INTRODUCTION (a) The following information provides guidance to Code users for submitting technical inquiries to the applicable Boiler and Pressure Vessel (BPV) Standards Committee (hereinafter referred to as the Committee). See the guidelines on approval of new materials under the ASME Boiler and Pressure Vessel Code in Section II, Part D for requirements for requests that involve adding new materials to the Code. See the guidelines on approval of new welding and brazing materials in Section II, Part C for requirements for requests that involve adding new welding and brazing materials (“consumables”) to the Code. Technical inquiries can include requests for revisions or additions to the Code requirements, requests for Code Cases, or requests for Code Interpretations, as described below: (1) Code Revisions. Code revisions are considered to accommodate technological developments, to address administrative requirements, to incorporate Code Cases, or to clarify Code intent. (2) Code Cases. Code Cases represent alternatives or additions to existing Code requirements. Code Cases are written as a Question and Reply, and are usually intended to be incorporated into the Code at a later date. When used, Code Cases prescribe mandatory requirements in the same sense as the text of the Code. However, users are cautioned that not all regulators, jurisdictions, or Owners automatically accept Code Cases. The most common applications for Code Cases are as follows: (a) to permit early implementation of an approved Code revision based on an urgent need (b) to permit use of a new material for Code construction (c) to gain experience with new materials or alternative requirements prior to incorporation directly into the Code (3) Code Interpretations (a) Code Interpretations provide clarification of the meaning of existing requirements in the Code and are presented in Inquiry and Reply format. Interpretations do not introduce new requirements. (b) If existing Code text does not fully convey the meaning that was intended, or conveys conflicting requirements, and revision of the requirements is required to support the Interpretation, an Intent Interpretation will be issued in parallel with a revision to the Code. (b) Code requirements, Code Cases, and Code Interpretations established by the Committee are not to be considered as approving, recommending, certifying, or endorsing any proprietary or specific design, or as limiting in any way the freedom of manufacturers, constructors, or Owners to choose any method of design or any form of construction that conforms to the Code requirements. (c) Inquiries that do not comply with the following guidance or that do not provide sufficient information for the Committee’s full understanding may result in the request being returned to the Inquirer with no action.
ASME B PVC.VI I I 1-2019 SECTION VIII R u l e s f o r C on stru cti o n o f P re ssu re Ves s els An International Code Div ision Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 2019 ASME Boiler and Pressure Vessel Code `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Markings such as “ASME,” “ASME Standard,” or any other marking including “ASME,” ASME logos, or the ASME Single Certification Mark shall not be used on any item that is not constructed in accordance with all of the applicable requirements of the Code or Standard. Use of ASME’s name or logos or of the ASME Single Certification Mark requires formal ASME certification; if no certification program is available, such ASME markings may not be used. (For Certification and Accreditation Programs, see https://www.asme.org/shop/certification‐accreditation.) Items produced by parties not formally possessing an ASME Certificate may not be described, either explicitly or implicitly, as ASME certified or approved in any code forms or other document. Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT AN INTERNATIONAL CODE 2019 ASME Boiler & Pressure Vessel Code July 1, 2019 `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 2019 Edition VIII RULES FOR CONSTRUCTION OF PRESSURE VESSELS Division ASME Boiler and Pressure Vessel Committee on Pressure Vessels Two Park Avenue • New York, NY • 10016 USA Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT Date of Issuance: July 1, 2019 This international code or standard was developed under procedures accredited as meeting the criteria for American National Standards and it is an American National Standard The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large ASME does not “approve," "certify," “rate,” or “endorse” any item, construction, proprietary device, or activity ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals The endnotes and preamble in this document (if any) are part of this American National Standard ASME Collective Membership Mark ASME Single Certification Mark "ASME" and the above ASME symbols are registered trademarks of The American Society of Mechanical Engineers No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher Library of Congress Catalog Card Number: 56-3934 Printed in the United States of America Adopted by the Council of The American Society of Mechanical Engineers, 1914; latest edition 2019 The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990 Copyright © 2019 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT TABLE OF CONTENTS `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - List of Sections Foreword Statement of Policy on the Use of the ASME Single Certification Mark and Code Authorization in Advertising Statement of Policy on the Use of ASME Marking to Identify Manufactured Items Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees Personnel Summary of Changes List of Changes in Record Number Order Cross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code Introduction U-1 Scope U-2 General U-3 Standards Referenced by This Division U-4 Units of Measurement U-5 Tolerances Subsection A General Requirements Part UG General Requirements for All Methods of Construction and All Materials Scope Materials General Plate Forgings Castings Pipe and Tubes Welding Materials Material Identified With or Produced to a Specification Not Permitted by This Division, and Material Not Fully Identified Prefabricated or Preformed Pressure Parts Furnished Without a Certification Mark Bolts and Studs Nuts and Washers Rods and Bars Product Specification Design General Methods