NEBOSH HSE PSM EXAM 2025
QUESTIONS AND ANSWERS
Definition of Process Safety Management - ANS A blend of engineering and management
skills focused on preventing catastrophic accidents and near misses, particularly structural
collapse, explosions, fires and toxic releases associated with loss of containment of energy or
dangerous substances such as chemicals and petroleum products.
Sources of Process Safety Management information: - ANS Safety Data Sheets (SDS)
Process design criteria.
Process Flow Diagrams (PFD)
Standard Operating procedures (SOPs) setting safe limits, such as for temperatures, pressures,
flows, compositions and levels as well as evaluation of the effects.
Inspection, audit and investigation reports.
Maintenance records.
Piping and Instrument Diagrams (P&Ids).
Process Control Systems, including software integrity.
Relief system designs.
Fire detection and protection plans.
Management Of Change - MOC - ANS MOC is a management control approach to make sure
that proposed changes are properly assessed and authorized.
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Management Of Change - MOC - Requirements: - ANS Hazard and Risk Analysis.
@COPYRIGHT BRAINBARTER 2025/2026
, Process for all changes to be authorized.
Changes documented.
Consult and inform.
Training.
Workers Consultation - ANS The two-way exchange of information between parties. In this
case, between employer and worker.
Definition of Competence - ANS A combination of practical and thinking skills, experience
and knowledge.
Elements of a Process Safety Management System - ANS Element 1: Strong Leadership.
Element 2: Hazard Analysis.
Element 3: Management Of Change.
Element 4: Operation within design intent.
Element 5: Competence management. (Training).
Element 6: Control of Contractors.
Element 7: Asset Integrity.
Element 8: Emergency Response.
Element 9: Process Safety Incident Investigations.
Element 10: Performance Monitoting and Auditing.
Leading Indicators - ANS Proactive measurements of conditions that monitor process safety
before something goes wrong and to see if things are operating as intended.
Lagging Indicators - ANS Reactive measures that took at failures, such as the number of
injuries, the number of near misses and the number of spills that are reported, or excursions
2
where plant is operated outside the intended operational envelope.
Page
@COPYRIGHT BRAINBARTER 2025/2026
QUESTIONS AND ANSWERS
Definition of Process Safety Management - ANS A blend of engineering and management
skills focused on preventing catastrophic accidents and near misses, particularly structural
collapse, explosions, fires and toxic releases associated with loss of containment of energy or
dangerous substances such as chemicals and petroleum products.
Sources of Process Safety Management information: - ANS Safety Data Sheets (SDS)
Process design criteria.
Process Flow Diagrams (PFD)
Standard Operating procedures (SOPs) setting safe limits, such as for temperatures, pressures,
flows, compositions and levels as well as evaluation of the effects.
Inspection, audit and investigation reports.
Maintenance records.
Piping and Instrument Diagrams (P&Ids).
Process Control Systems, including software integrity.
Relief system designs.
Fire detection and protection plans.
Management Of Change - MOC - ANS MOC is a management control approach to make sure
that proposed changes are properly assessed and authorized.
1
Page
Management Of Change - MOC - Requirements: - ANS Hazard and Risk Analysis.
@COPYRIGHT BRAINBARTER 2025/2026
, Process for all changes to be authorized.
Changes documented.
Consult and inform.
Training.
Workers Consultation - ANS The two-way exchange of information between parties. In this
case, between employer and worker.
Definition of Competence - ANS A combination of practical and thinking skills, experience
and knowledge.
Elements of a Process Safety Management System - ANS Element 1: Strong Leadership.
Element 2: Hazard Analysis.
Element 3: Management Of Change.
Element 4: Operation within design intent.
Element 5: Competence management. (Training).
Element 6: Control of Contractors.
Element 7: Asset Integrity.
Element 8: Emergency Response.
Element 9: Process Safety Incident Investigations.
Element 10: Performance Monitoting and Auditing.
Leading Indicators - ANS Proactive measurements of conditions that monitor process safety
before something goes wrong and to see if things are operating as intended.
Lagging Indicators - ANS Reactive measures that took at failures, such as the number of
injuries, the number of near misses and the number of spills that are reported, or excursions
2
where plant is operated outside the intended operational envelope.
Page
@COPYRIGHT BRAINBARTER 2025/2026
