Does AISC fabricator certification require a CWI on staff?

AISC's standard for steel building structures (AISC 207) requires that a responsible person with welding inspection credentials be involved in quality control. In practice, most certified shops have a CWI on staff or on retainer as a third-party inspector. The specific requirement depends on the certification category (STD, SBM, etc.) and the applicable AISC standard.

Can a shop use prequalified WPS from AWS D1.1 Clause 5 for AISC certification?

Yes, provided the prequalified WPS is fully documented per AWS D1.1 Annex M or equivalent, shows all mandatory variables, and is signed by a responsible individual. Auditors frequently find prequalified WPS with incomplete entries — missing position, base metal specification, or joint geometry — which generates findings even when the process itself was correct.

How far back must WPS and PQR records go for an AISC audit?

AISC certification audits review the quality management system and a sample of production records. Typically auditors want to see that records are current and systematic, with PQRs on file for all current WPS in use. For initial certification, demonstrating you can produce any WPS and its supporting PQR on demand is the primary requirement.

What happens if WPQ records are expired at the time of an AISC audit?

Expired WPQs are a direct finding. If production welders cannot demonstrate current qualification for the process and position they are working, the audit report will cite it as a nonconformance. The shop must retest those welders and provide evidence before the finding can be closed.

AISC Fab Certification Audit: WPS/PQR Failures to Fix First

AISC fabricator certification auditors check WPS, PQR, and WPQ records in detail. These are the most common document-control failures that generate audit findings — and how to close them.

AISC fabricator certification covers dozens of categories — standard steel structures (STD), seismic (SBM), bridges, and more — but every audit shares one predictable section: the review of welding procedure documentation. The auditor will request your WPS, the PQRs that support them, and your welders' current qualification records. In nearly every initial certification audit and many renewal audits, that documentation review surfaces findings before the auditor has even walked the shop floor.

This article focuses on the WPS, PQR, and WPQ failures most commonly cited in AISC certification audits — not to describe how to cheat an audit, but because fixing these gaps before you request your first audit saves significant time and the cost of a re-audit visit.

What AISC Certification Checks on Welding Documents

AISC fabricator certification programs draw on AISC 207 (Standard for Steel Building Structures) and reference AWS D1.1 as the technical welding standard. The audit evaluates whether your quality management system ensures that:

All production welding is performed to a current, controlled WPS
Each WPS is supported by a PQR (or is properly documented as prequalified under AWS D1.1 Clause 5)
Welders are currently qualified for the process, position, and material they are performing in production
Qualified inspection personnel are involved in pre-weld, in-process, and final weld inspection
Records of the above are maintained and retrievable

The technical requirements come from D1.1. AISC certification asks whether your shop has a system that reliably meets those technical requirements on every job — not just the good ones.

Common Finding #1: Incomplete Prequalified WPS

AWS D1.1 Clause 5 prequalified WPS requirements are frequently misunderstood as simply "no testing required." The other half of that provision is that the WPS must be fully documented — every mandatory variable filled in, within the prequalified limits, and signed by a responsible individual.

Auditors commonly find prequalified WPS with blank fields: position not stated, electrode diameter range omitted, joint geometry referenced but not drawn, or preheat requirements listed as "per AWS D1.1" with no actual temperature specified. Each blank field is either a finding or a trigger for a clarifying question. If the auditor cannot determine from the WPS alone that the procedure is prequalified and complete, the finding is written.

Fix this before the audit: pull every WPS in your active library and verify that no field is blank or carries a vague cross-reference. Every WPS should stand on its own. For a checklist of what a complete AWS D1.1 WPS must contain, see CWI WPS Review Checklist.

Common Finding #2: Missing or Outdated PQR Test Reports

For tested (non-prequalified) WPS, the auditor will ask for the PQR that supports each procedure. Two failure modes appear consistently:

Missing tensile test reports. The PQR form may record tensile strength values, but the original laboratory test report must be in the file. A PQR that summarizes lab results without attaching the original mill test report or certified test report from an accredited lab is incomplete. If the lab closed, the original was lost, or no one kept the backup, the PQR is not demonstrably valid.

Expired laboratory accreditation. Many shops use the same test lab for years without checking whether its accreditation (typically AASHTO or A2LA) covers the test methods performed and is still current. An auditor may note that the PQR references tensile tests performed under a lab accreditation scope that no longer matches or has lapsed. Requalifying a procedure because of a lab documentation gap — not a process change — is an avoidable cost.

