Before entering an enclosed space

Tanks, void spaces, cofferdams, boilers and crankcases.

1. Entry permit issued by a responsible officer; the bridge and engine room informed.
2. Space isolated: pipes blanked or valves locked, pumps and heaters locked out.
3. Ventilated thoroughly and kept ventilated during the work.
4. Atmosphere tested with a calibrated meter: oxygen 20.9 %, no flammable or toxic gas; repeated during the work.
5. Standby person at the entrance with communication; rescue equipment and breathing apparatus ready.
6. Lighting adequate and safe; personal gas meter carried by those entering.
7. Everyone knows the emergency signal and the rescue plan; nobody enters to rescue without breathing apparatus.
8. After the work: everyone out and counted, tools removed, space closed and the permit cancelled.

Reference only. Follow your company's SMS procedures and the maker's manual. seavint.com/checklists/enclosed-space-entry