The IMO has revised Resolution A.1050(27), introducing updated recommendations for entering enclosed spaces. These changes are now closely tied to the ISM Code, meaning company procedures and risk assessments must reflect the new standards.
Why this matters
Recent findings show that CO₂ can build up even when oxygen levels appear normal, especially in spaces where small leaks allow air exchange. This creates a hidden risk: a space may pass an oxygen test but still be unsafe to enter.
Key points from the revision
- Atmospheric testing must now include CO₂ and other gases, not just oxygen
- Crews should understand which gases may be present and how to interpret readings
- Gas detectors must be maintained, calibrated, and properly documented
- Test results should be linked to entry permits and company risk assessments