Before your audit, contact the test lab for every existing PQR and confirm current accreditation covers the applicable ASTM test methods. Attach those accreditation certificates to the PQR file. See PQR Tensile and Bend Test Requirements Under AWS D1.1 for details on what mechanical tests must be documented.

Common Finding #3: WPS Variables Outside PQR Qualified Range

A WPS specifies ranges of essential variables. The PQR qualifies those ranges. If the WPS states a base metal thickness range or a heat input range that falls outside what the PQR test coupon actually qualifies, the WPS is not supported by its referenced PQR — even though both documents exist.

This mismatch is common when WPS documents are updated over time (new position added, heat input range expanded) without generating a new test coupon or referencing an additional PQR. The WPS looks current; the PQR is genuine; but together they do not constitute a valid qualified procedure for the claimed range.

The fix is a systematic audit of your own WPS library. For each WPS, verify that every claimed range on the WPS front sheet falls within the ranges supported by the PQR(s) it references. Pay specific attention to base metal thickness, filler metal classification, and heat input. For a walkthrough of how qualified ranges work, see WPS Qualification Range: Thickness and Position Under AWS D1.1.

Common Finding #4: WPQ Records Expired or Missing

Every production welder must hold a current qualification for the process, position, material group, and diameter range they are performing. Under AWS D1.1, a welder who has not used a process for 6 months requires requalification for that process. Additionally, if the shop cannot produce the original WPQ test record, there is no documented basis for the welder's qualification.

Two specific failure modes appear:

6-month continuity gap not tracked. Shops with seasonal workloads or welders who rotate between processes may not notice when a welder's last use date for a specific process has crossed the 6-month threshold. If that welder is listed on a job's quality record as qualified for a process, and the auditor computes the elapsed time from the WPQ continuity log, an expired qualification is a direct finding.

WPQ on file for terminated employee still referenced in production records. Job-specific weld records sometimes reference a welder whose WPQ is on file but who is no longer employed. While this does not necessarily indicate a quality failure in the past work, it points to a records management system that lacks current-employee reconciliation.

The solution is a welder qualification matrix that is updated continuously — not just at audit time — and that shows last-use dates by process and position. Welder continuity tracking software that alerts QC staff before the 6-month window closes is particularly effective. See AWS D1.1 Welder Continuity: 6-Month Rule Explained for the D1.1 technical requirement and Welder Qualification WPQ Traceability for how to build the records system.

Common Finding #5: WPS Not Controlled or Accessible at Point of Use

AISC certification audits typically include a shop floor walk. The auditor will stop at a welding station and ask the welder for the WPS governing their current work. Failure modes:

No WPS posted or accessible at the station
WPS on the station is a revision different from the current controlled document
Welder cannot identify which WPS applies to their current joint

Each of these is a finding. The fix is a controlled WPS distribution system — whether paper or digital — that ensures the current revision is the only version at the point of use, and that welders can identify which WPS covers their assignment. Revision-controlled paper systems need a "retrieve all obsolete copies" procedure every time a WPS is updated. Digital systems handle this automatically when welders pull the current WPS from a central repository. WPS Revision Control Best Practices covers the distribution control mechanics.

Building an Audit-Ready Document Package

The pattern across all five findings is the same: the technical welding may have been correct, but the documentation either does not exist, is incomplete, or is not maintainable as a system. An AISC audit evaluates the system — not just the individual documents.

A structured audit-ready package for welding documentation includes:

WPS index — every active WPS identified by number, revision, applicable process, material groups, and positions; each entry cross-referenced to its supporting PQR
PQR file — for each PQR: the completed form, original lab test reports with lab accreditation certificates, witness sign-offs
WPQ log — current qualification status by welder and process, with last-use dates and expiration tracking
Inspection records index — pre-weld, in-process, and final inspection sign-offs retrievable by job number and joint identification

Shops that manage this in digital form can produce any record in seconds during an audit. Shops that run paper-based systems can be compliant, but the retrieval burden under audit pressure is significant. If your current system would require hours of searching to produce a specific PQR during an audit, that is a workflow problem worth solving before your certification visit — see wpswelding.com/pricing for tools purpose-built for this.

Summary

AISC certification audits consistently surface the same five WPS/PQR documentation failures: incomplete prequalified WPS, missing or unaccredited PQR test reports, WPS variables outside qualified range, expired WPQ records, and uncontrolled WPS distribution at point of use. None require process changes — they are system problems. A pre-audit self-assessment using this checklist will close most findings before the auditor arrives.