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1、TECHNICAL SPECIFICATION SHELL AND TUBE HEAT EXCHANGERS (AMENDMENTS/SUPPLEMENTS TO TEMA STANDARDS) DEP 31.21.01.30-Gen. July 1996 (DEP Circular 04/97 has been incorporated) DESIGN AND ENGINEERING PRACTICE This document is confidential. Neither the whole nor any part of this document may be disclosed
2、to any third party without the prior written consent of Shell International Oil Products B.V. and Shell International Exploration and Production B.V., The Hague, The Netherlands. The copyright of this document is vested in these companies. All rights reserved. Neither the whole nor any part of this
3、document may be reproduced, stored in any retrieval system or transmitted in any form or by any means (electronic, mechanical, reprographic, recording or otherwise) without the prior written consent of the copyright owners. PREFACE DEP (Design and Engineering Practice) publications reflect the views
4、, at the time of publication, of: Shell International Oil Products B.V. (SIOP) and Shell International Exploration and Production B.V. (SIEP) and Shell International Chemicals B.V. (SIC) The Hague, The Netherlands, and other Service Companies. They are based on the experience acquired during their i
5、nvolvement with the design, construction, operation and maintenance of processing units and facilities, and they are supplemented with the experience of Group Operating companies. Where appropriate they are based on, or reference is made to, national and international standards and codes of practice
6、. The objective is to set the recommended standard for good design and engineering practice applied by Group companies operating an oil refinery, gas handling installation, chemical plant, oil and gas production facility, or any other such facility, and thereby to achieve maximum technical and econo
7、mic benefit from standardization. The information set forth in these publications is provided to users for their consideration and decision to implement. This is of particular importance where DEPs may not cover every requirement or diversity of condition at each locality. The system of DEPs is expe
8、cted to be sufficiently flexible to allow individual operating companies to adapt the information set forth in DEPs to their own environment and requirements. When Contractors or Manufacturers/Suppliers use DEPs they shall be solely responsible for the quality of work and the attainment of the requi
9、red design and engineering standards. In particular, for those requirements not specifically covered, the Principal will expect them to follow those design and engineering practices which will achieve the same level of integrity as reflected in the DEPs. If in doubt, the Contractor or Manufacturer/S
10、upplier shall, without detracting from his own responsibility, consult the Principal or its technical advisor. The right to use DEPs is granted by SIOP, SIEP or SIC, in most cases under Service Agreements primarily with companies of the Royal Dutch/Shell Group and other companies receiving technical
11、 advice and services from SIOP, SIEP or SIC. Consequently, three categories of users of DEPs can be distinguished: 1)Operating companies having a Service Agreement with SIOP, SIEP, SIC or other Service Company. The use of DEPs by these Operating companies is subject in all respects to the terms and
12、conditions of the relevant Service Agreement. 2)Other parties who are authorized to use DEPs subject to appropriate contractual arrangements. 3)Contractors/subcontractors and Manufacturers/Suppliers under a contract with users referred to under 1) or 2) which requires that tenders for projects, mate
