Add Gas / Environment Measurements
Supporting action. Available on a permit in most active states (not in Request, Awaiting Validation, Awaiting Verification, Awaiting Authorisation, Overdue or Closed). It does not change the permit status, but it can gate the Issue.
Record the required gas or environmental measurements on a permit.
When to use
Use this task when the permit requires environment measurements — in particular when a substance is set as Initial, which must be measured before the permit can be issued (Issue a Permit).
Before you start — check before launching the task
- You hold the Authorised Environment Tester role (typical positions: Production Operator, Assistant Safety & Environment).
- You have the calibrated instrument and the substances to measure.
Step-by-step
- Open the permit and select Add Measurements.

- Record the value for each required substance. When a substance is flagged Initial, its measurement is mandatory before Issue (the PCA cannot issue without it).

- Sign as Authorised Environment Tester.
Expected result
The measurements are recorded against the permit; the permit status is unchanged.
Key Referentiel rules
- A permit's risk analysis includes the products present or potentially present; measurements verify the atmosphere before and during work. (CR-GR-HSE-402, Req 3.2.1)
- For confined space entry, atmosphere testing is required in line with CR-GR-HSE-429. (CR-GR-HSE-402, Appendix 2)
Tips & pitfalls
Tip — measure before issue when Initial. A missing Initial measurement blocks the Issue.
Pitfall — using an uncalibrated instrument. Record measurements only from a valid device.
Common mistakes
| Mistake | Consequence |
|---|---|
| Skipping a required Initial measurement | Issue blocked |
| Recording a value from a faulty instrument | Unsafe atmosphere assumption |