Quality control checklist: building checks inspectors actually follow

A quality control checklist is the list of checks an inspector performs, in order, to decide whether a product, batch or piece of work is acceptable. It exists because specifications are written for designers and checklists are used by people standing next to the product. A good checklist is short enough to follow every time, specific enough that two inspectors reach the same result, and linked to what happens when something fails.

What a quality control checklist should include

• What is being inspected, with part or product number and revision.
• Each check as a specific, observable question — "label present and legible", not "packaging OK".
• The acceptance criterion for each check, or a reference to the limit.
• The method or tool: visual, gauge, sample size, test.
• A result field per check — pass, fail, or a measured value.
• The action on failure and who must be notified.
• Inspector name, date and final disposition.

Checklists by inspection stage

1. Incoming inspection: supplier documents and certificates, quantity, packaging condition, identification, and sample checks against the purchase specification.
2. In-process inspection: the critical characteristics at the points where defects are created, checked at a defined frequency.
3. Final inspection: completeness, function, appearance, labelling and documentation before release.
4. Construction and installation work: stage-by-stage checks before each element is covered up, with photographs as evidence.

Put the highest-risk checks first. Inspectors under time pressure skip what comes last; make sure what comes last is least likely to matter.

QA QC checklist: keep assurance and control distinct

Quality control checks the product; quality assurance checks the system that makes it. A QA QC checklist mixing the two tends to do neither well. Keep product checks on the inspection checklist used at the station, and system checks — procedures followed, records complete, training current — on an audit checklist used periodically. Both can live in the same quality management system without sharing a form.

Make the checklist usable on the floor

A checklist on paper gets photocopied, annotated and outdated. As a form it can require every check before submission, capture photos of defects, and time-stamp who inspected what. Ettex Forms supports that structure, and completed inspections land in Ettex Records where failures can be filtered by product, check or inspector. Failed checks should trigger a non-conformance report rather than a note in the margin, and recurring failures belong in corrective action.

Reviewing whether the checklist works

• Checks that never fail may be checking the wrong thing — or controlled elsewhere.
• Defects found by customers but not on the checklist show a gap.
• Different pass rates between inspectors on the same check show an unclear criterion.
• Checks routinely left blank are too slow or unclear.
• Revise the checklist after every significant defect and record the revision.