Question 1018 Deck General

70% to pass

The liquid-filled PV breaker has acted to relieve a vacuum in a tank. What action must be taken in regards to the PV-breaker before continuing operations?

A Refill the breaker with liquid.

B Install a new rupture disc.

C Check to make certain that it has reset itself.

D Manually reset the vacuum side of the breaker.

AI Explanation

The correct answer is A) Refill the breaker with liquid. The liquid-filled PV (pressure-vacuum) breaker is designed to relieve a vacuum in a tank by allowing air to enter the tank. If the liquid in the breaker has acted to relieve the vacuum, this means the liquid level has been depleted. Before continuing operations, the breaker must be refilled with the appropriate liquid to restore its functionality and ensure it can properly respond to future vacuum conditions in the tank. The other options are incorrect because they do not address the need to refill the depleted liquid in the breaker.

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app

Download on App Store Get it on Google Play Download for Mac