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DEP 31.21.01.12_Shell and Tube Heat Exchangers; Selection and Application

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    DEP SPECIFICATION SHELL AND TUBE HEAT EXCHANGERS; SELECTION AND APPLICATION DEP 31.21.01.12-Gen. February 2012 (Amendment A01 has been incorporated – February 2013) ECCN EAR99 DESIGN AND ENGINEERING PRACTICE DEM1 © 2012 Shell Group of companies  All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, published or transmitted, in any form or by any means, without the prior written permission of the copyright owner or Shell Global Solutions International BV. This document contains information that is classified as EAR99 and, as a consequence, can neither be exported nor re-exported to any country which is under an embargo of the U.S. government pursuant to Part 746 of the Export Administration Regulations (15 C.FR. Part 746) nor can be made available to any national of such country. In addition, the information in this document cannot be exported nor re-exported to an end-user or for an end-use that is prohibited by Part 744 of the Export  Administration Regulations (15 C.F.R. Part 744).      C  o  p  y  r   i  g   h   t   S   h  e   l   l   G  r  o  u  p  o   f   C  o  m  p  a  n   i  e  s .   N  o  r  e  p  r  o   d  u  c   t   i  o  n  o  r  n  e   t  w  o  r   k   i  n  g  p  e  r  m   i   t   t  e   d  w   i   t   h  o  u   t   l   i  c  e  n  s  e   f  r  o  m    S   h  e   l   l .   N  o   t   f  o  r  r  e  s  a   l  e This document has been supplied under license by Shell to:Chiyoda Philippines Corporation roamallari@cph.chiyoda.co.jp 04/03/2013 05:45:47  ECCN EAR99 DEP 31.21.01.12-Gen. February 2012 Page 2 PREFACE DEP (Design and Engineering Practice) publications reflect the views, at the time of publication, of Shell Global Solutions International B.V. (Shell GSI) and, in some cases, of other Shell Companies. These views are based on the experience acquired during involvement with the design, construction, operation and maintenance of processing units and facilities. Where deemed appropriate DEPs are based on, or reference international, regional, national and industry standards. The objective is to set the standard for good design and engineering practice to be applied by Shell companies in oil and gas production, oil refining, gas handling, gasification, chemical processing, or any other such facility, and thereby to help achieve maximum technical and economic benefit from standardization. The information set forth in these publications is provided to Shell companies 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 expected to be sufficiently flexible to allow individual Operating Units 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 such use, including the quality of their work and the attainment of the required design and engineering standards. In particular, for those requirements not specifically covered, the Principal will typically expect them to follow those design and engineering practices that will achieve at least the same level of integrity as reflected in the DEPs. If in doubt, the Contractor or Manufacturer/Supplier shall, without detracting from his own responsbility, consult the Principal. The right to obtain and to use DEPs is restricted, and is typically granted by Shell GSI (and in some cases by other Shell Companies) under a Service Agreement or a License Agreement. This right is granted primarily to Shell companies and other companies receiving technical advice and services from Shell GSI or another Shell Company. Consequently, three categories of users of DEPs can be distinguished: 1) Operating Units having a Service Agreement with Shell GSI or another Shell Company. The use of DEPs by these Operating Units is subject in all respects to the terms and conditions of the relevant Service Agreement. 2) Other parties who are authorised to use DEPs subject to appropriate contractual arrangements (whether as part of a Service Agreement or otherwise). 3) Contractors/subcontractors and Manufacturers/Suppliers under a contract with users referred to under 1) or 2) which requires that tenders for projects, materials 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, Shell GSI disclaims any liability of whatsoever nature for any damage (including 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, even if it is wholly or partly caused by negligence on the part of Shell GSI or other Shell Company. The benefit of this disclaimer shall inure in all respects to Shell GSI and/or any Shell Company, or companies affiliated to these companies, that may issue DEPs or advise 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 Shell GSI, be disclosed by users to any company or person whomsoever 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 Shell GSI. The copyright of DEPs vests in Shell Group of companies. Users shall arrange for DEPs to be held in safe custody and Shell GSI 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 Shell GSI. This document has been supplied under license by Shell to:Chiyoda Philippines Corporation roamallari@cph.chiyoda.co.jp 04/03/2013 05:45:47  ECCN EAR99 DEP 31.21.01.12-Gen. February 2012 Page 3 TABLE OF CONTENTS PART I   INTRODUCTION ........................................................................................................ 