CPA Equipment Maintenance & Operations 4

Question 1

What is the MAIN reason for using a strainer upstream of a control valve or pump?

Accepted Answer

To remove solid particles that could damage the equipment

Answer

Strainers catch debris and solid particles before they can damage trim, seats, impellers, or seals in downstream equipment.

Question 2

In a petroleum facility, a 'dead leg' in a piping system refers to:

Accepted Answer

A section of pipe with no flow that can accumulate stagnant fluid or cause corrosion

Answer

Dead legs are stagnant sections of piping where fluid doesn't flow, making them prone to corrosion, biological growth, and contamination.

Question 3

Which maintenance strategy involves continuously monitoring equipment condition using vibration, temperature, and oil analysis to predict failures?

Accepted Answer

Predictive maintenance

Answer

Predictive maintenance uses real-time condition monitoring data to anticipate equipment failures before they occur, optimizing maintenance timing.

Question 4

When storing a pump that has been taken out of service for an extended period, what is a key preservation step?

Accepted Answer

Rotate the shaft periodically and apply preservation oil to internal surfaces

Answer

Periodic shaft rotation prevents bearing brinelling and flat-spotting, while preservation oil protects internal surfaces from corrosion during storage.

Question 5

A flow meter reads significantly lower than expected even though the pump discharge pressure is normal. The MOST likely cause is:

Accepted Answer

Partially closed isolation valve upstream of the meter or meter fouling

Answer

A partially closed valve or fouled meter element reduces measured flow without affecting pump discharge pressure, pointing away from the pump as the cause.

(CPA) Certified Petroleum Apprentice Practice Test

(CPA) Certified Petroleum Apprentice Practice Test

CPA Equipment Maintenance & Operations 4