An inspection and test plan with hold and witness points
The membrane trade is ready for testing, but the consultant expected to attend tomorrow. The next crew has already booked the area for covering. Nobody agreed whether work could proceed if the observer could not attend.
List each required inspection or test with its acceptance reference, responsible people, notice and release conditions. Agree which points hold the next activity and which give someone an opportunity to witness it. Those labels need a project-specific meaning. Do not assume that calling a check a witness point gives the crew permission to continue without meeting the contract's notice or acceptance requirements.
- Build the list from the specification, drawings, approved procedures and authority requirements. Arrange it in work sequence so the trade can see the checks that precede covering, loading or start-up.
- For every row, identify the location or lot, the check method and the current acceptance reference. Ask the responsible specialist to resolve missing criteria rather than writing a convenient field rule.
- Name who performs the check, who may witness it and who reviews or accepts the result. Keep the trade's own inspection distinct from another party's attendance.
- Define hold and witness points with the project team in writing. State the required notice, what happens if an observer does not attend, and who can authorize release.
- Link each point to a record form and the construction schedule. Confirm the test resources, safe access and necessary personnel before the notice is sent.
- Before moving to the next stage, verify the result and required release. Record deferred checks or agreed exceptions explicitly so an empty signature box does not become assumed permission.
Common mistakes
- Giving every check the same notice even when different parties require different arrangements.
- Using pass/fail boxes without identifying the acceptance reference.
- Treating an unattended witness point as an automatic waiver.
- Signing the entire plan at the end instead of recording each location's result.
Checklist
Before the first test
- Sequence and locations identified
- Method and acceptance reference
- Performer, observer and reviewer
- Notice and non-attendance procedure
- Hold release recorded
- Result linked to the next activity
Check your understanding
A witness-point observer does not arrive after your notice. Can the trade proceed?
Show the answer
Follow the written project procedure for non-attendance and confirm that the notice was valid. Check whether technical acceptance or another release is still required. The word 'witness' alone does not answer either question.
