ASME_PCC-2-2011.pdf

AN AMERICAN NATIO NAL STANDARDRepair of Pressure Equipmentand PipingASME PCC-22011(Revision of ASME PCC-22008)Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:$*$:INTENTIONALLY LEFT BLANKCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:$*$:ASME PCC-22011(Revision of ASME PCC-22008)Repair ofPressureEquipmentand PipingAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016 USACopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:$*$:Date of Issuance:April 28,2011This Standard will be revised when the Society approves the issuance of a new edition.This Standardwill become effective 6 months after the Date of Issuance.There will be no addenda issued to thisedition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisdocument.Interpretations are published on the ASME Web site under the Committee Pages athttp:/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 NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput 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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor 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 with 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 individuals.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 EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2011 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:$*$:CONTENTSForeword.ivPreparation of Technical Inquiries.vCommittee Roster.viSummary of Changes.viiPart 1Scope,Organization,and Intent.1Part 2Welded Repairs.5Article 2.1Butt-Welded Insert Plates in Pressure Components.5Article 2.2External Weld Overlay to Repair Internal Thinning.11Article 2.3Seal-Welded Threaded Connections and Seal Weld Repairs.17Article 2.4Welded Leak Box Repair.19Article 2.5Welded Lip Seals(in the course of preparation).23Article 2.6Full Encirclement Steel Reinforcing Sleeves for Piping.24Article 2.7Fillet Welded Patches With Reinforcing Plug Welds.31Article 2.8Alternatives to Traditional Welding Preheat.37Article 2.9Alternatives to Postweld Heat Treatment.42Article 2.10In-Service Welding Onto Carbon Steel Pressure Components orPipelines.45Article 2.11Weld Buildup,Weld Overlay,and Clad Restoration.57Article 2.12Fillet Welded Patches.63Article 2.13Threaded or Welded Plug Repairs.68Article 2.14Field Heat Treating of Vessels.71Part 3Mechanical Repairs.79Article 3.1Replacement of Pressure Components.79Article 3.2Freeze Plugs.81Article 3.3Damaged Threads in Tapped Holes.86Article 3.4Flaw Excavation and Weld Repair.96Article 3.5Flange Repair and Conversion.102Article 3.6Mechanical Clamp Repair.105Article 3.7Pipe Straightening or Alignment Bending.109Article 3.8Damaged Anchors in Concrete(Postinstalled Mechanical Anchors).112Article 3.9Valves With Pressure-Seal-Type Bonnets(in the course of preparation).121Article 3.10Hot Bolting(in the course of preparation).122Article 3.11Hot and Half Bolting Removal Procedures.123Article 3.12Inspection and Repair of Shell and Tube Heat Exchangers.127Part 4Nonmetallic and Bonded Repairs.139Article 4.1Nonmetallic Composite Repair Systems:High-Ris