of Fabrication in Combination Materials in Combination Special Constructions Design Temperature Design Pressure Loadings Maximum Allowable Stress Values Castings Corrosion Linings Thickness of Shells Under Internal Pressure Thickness of Shells and Tubes Under External Pressure UG-1 UG-4 UG-5 UG-6 UG-7 UG-8 UG-9 UG-10 UG-11 UG-12 UG-13 UG-14 UG-15 UG-16 UG-17 UG-18 UG-19 UG-20 UG-21 UG-22 UG-23 UG-24 UG-25 UG-26 UG-27 UG-28 iii Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT xxxiii xxxv xxxvii xxxvii xxxviii xli lxiii lxxi lxxv 1 4 7 7 8 8 9 10 12 12 12 13 13 13 14 14 14 15 16 16 16 17 18 19 19 19 UG-29 UG-30 UG-31 UG-32 UG-33 UG-34 UG-35 UG-36 UG-37 UG-38 UG-39 UG-40 UG-41 UG-42 UG-43 UG-44 UG-45 UG-46 UG-47 UG-48 UG-49 UG-50 UG-53 UG-54 UG-55 UG-75 UG-76 UG-77 UG-78 UG-79 UG-80 UG-81 UG-82 UG-83 UG-84 UG-85 UG-90 UG-91 UG-92 UG-93 UG-94 UG-95 UG-96 UG-97 UG-98 UG-99 UG-100 UG-101 Stiffening Rings for Cylindrical Shells Under External Pressure Attachment of Stiffening Rings Tubes, and Pipe When Used as Tubes or Shells Formed Heads, and Sections, Pressure on Concave Side Formed Heads, Pressure on Convex Side Unstayed Flat Heads and Covers Other Types of Closures Openings and Reinforcements Openings in Pressure Vessels Reinforcement Required for Openings in Shells and Formed Heads Flued Openings in Shells and Formed Heads Reinforcement Required for Openings in Flat Heads and Covers Limits of Reinforcement Strength of Reinforcement Reinforcement of Multiple Openings Methods of Attachment of Pipe and Nozzle Necks to Vessel Walls Flanges and Pipe Fittings Nozzle Neck Thickness Inspection Openings Braced and Stayed Surfaces Braced and Stayed Surfaces Staybolts Location of Staybolts Dimensions of Staybolts Ligaments Ligaments Supports Lugs for Platforms, Ladders, and Other Attachments to Vessel Walls Fabrication General Cutting Plates and Other Stock Material Identification (see UG-85) Repair of Defects in Materials Forming Pressure Parts Permissible Out‐of‐Roundness of Cylindrical, Conical, and Spherical Shells Tolerance for Formed Heads Lugs and Fitting Attachments Holes for Screw Stays Charpy Impact Tests Heat Treatment Inspection and Tests General The Inspector Access for Inspector Inspection of Materials Marking on Materials Examination of Surfaces During Fabrication Dimensional Check of Component Parts Inspection During Fabrication Maximum Allowable Working Pressure Standard Hydrostatic Test Pneumatic Test (see UW-50) Proof Tests to Establish Maximum Allowable Working Pressure iv Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT 23 27 27 27 30 33 37 38 38 41 44 45 47 47 50 50 54 55 55 57 57 58 58 58 58 58 60 60 60 60 60 63 63 63 64 66 66 66 66 73 73 73 74 74 75 76 76 76 76 76 77 78 79 UG-102 UG-103 UG-115 UG-116 UG-117 UG-118 UG-119 UG-120 UG-125 UG-126 UG-127 UG-128 UG-129 UG-130 UG-131 UG-132 UG-133 UG-134 UG-135 UG-136 UG-137 UG-138 UG-140 Subsection B Part UW UW-1 UW-2 UW-3 UW-5 UW-6 `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - UW-8 UW-9 UW-10 UW-11 UW-12 UW-13 UW-14 UW-15 UW-16 UW-17 UW-18 UW-19 UW-20 UW-21 UW-26 UW-27 UW-28 Test Gages Nondestructive Testing Marking and Reports General Required Marking Certificates of Authorization and Certification Marks Methods of Marking Nameplates Data Reports Overpressure Protection General Pressure Relief Valves Nonreclosing Pressure Relief Devices Liquid Pressure Relief Valves Marking Certification Mark Certification of Capacity of Pressure Relief Devices Certification of Capacity of Pressure Relief Valves in Combination With Nonreclosing Pressure Relief Devices Determination of Pressure-Relieving Requirements Pressure Settings and Performance Requirements Installation Minimum Requirements for Pressure Relief Valves Minimum Requirements for Rupture Disk Devices Minimum Requirements for Pin Devices Overpressure Protection by System Design 101 102 102 103 103 108 109 112 Requirements Pertaining to Methods of Fabrication of Pressure Vessels 114 Requirements for Pressure Vessels Fabricated by Welding General Scope Service Restrictions Welded Joint Category Materials General Nonmandatory Guidelines for Welding Material Selections Design General Design of Welded Joints Postweld Heat Treatment Radiographic and Ultrasonic Examination Joint Efficiencies Attachment Details Openings in or Adjacent to Welds Welded Connections Minimum Requirements for Attachment Welds at Openings Plug Welds Fillet Welds Welded Stayed Construction Tube‐to‐Tubesheet Welds ASME B16.5 Socket and Slip-on Flange Welds Fabrication General Welding Processes Qualification of Welding Procedure 114 114 114 114 115 116 116 117 117 117 117 119 119 120 120 129 131 131 141 141 141 143 145 145 145 146 146 v Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT 84 84 84 84 84 86 87 88 89 91 91 92 92 94 94 97 97 UW-29 UW-30 UW-31 UW-32 UW-33 UW-34 UW-35 UW-36 UW-37 UW-38 UW-39 UW-40 UW-41 UW-42 UW-46 UW-47 UW-48 UW-49 UW-50 UW-51 UW-52 UW-53 UW-54 UW-60 Part UF UF-1 UF-5 UF-6 UF-7 UF-12 UF-13 UF-25 `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - UF-26 UF-27 UF-28 UF-29 UF-30 UF-31 UF-32 UF-37 UF-38 UF-43 UF-45 UF-46 UF-47 UF-52 UF-53 Tests of Welders and Welding Operators Lowest Permissible Temperatures for Welding Cutting, Fitting, and Alignment Cleaning of Surfaces to Be Welded Alignment Tolerance Spin‐Holes Finished Longitudinal and Circumferential Joints Fillet Welds Miscellaneous Welding Requirements Repair of Weld Defects Peening Procedures for Postweld Heat Treatment Sectioning of Welded Joints Surface Weld Metal Buildup Inspection and Tests General Check of Welding Procedure Check of Welder and Welding Operator Qualifications Check of Postweld Heat Treatment Practice Nondestructive Examination of Welds on Pneumatically Tested Vessels Radiographic Examination of Welded Joints Spot Examination of Welded Joints Ultrasonic Examination of Welded Joints Qualification of Nondestructive Examination Personnel Marking and Reports General 147 147 147 148 148 148 148 149 149 150 150 150 152 152 152 152 152 152 152 152 153 153 154 154 154 154 Requirements for Pressure Vessels Fabricated by Forging General Scope Materials General Forgings Forged Steel Rolls Used for Corrugating Paper Machinery Design General Head Design Corrosion Allowance Fabrication General Tolerances on Body Forgings Methods of Forming Forged Heads Tolerance on Forged Heads Localized Thin Areas Heat Treatment Welding for