1、Repair of Pressure Equipmentand PipingAN AMERICAN NATIONAL STANDARDASME PCC-22015(Revision of ASME PCC-22011)ASME PCC-22015(Revision of ASME PCC-22011)Repair ofPressureEquipmentand PipingAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York, NY 10016 USADate of Issuance: February 23, 2015The next ed
2、ition of this Standard is scheduled for publication in 2017.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard. Interpretations are published on the Committee Web page and undergo.asme.org/InterpsDatabase.Errata to codes and standards may be post
3、ed on the ASME Web site under the Committee Pages toprovide corrections to incorrectly published items, or to correct typographical or grammatical errorsin codes and standards. Such errata shall be used on the date posted.The Committee Pages can be found at http:/cstools.asme.org/. There is an optio
4、n available toautomatically receive an e-mail notification when errata are posted to a particular code or standard.This option can be found on the appropriate Committee Page after selecting “Errata” in the “PublicationInformation” section.ASME is the registered trademark of The American Society of M
5、echanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards. The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity
6、 to participate. The proposed code or standard was madeavailable 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,” “rate,” or “endorse” any item, construction, proprieta
7、ry device, or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent, n
8、or assumes any such liability. Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights, and the risk of infringement of such rights, isentirely their own responsibility.Participation by federal agency representative(s) or person(s) affiliated wit
9、h industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies, which precludes the issuance of interpretations by indi
10、viduals.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.The American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990Copyright 2015 byTHE AMERICAN SOCIETY OF MECHANICAL
11、ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword ivPreparation of Technical Inquiries vCommittee Roster . viCorrespondence With the PCC Committee viiiSummary of Changes ixPart 1 Scope, Organization, and Intent 1Part 2 Welded Repairs . 5Article 2.1 Butt-Welded Insert Plates in Pressure C
12、omponents 5Article 2.2 External Weld Buildup to Repair Internal Thinning . 11Article 2.3 Seal-Welded Threaded Connections and Seal Weld Repairs 17Article 2.4 Welded Leak Box Repair . 19Article 2.5 Welded Lip Seals (in the course of preparation) . 23Article 2.6 Full Encirclement Steel Reinforcing Sle
13、eves for Piping . 24Article 2.7 Fillet Welded Patches With Reinforcing Plug Welds . 31Article 2.8 Alternatives to Traditional Welding Preheat . 37Article 2.9 Alternatives to Postweld Heat Treatment . 43Article 2.10 In-Service Welding Onto Carbon Steel Pressure Components orPipelines 46Article 2.11 W
14、eld Buildup, Weld Overlay, and Clad Restoration . 58Article 2.12 Fillet Welded Patches 64Article 2.13 Threaded or Welded Plug Repairs 70Article 2.14 Field Heat Treating of Vessels 73Part 3 Mechanical Repairs 81Article 3.1 Replacement of Pressure Components 81Article 3.2 Freeze Plugs . 83Article 3.3
15、Damaged Threads in Tapped Holes . 88Article 3.4 Flaw Excavation and Weld Repair 98Article 3.5 Flange Repair and Conversion . 104Article 3.6 Mechanical Clamp Repair 107Article 3.7 Pipe Straightening or Alignment Bending . 112Article 3.8 Damaged Anchors in Concrete (Postinstalled Mechanical Anchors) 1
16、15Article 3.9 Valves With Pressure Seal-Type Bonnets (in the course of preparation) . 124Article 3.10 Hot Bolting (in the course of preparation) 125Article 3.11 Hot and Half Bolting Removal Procedures 126Article 3.12 Inspection and Repair of Shell and Tube Heat Exchangers . 130Part 4 Nonmetallic and
17、 Bonded Repairs . 143Article 4.1 Nonmetallic Composite Repair Systems: High-Risk Applications 143Article 4.2 Nonmetallic Composite Repair Systems: Low-Risk Applications . 181Article 4.3 Nonmetallic Internal Lining for Pipe: Sprayed Form for Buried Pipe . 195Part 5 Examination and Testing. 207Article
18、 5.1 Pressure and Tightness Testing of Piping and Equipment 207Article 5.2 Nondestructive Examination in Lieu of Pressure Testing for Repairsand Alterations 222iiiFOREWORDASME formed an Ad Hoc Task Group on Post-Construction in 1993 in response to an increasedneed for recognized and generally accept
