Pipefitter Safety Procedures and Regulations 5

Question 1

Which OSHA standard specifically governs the control of hazardous energy (lockout/tagout) for pipefitters servicing equipment?

Accepted Answer

29 CFR 1910.147

Answer

29 CFR 1910.147, the Control of Hazardous Energy standard, establishes lockout/tagout procedures for servicing and maintaining equipment.

Question 2

A pipefitter notices a co-worker's harness has a frayed lanyard after a previous fall arrest. The correct action is to:

Accepted Answer

Remove it from service immediately and tag it as defective

Answer

Any fall protection equipment that has arrested a fall or shows visible damage must be immediately removed from service per OSHA and manufacturer requirements.

Question 3

What is the purpose of a 'buddy system' when a pipefitter performs work in a permit-required confined space?

Accepted Answer

To ensure an attendant can monitor the entrant and initiate rescue if needed

Answer

An attendant stationed outside the confined space monitors the entrant's condition and can summon rescue without entering the space themselves.

Question 4

Under ASME B31.3, after completing a piping system repair, the line must undergo a pressure test at what minimum percentage above the design pressure?

Accepted Answer

125%

Answer

ASME B31.3 requires a hydrostatic leak test at 1.5 times (150%) the design pressure, but the standard hydrostatic test is 1.5×; however, the minimum pressure test factor commonly referenced for process piping is 1.5× design pressure.

Question 5

When using a chain hoist to lift a pipe section near electrical lines, the minimum safe approach distance for unqualified workers near 50 kV lines is:

Accepted Answer

10 feet

Answer

OSHA 29 CFR 1926.1408 requires unqualified workers to maintain at least 10 feet of clearance from power lines up to 50 kV.

Certified Pipefitter Practice Test

Certified Pipefitter Practice Test

Pipefitter Safety Procedures and Regulations 5