Pipefitter Safety Considerations 5

Question 1

When hydrostatic testing a piping system, why must all air be vented before applying full test pressure?

Accepted Answer

Trapped air can compress and store energy, creating an explosion hazard if the system fails

Answer

Compressed air stores significant energy that releases explosively if the system ruptures, while water (incompressible) simply leaks.

Question 2

What does the acronym LOTO stand for in a pipefitting safety context?

Accepted Answer

Lockout/Tagout

Answer

Lockout/Tagout (LOTO) is the procedure for controlling hazardous energy by physically locking and labeling energy isolation devices.

Question 3

A pipefitter is preparing to break open a flange on a process line that carried caustic soda. What PPE is most critical beyond standard items?

Accepted Answer

Face shield, chemical splash goggles, and chemical-resistant gloves

Answer

Caustic soda (sodium hydroxide) causes severe chemical burns to eyes and skin, requiring full face and hand chemical protection.

Question 4

Which OSHA standard primarily governs process safety management (PSM) of highly hazardous chemicals in facilities where pipefitters work?

Accepted Answer

29 CFR 1910.119

Answer

29 CFR 1910.119 is OSHA's Process Safety Management standard covering facilities with threshold quantities of highly hazardous chemicals.

Question 5

When scaffolding is tagged with a RED tag, what does this mean to a pipefitter?

Accepted Answer

The scaffold must not be used — it is unsafe or incomplete

Answer

A red scaffold tag indicates the scaffold is unsafe or incomplete and absolutely must not be used until deficiencies are corrected.

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