PO Safety & Hazard Management 3

Question 1

Which of the following best defines a Process Safety Incident (PSI)?

Accepted Answer

An unplanned or uncontrolled release of a hazardous material or energy

Answer

A PSI is specifically an unplanned or uncontrolled release of a hazardous substance or energy that has the potential to cause major consequences.

Question 2

What does the acronym MSDS/SDS stand for, and what does it provide?

Accepted Answer

Material Safety Data Sheet — chemical hazard and safe handling information

Answer

An SDS (Safety Data Sheet) provides comprehensive information on a chemical's hazards, safe handling, storage, and emergency response.

Question 3

What is the purpose of a safety shower and eyewash station in a process area?

Accepted Answer

Immediate decontamination after chemical exposure to skin or eyes

Answer

Safety showers and eyewash stations provide immediate emergency flushing to remove hazardous chemicals from a worker's body or eyes.

Question 4

Which best describes the concept of 'defense in depth' in process safety?

Accepted Answer

Layering multiple independent protection systems so no single failure causes a catastrophe

Answer

Defense in depth uses multiple independent layers of protection so that a failure in one layer does not lead directly to a major accident.

Question 5

A safety relief valve lifts and fails to reseat. The correct operator response is to:

Accepted Answer

Notify the control room, isolate if possible, and follow established procedures

Answer

A relief valve that fails to reseat must be reported immediately and managed per established abnormal operating procedures to prevent uncontrolled release.

PO - Process Operator Certification Practice Test

PO - Process Operator Certification Practice Test

PO Safety & Hazard Management 3