Fabrication Repair of Defects in Material Repair of Weld Defects Attachment of Threaded Nozzles to Integrally Forged Necks and Thickened Heads on Vessels Inspection and Tests General Acceptance by Inspector Parts Forging Check of Heat Treatment and Postweld Heat Treatment Test Specimens 155 155 155 155 155 155 155 155 155 155 156 156 156 156 156 156 156 156 157 158 158 158 159 159 159 159 159 159 vi Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT UF-54 UF-55 159 159 159 159 Requirements for Pressure Vessels Fabricated by Brazing General Scope Elevated Temperature Service Restrictions Materials General Brazing Filler Metals Fluxes and Atmospheres Design General Strength of Brazed Joints Qualification of Brazed Joints for Design Temperatures Up to the Maximum Shown in Column of Table UB-2 Qualification of Brazed Joints for Design Temperatures in the Range Shown in Column of Table UB-2 Corrosion Joint Efficiency Factors Application of Brazing Filler Metal Permissible Types of Joints Joint Clearance Joint Brazing Procedure Openings Nozzles Brazed Connections Low Temperature Operation Fabrication General Qualification of Brazing Procedure Qualification of Brazers and Brazing Operators Buttstraps Cleaning of Surfaces to Be Brazed Clearance Between Surfaces to Be Brazed Postbrazing Operations Repair of Defective Brazing Inspection and Tests General Inspection During Fabrication Procedure Brazer and Brazing Operator Visual Examination Exemptions Marking and Reports General 160 160 160 160 160 160 160 161 161 161 161 161 161 161 161 161 162 162 163 163 163 163 164 164 164 164 164 165 165 165 165 165 165 165 165 165 165 166 166 166 166 Subsection C Requirements Pertaining to Classes of Materials 167 Part UCS Requirements for Pressure Vessels Constructed of Carbon and Low Alloy Steels General Scope Materials General 167 167 167 167 167 UF-115 Part UB UB-1 UB-2 UB-3 UB-5 UB-6 UB-7 UB-9 UB-10 UB-11 UB-12 UB-13 UB-14 UB-15 UB-16 UB-17 UB-18 UB-19 UB-20 UB-21 UB-22 UB-30 UB-31 UB-32 UB-33 UB-34 UB-35 UB-36 UB-37 UB-40 UB-41 UB-42 UB-43 UB-44 UB-50 UB-55 UCS-1 UCS-5 Tests and Retests Ultrasonic Examination Marking and Reports General vii `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT 161 UCS-6 UCS-7 UCS-8 UCS-9 UCS-10 UCS-11 UCS-12 UCS-16 UCS-19 UCS-23 UCS-27 UCS-28 UCS-29 UCS-30 UCS-33 UCS-56 UCS-57 `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - UCS-65 UCS-66 UCS-67 UCS-68 UCS-75 UCS-79 UCS-85 UCS-90 UCS-115 Nonmandatory Appendix UCS-A UCS-A-1 UCS-A-2 UCS-A-3 Part UNF UNF-1 UNF-3 UNF-4 UNF-5 UNF-6 UNF-7 UNF-8 UNF-12 UNF-13 UNF-14 UNF-15 UNF-16 UNF-19 UNF-23 Steel Plates Steel Forgings Steel Castings Steel Pipe and Tubes Bolt Materials Nuts and Washers Bars and Shapes Design General Welded Joints Maximum Allowable Stress Values Shells Made From Pipe Thickness of Shells Under External Pressure Stiffening Rings for Shells Under External Pressure Attachment of Stiffening Rings to Shell Formed Heads, Pressure on Convex Side Requirements for Postweld Heat Treatment Radiographic Examination Low Temperature Operation Scope Materials Impact Tests of Welding Procedures Design Fabrication General Forming Pressure Parts Heat Treatment of Test Specimens Inspection and Tests General Marking and Reports General 167 168 168 168 168 168 168 168 168 169 169 169 170 170 170 170 170 181 181 181 181 197 197 198 198 198 198 200 200 200 200 201 201 201 201 Requirements for Pressure Vessels Constructed of Nonferrous Materials General Scope Uses Conditions of Service Materials General Nonferrous Plate Forgings Castings Bolt Materials Nuts and Washers Rods, Bars, and Shapes Other Materials Design General Welded Joints Maximum Allowable Stress Values 202 202 202 202 202 202 202 202 202 202 202 203 203 203 203 203 203 203 General Creep–Rupture Properties of Carbon Steels Vessels Operating at Temperatures Colder Than the MDMT Stamped on the Nameplate viii Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT NN-6 ASME BPVC.VIII.1-2019 (c) Users, designated agents, and Manufacturers should become familiar with the Code-assigned responsibilities and associated rules to ensure that the responsibilities applicable to their activities are covered when preparing (user or his designated agent) or reviewing (Manufacturer) Form U-DR-1 or U-DR-2, as applicable; see Nonmandatory Appendix KK, Guide for Preparing User’s Design Requirements See also U-2(a) and U-2(b) (11) User–Manufacturer Rules (b) See Tables NN-6-1 through NN-6-11 for the Code-assigned responsibilities and applicable paragraphs for each of the categories listed in (a) The category number given in (a) corresponds to the designator of the relevant table `,``,``,,`,`,,````,`,``,,,`-` Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS 704 Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 NN-6 Table NN-6-1 Responsibilities of the User Responsibility Code Reference Additional Information Refer to pertinent supplementary documents Foreword, second paragraph … Overpressure protection UG-125(a)(2) … UG-129(c)(6) … UG-140(a)(1) … UG-140(a)(2) … UG-140(b)(3) … UG-140(b)(5) … M-5.1(a) … M-5.3 … M-5.7(b)(3) … M-5.8 … M-10(a) … M-10(b) … UG-35.2(c)(6) … Quick-actuating and quick-opening closures … UG-35.3(c)(3) UG-35.2(b)(8) UG-35.3(b)(5) Provides reference to Nonmandatory Appendix FF that covers installation, operational, and maintenance recommendations for the user FF-1 … FF-2 … FF-3 … FF-5 … FF-6 … FF-7 … FF-8 … Proof tests UG-101(a)(4)(-a) … Materials of construction UG-77(b) … UNF-15(b) … UNF-65 … UHA-42 … UCL-11(b) … UCL-12 … UCL-25(a) … UHX-12.4(a) … UHX-13.4 … UHX-13.8.1(c) … UHX-14.6.1(c) … Heat exchanger design `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 705 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT NN-6 ASME BPVC.VIII.1-2019 Table NN-6-2 Matters of Agreement Between the User and the Manufacturer Responsibility Code Reference Additional Information … Use of calculated test pressure UG-99(c) Permit painting or coating of pressure-retaining welds prior to hydrostatic pressure test UG-99(k) Document permission on Form U-DR-1 or Form U-DR-2 Permit painting or coating of pressure-retaining welds prior to pneumatic pressure testing UG-100(e) Document permission on Form U-DR-1 or Form U-DR-2 Welded joints examined by sectioning UW-41 … Weld repair UW-51(b) … Postweld heat treatment UNF-56(b) … UNF-56(d)(1) … … Weld metal composition UCL-32 Flange rigidity 