19、ed engineering standards for the inspection and mainte-nance of pressure equipment after it has been placed in service. At the recommendation ofthis Task Group, the Board on Pressure Technology Codes and Standards (BPTCS) formed thePost-Construction Committee (PCC) in 1995. The scope of this committ
20、ee was to develop andmaintain standards addressing common issues and technologies related to post-constructionactivities and to work with other consensus committees in the development of separate, product-specific codes and standards addressing issues encountered after initial construction for equip
21、-ment 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
22、ofvolunteers. The PCC formed the Subcommittee on Inspection Planning and the Subcommitteeon Flaw Evaluations in 1995. In 1998, a Task Group under the PCC began preparing Guidelinesfor Pressure Boundary Bolted Flange Joint Assembly. In 1999, the PCC formed the Subcommitteeon Repair and Testing. In 20
23、02, the Subcommittee on Flaw Evaluation was dissolved and replacedby the Joint ASME/API Committee on Fitness for Service. Other topics are under considerationand may be developed into future guideline documents.The subcommittees were charged with preparing standards dealing with several aspects of t
24、hein-service inspection and maintenance of pressure equipment and piping. The Inspection PlanningStandard provides guidance on the preparation of a risk-based inspection plan. Defects that areidentified are then evaluated, when appropriate, using the procedures provided in the Fitnessfor Service. Fi
25、nally, if it is determined that repairs are required, guidance on repair proceduresis provided in the Repair of Pressure Equipment and Piping Standard. These documents are invarious stages of preparation.None of these documents are Codes. They provide recognized and generally accepted goodpractices
26、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,was approved for publication in 2000. ASME PCC-12000 was approved by t
27、he American NationalStandards 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 forpublication in 2004. This revision was approved by ANSI as an American National Standard onJanuary 13, 2015.i
28、vPREPARATION OF TECHNICAL INQUIRIESINTRODUCTIONThe 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 Committees activities in this regard are
29、limited strictly to interpretationsof the rules or to the consideration of revisions to the present rules on the basis of new data ortechnology. As a matter of published policy, ASME does not “approve,” “certify,” “rate,” or“endorse” any item, construction, proprietary device, or activity, and, acco
30、rdingly, inquiriesrequiring such consideration will be returned. Moreover, ASME does not act as a consultant onspecific engineering problems or on the general application or understanding of the rules. If,based on the inquiry information submitted, it is the opinion of the Committee that the inquire
31、rshould seek professional assistance, the inquiry will be returned with the recommendation thatsuch assistance be obtained.An inquiry that does not provide the information needed for the Committees full understandingwill be returned.REQUIREMENTSInquiries shall be limited strictly to interpretations
32、of the rules or to the consideration ofrevisions to the present rules on the basis of new data or technology. Inquiries shall meet thefollowing requirements:(a) Scope. Involve a single rule or closely related rules in the scope of the standard. An inquiryletter concerning unrelated subjects will be
33、returned.(b) Background. State the purpose of the inquiry, which may be either to obtain an interpretationof rules of this Standard, or to propose consideration of a revision to the present rules. Provideconcisely the information needed for the Committees understanding of the inquiry, being sureto i
34、nclude reference to the applicable Part, Article, Edition, Addenda, paragraphs, figures, andtables. If sketches are provided, they shall be limited to the scope of the inquiry.(c) Inquiry Structure(1) Proposed Question(s). The inquiry shall be stated in condensed and precise question for-mat, omitti
