CHST Confined Space Entry and Rescue 3

Question 1

Three characteristics that define a 'confined space' under OSHA include all of the following EXCEPT:

Accepted Answer

Contains electrical or mechanical hazards

Answer

The three OSHA defining characteristics of a confined space are: large enough to enter and work in, limited entry/exit, and not designed for continuous occupancy—electrical hazards describe a hazard type, not a defining characteristic.

Question 2

When must the atmosphere of a permit-required confined space be monitored during entry operations?

Accepted Answer

Continuously throughout the duration of all entry operations

Answer

OSHA requires continuous atmospheric monitoring throughout all confined space entry operations because conditions can change rapidly due to work activities, material movement, or other factors.

Question 3

What retrieval system components are required when workers enter a permit-required confined space where non-entry rescue may be needed?

Accepted Answer

Full-body harness and wristlets connected to a retrieval line and mechanical lifting device outside the space

Answer

OSHA requires full-body harnesses and wristlets connected to a retrieval line attached to a mechanical device or fixed point outside the space to enable non-entry rescue without exposing rescuers to the same hazards.

Question 4

Under what circumstance is it permissible for the confined space attendant to enter the permit space?

Accepted Answer

Never — the attendant must not enter the permit space under any circumstances

Answer

Attendants are strictly prohibited from entering the permit space to perform rescue; their role is to summon emergency rescue services while remaining outside to prevent creating additional victims.

Question 5

An entrant working inside a permit-required confined space notices an unusual odor and begins to feel dizzy. What is the correct immediate action?

Accepted Answer

Immediately exit the space and notify the attendant

Answer

Entrants must immediately self-rescue by exiting the space upon any warning sign of a hazardous condition; delay risks incapacitation and death as atmospheric conditions can deteriorate within seconds.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST Confined Space Entry and Rescue 3