2-14(b) Weld repair UW-51(b) … Postweld heat treatment UNF-56(b) … UNF-56(d)(1) … Weld metal composition UCL-32 Flange rigidity 2-14(b) Example 3, Constant “c” 2-1 2-14(a) … See also 2-14(a) … Table NN-6-3 The Manufacturer’s Responsibility to the User Responsibility `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - ð19Þ Code Reference Additional Information Installation, operational, and maintenance requirements to the user in the form of recommendations Nonmandatory Appendix FF … Manufacturer’s submittal of data report to the user UG-120(a)(3)(-a) … Quality control system 10-1 … Table NN-6-4 Recommendations to the User Responsibility Code Reference Additional Information Conditions of service UNF-4 … Fabrication Nonmandatory Appendix UHA-A … Corrosion rates M-10(b) … Pilot-operated pressure relief valves M-10(b) … Sizing of pressure relief devices for fire conditions M-13(a) … Quick-opening closures Nonmandatory Appendix FF Covering installation, operational, and maintenance guidance for the user in the form of recommendations 706 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 NN-6 Table NN-6-5 Responsibilities of the User or His Designated Agent Responsibility Code Reference Selection of code rules Foreword Establish design requirements U-2(a) Additional Information … See also 1(b) of “Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees” in the front matter U-2(a)(1) … U-2(a)(2) … U-2(a)(3) … U-2(a)(4) … U-2(b)(2) … Nonmandatory Appendix KK … Minimum thickness UG-16(b)(2) … Loadings UG-22 … Specify corrosion allowance UG-25(a) … Specify maximum allowable external pressure UG-28(f) … Overpressure protection UG-125(a)(1) … UG-125(a)(3) … Determine if contents are lethal UW-2(a) … Design temperature calculations UW-2(d)(3) Establish welded pressure joint requirements UW-12 … See also L-1.2 and L-1.4(c) Responsibility Code Reference Additional Information Degree of NDE beyond Code requirements U-2(a)(5) … Design loads to be considered U-2(b)(2) … Degree of corrosion resistance UG-136(b)(2) … 707 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Table NN-6-6 Matters of Agreement Between the User or His Designated Agent and the Manufacturer NN-6 ASME BPVC.VIII.1-2019 ð19Þ Table NN-6-7 The Manufacturer’s Responsibility to the User or His Designated Agent Responsibility Code Reference Additional Information … Obtain all applicable design requirements U-2(b)(2) Submit data reports UG-120(a)(1)(-b) Vessels manufactured for stock; see also Table W-3, Reference No (3) UG-120(c)(1)(-a) … UCS-56(f)(1) … UNF-56(d)(3)(-a) … Supplemental marking UHX-19.2 … Obtain approval before making casting repairs 7-4(d) … Provide calculations, location, and extent of local thin areas, if requested 32-2(a) … Table W-3, Reference No (3) … Prior notification of weld repair Table NN-6-8 Recommendations to the User or His Designated Agent Responsibility Code Reference Assure himself regarding materials of construction Additional Information … UG-4(f) Table NN-6-9 Cautionary Advice Provided to the User Responsibility General Code Reference U-2(a) Additional Information Input from Manufacturer U-4(d)(2) Units of measurement 1(b) of “Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees” in the front matter Code Case acceptance Inelastic straining due to creep [Note (1)] … Painting before pressure testing UG-99(k) … … UG-100(e) Pressure relief devices Expansion joint design UG-127(a)(1) [Note (2)] UG-127(a)(3)(-b)(-4) [Note (3)] UG-127(a)(3)(-c)(-1) [Note (4)] UG-135(b)(2) [Note (5)] 11-2 See in-text Note in 11-2(a) M-10(b) … 5-1(d) … NOTES: (1) For Code reference, see endnote.14 (2) For additional information, see endnote.46 (3) For additional information, see endnote.52 (4) For additional information, see endnote.54 (5) For additional information, see endnote.61 708 `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 NN-6 Table NN-6-10 Guidance Code to Users and Their Designated Agents Responsibility Code Reference Additional Information Submittal of technical inquiries 1(b) of “Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees” in the front matter … Guidance to accommodate deflagration loadings H-1 … Design criteria selection for deflagration loadings H-4.1 … Guide for preparing user’s design requirements Nonmandatory Appendix KK … Forms U-DR-1 and U-DR-2 … Table KK-1 … Table NN-6-11 User–Manufacturer Rules Responsibility Code Reference Additional Information Inspection by user-inspector UG-91(a)(2) … User’s inspector marking UG-116(a)(1)(-a) … Table W-3, Reference No (12) … `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 709 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - INTENTIONALLY LEFT BLANK Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 ENDNOTES The water may contain additives, provided the flash point of the aqueous solution at atmospheric pressure is 185°F or higher The flash point shall be determined by the methods specified in ASTM D93 or in ASTM D56, whichever is appropriate Requirements for pressure vessels for human occupancy are covered by ASME PVHO‐1 These requirements for design, fabrication, testing, and material for non-pressure-part attachments not establish the length, size, or shape of the attachment material Pads and standoffs are permitted and the scope can terminate at the next welded or mechanical joint See UG-90(b) and UG-90(c)(1) for summaries of the responsibilities of the Manufacturer and the duties of the Inspector Guidance for conversion of units from U.S Customary to SI is found in Nonmandatory Appendix GG In some instances the limitations of the scope clause in the material specifications are based on a very realistic maximum It is recommended that the designer and/or fabricator confer with the material manufacturer or supplier before proceeding, thus assuring himself that except for size or thickness, all requirements of the material specification will be met and so certified The term “plate” for the purpose of this usage includes sheet and strip also Pipe and tubing fabricated by fusion welding, with filler metal added, may not be used in Code construction unless it is fabricated in accordance with Code rules as a pressure part The pressure differential method is described in “Materials Research Standards,” Vol 1, No 7, July 1961, published by ASTM 11 It is recommended that a suitable margin be provided above the pressure at which the vessel will be