USCG Exam PracticeWatch duties, terminology, and instrumentation
According to watchstanding safety requirements, what must a watchstander verify before opening any pressurized system, valve, or casing?
- A. That the engineering log has been updated with the intended evolution
- B. That the engineer officer of the watch has been notified by sound-powered phone
- ✓ That the system is isolated, depressurized, cooled, and where required, tagged outCorrect
- D. That all bilges are clear of oil and water before proceeding
Why C 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. The other items are also good practice but are not the specific prerequisite for opening pressurized systems.
Cited:NAVEDTRA 14104 §1-2