30 real Process Safety Management questions from the Plant Operations bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
1. What is PSM elements?
Junior
A.formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation
B.large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
C.barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right
D.OSHA 29 CFR 1910.119's fourteen elements including process safety information, PHA, operating procedures, training, MOC, PSSR, mechanical integrity and incident investigation
2. Which term means: "OSHA 29 CFR 1910.119's fourteen elements including process safety information, PHA, operating procedures, training, MOC, PSSR, mechanical integrity and incident investigation"?
A.PSM elements — Oil Industry Safety Directorate standard for fire protection facilities in petroleum refineries and oil and gas processing plants
B.PSM elements — temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
C.PSM elements — OSHA 29 CFR 1910.119's fourteen elements including process safety information, PHA, operating procedures, training, MOC, PSSR, mechanical integrity and incident investigation
D.PSM elements — leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
5. Which term means: "formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation"?
A.Management of change — pre-start-up safety review confirming construction matches design, procedures and training exist and PHA actions are closed before hazardous material is introduced
B.Management of change — structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
C.Management of change — temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
D.Management of change — formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation
A.pre-start-up safety review confirming construction matches design, procedures and training exist and PHA actions are closed before hazardous material is introduced
B.formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation
C.structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
D.Oil Industry Safety Directorate standard for fire protection facilities in petroleum refineries and oil and gas processing plants
8. Which term means: "pre-start-up safety review confirming construction matches design, procedures and training exist and PHA actions are closed before hazardous material is introduced"?
A.PSSR — formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation
B.PSSR — pre-start-up safety review confirming construction matches design, procedures and training exist and PHA actions are closed before hazardous material is introduced
C.PSSR — Oil Industry Safety Directorate standard for fire protection facilities in petroleum refineries and oil and gas processing plants
D.PSSR — standard fixing inter-unit and inter-equipment layout distances in oil and gas installations, including tank dyke and unit spacing
A.OSHA 29 CFR 1910.119's fourteen elements including process safety information, PHA, operating procedures, training, MOC, PSSR, mechanical integrity and incident investigation
B.structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
C.leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
D.temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
11. Which term means: "structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure"?
A.Root cause analysis — structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
B.Root cause analysis — formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation
C.Root cause analysis — large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
D.Root cause analysis — pre-start-up safety review confirming construction matches design, procedures and training exist and PHA actions are closed before hazardous material is introduced
A.OSHA 29 CFR 1910.119's fourteen elements including process safety information, PHA, operating procedures, training, MOC, PSSR, mechanical integrity and incident investigation
B.large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
C.temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
D.barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right
14. Which term means: "barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right"?
A.Bow-tie diagram — leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
B.Bow-tie diagram — standard fixing inter-unit and inter-equipment layout distances in oil and gas installations, including tank dyke and unit spacing
C.Bow-tie diagram — barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right
D.Bow-tie diagram — large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
A.Oil Industry Safety Directorate standard for fire protection facilities in petroleum refineries and oil and gas processing plants
B.temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
C.large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
D.leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
17. Which term means: "Oil Industry Safety Directorate standard for fire protection facilities in petroleum refineries and oil and gas processing plants"?
A.OISD-116 — Oil Industry Safety Directorate standard for fire protection facilities in petroleum refineries and oil and gas processing plants
B.OISD-116 — pre-start-up safety review confirming construction matches design, procedures and training exist and PHA actions are closed before hazardous material is introduced
C.OISD-116 — temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
D.OISD-116 — leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
A.leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
B.barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right
C.temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
D.standard fixing inter-unit and inter-equipment layout distances in oil and gas installations, including tank dyke and unit spacing
20. Which term means: "standard fixing inter-unit and inter-equipment layout distances in oil and gas installations, including tank dyke and unit spacing"?
A.OISD-118 — standard fixing inter-unit and inter-equipment layout distances in oil and gas installations, including tank dyke and unit spacing
B.OISD-118 — OSHA 29 CFR 1910.119's fourteen elements including process safety information, PHA, operating procedures, training, MOC, PSSR, mechanical integrity and incident investigation
C.OISD-118 — barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right
D.OISD-118 — structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
A.standard fixing inter-unit and inter-equipment layout distances in oil and gas installations, including tank dyke and unit spacing
B.large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
C.temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
D.leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
23. Which term means: "leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754"?
A.Process safety KPIs — standard fixing inter-unit and inter-equipment layout distances in oil and gas installations, including tank dyke and unit spacing
B.Process safety KPIs — barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right
C.Process safety KPIs — leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
D.Process safety KPIs — temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
A.formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation
B.large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
C.pre-start-up safety review confirming construction matches design, procedures and training exist and PHA actions are closed before hazardous material is introduced
D.structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
26. Which term means: "large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide"?
A.Bhopal 1984 lessons — leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
B.Bhopal 1984 lessons — large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
C.Bhopal 1984 lessons — barrier model with the top event in the centre, threats and preventive barriers on the left, consequences and mitigation barriers on the right
D.Bhopal 1984 lessons — temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
A.formal review and approval of any change to chemicals, equipment, procedures or organisation that is not replacement in kind, before implementation
B.structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
C.leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
D.temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
29. Which term means: "temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change"?
A.Flixborough 1974 lessons — large MIC inventory, disabled refrigeration, scrubber and flare, and weak MOC drove inventory reduction and inherently safer design worldwide
B.Flixborough 1974 lessons — structured investigation by 5-Whys, fishbone, TapRooT or fault tree that goes past the immediate cause to the management-system failure
C.Flixborough 1974 lessons — temporary bypass pipe between cyclohexane reactors installed without engineering review caused a vapour cloud explosion, the origin of formal management of change
D.Flixborough 1974 lessons — leading indicators such as overdue inspections, MOC backlog and safeguard bypasses, plus lagging Tier 1 and Tier 2 loss-of-containment events under API 754
Answers, AI explanations, and a free readiness check
Sign up free to check your answers with explanations, ask the AI tutor anything on any question, and take the free 2-minute readiness check for a scored result. The full AI mock interview, scored like a real panel, unlocks with Pro.