normally operated to allow for probable pressure surges in the vessel up to the setting of the pressure-relieving devices (see UG-134) 12 For the basis on which the tabulated stress values have been established, see Section II, Part D, Mandatory Appendix 13 See 3-2, Definition of Terms 14 The user of the Code is cautioned that for elevated metal temperatures when high membrane stress and/or high bending stress exist in the section, some inelastic straining due to creep in excess of the limits allowed by the criteria of Section II, Part D, Mandatory Appendix may occur 15 UG-23(d) permits an increase in allowable stress when earthquake or wind loading is considered in combination with other loads and pressure defined in UG-22 The 1.2 increase permitted is equivalent to a load reduction factor of 0.833 Some standards which define applicable load combinations not permit an increase in allowable stress, however a load reduction factor (typically 0.75) is applied to multiple transient loads (e.g., wind plus live load, seismic plus live load, etc.) 16 Pilot casting — Any one casting, usually one of the first from a new pattern, poured of the same material and using the identical foundry procedure (risering, gating, pouring, and melting) as the castings it is intended to represent Any pilot casting or castings taken to represent a lot and the castings of that lot shall be poured from a heat of metal from which the castings on the current order are poured 711 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 10 When a pressure vessel is expected to operate at more than one pressure and temperature condition, other values of maximum allowable working pressure with the coincident permissible temperature may be added as required See UG-20(b) ASME BPVC.VIII.1-2019 17 Critical sections: For static castings, the sections where imperfections are usually encountered are abrupt changes in section and at the junctions of risers, gates, or feeders to the casting For centrifugal castings, critical sections shall be interpreted to be any abrupt changes of section, the circumference for a distance of at least in (75 mm) from each end, and one additional circumferential band at least in (75 mm) wide and including the area of the most severe indication detected by other examination methods 18 Formulas in terms of the outside radius and for thicknesses and pressures beyond the limits fixed in this paragraph are given in 1-1 to 1-3 19 For pipe, the inside radius R is determined by the nominal outside radius minus the nominal wall thickness 20 These formulas will govern only when the circumferential joint efficiency is less than one‐half the longitudinal joint efficiency, or when the effect of supplementary loadings (UG-22) causing longitudinal bending or tension in conjunction with internal pressure is being investigated 21 It is recommended that a suitable margin be provided when establishing the maximum allowable external working pressure to allow for pressure variations in service 22 In order to ensure that a finished head is not less than the minimum thickness required, it is customary to use a thicker plate to take care of possible thinning during the process of forming The neck of an opening in a head with an integrally flanged opening will thin out due to the fluing operation This is permissible, provided the neck thickness is not less than the thickness required for a cylindrical shell subject to internal and/or external pressure, as applicable, and having an inside diameter equal to the maximum diameter of the opening [see UG-38(a) and UG-46(j)] 23 Formulas in terms of outside dimensions and for heads of other proportions are given in 1-4 24 Special consideration shall be given to the design of shells, nozzle necks or flanges to which noncircular heads or covers are attached [see U-2(g)] 25 The formulas provide safe construction as far as stress is concerned Greater thicknesses may be necessary if deflection would cause leakage at threaded or gasketed joints 26 The rules governing openings as given in this Division are based on the stress intensification created by the existence of a hole in an otherwise symmetrical section External loadings such as those due to the thermal expansion or unsupported weight of connecting piping have not been evaluated These factors should be given attention in unusual designs or under conditions of cyclic loading 27 The opening made by a pipe or a circular nozzle, the axis of which is not perpendicular to the vessel wall or head, may be considered an elliptical opening for design purposes 28 An obround opening is one which is formed by two parallel sides and semicircular ends 29 In the corroded condition, see UG-16(e) 30 All dimensions given, for size of vessel on which inspection openings are required, are nominal 31 Dimensions referred to are nominal 32 The minimum cross section is usually at the root of the thread 33 The rules in this paragraph apply to ligaments between tube holes and not to single openings They may give lower efficiencies in some cases than those for symmetrical groups which extend a distance greater than the inside diameter of the shell as covered in (e) above When this occurs, the efficiencies computed by the rules under (b) above shall govern 34 Where applicable for Part UCS materials, the impact test temperature may be adjusted in accordance with UG-84(b)(2) and Table UG-84.4 35 The maximum allowable working pressure may be assumed to be the same as the design pressure when calculations are not made to determine the maximum allowable working pressure `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 36 In some cases it is desirable to test vessels when partly filled with liquids For such vessels a combined hydrostatic and pneumatic test may be used as an alternative to the pneumatic test of this paragraph, provided the liquid level is set so that the maximum stress including the stress produced by pneumatic pressure at any point in the vessel Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS 712 Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 (usually near the bottom) or in the support attachments, does not exceed 1.3 times the allowable stress value of the material multiplied by the applicable joint efficiency After setting the liquid level to meet this condition, the test is conducted as prescribed in (b) and (c) above Air or gas is hazardous when