CWI Part C D1.1 navigation workflow

Classify the task before looking for a number

Write the requested decision in a few words: find a definition, check a prequalified procedure, establish a tested qualification range, check fabrication or evaluate an inspected weld. Then identify the conditions that might change the route, such as the connection type or whether the work concerns an existing structure.

The course's public sample uses D1.1:2025. The clause references below use that edition as well. Check the Part C edition guide and your examination reference information before applying this map to another edition. This page gives references and study prompts only, without code text or tables.

Use a small route map

The map is an entry point. Finding a familiar heading is not enough to establish the answer. Read the relevant scope, subclause and table notes in your own licensed copy. For the most common Clause 8 lookup, D1.1 visual acceptance criteria, explained shows how to pick the right column and row.

Keep three qualification questions separate

The course treats prequalified WPSs, WPS qualification by test and welder or operator qualification as separate modules. Preserve that separation in your practice notes:

1. Prequalification: identify the conditions you must check before treating the WPS as prequalified.
2. Procedure qualification by test: identify the supporting test record and the range the task asks you to establish.
3. Performance qualification: identify whose qualification is being checked and which performance record and limits matter.

A route to the right clause can still end at the wrong subject. Write “procedure” or “performance” next to the reference before you compare a range or variable.

To practice the comparison itself, work through the WPS and PQR review drill, which sets invented WPSs against their PQRs and welders' WPQs against jobs.

Practice the full lookup, not just the destination

For each study topic, record the task, starting clause, final reference, conditions checked and reason for the answer. Time the whole lookup if you are working on speed. Track whether a slow result came from choosing the wrong starting clause, searching within it or checking the final conditions.

Word search is off in the on-screen reference, and some PDF navigation features may be off too, so practise with the contents and clause numbering instead of relying on search or bookmarks. The Part C exam guide covers the reference arrangements and format.

Turn the result into the next study session

Use the public navigation lesson and practice set to check route selection. If the starting clause is repeatedly wrong, review the map. If the clause is right but the answer is wrong, review scope, conditions and notes. If the error concerns a qualification record, return to the matching qualification module rather than repeating unrelated inspection questions.

Sources

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Study basis: Fillet Gauge's public navigation lesson and course modules on code organization, prequalified WPSs, procedure qualification and performance qualification. Endorsement description checked 17 October 2026.

• Public D1.1 navigation lesson and explained practice set, the D1.1:2025 clause map.
• AWS D1.1 endorsement description, AWS's page on the Part C format and reference arrangements.

Not affiliated with or endorsed by AWS.