, or nickel plated.

10 Fabrication

10.1 (Exception) All welding shall be in accordance with the requirements of SAES-W-010.

10 Forming

10.5.1 Plate edge laminations of ferrous materials, revealed by magnetic particle examination, shall be completely removed and repaired.

10.5.2 Inlet and outlet connections shall be ground flush to the inside of cover plates.

11 Inspection and Testing

11.1.2 (Exception)

11.1.2.1 All nondestructive testing (NDT) shall be performed in accordance with


http://standards/docs/Saes/PDF/SAES-W-010.PDF


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the Code and this specification.

11.1.2.2 All nondestructive testing shall be in accordance with ASME SEC V.

11.1.2.3 All pressure and non-pressure welds shall be visually inspected where accessible.

11.1.2.4 Radiographic Testing

11.1.2.4.1 Welds shall be radiographically examined as required by the Code.

11.1.2.4.2 Radiographic film interpretation shall be done by personnel certified in accordance with ASNT CP-189 to ASNT Level II Film Interpreter or approved equivalent

11.1.2.5 Ultrasonic Testing

Where radiography is deemed inaccessible or inconclusive, ultrasonic testing may be substituted with approval of the Saudi Aramco Inspection Department.

11.1.2.6 Magnetic Particle Testing

11.1.2.6.1 Permanent magnetic yokes are not permitted.

11.1.2.6.2 Magnetic particle testing shall be conducted on all structural attachment welds on pressured components of ferro-magnetic materials and which are attached after the hydrotesting of the exchanger.

11.1.2.6.3 Prods are not permitted for use on air-hardenable materials and materials, which require impact testing.

11.2 Hydrostatic Testing

11.2.5 (Exception) Fluids used for pressure testing shall be as follows:

1) Clean potable water, treated for control of bacteria and corrosion.

2) For exchangers with stainless steel, Monel and non-ferrous internals, the water shall be clean condensate with maximum chloride content of 50 ppm.

11.2.6 After testing, exchangers shall be completely drained and thoroughly dried with dry air to an exit dew point of less than -1°C.

11.2.7 Pressure tests shall be performed after completion of all welding and prior to any painting in accordance with the Code and this specification.


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11.2.8 The use of shellacs, glues, lead, etc., on gaskets during testing is prohibited.

11.2.9 The Exchanger Manufacturer shall furnish all test materials and facilities, including blinds, bolting, and gaskets.

11.2.9 The test pressure shall be 1.5 times the Maximum Allowable Working Pressure (MAWP) of the heat exchanger multiplied by the lowest ratio (for the materials of which the exchanger is constructed) of the allowable stress for the test temperature to the allowable stress for the design temperature.

11.3 Nameplates and Stampings

11.3.2(e) (Exception) The nameplate shall include the pressure deign code and the stamp.

11.3.5 Each exchanger shall be identified by a nameplate and marked with the information required by the Code.

11.3.6 All exchangers shall be Code stamped in accordance with the Code.

11.3.7 Nameplates shall be located such that they are easily readable from grade or a platform.

11.3.8 Nameplates shall be manufactured from type 304 stainless steel or Monel.

11.4 Inspection Access

11.4.1 The Saudi Aramco Inspector shall have free access to the work at all times.

11.4.2 Saudi Aramco shall have the right to inspect the fabrication at any state and to reject material or workmanship which does not conform to the specified requirements.

11.4.3 Saudi Aramco reserves the right to inspect, photograph, and/or videotape all material, fabrication, coating, and workmanship and any materials, equipment, or tools used or to be used for any part of the work to be performed.

11.4.4 Saudi Aramco may reject the use of any materials, equipment, or tools that do not conform to the specification requirements, jeopardize safety of personnel, or impose hazard of damage to Saudi Aramco property.


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11.4.5 All of the rights of Saudi Aramco and their designated representatives for access, documentation, inspection, and rejection shall include any work done by sub-contractors or sub-vendors.

