Before allowing access to the space, the Responsible Officer should ensure that:
- Appropriate atmosphere checks have been carried out.
- Piping, inert gas and ventilation systems have been isolated.
- Effective ventilation will be maintained continuously while the enclosed space is occupied.
- Fixed lighting, such as air-turbo lights are ready for extended entry periods.
- Approved self-contained, positive pressure breathing apparatus and resuscitation equipment is ready for use at the entrance to the space.
- A rescue harness, complete with lifeline, is ready for immediate use at the entrance to the space.
- A fully charged approved safety torch is ready for immediate use at the entrance to the space.
- A responsible member of the crew is in constant attendance outside the enclosed space, in the immediate vicinity of the entrance and in direct contact with the Responsible Officer.
- All persons involved in the operation should be trained in the actions to be taken in the event of an emergency.
- Lines of communications have been clearly established and are understood
by all concerned.
- Names and times of entry will be recorded and monitored by personnel outside the space.
The personnel undertaking the task should ensure that such safeguards are put into effect prior to entering the space. The same precautions apply as for entering cargo tanks. Toxic gas must be suspected to be present in spaces into which volatile petroleum may have leaked.