35、ng superfluous background information, and, where appropriate, composed in sucha way that “yes” or “no” (perhaps with provisos) would be an acceptable reply. The inquirystatement should be technically and editorially correct.(2) Proposed Reply(ies). Provide a proposed reply stating what the inquirer
36、 believes that thestandard requires.If in the inquirers opinion, a revision to the standard is needed, recommended wording shallbe provided in addition to information justifying the change.SUBMITTALInquiries shall be submitted in typewritten form; however, legible handwritten inquiries willbe consid
37、ered. They shall include the name and mailing address of the inquirer, and may eitherbe sent by email to SecretaryPCCasme.org, or by mail to the following address:SecretaryASME Post-ConstructionTwo Park AvenueNew York, NY 10016-5990vASME PRESSURE TECHNOLOGYPOST-CONSTRUCTION COMMITTEE(The following i
38、s the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSC. R. Leonard, ChairJ. Batey, Vice ChairS. J. Rossi, SecretarySTANDARDS COMMITTEE PERSONNELC. Becht IV, Becht Engineering Co., Inc.D. L. Berger, PPL Generation, LLCM. A. Boring, Kiefner however, they
39、shouldnot contain proprietary names or information.Requests that are not in this format may be rewritten in the appropriate format by the Committeeprior to being answered, which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretat
40、ion when or if additionalinformation that might affect an interpretation is available. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or act
41、ivity.Attending Committee Meetings. The PCC Standards Committee regularly holds meetings thatare open to the public. Persons wishing to attend any meeting should contact the Secretary ofthe PCC Standards Committee.viiiASME PCC-22015SUMMARY OF CHANGESFollowing approval by the ASME Post-Construction C
42、ommittee and ASME, and after publicreview, ASME PCC-22015 was approved by the American National Standards Institute onJanuary 13, 2015.ASME PCC-22015 includes editorial changes, revisions, and corrections introduced in ASMEPCC-22011, as well as the following changes identified by a margin note, (15)
43、.Page Location Change7 Article 2.1, 4.1.3 Equations in subparas. (a) and (b)transposed1116 Article 2.2 Revised in its entirety43 Article 2.9, 2.3 Correctly redesignated, and remainingparagraphs redesignated64 Article 2.12, 1 Subparagraph (a) revisedArticle 2.12, 2 Subparagraph (c) revised65 Figure 1
44、 Revised6668 Article 2.12, 3.3 Subparagraphs (a) and (c) revisedArticle 2.12, 3.4 Subparagraphs (a) and (b), eq. (4), andillustration in subpara. (c) revisedArticle 2.12, 4 Subparagraphs (c), (d), (e)(2), (e)(4), and(f) revisedArticle 2.12, 5 Subparagraph (a) revisedArticle 2.12, 6 Subparagraph (c)
45、revised143153 Article 4.1, 1 Revised in its entiretyArticle 4.1, 2.2 Subparagraphs (a) and (b) revisedArticle 4.1, 3 Revised in its entiretyTable 1 Revised in its entiretyArticle 4.1, 4.1 RevisedArticle 4.1, 4.3 Subparagraph (a) revised154 Article 4.1, 4.4.4 Subparagraphs (d) and (e) addedArticle 4.
46、1, 4.4.5 RevisedixPage Location ChangeArticle 4.1, 4.6 (1) Subparagraph (a)(3) revised(2) Subparagraph (a)(4) added, andremaining subparagraphsredesignated155 Article 4.1, 5.4 Paragraph 5.4.1 and subhead 5.4.2 added156159 Article 4.1, 5.5.2 Subparagraph (c) revisedArticle 4.1, 6 (1) Subparagraph (c)
47、 revised(2) Subparagraph (e) addedArticle 4.1, 7 Updated160162 Article 4.1, Mandatory Form revisedAppendix I163, 164 Article 4.1, Mandatory Subparagraphs (a) and (b) revisedAppendix II, II-1Article 4.1, Mandatory (1) Subparagraphs (a)(1)(a), (a)(2)(a),Appendix II, II-3 (a)(2)(b), and (b) revised(2)
48、Original subpara. (a)(2)(c)redesignated subpara. (a)(3), originalsubpara. (a)(2)(c)(1) redesignatedsubpara. (a)(3)(a), and originalsubpara. (a)(2)(c)(2) redesignatedsubpara. (a)(3)(b)165 Article 4.1, Mandatory (1) Subparagraphs (c) and (i) revisedAppendix III, III-2 (2) Original second subpara. (f)
49、correctlyredesignated subpara. (g)166 Article 4.1, Mandatory (1) Subparagraphs (c) and (h) revisedAppendix IV, IV-2 (2) Subparagraphs (i)(1) and (i)(2) addedArticle 4.1, Mandatory Word “and” added immediately afterAppendix IV, IV-3 equation in subpara. (c)168, 169 Article 4.1, Mandatory Revised in its entiretyAppendix V170 Article 4.1, Mandatory RevisedAppendix VI, VI-1Article 4.1, Mandatory Subparagraph (c) revisedAppendix VI, VI-2171, 172 Article 4.1, Mandatory Revised in its entiretyAppendix VII173 Article 4.1, Mandatory Subparagraph (b) revisedAppendix VIII, VIII-