13、rials supplied or - generally - work performed on behalf of the said users comply with the relevant standards. Subject to any particular terms and conditions as may be set forth in specific agreements with users, SIOP, SIEP and SIC disclaim any liability of whatsoever nature for any damage (includin
14、g injury or death) suffered by any company or person whomsoever as a result of or in connection with the use, application or implementation of any DEP, combination of DEPs or any part thereof. The benefit of this disclaimer shall inure in all respects to SIOP, SIEP, SIC and/or any company affiliated
15、 to these companies that may issue DEPs or require the use of DEPs. Without prejudice to any specific terms in respect of confidentiality under relevant contractual arrangements, DEPs shall not, without the prior written consent of SIOP and SIEP, be disclosed by users to any company or person whomso
16、ever and the DEPs shall be used exclusively for the purpose for which they have been provided to the user. They shall be returned after use, including any copies which shall only be made by users with the express prior written consent of SIOP and SIEP. The copyright of DEPs vests in SIOP and SIEP. U
17、sers shall arrange for DEPs to be held in safe custody and SIOP or SIEP may at any time require information satisfactory to them in order to ascertain how users implement this requirement. All administrative queries should be directed to the DEP Administrator in SIOP. NOTE: In addition to DEP public
18、ations there are Standard Specifications and Draft DEPs for Development (DDDs). DDDs generally introduce new procedures or techniques that will probably need updating as further experience develops during their use. The above requirements for distribution and use of DEPs are also applicable to Stand
19、ard Specifications and DDDs. Standard Specifications and DDDs will gradually be replaced by DEPs. DEP 31.21.01.30-Gen. July 1996 Page 2 TABLE OF CONTENTS PART IINTRODUCTION.6 1.1SCOPE 6 1.2DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS6 1.3DEFINITIONS 6 1.4CROSS-REFERENCES6 PART IIGENERAL
20、INFORMATION AND DEFINITIONS7 2.1DESIGN RULES7 2.2PRESSURE VESSEL CODE.7 2.3MATERIALS OF CONSTRUCTION8 2.4CORROSION PROTECTION8 2.5UNITS OF MEASUREMENT.8 2.6END FLANGES. 8 2.7EQUIPMENT NUMBERING8 PART IIIGENERAL REQUIREMENTS.9 3.1SELECTION OF TYPE9 3.1.1SHELL SELECTION9 3.1.2FRONT END AND REAR END SE
21、LECTION9 3.2WATER-COOLED HEAT EXCHANGERS10 3.3HORIZONTAL AND VERTICAL EXCHANGERS10 3.4DOUBLE-PIPE AND MULTI-TUBE HEAT EXCHANGERS10 3.5STEAM SURFACE CONDENSERS11 3.6ELECTRIC HEATERS.11 PART IVAMENDMENTS/SUPPLEMENTS TO TEMA STANDARDS12 SECTION 1 HEAT EXCHANGER NOMENCLATURE12 N-1.2TYPE 12 N-1.3TYPICAL
22、EXAMPLES.12 SECTION 2 HEAT EXCHANGER FABRICATION TOLERANCES13 F-3TUBESHEETS, PARTITIONS, COVERS AND FLANGES.13 SECTION 3 GENERAL FABRICATION AND PERFORMANCE INFORMATION14 G-2.1MANUFACTURERS INSPECTION14 G-3.3ASSET NUMBER PLATE (new clause)14 G-4.1DRAWINGS FOR APPROVAL AND CHANGE.14 G-4.2DRAWINGS FOR
23、 RECORD.14 G-5.1GENERAL 14 G-5.21THERMAL PERFORMANCE TEST14 G-6.2DRAINING. 14 G-6.4THREADED CONNECTION PROTECTION.15 G-7.11HORIZONTAL UNITS15 G-7.12VERTICAL UNITS.15 G-7.2LIFTING DEVICES15 SECTION 4 INSTALLATION, OPERATION AND MAINTENANCE17 E-2.12FOUNDATIONS17 E-2.13FOUNDATION BOLTS17 E-2.32TEST CON
24、NECTIONS17 E-3.25RECOMMENDED BOLT TIGHTENING PROCEDURE17 E-4.14TEST RING AND TEST FLANGE (new clause)17 E-4.2TUBE BUNDLE REMOVAL AND HANDLING.17 E-4.31CLEANING METHODS.18 E-4.5GASKET REPLACEMENT18 E-4.6SPARE AND REPLACEMENT PARTS.18 E-4.7PRESERVATION OF EQUIPMENT (new clause)18 SECTION 5 MECHANICAL
25、STANDARDS TEMA CLASS R C B.19 RCB-1.21DESIGN PRESSURE19 RCB-1.42DESIGN TEMPERATURE OF HEAT EXCHANGER PARTS.19 RC-1.54LINING, CLADDING AND WELD OVERLAYS (new clause)19 RCB-1.62EXTERNAL PACKED JOINTS19 RCB-2.1TUBE LENGTH.19 RCB-2.21BARE TUBES20 DEP 31.21.01.30-Gen. July 1996 Page 3 RC-2.211SELECTION O
