COLORADO CONFINED SPACE ENTRY
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
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1. What defines a confined space?
A. Large open work area
B. Enclosed space with limited entry/exit and not designed for
occupancy
C. Office room
D. Outdoor trench
Rationale: Confined spaces have restricted access and are not
intended for continuous occupancy.
Correct Answer: B
2. Which is NOT a confined space hazard?
A. Oxygen deficiency
B. Toxic gases
C. Proper lighting
D. Engulfment
Rationale: Proper lighting is not a hazard.
Correct Answer: C
3. What is a permit-required confined space?
A. Any basement
B. Space with recognized serious hazards
C. Any workspace
,D. Open field
Rationale: Permit spaces contain hazards requiring control.
Correct Answer: B
4. First step before entry is?
A. Enter immediately
B. Atmospheric testing
C. Eat lunch
D. Install tools
Rationale: Testing ensures safe atmosphere.
Correct Answer: B
5. Minimum oxygen level safe for entry?
A. 10%
B. 15%
C. 19.5%
D. 25%
Rationale: OSHA safe range begins at 19.5%.
Correct Answer: C
6. Maximum safe oxygen level?
A. 30%
B. 21.5%
C. 19.5%
D. 10%
Rationale: Above 23.5% increases fire risk.
Correct Answer: B
7. Who authorizes confined space entry?
A. Any worker
, B. Entry supervisor
C. Visitor
D. Vendor
Rationale: Supervisor approves permits.
Correct Answer: B
8. What must be completed before entry?
A. Permit system
B. Payroll form
C. Inventory list
D. Time sheet
Rationale: Entry permit is mandatory.
Correct Answer: A
9. Primary purpose of atmospheric testing?
A. Noise control
B. Identify hazards
C. Painting
D. Lighting
Rationale: Detect oxygen, toxic gases, flammables.
Correct Answer: B
10. Most common confined space hazard?
A. Radiation
B. Atmospheric hazards
C. Sun exposure
D. Noise only
Rationale: Air contamination is most frequent.
Correct Answer: B
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. What defines a confined space?
A. Large open work area
B. Enclosed space with limited entry/exit and not designed for
occupancy
C. Office room
D. Outdoor trench
Rationale: Confined spaces have restricted access and are not
intended for continuous occupancy.
Correct Answer: B
2. Which is NOT a confined space hazard?
A. Oxygen deficiency
B. Toxic gases
C. Proper lighting
D. Engulfment
Rationale: Proper lighting is not a hazard.
Correct Answer: C
3. What is a permit-required confined space?
A. Any basement
B. Space with recognized serious hazards
C. Any workspace
,D. Open field
Rationale: Permit spaces contain hazards requiring control.
Correct Answer: B
4. First step before entry is?
A. Enter immediately
B. Atmospheric testing
C. Eat lunch
D. Install tools
Rationale: Testing ensures safe atmosphere.
Correct Answer: B
5. Minimum oxygen level safe for entry?
A. 10%
B. 15%
C. 19.5%
D. 25%
Rationale: OSHA safe range begins at 19.5%.
Correct Answer: C
6. Maximum safe oxygen level?
A. 30%
B. 21.5%
C. 19.5%
D. 10%
Rationale: Above 23.5% increases fire risk.
Correct Answer: B
7. Who authorizes confined space entry?
A. Any worker
, B. Entry supervisor
C. Visitor
D. Vendor
Rationale: Supervisor approves permits.
Correct Answer: B
8. What must be completed before entry?
A. Permit system
B. Payroll form
C. Inventory list
D. Time sheet
Rationale: Entry permit is mandatory.
Correct Answer: A
9. Primary purpose of atmospheric testing?
A. Noise control
B. Identify hazards
C. Painting
D. Lighting
Rationale: Detect oxygen, toxic gases, flammables.
Correct Answer: B
10. Most common confined space hazard?
A. Radiation
B. Atmospheric hazards
C. Sun exposure
D. Noise only
Rationale: Air contamination is most frequent.
Correct Answer: B
