A confined space is defined as an area which:

The OSHA regulation for confined space is:

The ASSE Series 5000 Cross-connection Control Professional Qualifications Standard lists confined space as a safety issue for backflow testers.

The minimum number of individuals required to be present at a permit required confined space entry is:

A permit required confined space is always located below grade or ground.

According to OSHA regulations the minimum percentage of oxygen within a confined space which would be considered hazardous is:

According to OSHA regulations the maximum percentage of oxygen within a confined space which would be considered hazardous is:

According to OSHA regulations oxygen levels above _______ are considered oxygen enriched.

When testing the oxygen level in a permit required confined space you should test the following area/areas:

Methane gas is heavier than air.

50% of workers who die in confined spaces are would be rescuers.

Which of the following is not a factor in determining if a location should be considered a permit required confined space?

Entry into a permit required confined space is considered to have occurred as soon as any part of the entrant's body breaks the plane of an opening into the space.

During a permit required confined space entry, the designated attendant must:

According to OSHA regulations a mechanical device must be available to retrieve an individual from a permit required space more than _____ vertical feet deep.