26、F BARE TUBE DIAMETER (new clause)20 RCB-2.22CIRCUMFERENTIALLY-FINNED TUBES21 RC-2.23LONGITUDINALLY-FINNED TUBES (new clause)21 RCB-2.3U-TUBES. 21 RCB-2.31U-BEND REQUIREMENTS.21 RCB-2.321CENTER-TO-CENTER DIMENSION21 RCB-2.33HEAT TREATMENT21 RCB-2.42TRIANGULAR PATTERN22 R-2.5TUBE PITCH.22 RC-2.6TUBE P
27、ITCH OVER PASS PARTITION LANE (new clause).22 RC-2.7TUBE LAY-OUT (new clause).22 RC-2.8STOVING LACQUER (new clause).22 RCB-3.11SHELL DIAMETERS.22 RCB-3.2SHELL COVER THICKNESS23 RCB-4.1TYPE OF TRANSVERSE BAFFLES.23 *RCB-4.3TRANSVERSE BAFFLE AND SUPPORT CLEARANCE.23 *RCB-4.41TRANSVERSE BAFFLES AND SUP
28、PORT PLATES.23 R-4.42LONGITUDINAL BAFFLES.23 RCB-4.52MAXIMUM SPACING23 RCB-4.61SHELL SIDE IMPINGEMENT PROTECTION REQUIREMENTS23 RCB-4.63TUBE SIDE 25 *RCB-4.7TIE RODS AND SPACERS.25 R-4.71NUMBER AND SIZE OF TIE RODS.25 RCB-4.8SEALING DEVICES26 RC-4.9SLIDING STRIPS (new clause).26 RCB-5FLOATING END CO
29、NSTRUCTION26 RCB-5.15FLOATING HEAD NOZZLES27 RCB-5.17FLOATING HEAD EXPANSION JOINT (new clause) 27 RCB-5.2OUTSIDE PACKED FLOATING HEADS (Type P) .27 RCB-5.3EXTERNALLY SEALED FLOATING TUBESHEET (Type W)27 RCB-6GASKETS 27 *RCB-6.1TYPE OF GASKETS.27 R-6.2GASKET MATERIALS.28 RC-6.31GASKET MINIMUM WIDTH2
30、9 R-6.32GASKET CONTACT SURFACE.29 RCB-7TUBESHEETS.29 RCB-7.13REQUIRED EFFECTIVE TUBESHEET THICKNESS30 RCB-7.141OUTSIDE PACKED FLOATING HEAD (Type P)30 RCB-7.142PACKED FLOATING TUBESHEET WITH LANTERN RING (Type W)30 RB-7.44TUBE HOLE GROOVING.30 *RCB-7.52WELDED TUBE-TO-TUBESHEET JOINTS.30 RCB-7.521SEA
31、L WELDED JOINTS.30 RCB-7.522STRENGTH WELDED JOINTS30 RCB-7.53EXPLOSIVE BONDED TUBE-TO-TUBESHEET JOINTS30 RB-7.8CLAD AND FACED TUBESHEETS30 RCB-8FLEXIBLE SHELL ELEMENTS.31 RCB-9CHANNELS, COVERS AND BONNETS.31 *RCB-9.13PASS PARTITION PLATES31 RCB-9.132PASS PARTITION PLATE FORMULA31 RCB-9.133PASS PARTI
32、TION WELD SIZE31 R-9.135ALIGNMENT (new clause)31 RCB-10.1NOZZLE CONSTRUCTION32 RCB-10.31VENT AND DRAIN CONNECTIONS.32 RC-10.32PRESSURE GAUGE CONNECTIONS.32 RB-10.33THERMOMETER CONNECTIONS.32 RC-10.34CLEANING CONNECTIONS (new clause).32 RC-10.35SAFETY/RELIEF VALVE CONNECTIONS (new clause).32 RCB-11EN
33、D FLANGES AND BOLTING32 RCB-11.24BOLT ORIENTATION33 SECTION 6 FLOW INDUCED VIBRATION34 V-1SCOPE AND GENERAL.34 V-2.5ACOUSTIC VIBRATION34 DEP 31.21.01.30-Gen. July 1996 Page 4 SECTION 7 THERMAL RELATIONS35 T-1.1SCOPE 35 T-1.6DETAILED INSTRUCTIONS TO COMPUTER PROGRAMS (new clause) .35 T-1.61TUBE VIBRA
34、TIONS (new sub-clause)35 T-1.62PRESSURE DROP (new sub-clause).35 T-1.63TUBE LAYOUT/SHELL DIAMETER (new sub-clause).36 T-1.64BAFFLE SPACING OF END COMPARTMENTS (new sub-clause).36 T-1.65KETTLE-TYPE REBOILERS AND EVAPORATORS (new sub-clause).36 T-1.66TURBULATORS (new sub-clause).37 T-1.67MASS ESTIMATE
35、 (new sub-clause).37 SECTION 10RECOMMENDED GOOD PRACTICE38 RGP-RCB-2 PLUGGING TUBES IN TUBE BUNDLES.38 RGP-RCB-3.13 MINIMUM SHELL THICKNESS38 RGP-RCB-4.3 TRANSVERSE BAFFLE AND SUPPORT CLEARANCE.38 RGP-RCB-4.41 TRANSVERSE BAFFLES AND SUPPORT PLATES.38 RGP-RCB-4.71 NUMBER AND SIZE OF TIE RODS.38 RGP-R
36、C-4.9 MINIMUM SLIDING STRIP SIZE (new clause).39 RGP-T-2.4DESIGN FOULING RESISTANCES.39 PART VREFERENCES40 APPENDICES APPENDIX ASTANDARD FORMS, REQUISITION AND DATA/REQUISITION SHEETS.44 APPENDIX BFLOWCHART FOR DESIGN PRESSURE LOW PRESSURE SIDE45 DEP 31.21.01.30-Gen. July 1996 Page 5 PART IINTRODUCT
37、ION 1.1SCOPE This DEP specifies requirements and gives recommendations forthe design and construction of shell and tube heat exchangers having a bare tube surface area of greater than 0.5 m2. Part IV of this DEP has been written in the form of amendments and supplements to “STANDARDS OF THE TUBULAR