4   1.1   SCOPE ........................................................................................................................ 4   1.2   DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS ......... 4   1.3   DEFINITIONS ............................................................................................................. 4   1.4   CROSS-REFERENCES ............................................................................................. 5   1.5   SUMMARY OF CHANGES ......................................................................................... 5   1.6   COMMENTS ON THIS DEP ....................................................................................... 6   1.7   DUAL UNITS ............................................................................................................... 6   PART II   THERMAL AND HYDRAULIC DESIGN AND SPECIFICATION ............................... 7   2.1   INTRODUCTION ........................................................................................................ 7   2.2   PROCESS SPECIFICATION ...................................................................................... 8   2.3   GENERAL THERMAL DESIGN ................................................................................ 10   2.4   FLUID ALLOCATION ................................................................................................ 16   2.5   SHELL TYPE SELECTION ....................................................................................... 16   2.6   FRONT AND REAR HEAD TYPE SELECTION ....................................................... 18   2.7   BAFFLE, TUBE BUNDLE AND TUBE LAYOUT SELECTION AND SPECIFICATION ...................................................................................................... 20   2.8   NOZZLE, SHELL AND BUNDLE ENTRANCE AND EXIT AREAS AND IMPINGEMENT DEVICE SPECIFICATION ............................................................. 26   2.9    ACOUSTIC AND TUBE VIBRATION ANALYSIS AND DESIGN ............................. 29   2.10   ENHANCED HEAT TRANSFER SURFACE AND DEVICE SPECIFICATION ........ 31   2.11   EMBAFFLE® EXCHANGER SELECTION AND SPECIFICATION.......................... 33   2.12   KETTLE REBOILERS, STEAM GENERATORS AND REFRIGERANT CHILLERS................................................................................................................. 35   2.13   THERMOSIPHON REBOILERS ............................................................................... 38   2.14   SULPHUR PLANT EXCHANGERS .......................................................................... 40   2.15   CATALYST FINES SLURRY SERVICE EXCHANGERS ......................................... 43   2.16   EXCHANGERS REQUIRING INTERMITTENT OR CONTINUOUS WASH WATER INJECTION ................................................................................................. 44   2.17   HOT OIL HEAT TRANSFER MEDIUM EXCHANGERS .......................................... 46   2.18   SOUR AND WET H 2 S SERVICE EXCHANGERS ................................................... 46   2.19   COOLING WATER SERVICE EXCHANGERS ........................................................ 47   2.20   STEAM SERVICE EXCHANGERS........................................................................... 49   2.21   HAIRPIN HEAT EXCHANGERS............................................................................... 50   2.22   HYDROPROCESSING FEED/EFFLUENT HEAT EXCHANGERS .......................... 51   2.23   CATALYTIC REFORMING FEED/EFFLUENT EXCHANGERS (TEXAS TOWERS) ................................................................................................................. 51   2.24   SINGLE TUBE PASS REFRIGERANT CHILLERS IN LIQUIFIED NATURAL GAS PLANTS............................................................................................................ 54   PART III   MECHANICAL DESIGN CONSIDERATIONS ......................................................... 57   3.1   INTRODUCTION ...................................................................................................... 57   3.2   DESIGN PRESSURE AND TEMPERATURE .......................................................... 57   3.3   MATERIALS OF CONSTRUCTION.......................................................................... 58   3.4   EXPANSION JOINTS ............................................................................................... 60   3.5   BOLTING REQUIREMENTS .................................................................................... 61   3.6   GASKET SELECTION .............................................................................................. 61   3.7   TUBE-TO-TUBESHEET JOINTS.............................................................................. 64   3.8   U-BEND HEAT TREATMENT ................................................................................... 65   3.9   HIGH PRESSURE CLOSURE SELECTION ............................................................ 66   PART IV   TECHNICAL SPECIFICATIONS .............................................................................. 70   4.1   PREPARATION OF INQUIRIES FOR SHELL AND TUBE HEAT EXCHANGERS ......................................................................................................... 70   PART V   REFERENCES ......................................................................................................... 73   This document has been supplied under license by Shell to:Chiyoda Philippines Corporation roamallari@cph.chiyoda.co.jp 04/03/2013 05:45:47  ECCN EAR99 DEP 31.21.01.12-Gen. February 2012 Page 4 PART I INTRODUCTION 1.1 SCOPE This new DEP specifies requirements and gives recommendations for shell-and-tube heat exchangers in the refining, chemical, petro-chemical, and natural gas processing industry, for which ISO 16812 and DEP 31.21.01.30-Gen. are to be applied. This DEP is not intended to be used for small heat exchangers [i.e., having a bare tube surface area of less than 0.5 m 2  (5.4 ft 2 )] or for pressurized water-cooled (or glycol-cooled) seal-oil coolers, lube-oil coolers, jacket water coolers for rotating equipment, vacuum-operated steam surface condensers, feed water heaters, or alkylation contactor bundles of proprietary design. This DEP was created to specify the thermal and mechanical design considerations for shell and tube heat exchangers and correspondingly assist the design team/designer of either the Principal or the Contractor. Specifications are provided to direct selection/design of cost effective heat exchangers consistent with the service conditions, intended design life, and criticality of the application. This DEP premises user familiarity with DEP 31.21.01.30-Gen. and ISO 16812, which are primarily intended for use by the Manufacturer/Supplier. This DEP covers the general specification requirements of the shell and tube heat exchanger data/requisition sheet with design notes and the general information typically required for a bid requisition. This DEP, therefore, is not normally intended for shell and tube heat exchanger Manufacturers/Suppliers. This DEP contains mandatory requirements to mitigate process safety risks in accordance with Design Engineering Manual DEM 1 – Application of Technical Standards. 1.2 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS Unless otherwise authorised by Shell GSI, the distribution of this DEP is confined to Shell companies and, where necessary, to Contractors and Manufacturers/Suppliers nominated by them. Any authorized access to DEPs does not for that reason constitute an authorization to any documents, data or information to which the DEPs may refer. This DEP is intended for use in facilities related to oil and gas production, gas handling, oil refining, chemical processing, gasification, distribution and supply/marketing. This DEP may also be applied in other similar facilities. When DEPs are applied, a Management of Change (MOC) process shall be implemented; this is of particular importance when existing facilities are to be modified. If national and/or local regulations exist in which some of the requirements could be more stringent than in this DEP, the Contractor shall determine by careful scrutiny which of the requirements are the more stringent and which combination of requirements will be acceptable with regards to the safety, environmental, economic and legal aspects. In all cases, the Contractor shall inform the Principal of any deviation from the requirements of this DEP which is considered to be necessary in order to comply with national and/or local regulations. The Principal may then negotiate with the Authorities concerned, the objective being to obtain agreement to follow this DEP as closely as possible. 1.3 DEFINITIONS 1.3.1 General definitions The Contractor   is the party that carries out all or part of the design, engineering, procurement, construction, commissioning or management of a project or operation of a facility. The Principal may undertake all or part of the duties of the Contractor. The Manufacturer/Supplier   is the party that manufactures or supplies equipment and services to perform the duties specified by the Contractor. This document has been supplied under license by Shell to:Chiyoda Philippines Corporation roamallari@cph.chiyoda.co.jp 04/03/2013 05:45:47
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