11.4.6 The Exchanger Manufacturer shall provide the Saudi Aramco Inspector all reasonable facilities to satisfy him that the work is being performed as specified.

11.4.7 The fabricator shall furnish, install, and maintain in a safe operating condition all necessary scaffolding, ladders, walkways, and lighting for a safe and thorough inspection.

11.5 Repairs During Fabrication When required by the Code, repairs requiring welding after heat treatment shall be re-heat treated, or after testing shall be re-tested or after NDE shall be re-examined using the previous NDE method.

12 Preparation for Shipment

12.1 (Exception) Prior to shipping, exchangers are to be thoroughly dried and completely cleaned to the satisfaction of the Saudi Aramco Inspector.

12.3 (Exception) Flanged connections and all other machined surfaces shall through be protected by a suitable coating, which is easily removed in the field 12.4 and fitted with a steel or wood cover, 3 mm thick and neoprene gaskets.

Covers shall be securely attached by a minimum of four bolts equally spaced. For ocean shipment, flanged connections shall also be covered with heavy duty plastic bags securely taped to the nozzles.

12.5 The internals of exchangers shall be protected from corrosion by use of a non-toxic vapor phase corrosion inhibitor such as COTEC VCI-309 or 307 or equivalent applied at a rate of 1 kg/m³. Alternatively, nitrogen blanketing or temporary coatings in accordance with MIL-C-16173 Grade IV (example Tectyl 846) may be used.

12.6 The inhibitor selected must be appropriate for the metallurgy of the exchanger.

12.7 Exchangers must be sealed vapor tight for the inhibitor to be effective.

12.8 Corrosion inhibitor for use on exchangers with internals of corrosion resistant materials must be chloride free, suitable for its intended use and not result in crevice corrosion.


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12.9 Threaded nozzle connections shall be protected with threaded plugs. However, telltale holes in reinforcing pads shall be protected with wooden plugs or packed with grease.

12.10 Marking shall be done with water-insoluble material that contains no harmful substances that would attack or harmfully affect the material at ambient or elevated temperatures. The marking material shall be free of lead, sulfur, zinc, cadmium, mercury, chlorine, or other halogens.

12.11 The Exchanger Manufacturer is responsible for ensuring that exchangers being shipped are adequately braced and shall provide temporary supports where appropriate to ensure adequate supporting of the exchanger during shipment.

12.12 Stainless steel exchangers shall be protected from salt water and salt-water spray during shipment.

12.13 Export packaging marking and shipping shall be in accordance with the purchase order.

13 Supports

13.1 General

13.1.1 Exchangers shall be designed as self-supporting units and supported by a structural steel base.

13.1.2 The allowable concrete bearing stress to be used for the design of base plates shall be 5170 kPa (750 psi).

13.2 Anchor Bolts

The Exchanger Manufacturer shall determine the size and number of anchor bolts required.

14 Painting

14.1 The type of coating and painting systems to be used shall be in accordance with the data sheet and the Saudi Aramco Approved Protective Coating Systems attached to the purchase order.

14.2 Prior to coating, the surfaces shall be cleaned to remove all scale, rust, grease dirt, weld spatter and foreign objects.

14.3 Gasket contact surfaces shall not be painted.


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14.4 Mandatory technical properties and storage, mixing and application requirements shall be according to the Saudi Aramco Data Sheet SAES-H-101V.

15 Wind A and Earthquake Loads

15.1 The Exchanger Manufacturer shall calculate the static effects of loads due to wind and the effects due to earthquake loads acting on the exchanger in accordance with the requirements of this specification.

15.2 The data sheet shall specify the wind speed, earthquake zone, and soil coefficient corresponding to the site location.

15.3 Exchangers shall be designed for wind and earthquake loads in accordance with ASCE 7.

15.4 With reference to ASCE 7, the wind Category Classification to be used in the calculation of wind loads shall be Category III, and the Seismic Hazard Exposure Group to be used in the calculation of earthquake loads shall be Group III.

Revision Summary 6 September 2008 Major revision.



32-SAMSS-019

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