USCG Exam PracticeAir conditioning, ventilation, and compressed air
A compartment above the weather deck contains gas-consuming appliances and is fitted with powered ventilation. Under 46 CFR §58.16-20, which requirement applies to the motor driving that powered ventilation?
- A. The motor must be explosion-proof and located inside the compartment.
- ✓ The motor must be located outside the compartment.Correct
- C. The motor must be interlocked to shut down whenever the appliances are secured.
- D. The motor must be capable of achieving one air change every 6 minutes.
Why B is correct
46 CFR §58.16-20(a) states that powered ventilation may be used for above-deck compartments provided the motor is outside the compartment. The one-air-change-per-6-minutes requirement applies only to below-deck compartments under §58.16-20(b), and neither paragraph specifies an interlock or an explosion-proof rating for the motor.
Cited:46 CFR §58.16-20