Confined Space Safety Quiz

What is a confined space?

• A space that is always safe to enter

• A space with no entry or exit points

• A space large enough for a person to enter and work

• A space designed for continuous occupancy

Which of the following is NOT a characteristic of a permit-required confined space?

• Has inwardly converging walls

• Is designed for continuous employee occupancy

• Has a potential for engulfing an entrant

• Contains a hazardous atmosphere

What is the minimum acceptable oxygen level for work without an air-supplied respirator?

• 19.5%

• 21%

• 15%

• 18%

What should be done before entering a confined space?

• Conduct a pre-entry briefing

• Only check for physical hazards

• Ignore atmospheric conditions

• Enter immediately if the space looks clear

Who is responsible for monitoring the entrants during the job?

• The rescue team

• The attendant

• The supervisor

• The entrant

What type of hazards can be present in confined spaces?

• Only electrical hazards

• Only atmospheric hazards

• Atmospheric, physical, and mechanical hazards

• Only physical hazards

What is the role of the entry supervisor?

• To provide first aid to entrants

• To monitor atmospheric conditions

• To coordinate the entry into the confined space

• To perform the work inside the confined space

Which of the following is a common atmospheric hazard in confined spaces?

• Vibration

• Excessive noise

• Poor lighting

• Toxic gases

What should be done if harmful levels of contaminants are found in a confined space?

• Ignore the readings

• Ventilate the space to remove them

• Seal the space and leave

• Enter without any precautions

What is the purpose of a confined space entry permit?

• To allow anyone to enter the space

• To ensure all safety measures are followed before entry

• To document the work done inside the space

• To provide a checklist for cleaning the space