Plant Operator Selection System Test Plant Safety Procedures and Regulations

Question 1

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

Accepted Answer

Notify the control room and monitor the pressure reading

Answer

Ignore it if pressure returns to normal quickly

Answer

Immediately shut down the entire unit

Answer

Increase the feed rate to compensate

Question 2

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

Accepted Answer

Servicing equipment that could unexpectedly energize

Answer

Performing routine instrument readings

Answer

Checking oil levels on a stopped pump

Answer

Writing entries in the operations log

Question 3

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

Accepted Answer

A worker could not escape without severe health effects

Answer

Workers must wear standard dust masks

Answer

Exposure causes mild irritation after 8 hours

Answer

The gas becomes flammable

Question 4

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

Accepted Answer

Class C

Answer

Class A

Answer

Class B

Answer

Class D

Question 5

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

Accepted Answer

Exposure controls and personal protective equipment

Answer

Physical and chemical properties

Answer

First aid measures

Answer

Storage and handling

Question 6

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

Accepted Answer

Move upwind and alert others immediately

Answer

Search for the source of the leak

Answer

Wait to see if the odor intensifies

Answer

Remove your hard hat to improve detection