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USCG Exam PracticeWatch duties, terminology, and instrumentation

A watchstander needs to open a valve on a steam line to restore flow to an auxiliary. Which sequence correctly reflects the safety requirements before opening the valve?

  1. ✓ Verify the line is isolated, depressurized, cooled, and tagged out as required, then open the valveCorrect
  2. B. Don hearing protection and gloves, then crack the valve slowly to bleed off pressure
  3. C. Notify the watch engineer, then open the valve while another watchstander monitors the pressure gauge
  4. D. Confirm the system is in the plant lineup and open the valve at normal operating pressure

Why A is correct

NAVEDTRA 14104 §1-2 requires that before opening any pressurized system, valve, or casing, the watchstander verifies it is isolated, depressurized, cooled, and, where required, tagged out. Opening a steam valve at operating pressure without isolation and depressurization is a serious burn and injury hazard.

Cited:NAVEDTRA 14104 §1-2

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A watchstander needs to open a valve on a steam line to restore flo… — USCG Exam Practice · CaptainsGround