used as a testing medium It is therefore recommended that special precautions be taken when air or gas is used for test purposes 37 Examples of the use of modeling techniques are found in UG-127(a)(2)(-a)(-1)(+b) and UG-131(d)(2)(-b), or refer to textbooks on the subject 38 The maximum allowable working pressure (external) is required only when specified as a design condition 39 See UG-90(c)(2) for additional requirements applicable to mass produced pressure vessel fabrication 40 In this usage, organization may be the same company at a single site, a multiplant company with separate Certificates of Authorization, regardless of type, or a multiplant corporation with extended corporate Certificates of Authorization 41 For the purpose of these rules, gases are considered to be substances having a vapor pressure greater than 40 psia (300 kPa absolute) at 100°F (40°C) 42 Normally this temperature should not be less than 115°F (45°C) 43 A pressure relief valve is a pressure relief device which is designed to reclose and prevent the further flow of fluid after normal conditions have been restored A nonreclosing pressure relief device is a pressure relief device designed to remain open after operation `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 44 A safety valve is a pressure relief valve actuated by inlet static pressure and characterized by rapid opening or pop action A relief valve is a pressure relief valve actuated by inlet static pressure which opens in proportion to the increase in pressure over the opening pressure A safety relief valve is a pressure relief valve characterized by rapid opening or pop action, or by opening in proportion to the increase in pressure over the opening pressure, depending on application A pilot-operated pressure relief valve is a pressure relief valve in which the major relieving device is combined with and is controlled by a self‐actuated auxiliary pressure relief valve 45 A rupture disk device is a nonreclosing pressure relief device actuated by inlet static pressure and designed to function by the bursting of a pressure-containing disk A rupture disk is the pressure-containing and pressure-sensitive activation component of a rupture disk device Rupture disks may be designed in several configurations, such as plain flat, prebulged, or reverse buckling A rupture disk holder is the structure that encloses and clamps the rupture disk in position 46 The manufacturing design range is a range of pressure within which the marked burst pressure must fall to be acceptable for a particular requirement as agreed upon between the rupture disk Manufacturer and the user or his designated agent The manufacturing design range must be evaluated in conjunction with the specified burst pressure to ensure that the marked burst pressure of the rupture disk will always be within applicable limits of UG-134 Users are cautioned that certain types of rupture disks have manufacturing ranges that can result in a marked burst pressure greater than the specified burst pressure 47 The specified disk temperature supplied to the rupture disk Manufacturer shall be the temperature of the disk when the disk is expected to burst 48 A lot of rupture disks is those disks manufactured of a material at the same time, of the same size, thickness, type, heat, and manufacturing process including heat treatment 49 The minimum net flow area is the calculated net area after a complete activation of the rupture disk or pin device with appropriate allowance for any structural members which may reduce the net flow area through the device The net flow area for sizing purposes shall not exceed the nominal pipe size area of the rupture disk device 50 The certified flow resistance KR is a dimensionless factor used to calculate the velocity head loss that results from the presence of a nonreclosing pressure relief device in a pressure relief system 51 Use of a rupture disk device in combination with a pressure relief valve shall be carefully evaluated to ensure that the media being handled and the valve operational characteristics will result in opening of the valve coincident with the bursting of the rupture disk 713 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 52 Users are warned that a rupture disk will not burst at its design pressure if back pressure builds up in the space between the disk and the pressure relief valve which will occur should leakage develop in the rupture disk due to corrosion or other cause 53 This use of a rupture disk device in series with the pressure relief valve is permitted to minimize the loss by leakage through the valve of valuable or of noxious or otherwise hazardous materials, and where a rupture disk alone or disk located on the inlet side of the valve is impracticable, or to prevent corrosive gases from a common discharge line from reaching the valve internals 54 Users are warned that many types of pressure relief valves will not open at the set pressure if pressure builds up in the space between the pressure relief valve disk and the rupture disk device A specially designed pressure relief valve such as a diaphragm valve, pilot-operated valve, or a valve equipped with a balancing bellows above the disk may be required 55 Some adverse effects resulting from leakage may include obstructing the flow path, corrosion of pressure relief valve components, and undesirable bursts of the outlet side rupture disk 56 A pin device is a nonreclosing pressure relief device actuated by inlet static or differential pressure and designed to function by the activation of a load bearing section of a pin that supports a pressure-containing member A p i n is the load bearing activation component of a pin device its crosssectional area is not limited to a circular shape A pin device body is the structure that encloses the pressure-containing members 57 The specified temperature supplied to the pin manufacturer shall be the temperature of the pin when an emergency condition exists and the pin is expected to activate 58 Vacuum relief devices are not covered by Certification Mark requirements 59 Pressure relief device capacities flow resistances are published in “Pressure Relief Device Certifications.” This publication may be obtained from the National Board of Boiler and Pressure Vessel Inspectors, 1055 Crupper Avenue, Columbus, OH 43229 60 The set pressure is the value of increasing inlet static pressure at which a pressure relief device displays one of the operational characteristics as defined by opening pressure, popping pressure, start‐to‐leak pressure, burst pressure, breaking pressure or buckling pressure (The applicable operating characteristic for a specific device design is specified by the device Manufacturer.) 