The moment of entry is critical in
confined or enclosed space operations. Injuries from fires, explosions, falls, and
unsafe atmospheres may be avoided with careful preparation and adequate testing.
Note: During shipbuilding operations, the need for testing by a shipyard competent person (SCP) and certified marine chemist (CMC) will depend on the progress of the vessel construction. Until there is a potential for a hazard, such as oxygen deficiency, or after the introduction of flammable materials, testing may not be required.
OSHA requires the following precautions as part of
confined or enclosed space entry: