ASME PCC-2: Repair of Pressure Equipment and Piping
Code for repair of pressure vessels and piping specifying inspection and NDT requirements. ASME PCC-2 ensures repairs meet original code requirements.
The American Society of Mechanical Engineers (ASME) writes the boiler, pressure vessel, and piping codes that almost every U.S. jurisdiction has adopted by reference into law.
For pressure equipment built or operated in the United States, ASME compliance is rarely optional — state boiler-and-pressure-vessel inspectors enforce it directly.
ASME PCC-2 is invoked when the scope of work matches its title — repair of pressure equipment and piping — and when the contract or regulatory regime cites it as the controlling document. In power and nuclear work, the inspection plan is built directly off the standard's tables; an auditor will cite the paragraph that was followed (or the one that was missed) when writing a finding. On petroleum and petrochemical equipment, ASME PCC-2 usually feeds into a written mechanical-integrity program: inspection intervals, examination methods, and acceptance criteria are all traced back to a clause number in the document. In fabrication shops the standard is reproduced inside the written procedure book and referenced from every inspection report so that the auditor's paper trail leads back to the same paragraph the inspector worked from.
Methods covered
Industries
- Power Generation
- Oil & Gas
- Manufacturing
- Personnel qualification: examinations under ASME PCC-2 must be performed by inspectors qualified and certified to a recognised scheme (typically ASNT SNT-TC-1A, CP-189, or ISO 9712 depending on jurisdiction), with documented training hours, vision tests, and a controlling written practice.
- Written procedure: every examination requires a written, controlled procedure that names the method, equipment, calibration steps, scanning pattern, and acceptance criteria — and is qualified before first use.
- Acceptance criteria: indications are evaluated against the standard's tabulated limits (length, depth, alignment, frequency); any indication exceeding the criteria is recorded, dispositioned, and either repaired or evaluated for fitness-for-service.
- Documentation: examination reports must include enough information for a third party to reproduce the inspection — equipment serial numbers, calibration records, inspector ID, sketches of indications, and the controlling procedure revision.
- Code reference and edition: the ASME edition in force at the time of construction (or as amended by jurisdictional adoption) controls the rules; inspection records must cite the edition and addenda that were applied.
ASME publishes a new edition of its codes on a fixed three-year cycle (with addenda and code cases issued between editions). Recent editions of ASME PCC-2 have generally tightened personnel qualification language, expanded coverage of advanced ultrasonic methods (PAUT, TOFD) as accepted alternatives to radiography, and clarified the treatment of digital radiography and computed radiography. Inspection records should always cite the specific edition and addenda that were applied — codes are not retroactive, but new construction is always to the current edition unless a contract freezes an earlier one.
A typical refinery turnaround applies ASME PCC-2 to the inspection scope for high-temperature piping and pressure vessels: corrosion-monitoring locations are read with UT thickness gauges, girth welds on repaired sections are radiographed or PAUT-scanned, and any indication outside the standard's acceptance table is dispositioned through API 579 fitness-for-service before the unit restarts.
What does ASME PCC-2 cover?
ASME PCC-2 (Repair of Pressure Equipment and Piping) is published by ASME. Code for repair of pressure vessels and piping specifying inspection and NDT requirements.
Is ASME PCC-2 mandatory or voluntary?
ASME PCC-2 is a consensus standard. It becomes mandatory when invoked by a contract, by another code that cites it (for example ASME Section V calling out an ASTM practice), or by a regulator that has adopted it into law in a specific jurisdiction.
Who is qualified to perform inspections under ASME PCC-2?
Inspections under ASME PCC-2 must be performed by personnel qualified and certified to a recognised NDT certification scheme — most commonly ASNT SNT-TC-1A or CP-189 in the United States, ISO 9712 in much of the rest of the world, and NAS 410 for aerospace work. The written practice that controls qualification must be in place before any examination is started.
Which edition of ASME PCC-2 should I use?
New construction follows the edition of ASME PCC-2 in force at the time the contract is signed (or the edition adopted by the controlling jurisdiction). In-service inspection generally follows the edition that was in force when the equipment was built, unless the operator's mechanical-integrity program adopts a later edition by reference.
Standard Code
ASME PCC-2
Organization
ASME
Methods Covered
1 method(s)
Industries
3 sector(s)
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