ASME PCC-2-2011 压力设备和管道的修理.pdf

AN AMERICAN NATIO NAL STANDARD Repair of Pressure Equipment and Piping ASME PCC-2–2011 Revision of ASME PCC-2–2008 Copyright ASME International Provided by IHS under license with ASME LicenseeInelectra -Venezuela site/9990084001, Userortega, gumercindo Not for Resale, 09/28/2011 063318 MDTNo reproduction or networking permitted without license from IHS --,,,,,,,,,,,--,,,,,,,--- INTENTIONALLY LEFT BLANK Copyright ASME International Provided by IHS under license with ASME LicenseeInelectra -Venezuela site/9990084001, Userortega, gumercindo Not for Resale, 09/28/2011 063318 MDTNo reproduction or networking permitted without license from IHS --,,,,,,,,,,,--,,,,,,,--- ASME PCC-2–2011 Revision of ASME PCC-2–2008 Repair of Pressure Equipment and Piping AN AMERICAN NATIONAL STANDARD Three Park Avenue New York, NY 10016 USA Copyright ASME International Provided by IHS under license with ASME LicenseeInelectra -Venezuela site/9990084001, Userortega, gumercindo Not for Resale, 09/28/2011 063318 MDTNo reproduction or networking permitted without license from IHS --,,,,,,,,,,,--,,,,,,,--- Date of Issuance April 28, 2011 This Standard will be revised when the Society approves the issuance of a new edition. This Standard will become effective 6 months after the Date of Issuance. There will be no addenda issued to this edition. ASME issues written replies to inquiries concerning interpretations of technical aspects of this document. Interpretations are published on the ASME Web site under the Committee Pages at http//cstools.asme.org as they are issued. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. 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 forpublic review andcomment thatprovides an opportunityfor additional public from industry,academia, regulatory agencies, and the public-at-large. ASME does not “approve,” “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 assumes 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 representatives or persons 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. No part of this document may be reproduced in any , in an electronic retri system or otherwise, without the prior written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright 2011 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in U.S.A. Copyright ASME International Provided by IHS under license with ASME LicenseeInelectra -Venezuela site/9990084001, Userortega, gumercindo Not for Resale, 09/28/2011 063318 MDTNo reproduction or networking permitted without license from IHS --,,,,,,,,,,,--,,,,,,,--- CONTENTS Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv Preparation of Technical Inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii Part 1Scope, Organization, and Intent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Part 2Welded Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Article 2.1Butt-Welded Insert Plates in Pressure Components . . . . . . . . . . . . . . . . . . . . . . . .5 Article 2.2External Weld Overlay to Repair Internal Thinning . . . . . . . . . . . . . . . . . . . . . . .11 Article 2.3Seal-Welded Threaded Connections and Seal Weld Repairs . . . . . . . . . . . . . . . .17 Article 2.4Welded Leak Box Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Article 2.5Welded Lip Seals in the course of preparation . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Article 2.6Full Encirclement Steel Reinforcing Sleeves for Piping . . . . . . . . . . . . . . . . . . . . .24 Article 2.7Fillet Welded Patches With Reinforcing Plug Welds . . . . . . . . . . . . . . . . . . . . . . .31 Article 2.8Alternatives to Traditional Welding Preheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 Article 2.9Alternatives to Postweld Heat Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 Article 2.10In-Service Welding Onto Carbon Steel Pressure Components or Pipelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 Article 2.11Weld Buildup, Weld Overlay, and Clad Restoration . . . . . . . . . . . . . . . . . . . . . . .57 Article 2.12Fillet Welded Patches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 Article 2.13Threaded or Welded Plug Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68 Article 2.14Field Heat Treating of Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71 Part 3Mechanical Repairs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79 Article 3.1Replacement of Pressure Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79 Article 3.2Freeze Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81 Article 3.3Damaged Threads in Tapped Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86 Article 3.4Flaw Excavation and Weld Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96 Article 3.5Flange Repair and Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102 Article 3.6Mechanical Clamp Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105 Article 3.7Pipe Straightening or Alignment Bending . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109 Article 3.8Damaged Anchors in Concrete Postinstalled Mechanical Anchors . . . . . . . .112 Article 3.9Valves With Pressure-Seal-Type Bonnets in the course of preparation . . . . .121 Article 3.10Hot Bolting in the course of preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122 Article 3.11Hot and Half Bolting Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123 Article 3.12Inspection and Repair of Shell and Tube Heat Exchangers . . . . . . . . . . . . . . . . .127 Part 4Nonmetallic and Bonded Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139 Article 4.1Nonmetallic Composite Repair Systems High-Risk Applications . . . . . . . . . .139 Article 4.2Nonmetallic Composite Repair Systems Low-Risk Applications . . . . . . . . . . .171 Article 4.3Nonmetallic Internal Lining for Pipe Sprayed for Buried Pipe . . . . . . .185 Part 5Examination and Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197 Article 5.1Pressure and Tightness Testing of Piping and Equipment . . . . . . . . . . . . . . . . . .197 Article 5.2Nondestructive Examination in Lieu of Pressure Testing for Repairs and Alterations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211 iii Copyright ASME International Provided by IHS under license with ASME LicenseeInelectra -Venezuela site/9990084001, Userortega, gumercindo Not for Resale, 09/28/2011 063318 MDTNo reproduction or networking permitted without license from IHS --,,,,,,,,,,,--,,,,,,,--- FOREWORD ASME ed an Ad Hoc Task Group on Post Construction in 1993 in response to an increased need for recognized and generally accepted engineering standards for the inspection and mainte- nance of pressure equipment after it has been placed in service. At the recommendation of this Task Group, the Board on Pressure Technology Codes and Standards BPTCS ed the Post Construction Committee PCC in 1995. The scope of this committee was to develop and maintain standards addressing common issues and technologies related to post-construction activities and to work with other consensus committees in the development of separate, product-specific codes and standards addressing issues encountered after initial construction for equipment and piping covered by Pressure Technology Codes and Standards. The BPTCS covers non-nuclear boilers, pressure vessels including heat exchangers, piping and piping components, pipelines, and storage tanks. The PCC selects standards to be developed based on identified needs and the availability of volunteers. The PCC ed the Subcommittee on Inspection Planning and the Subcommittee on Flaw uations in 1995. In 1998, a Task Group under the PCC began preparing Guidelines for Pressure Boundary Bolted Flange Joint Assembly. In 1999, the PCC ed the Subcommittee on Repair and Testing. In 2002, the Subcommittee on Flaw uation was dissolved and replaced by the Joint ASME/API Committee on Fitness for Service. Other topics are under consideration and may be developed into future guideline documents. The subcommittees were charged with preparing standards dealing with several aspects of the in-serviceinspectionandmaintenanceofpressureequipmentandpiping.TheInspectionPlanning Standard provides guidance on the preparation of a risk-based inspection plan. Defects that are identified are then uated, when appropriate, using the procedures provided in the Fitness for Service. Finally, if it is determined that repairs are required, guidance on repair procedures is provided in the Repair of Pressure Equipment and Piping Standard. These documents are in various stages of preparation. None of these documents are Codes. They provide recognized and generally accepted good practices that may be used in conjunction with Post-Construction Codes, such as API 510, API 570, and NB-23, and with jurisdictional requirements. The first edition of ASME PCC-1, Guidelines for Pressure Boundary Bolted Flange Joint Assembly, wasapprovedforpublicationin2000.ASMEPCC-1–2000wasapprovedbytheAmericanNational Standards Institute ANSI as an American National Standard on November 15, 2000. The first edition of ASME PCC-2, Repair of Pressure Equipment and Piping, was approved for publication in 2004. This revision was approved by ANSI as an American National Standard on February 11, 2011. iv Copyright ASME International Provided by IHS under license with ASME LicenseeInelectra -Venezuela site/9990084001, Userortega, gumercindo Not for Resale, 09/28/2011 063318 MDTNo reproduction or networking permitted without license from IHS --,,,,,,,,,,,--,,,,,,,--- PREPARATION OF TECHNICAL INQUIRIES INTRODUCTION The ASME Post-Construction Standards Committee will consider written requests for interpre- tations and revisions of the rules of this Standard and develop new rules if dictated by technologi- cal development. The Committee’s activities in this regard are limited strictly to interpretations of the rules or to the consideration of revisions to the present rules on the basis of new data or technology. As a matter of published policy, ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity, and, accordingly, inquiries requiring such consideration will be returned. Moreover, ASME does not act as a consultant on specific engineering problems or on the general application or understanding of the rules. If, based on the inquiry ination ted, it is the opinion of the Committee that the inquirer should seek professional assistance, the inquiry will be returned with the recommendation that such assistance be obtained. AninquirythatdoesnotprovidetheinationneededfortheCommittee’sfullunderstanding will be returned. REQUIREMENTS Inquiries shall be limited strictly to interpretations of the rules or to the consideration of revisions to the present rules on the basis of new data or technology. Inquiries shall meet the following requirements a Scope. Involve a single rule or closely related rules in the scope of the standard. An inquiry letter concerning unrelated subjects will be returned. b Background. State thepurpose of theinquiry, whichmay be eitherto obtain aninterpretation of rules of this Standard, or to propose consideration of a revision to the present rules. Provide concisely the ination needed for the Committee’s understanding of the inquiry, being sure to include reference to the applicable Part, Article, Edition, Addenda, paragraphs, figures, and tables. If sketches are provided, they shall be limited to the scope of the inquiry. c Inquiry Structure 1 Proposed Questions. The inquiry shall be stated in condensed and precise question for- mat, omitting superfluous background ination, and, where appropriate, composed in such a way that “yes” or “no” perhaps with provisos would be an acceptable reply. The inquiry statement should be technically and editorially correct. 2 Proposed Replyies. Provide a proposed reply stating what the inquirer believes that the standard requires. If in the inquirer’s opinion, a revision to the standard is needed, recommended wording shall be provided in addition to ination justifyi