CSA Z662 Compliance for Inspection Service Providers

NDT and inspection contractors on oil and gas pipeline construction, maintenance and integrity work in Canada, and the pipeline companies that hire them. Personnel certification is central or third-party here, so the firm cannot certify its own technicians internally.

Because CSA Z662 is incorporated by reference into the Canada Energy Regulator's Onshore Pipeline Regulations and adopted provincially, its inspection clauses carry the force of law for federally and provincially regulated pipelines alike. CSA Z662:23, the ninth edition, was released on 30 June 2023 and covers pipelines from design through construction, operation, maintenance, deactivation and abandonment, with a new clause for hydrogen and hydrogen-blend systems. For an inspection service provider the operative content sits in Clause 7: mandatory non-destructive inspection extents, documented and company-approved NDI procedures, standards of acceptability, production and retention of radiographs, and ultrasonic inspection of circumferential butt welds. Personnel qualification is pinned to CAN/CGSB-48.9712 — radiographers, with radiographic image interpretation at Level 2 or 3, and ultrasonic inspectors at Level 2 or 3. Since the 2019 edition a CGSB Level 3 must review and approve non-destructive inspection procedures.

Source: Verified August 2026 against: CSA Z662:23, ninth edition, released 30 June 2023, per CSA Group and ANSI Webstore listings, which record it as superseding the 2019, 2015, 2011, 2007, 2003, 1999, 1996 and 1994 editions; Canada Energy Regulator Information Advisory IA 2023-001, confirming the 30 June 2023 in-force date and incorporation by reference through section 4 and paragraph 4(1)(d) of the Onshore Pipeline Regulations; the CSA Z662:19 table of contents, confirming clause numbering for 7.10, 7.11, 7.14 (including 7.14.8 Radiographers and 7.14.9) and 7.15 (including 7.15.6 Qualification of ultrasonic inspectors); and the verbatim text of Clauses 7.10.2, 7.10.3, 7.10.4, 7.14.8 and 7.15.6 read from a CSA Z662-11 excerpt filed as exhibit 76 in South Dakota PUC docket HP14-001. Clause numbering was unchanged between those editions, but inspection percentages and ultrasonic reference levels should be confirmed against the edition in force. The requirement for a CGSB Level 3 to review and approve non-destructive inspection procedures is reported in the Z662:19 and Z662:23 change summaries published by standards distributors; it was not read from the clause text and should be confirmed against a purchased copy before it is relied on contractually.

Who does CSA Z662 apply to?

NDT and inspection contractors on oil and gas pipeline construction, maintenance and integrity work in Canada, and the pipeline companies that hire them. Because CSA Z662 is incorporated by reference into the Canada Energy Regulator's Onshore Pipeline Regulations and adopted provincially, its inspection clauses carry the force of law for federally and provincially regulated pipelines alike.

Can an outsourced Level III sign for CSA Z662 compliance?

Not for the certification itself. CSA Z662 requires central or third-party personnel certification, so technicians are certified by the scheme rather than by the employer. A consulting Level III still adds value on procedures, documentation, gap assessment and audit attendance — but cannot substitute for the scheme's own certification.

What documents does a CSA Z662 audit ask for?

Documented non-destructive inspection procedures, approved by the company and reviewed and approved by a CGSB Level 3, Documented visual inspection procedures covering extent and frequency of visual inspection, personnel qualification and visual acuity, maximum viewing distance and angle, lighting conditions, evaluation tools and reporting (Clause 7.10.2.1), Visual inspection reports carrying weld identification, description, position and length of defects, date, and the signature of the qualified visual inspector (Clause 7.10.2.3), Visual inspection records retained until the piping is abandoned (Clause 7.10.2.4) and radiographic records retained per Clause 7.14.9, Ultrasonic calibration and reference-level records — reference at 80% full screen height and recording at 40%, six decibels below reference, in the edition verified. Auditors open records before they open manuals, because a manual describes intent while records show practice. The most common failure is a documented system that does not match what the technicians actually do.

How often is CSA Z662 renewed?

CSA Z662 is revised on a roughly four-year cycle — 1994, 1996, 1999, 2003, 2007, 2011, 2015, 2019, 2023 — and Z662:23 is the ninth edition, released 30 June 2023. Because the Onshore Pipeline Regulations incorporate the latest version by reference, a new edition takes effect on publication rather than on an adoption date. The Canada Energy Regulator's Information Advisory IA 2023-001 told companies to review Z662:23 and take the steps needed to comply as soon as possible, and to demonstrate for pending applications how projects would meet the new requirements. There is no certificate to renew under this regime; what expires is the personnel certification behind it and the currency of the procedures written to it. Firms that diarise renewal from the certificate date rather than from the last audit avoid the lapse that forces a full reapplication.

What are the most common CSA Z662 findings?

Non-destructive inspection procedure approved by an ASNT Level III rather than by a CGSB Level 3, Radiographic image interpretation performed by a Level 1 where Clause 7.14.8.1 requires Level 2 or 3, Visual inspection procedure silent on maximum viewing distance and angle, lighting conditions or evaluation tools, all of which Clause 7.10.2.1 requires it to address, Visual inspection reports missing the signature of the qualified visual inspector required by Clause 7.10.2.3. These recur because they are records problems rather than capability problems — the work is being done correctly and the evidence is not being kept.

Which NDT methods does CSA Z662 cover?

RT, UT, MT, PT, VT. Each method in scope needs its own approved procedure and personnel qualified in that specific method; a Level III qualified in ultrasonics cannot sign for radiography.

Related: the CSA Z662 overview, outsourced ASNT Level III cover, written practice development, NDT procedure development, a programme gap assessment, interim Level III cover.