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

Any minor personnel injury on the plant floor

Answer

A scheduled maintenance outage

Answer

A near-miss that caused no property damage

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

Monthly Safety Drill Summary — drill records

Answer

Maintenance Shutdown Documentation System — outage plans

Answer

Manufacturing Standard Design Specification — engineering specs

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

Personal hygiene at end of shift

Answer

Emergency drinking water supply

Answer

Equipment rinsing after maintenance

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

Using only the most reliable single safety system

Answer

Keeping safety systems hidden from operators to avoid complacency

Answer

Relying on administrative controls as the last line of defense

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

Ignore it if the process pressure has returned to normal

Answer

Hammer the valve to force it closed

Answer

Increase feed rate to consume excess pressure

Question 6

In the NFPA 704 diamond (hazard diamond), what does the RED section indicate?

Accepted Answer

Flammability hazard

Answer

Health hazard

Answer

Reactivity hazard

Answer

Special hazard