What precaution to be taken when entring ballast or fuel oil tanks?

When entering ballast or fuel oil tanks, it is crucial to ensure proper ventilation to prevent the accumulation of hazardous gases. Workers should use personal protective equipment (PPE), including gloves, goggles, and respiratory protection, as needed. Additionally, a permit-to-work system should be in place, and a buddy system is recommended to ensure safety during the entry. Always conduct a thorough inspection of the tank for any potential hazards before entry.