61 Users are warned that the proper operation of nonreclosing pressure relief devices depends upon following the Manufacturer’s installation instructions closely with regard to the flow direction marked on the device Some device designs will burst at pressures much greater than their marked burst pressure when installed with the process pressure on the vent side of the device 62 The User may specify a higher test pressure commensurate with the back pressure anticipated in service 63 The pin temperature may be different from the operating temperature for devices where the pin is isolated from operating conditions 64 By “lethal substances” are meant poisonous gases or liquids of such a nature that a very small amount of the gas or of the vapor of the liquid mixed or unmixed with air is dangerous to life when inhaled For purposes of this Division, this class includes substances of this nature which are stored under pressure or may generate a pressure if stored in a closed vessel 65 Communicating chambers are defined as appurtenances to the vessel which intersect the shell or heads of a vessel and form an integral part of the pressure-containing enclosure, e.g., sumps 66 Side plates of a flat‐sided vessel are defined as any of the flat plates forming an integral part of the pressurecontaining enclosure 67 One test specimen may represent a group of forgings, provided they are of the same design, are from the same heat of material and are forged in the same manner 68 Welder includes brazer, welding operator, and brazing operator 69 Examination shall be by magnetic particle or liquid penetrant methods when the material is ferromagnetic, or by the liquid penetrant method when the material is nonferromagnetic 714 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 70 It is not the intent of this paragraph to require measurement of reductions in thickness due to the welding process If a disagreement between the Manufacturer and the Inspector exists as to the acceptability of any reduction in thickness, the depth shall be verified by actual measurement 71 Concavity due to the welding process on the root side of a single-welded circumferential butt weld is permitted when the resulting thickness of the weld is at least equal to the thickness of the thinner member of the two sections being joined and the contour of the concavity is smooth 72 Furnace gas temperature measurement alone is not considered sufficiently accurate 73 Flux residues can be extremely corrosive as well as interfering with visual inspection 74 Low alloy steels — those alloy steels listed in Table UCS-23 75 See Section II, Part D, Mandatory Appendix for the basis on which the allowable stress values have been established 76 The rates of heating and cooling need not be less than 100°F/hr (56°C/h) However, in all cases consideration of closed chambers and complex structures may indicate reduced rates of heating and cooling to avoid structural damage due to excessive thermal gradients 77 No provisions of this paragraph waive other requirements of this Division, such as UW-2(a), UW-2(d), UW-10, and UCS-56 78 This is defined in Section V, Article 2, T-277, and A-1(a) 79 Thermal treatments of materials are not intended to include warming to temperatures not exceeding 600°F (315°C), thermal cutting, or welding 80 Either base metal or weld metal 81 Calculated stress from pressure and nonpressure loadings, including those listed in UG-22 which result in general primary membrane tensile stress 82 See Section II, Part D, Nonmandatory Appendix A, A-206 83 By “lethal substances” are meant poisonous gases or liquids of such a nature that a very small amount of the gas or of the vapor of the liquid mixed or unmixed with air is dangerous to life, when inhaled For purposes of this Division, this class includes substances of this nature which are stored under pressure or may generate a pressure if stored in a closed vessel 84 It is the intent that cast ductile irons with an elongation of less than 15% in in (50 mm) be treated as cast iron and that vessels or pressure parts of such material be designed and fabricated in accordance with the rules in Part UCI 85 Buttered means buildup overlay welding 86 Temper bead welding technique is done when the final beads of welding are made over‐flush, deposited only on previous beads of welding for tempering purposes without making contact with the base metal, and then removing these final beads 87 Layer wash is defined as the indications resulting from slight weld penetration at the layer interfaces 88 Ellipsoidal heads designed under K > 1.0 and all torispherical heads made of materials having a specified minimum tensile strength exceeding 70,000 psi (485 MPa) shall be designed using a value of S equal to 20,000 psi (138 MPa) at room temperature and reduced in proportion to the reduction in maximum allowable stress values at temperature for the material as shown in the appropriate table (see UG-23) 89 When the flange material is cast iron, particular care should be taken when tightening the bolts to avoid excessive stress that may break the flange The longitudinal hub stress has been limited to Sf in order to minimize any cracking of flanges An attempt should be made to apply no greater torque than is needed to assure tightness during the hydrostatic test 90 Loose flanges of the type shown in Figure 2-4, sketch (1) are of the split design when it is necessary to install them after heat treatment of a stainless steel vessel, or when for any reason it is desired to have them completely removable from the nozzle neck or vessel 715 `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 91 When internal pressure occurs only during the required pressure test, the design may be based on external pressure, and auxiliary devices such as clamps may be used during the application of the required test pressure 92 The Code as currently written provides minimum requirements for construction and it is recognized to be the responsibility of the designing engineer to determine when the intended service is of a nature that