Plant Safety Procedures and Regulations Flashcards

When a pressure relief valve activates unexpectedly during normal operations, the operator's FIRST action should be to:

Answer: Notify the control room and monitor the pressure reading

Unexpected relief valve activation indicates a process upset and must be reported immediately so the control room can assess and respond.

A Lockout/Tagout (LOTO) procedure is required before:

Answer: Servicing equipment that could unexpectedly energize

LOTO is mandatory before any servicing or maintenance work where unexpected energization could injure workers.

The IDLH (Immediately Dangerous to Life or Health) concentration for a gas is the level at which:

Answer: A worker could not escape without severe health effects

IDLH defines the concentration from which a worker could not escape within 30 minutes without irreversible harm or death.

Which class of fire extinguisher is correct for an electrical equipment fire?

Answer: Class C

Class C extinguishers use non-conductive agents and are designed specifically for energized electrical equipment fires.

A Safety Data Sheet (SDS) Section 8 provides information on:

Answer: Exposure controls and personal protective equipment

SDS Section 8 covers occupational exposure limits, engineering controls, and required PPE for safe handling.

If you smell hydrogen sulfide (H₂S) in a plant area, you should FIRST:

Answer: Move upwind and alert others immediately

H₂S is immediately toxic; moving upwind and alerting others prevents exposure while initiating an emergency response.