Tankerman · Safety — Oxygen Analyzer
Before relying on a fixed/portable oxygen analyzer for tank work, the operator must:
- AAssume it reads correctly
- BCover the sensor
- CUse it only after entry
- DCalibrate/zero and span it per the manufacturer and test it in fresh air✓ Correct
Explanation
Gas-measuring instruments must be calibrated and bump/function-tested before use (e.g., verifying 20.9% in fresh air) so atmosphere readings can be trusted for inerting, gas-freeing, and entry decisions. Instruments are used by trained personnel.
Authority: ISGOTT; 29 CFR 1915
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