NEBOSH Certificate in Process Safety
Management Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download
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1. Which of the following best describes process
safety management (PSM)?
A. Managing employee attendance and schedules
B. Ensuring the safe design, operation, and maintenance
of industrial processes
C. Maintaining financial compliance within a company
D. Overseeing marketing campaigns
B
Rationale: Process safety management focuses on preventing fires,
explosions, and toxic releases by managing hazards associated with
industrial processes. It is not about human resources, finance, or
marketing.
2. The primary purpose of a hazard identification (HAZID)
study is to:
A. Estimate production costs
, B. Identify potential process hazards and assess risks
C. Improve employee morale
D. Schedule maintenance tasks
B
Rationale: HAZID studies systematically review processes to
identify hazards and evaluate the associated risks, forming a
foundation for process safety planning.
3. Which of the following is an example of an inherently safer
design principle?
A. Using large quantities of hazardous chemicals to save cost
B. Substituting a less hazardous chemical for a highly toxic one
C. Adding multiple safety valves to a process
D. Training workers on emergency procedures
B
Rationale: Inherently safer design aims to eliminate or reduce
hazards rather than controlling them with add-on safety systems.
Substitution reduces hazard at the source.
4. A layer of protection analysis (LOPA) is primarily used to:
A. Determine insurance premiums
B. Identify, evaluate, and reduce risk using independent
protection layers
, C. Track employee training records
D. Measure chemical purity
B
Rationale: LOPA assesses the effectiveness of independent protection
layers (IPLs) to reduce process risk to a tolerable level, forming part of
quantitative risk analysis.
5. Which of the following is considered a major hazard?
A. Office printer malfunction
B. Loss of containment of flammable chemicals
C. Low employee attendance
D. Minor slip on a wet floor
B
Rationale: Major hazards are those with the potential to cause
significant harm, including catastrophic events like chemical releases,
fires, or explosions.
6. Process hazard analysis (PHA) should be conducted:
A. Only after an incident occurs
B. Periodically and whenever changes are made to the process
C. Only during initial design
D. Once every 20 years
, B
Rationale: PHAs should be conducted initially and repeated
periodically or when changes occur to ensure hazards are identified
and controlled.
7. What is the primary goal of safety culture in process
industries?
A. Increase profits
B. Reduce incidents by influencing attitudes and
behaviors towards safety
C. Ensure strict attendance
D. Limit customer complaints
B
Rationale: Safety culture reflects organizational values and behaviors
that prioritize safety, reducing the likelihood of incidents.
8. Which of the following is an example of a passive
safety measure?
A. Emergency shutdown system
B. Firewater deluge system
C. Pressure relief vent
D. Explosion-proof building design
D
Rationale: Passive safety measures are built-in design features that do
Management Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download
1. Which of the following best describes process
safety management (PSM)?
A. Managing employee attendance and schedules
B. Ensuring the safe design, operation, and maintenance
of industrial processes
C. Maintaining financial compliance within a company
D. Overseeing marketing campaigns
B
Rationale: Process safety management focuses on preventing fires,
explosions, and toxic releases by managing hazards associated with
industrial processes. It is not about human resources, finance, or
marketing.
2. The primary purpose of a hazard identification (HAZID)
study is to:
A. Estimate production costs
, B. Identify potential process hazards and assess risks
C. Improve employee morale
D. Schedule maintenance tasks
B
Rationale: HAZID studies systematically review processes to
identify hazards and evaluate the associated risks, forming a
foundation for process safety planning.
3. Which of the following is an example of an inherently safer
design principle?
A. Using large quantities of hazardous chemicals to save cost
B. Substituting a less hazardous chemical for a highly toxic one
C. Adding multiple safety valves to a process
D. Training workers on emergency procedures
B
Rationale: Inherently safer design aims to eliminate or reduce
hazards rather than controlling them with add-on safety systems.
Substitution reduces hazard at the source.
4. A layer of protection analysis (LOPA) is primarily used to:
A. Determine insurance premiums
B. Identify, evaluate, and reduce risk using independent
protection layers
, C. Track employee training records
D. Measure chemical purity
B
Rationale: LOPA assesses the effectiveness of independent protection
layers (IPLs) to reduce process risk to a tolerable level, forming part of
quantitative risk analysis.
5. Which of the following is considered a major hazard?
A. Office printer malfunction
B. Loss of containment of flammable chemicals
C. Low employee attendance
D. Minor slip on a wet floor
B
Rationale: Major hazards are those with the potential to cause
significant harm, including catastrophic events like chemical releases,
fires, or explosions.
6. Process hazard analysis (PHA) should be conducted:
A. Only after an incident occurs
B. Periodically and whenever changes are made to the process
C. Only during initial design
D. Once every 20 years
, B
Rationale: PHAs should be conducted initially and repeated
periodically or when changes occur to ensure hazards are identified
and controlled.
7. What is the primary goal of safety culture in process
industries?
A. Increase profits
B. Reduce incidents by influencing attitudes and
behaviors towards safety
C. Ensure strict attendance
D. Limit customer complaints
B
Rationale: Safety culture reflects organizational values and behaviors
that prioritize safety, reducing the likelihood of incidents.
8. Which of the following is an example of a passive
safety measure?
A. Emergency shutdown system
B. Firewater deluge system
C. Pressure relief vent
D. Explosion-proof building design
D
Rationale: Passive safety measures are built-in design features that do
