NSC Workplace Safety 2 — Questions and Answers
Question 1: Which type of fire extinguisher is appropriate for electrical equipment fires (Class C)?
- Water extinguisher
- CO2 or dry chemical extinguisher (Correct answer)
- Foam extinguisher
- Wet chemical extinguisher
Correct answer: CO2 or dry chemical extinguisher
CO2 and dry chemical extinguishers are safe for Class C (electrical) fires because they are non-conductive.
Question 2: What does the acronym 'OSHA' stand for?
- Occupational Safety and Health Administration (Correct answer)
- Organizational Safety and Hazard Assessment
- Occupational Standards and Hazard Agency
- Office of Safety and Health Awareness
Correct answer: Occupational Safety and Health Administration
OSHA stands for Occupational Safety and Health Administration, the federal agency that enforces workplace safety standards.
Question 3: A worker must enter a confined space with limited openings that may contain hazardous atmospheres. What is required?
- Hot work permit
- Confined space entry permit (Correct answer)
- Lockout/tagout authorization
- Elevated work permit
Correct answer: Confined space entry permit
A confined space entry permit is required before entering permit-required confined spaces to document safety precautions.
Question 4: What is the primary purpose of a Job Hazard Analysis (JHA)?
- To document worker productivity
- To identify and control hazards before work begins (Correct answer)
- To assign blame after an accident
- To schedule equipment maintenance
Correct answer: To identify and control hazards before work begins
A JHA breaks each job into steps to identify potential hazards and determine appropriate controls before work is performed.
Question 5: OSHA requires employers with more than how many employees to maintain the OSHA 300 injury and illness log?
- 5
- 10 (Correct answer)
- 25
- 50
Correct answer: 10
Employers with more than 10 employees in most industries must maintain OSHA 300 records of work-related injuries and illnesses.
Question 6: What is a 'near-miss' in workplace safety terminology?
- A minor injury requiring first aid only
- An incident that could have caused injury but did not (Correct answer)
- A safety violation cited by an inspector
- An equipment malfunction during normal operation
Correct answer: An incident that could have caused injury but did not
A near-miss is an unplanned event with no injury or damage but with the potential to cause harm.
Question 7: Which control is considered the MOST effective in the hierarchy of hazard controls?
- Administrative controls
- Personal protective equipment (PPE)
- Engineering controls
- Elimination of the hazard (Correct answer)
Correct answer: Elimination of the hazard
Elimination removes the hazard entirely and sits at the top of the hierarchy as the most effective control.
NSC Workplace Safety 2
Which type of fire extinguisher is appropriate for electrical equipment fires (Class C)?