Module 10: Permit-Required Confined Spaces

Which of the following conditions must be met for an area to be classified as a confined space?

• Limited or restricted means for entry or exit

• Large enough for an employee to enter and perform assigned work

• Not designed for continuous employee occupancy

• All of the above

A permit-required confined space has one or more of the following characteristics EXCEPT:

• Contains or has the potential to contain a hazardous atmosphere

• Contains a material that has the potential to engulf an entrant

• Is designed for continuous employee occupancy

• Has an internal configuration that could trap or asphyxiate an entrant

Before an employee enters a permit-required confined space, the internal atmosphere must be tested for:

• Oxygen content

• Flammable gases and vapors

• Potential toxic air contaminants

• All of the above

The role of the attendant during a confined space entry includes:

• Entering the space to assist the entrant

• Monitoring the space from outside and summoning rescue if needed

• Performing the same tasks as the entrant

• None of the above

Which of the following 3 are responsibilities of the confined space entry supervisor?

• Verifying that appropriate entries have been made on the permit

• Terminating the entry and canceling the permit when required

• Performing atmospheric testing within the confined space and then entering before the ot

• Ensuring that rescue services are available and can be summoned

An oxygen-deficient atmosphere is defined as having an oxygen concentration below:

• 19.5%

• 20.8%

• 21.5%

• 23.5%

Which of the following is a common hazard associated with confined spaces?

• Toxic atmospheric conditions

• Engulfment

• Mechanical hazards

• All of the above

Prior to entry, a confined space must be evaluated by:

• The entrant

• The attendant

• A competent person

• Any available employee

Continuous atmospheric monitoring during a confined space entry is:

• Optional

• Required whenever possible

• Only necessary if the initial test shows hazards

• Prohibited

If an emergency occurs during a confined space entry, the attendant should:

• Enter the space to rescue the entrant

• Summon rescue services immediately

• Ignore the situation

• Wait for the entrant to self-rescue