requires supplementary requirements to ensure safety; consequently, the designer should determine when the service warrants that this class of inspection be specified for steel castings of less than in (100 mm) nominal body thickness 93 The coefficients of these formulas include a factor that effectively increases the allowable stress for such construction to 1.5S 94 The complexity of the work includes factors such as design simplicity versus complexity, the types of materials and welding procedures used, the thickness of materials, the types of nondestructive examinations applied, and whether heat treatments are applied 95 The size and complexity of the organization includes factors such as the number of employees, the experience level of employees, the number of Code items produced, and whether the factors defining the complexity of the work cover a wide or narrow range 96 Knowing the official rating capacity of a safety valve which is stamped on the valve, it is possible to determine the overall value of K A in either of the following formulas in cases where the value of these individual terms is not known: Official Rating in Steam Official Rating in Air This value for KA is then substituted in the above formulas to determine the capacity of the safety valve in terms of the new gas or vapor 97 Use E = 1.0 for Category C and D joints that are not butt welded since stresses in these joints are controlled by the applicable rules for sizing such joints See Figures UG-34 and UW-13.2 98 I = bt 3/12 where b = 1.0 for vessels without reinforcements and for vessels with stay plates or stay rods I = pt 3/ 12 for vessels with reinforcements that not extend around the corners of the vessel [see Figure 13-2(a), sketches (5) and (6)] 99 For unreinforced vessels of rectangular cross section (13-7 and parts of 13-18), the given moments are defined on a per‐unit‐width basis That is, moments have dimensions [Length × Force/Length] = [Force] 100 See Manual of Steel Construction, AISC, American Institute of Steel Construction, Inc., One East Wacker Drive, Chicago, IL 60601‐1802 `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - 101 Air or gas is hazardous when used as a testing medium It is therefore recommended the vessel be tested in such a manner as to ensure personnel safety from a release of the total internal energy of the vessel See also ASME PCC‐2, Article 501, Mandatory Appendix 501-II, “tored Energy Calculations for Pneumatic Pressure Test,” and Mandatory Appendix 501-III, “Safe Distance Calculations for Pneumatic Pressure Test.” 102 When using high alloys and nonferrous materials either for solid wall or clad or lined vessels, refer to UHA-6, UCL-3, and UNF-4, as appropriate 103 See “Stresses in Large Cylindrical Pressure Vessels on Two Saddle Supports,” p 959, Pressure Vessels and Piping: Design and Analysis, A Decade of Progress, Volume Two, published by ASME 104 See Transactions ASCE, Volume 98 — 1931 “Design of Large Pipe Lines.” 105 This construction has the further advantage of not transmitting discharge‐pipe strains to the valve In these types of installation, the back pressure effect will be negligible, and no undue influence upon normal valve operation can result 106 A Nonmandatory Appendix Y flange bolted to a rigid foundation may be analyzed as a Class assembly by substituting 2l for l in eq Y-6.1(12) of Y-6.1 716 Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT ASME BPVC.VIII.1-2019 107 Where the flanges are identical dimensionally and have the same elastic modulus E, but have different allowable stresses S f , the assembly may be analyzed as a Class assembly, provided the calculated stresses are evaluated against the lower allowable stress 108 The symbols for the various stresses in the case of a Class assembly also carry the subscript I or II For example, S H I represents the longitudinal hub stress in Flange I of the Class assembly 109 Manufacturers are cautioned to calculate the minimum ratio based upon mill test values of the tube and tubesheet 110 The Manufacturer may correlate rolling torque, hydraulic expanding pressure, or explosive charge with shear load tests For explosive expanding, the Manufacturer may correlate interference of fit `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS 717 Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT 2019 ASME Boiler and Pressure Vessel Code AN INTERNATIONAL CODE Since its first issuance in 1914, the ASME Boiler and Pressure Vessel Code (BPVC) has been a flagship for modern international standards development Each new edition reaffirms ASME’s commitment to enhance public safety and encourage technological advancement to meet the needs of a changing world Sections of the BPVC have been incorporated into law in the United States and Canada, and are used in more than 100 countries The BPVC has long been considered essential within the electric power generation, petrochemical, and transportation industries, among others ASME also provides BPVC users with integrated suites of related offerings, including • referenced standards • related standards and guidelines • conformity assessment programs • personnel certification programs • ASME Press books and journals You gain unrivaled insight direct from the BPVC source, along with the professional quality and real-world solutions you have come to expect from ASME For additional information and to order: Phone: 1.800.THE.ASME (1.800.843.2763) Email: customercare@asme.org Website: go.asme.org/bpvc Copyright ASME International (BPVC) Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Licensee=Khalda Petroleum/5986215001, User=Amer, Mohamed Not for Resale, 07/02/2019 13:29:04 MDT `,``,``,,`,`,,````,`,``,,,`-`-`,,`,,`,`,,` - • learning and development solutions ... 16 0 16 0 16 0 16 0 16 0 16 0 16 0 16 1 16 1 16 1 16 1 16 1 16 1 16 1 16 1 16 1 16 2 16 2 16 3 16 3 16 3 16 3 16 4 16 4 16 4 16 4 16 4 16 5 16 5 16 5 16 5 16 5 16 5 16 5 16 5 16 5 16 5 16 6 16 6 16 6 16 6 Subsection C... Qualification of Welding Procedure 11 4 11 4 11 4 11 4 11 5 11 6 11 6 11 7 11 7 11 7 11 7 11 9 11 9 12 0 12 0 12 9 13 1 13 1 14 1 14 1 14 1 14 3 14 5 14 5 14 5 14 6 14 6 v Copyright ASME International... 4-8 5 -1 5-2 9-2 9-5 9-6 9-7 11 -1 11- 1M 11 -2 11 -2M 13 -2(a) 13 -2(b) 13 -2(c) 13 -6 13 -14 (a) 13 -14 (b) 14 -1 17 -1 17-2 17 -3 17 -4 17 -5 17 -6 17 -7 17 -8 17 -9 17 -10 17 -11 17 -12 17 -13 Tube Tension Test Specimen