The International Maritime Organization (IMO) has issued new guidelines that place greater emphasis on safety management in confined spaces aboard ships. Confined spaces refer to areas that may have hazardous atmospheres or oxygen deficiency, with limited access and inadequate ventilation. These spaces include cargo tanks, ballast and fuel tanks, pump rooms, void spaces, and other similar areas.
Hazards of Entering Confined Spaces
Entering confined spaces is considered a high-risk activity that requires careful planning, risk assessment, and strict adherence to established procedures. Despite the existence of numerous guidelines and training, accidents still occur in the maritime industry. Investigations show that most of these accidents stem from poor judgment and inadequate hazard recognition. Individuals may enter a space assuming it is safe and be exposed to low-oxygen or toxic atmospheres.
Key Changes in IMO Guidelines
The new IMO guidelines emphasize the necessity of assessing, testing, and verifying the safety of confined spaces before entry. This approach should be implemented continuously, regardless of prior experience with the space or operational pressures. Additionally, entry into these spaces is expected not to be treated as an independent activity, and all entries must be properly planned and controlled. The presence of a trained individual who is always on-site and has the authority to stop operations if conditions worsen is mandatory.
Furthermore, the new guidelines introduce and clarify key definitions for better hazard identification and risk assessment. Hazards may arise from connected or adjacent spaces and must be considered in the assessment. To enhance safety, gas detection equipment should be regularly maintained and calibrated, and tests should be conducted by qualified personnel.
Finally, attention to the atmospheric conditions of confined spaces and conducting atmospheric tests before and during occupancy of these spaces should be regarded as a critical principle in maritime operations.
