Pipefitter Core Responsibilities 4

Question 1

When a pipefitter discovers an unmarked underground utility line during excavation, what is the correct immediate action?

Accepted Answer

Stop work and notify the supervisor and utility owner

Answer

Work must stop immediately and the supervisor and utility owner must be notified to prevent damage or injury.

Question 2

Which document governs the allowable pressure rating for a piping system in a given facility?

Accepted Answer

The piping specification or pipe class document

Answer

The piping specification or pipe class document defines materials, pressure ratings, and fittings allowed for each service.

Question 3

A pipefitter is asked to install a branch connection on a high-pressure steam header. Which method is MOST appropriate for a full-strength connection?

Accepted Answer

Threadolet fitting welded to the header

Answer

A threadolet (or weldolet) provides a full-penetration weld and is rated for high-pressure branch connections.

Question 4

What is the primary purpose of a hydrostatic pressure test on a newly installed piping system?

Accepted Answer

To verify the system holds pressure without leaks or failures

Answer

A hydrostatic test confirms the integrity of all welds, fittings, and joints by pressurizing the system above operating pressure.

Question 5

Which OSHA standard primarily governs permit-required confined space entry for pipefitters?

Accepted Answer

29 CFR 1910.146

Answer

29 CFR 1910.146 covers permit-required confined spaces, including atmospheric testing and entry procedures.

Certified Pipefitter Practice Test

Certified Pipefitter Practice Test

Pipefitter Core Responsibilities 4