Skip to main content
CaptainsGround
Every answer cited & verifiedAll 4 USCG exam modulesReviewed by a former NMC exam writer
USCG Exam PracticeWatch duties, terminology, and instrumentation

Before opening a pressurized system, valve, or casing in the engine room, what conditions must the watchstander verify are met?

  1. A. The watch engineer has been notified and the bell book has been updated
  2. ✓ The system is isolated, depressurized, cooled, and, where required, tagged outCorrect
  3. C. The system is isolated and the engineering log entry has been completed
  4. D. The bridge has been informed and the throttle has been set to stop

Why B is correct

NAVEDTRA 14104 §1-2 explicitly states that before opening any pressurized system, valve, or casing, the watchstander verifies it is isolated, depressurized, cooled, and, where required, tagged out. Omitting any one of these steps creates a serious injury hazard.

Cited:NAVEDTRA 14104 §1-2

More Watch duties, terminology, and instrumentation questions

Start drilling in 30 seconds. Free.

No signup, no credit card — answer 5 real, cited exam questions right now.

Try 5 free questionsSee how it works
Before opening a pressurized system, valve, or casing in the engine… — USCG Exam Practice · CaptainsGround