CSWIP (Certification Scheme for Welding and Inspection Personnel)
CSWIP is the UK third-party certification scheme operated by TWI Certification for welding inspectors, NDT personnel, and other welding-industry roles, widely recognized in oil & gas and offshore industries worldwide.
Definition
CSWIP 3.0, 3.1, 3.2, and 3.2.2 are the most common welding-inspector grades, parallel to AWS Certified Welding Inspector (CWI). CSWIP NDT certifications operate under ISO 9712 like PCN.
What this document is
A UK third-party certification scheme operated by TWI Certification covering welding inspection, NDT and related roles, with examination and certification carried out independently of the employer.
How it is applied
Third-party certification means the certificate travels with the individual and is verifiable by any employer, which is why it is widely specified in oil and gas and offshore contracting. Welding inspector grades are structured in ascending scope, and NDT certification within the scheme operates under ISO 9712.
Related documents
ISO 9712 for the NDT certification framework; the CSWIP scheme documents for each grade's scope, eligibility and renewal requirements.
The common misuse
Assuming CSWIP and employer-based SNT-TC-1A certification are interchangeable on a contract. They are different models — third party versus employer-certified — and specifications frequently require one specifically.
Frequently asked questions
Is CSWIP equivalent to AWS CWI?
They are comparable in standing and both are widely recognised, but they are separate schemes with different syllabuses, examination formats and renewal rules. Which is accepted is a contractual question, and some owners name one explicitly.
Does CSWIP expire?
Yes. Certification runs for a defined period and requires renewal, with evidence of continued relevant activity and, at longer intervals, re-examination. Lapsed certification generally cannot simply be reinstated.
Where CSWIP fits in an inspection programme
A term is only useful when it connects to a decision. CSWIP appears in written procedures, in technique sheets, and in the records an owner or accreditation body reviews afterwards — which means the way it is defined in your documentation has to match the way it is applied on site. Where the two drift apart, audits find it. Atlantis writes and reviews procedures against the governing codes, trains inspection personnel to apply them, and builds the record-keeping that makes the evidence retrievable years later. Procedure development and code consulting · NDT training and certification · Ask us about your programme.
Related terms
- PCN (Personnel Certification in Non-Destructive Testing) — PCN is the UK third-party NDT personnel certification scheme operated by the British Institute of NDT (BINDT) under ISO 9712, providing internationally-recognized Level I, II, and III certificates valid for 5 years.
- ISO 9712 NDT Personnel Qualification — ISO 9712 is the international standard for qualification and certification of NDT personnel, defining a third-party central-certification model in which an accredited body conducts written and practical examinations independent of the employer.
- NDT Level II — An NDT Level II is qualified to set up and calibrate equipment, conduct examinations to procedures, interpret and evaluate results against acceptance criteria, and report results — the standard certification level for production inspectors.
Further reading
cwi certification requirements cost career impact
More standard terms
ASME Section V · ASME Section VIII · ASME Section IX · ASME Section XI · ASME B31.1 Power Piping · ASME B31.3 Process Piping · ASME B31.8 Gas Transmission and Distribution Piping · ASME B31.4 Liquid Pipelines · API 510 Pressure Vessel Inspection Code · API 570 Piping Inspection Code
Where this comes up in practice
Terms like this one appear in three places that matter commercially: the written practice that governs how your personnel are qualified, the procedures and technique sheets that define how an examination is actually performed, and the evidence an auditor or client asks for when they want to know why an inspection was accepted. Getting the terminology right is the easy part; being able to produce the qualification record, the calibration traceability and the procedure revision that applied on the day of the inspection is the part that decides audits.
Atlantis NDT provides NDT training and certification against ASNT SNT-TC-1A and ISO 9712, ASNT Level III consulting for written practices and procedure approval, inspection management software that holds qualification, calibration and procedure-revision evidence in recoverable form, and an asset integrity platform that binds inspection results to the asset they describe. Browse the full NDT glossary or ask a Level III directly.