Person Examination Practice Questions

Illinois Confined Space Competent Person Examination Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary responsibility of a confined space competent

person?

• Perform all entry tasks personally
• Identify hazards and ensure safety measures
• Operate confined space equipment without training
• Only monitor atmospheric conditions

The competent person is responsible for recognizing hazards, implementing safety measures, and ensuring proper procedures are followed. 1 / 4

• Which of the following is considered a confined space?
• An open parking lot
• A tank with limited entry and exit points
• A wide open field
• A sidewalk

A confined space has limited entry and exit and is not designed for continuous occupancy.

• Which type of hazard is most commonly found in confined spaces?
• Noise
• Heat
• Oxygen deficiency
• Dust

Oxygen-deficient atmospheres are a critical hazard in confined spaces and can be life-threatening.

4. Before entry, a confined space must be tested for:

• Structural integrity only
• Electrical hazards only
• Atmospheric hazards
• Noise levels only

Testing for hazardous atmospheres such as oxygen levels, flammable gases, and toxic gases is required before entry.

• Who must perform atmospheric testing in a confined space?
• Any worker present 2 / 4

• The entry supervisor only
• A trained and authorized person
• Any contractor on site

Only trained personnel using proper equipment can safely perform atmospheric testing.

• What is a permit-required confined space (PRCS)?
• Any room with a door
• A space with potential hazards requiring a permit for entry
• An open-air workspace
• A space with no hazards

PRCS have known hazards such as toxic gases, engulfment, or oxygen deficiency, and require a permit to ensure safety.

• Which of the following is NOT a common confined space hazard?
• Toxic gases
• Oxygen deficiency
• Flammable vapors
• Normal ventilation

Normal ventilation is a control method, not a hazard.

• What is the required oxygen level for safe entry into a confined space?
• Less than 19.5%
• More than 23.5%
• Between 19.5% and 23.5%
• Exactly 21% 3 / 4

OSHA requires oxygen levels in this range to ensure a breathable atmosphere.

• Before entering a confined space, which of the following should be

established?

• Entry permit and rescue procedures
• Only a checklist
• Entry permit, testing, ventilation, and rescue plan
• Communication plan only

A complete entry program includes all of these steps to protect workers.

• Which device is used to monitor oxygen, flammable gases, and

toxic gases in confined spaces?

• Multimeter
• Fire extinguisher
• Gas detector or multi-gas monitor
• Pressure gauge

Gas detectors are designed to detect and alert workers to hazardous atmospheres.

• What is the primary purpose of ventilation in a confined space?
• Reduce noise
• Cool the worker
• Remove or control hazardous atmospheres
• Improve visibility
• / 4