ASME PCC-2 provides methods for repair of equipment and piping within the scope of ASME Pressure Technology Codes and Standards after it has been placed in service. These repair methods include relevant design, fabrication, examination, and testing practices and may be temporary or permanent, depending on the circumstances. The methods provided in this Standard address the repair of components when repair is deemed necessary based on appropriate inspection and flaw assessment. These inspection and flaw evaluation methods are not covered in this document, but are covered in other post-construction codes and standards. Only technical procedures and information are provided; administrative or policy requirements are outside of the scope of this Standard. Key changes to this revision include a new supplemental article on repair welding considerations for Cr-Mo steel pressure vessels, and updates to Article 2.2 on External Weld Buildup to Repair Internal Thinning and Article 4.1 on Nonmetallic Composite Repair Systems: High Risk Applications. ASME PCC-2 serves as a companion to the other codes in ASME?s PCC series. Together, they remain essential references for anyone engaged with pressure equipment and piping. Careful application of these ASME PCC codes will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benets to be gained from the many industry best-practices detailed within these volumes. Intended for repair, maintenance, owners, regulators, inspectors, manufacturers, designers, and operators of pressure equipment and piping, plus all potential governing entities.