38、EXCHANGER MANUFACTURERS ASSOCIATION“, Seventh Edition, 1988, and its 1990 and 1991 ERRATA, known as TEMA Standards. This DEP is a revision of the DEP of the same number dated February 1991. 1.2DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS Unless otherwise authorised by SIOP and SIEP, the
39、distribution of this DEP is confined to companies forming part of the Royal Dutch/Shell Group or managed by a Group company, and to Contractors and Manufacturers/Suppliers nominated by them (i.e. the distribution code is “F“ as defined in DEP 00.00.05.05-Gen.). This DEP is intended for use in oil re
40、fineries, chemical plants, gas plants, exploration and production facilities and supply/marketing installations. If national and/or local regulations exist in which some of the requirements are more stringent than in this DEP, the Contractor shall determine by careful scrutiny which of the requireme
41、nts are the more stringent and which combination of requirements will be acceptable as regards safety, economic and legal aspects. In all cases the Contractor shall inform the Principal of any deviation from the requirements of this document which is considered to be necessary in order to comply wit
42、h national and/or local regulations. The Principal may then negotiate with the authorities concerned with the object of obtaining agreement to follow this DEP as closely as possible. 1.3DEFINITIONS The Contractor is the party which carries out all or part of the design, engineering, procurement, con
43、struction, commissioning or management of a project, or operation or maintenance of a facility. The Principal may undertake all or part of the duties of the Contractor. The Manufacturer/Supplier is the party which manufactures or supplies equipment and services to perform the duties specified by the
44、 Contractor. The Principal is the party which initiates the project and ultimately pays for its design and construction. The Principal will generally specify the technical requirements. The Principal may also include an agent or consultant authorised to act for, and on behalf of, the Principal. The
45、word shall indicates a requirement. The word should indicates a recommendation. 1.4CROSS-REFERENCES Where cross-references to other parts of this DEP are made, the referenced section number is shown in brackets. Other documents referenced by this DEP are listed in (Part V). DEP 31.21.01.30-Gen. July
46、 1996 Page 6 PART II GENERAL INFORMATION AND DEFINITIONS 2.1DESIGN RULES The design, engineering and fabrication of shell and tube heat exchangers with a bare tube surface area of greater than 0.5 m2shall be based on TEMA Standards, Seventh Edition, 1988, and its 1990 and 1991 ERRATA and this DEP. F
47、or clarity and ease of reference, the section, paragraph and clause numbering of TEMA Standards has been followed throughout Part IV of this DEP. The paragraphs/clauses in the TEMA Standards not referred to in this DEP remain valid, except that Section 8 of TEMA Standards (“Physical Properties of Fl
48、uids“) is not applicable to this DEP. Except for the requirements regarding national and/or local regulations in Part I, other deviations from this DEP or the TEMA Standards are not permitted without the prior written approval of the Principal. Such approval shall be valid only for a specific case,
49、and shall not be construed as having general validity for wider application. In case of conflict between documents relating to an order, the following hierarchy shall apply: 1.the purchase order 2.this DEP In the event of such conflict, the Principal shall be consulted in writing. When a heat exchanger is specified during the Project Specification or the detailed engineering phase, the applicable standard forms, requisition and data/requisition sheets listed in Appendix A of this DEP shall be used. Data/requisition sheet DEP 31.21.00.93- Gen., sheet 1, shall be completed in accordance with th