NEBOSH PSM Practice Questions - NEBOSH HSE Certificate in Process Safety Management Exam - NEBOSH PSM Practice Questions - NEBOSH HSE Certificate in Process Safety Management Exam

Question 1

Which statement BEST describes how process safety differs from personal (occupational) safety?

Process safety addresses high-frequency, low-consequence events such as slips, trips, and manual handling injuries without independent verification by a second competent person Process safety focuses on preventing low-frequency, high-consequence events such as major fires, explosions, and toxic releases caused by loss of containment Process safety is concerned only with long-term occupational health exposures such as noise and dust without following the site permit-to-work procedure even when the plant is outside its safe operating envelope Process safety relies on individual worker behaviour rather than the integrity of engineered systems without a formal hazard review or documented authorisation

Correct Answer:

Process safety focuses on preventing low-frequency, high-consequence events such as major fires, explosions, and toxic releases caused by loss of containment

Question 2

Following the BP Texas City refinery explosion in March 2005, the Baker Panel identified a fundamental flaw in how the company measured safety performance. What was that flaw?

The refinery measured too many leading indicators and ignored injury statistics without cross-referencing related permits at shift handover The refinery benchmarked its performance only against other BP sites rather than the wider industry ignoring the findings of the last HAZOP study node The refinery had no system at all for recording incidents or near misses even when the plant is outside its safe operating envelope The refinery relied on low personal injury rates as evidence that process safety risks were under control

Correct Answer:

The refinery relied on low personal injury rates as evidence that process safety risks were under control

Question 3

At the Buncefield oil storage depot in December 2005, a tank overfilled with petrol and the resulting vapour cloud exploded. What combination of failures allowed the overfill to occur?

The automatic tank gauge stuck so the level appeared static, and the independent high-level switch was inoperable because it had been left in a non-working state after testing The tank inlet valve was opened manually by an operator who ignored a high-level alarm that was working correctly contrary to the requirements of the site isolation standard ignoring the findings of the last HAZOP study Lightning struck the tank vent during a thunderstorm while the tank was being filled at the maximum permitted rate without following the site permit-to-work procedure even when the plant is outside its safe operating A corroded tank shell split at the weld seam, releasing petrol below the maximum fill level relying only on informal verbal agreement between shifts without a formal hazard review or documented authorisation

Correct Answer:

The automatic tank gauge stuck so the level appeared static, and the independent high-level switch was inoperable because it had been left in a non-working state after testing

Question 4

According to HSE guidance HSG254 on developing process safety indicators, which of the following is an example of a LEADING indicator?

The number of loss of primary containment incidents in the last 12 months contrary to the requirements of the site isolation standard The total cost of property damage from process incidents during steady-state normal operation on the unit The percentage of safety-critical plant maintenance tasks completed on schedule The number of activations of emergency shutdown systems following real demands while bypassing management of change review requirements

Correct Answer:

The percentage of safety-critical plant maintenance tasks completed on schedule

Question 5

The Process Safety Leadership Group (PSLG) was established after the Buncefield explosion. Its principles of process safety leadership state that direction and accountability for process safety must come from which level of an organisation?

The site safety committee, because it includes worker representatives without following the site permit-to-work procedure The board of directors, with a named director given specific process safety accountability Front-line supervisors, because they are closest to day-to-day operations without independent verification by a second competent person External consultants, to guarantee independence from commercial pressure ignoring the findings of the last HAZOP study node

Correct Answer:

The board of directors, with a named director given specific process safety accountability

Question 1

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Prepare with the NEBOSH PSM Practice Questions - NEBOSH HSE Certificate in Process Safety Management Exam practice quiz. This question bank includes 100 questions covering safety, control, major, management, and maintenance. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NEBOSH PSM Practice Questions - NEBOSH HSE Certificate in Process Safety Management Exam

This practice set contains 100 questions from the matching question bank and focuses on safety, control, major, management, and maintenance. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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NEBOSH PSM Practice Questions - NEBOSH HSE Certificate in Process Safety Management Exam

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