During leak test, there should be no continuous hissing sounds.

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Prepare for the City of Miami Fire Department Driver-Engineer Exam. Review multiple choice questions with hints and explanations. Succeed on your test!

Multiple Choice

During leak test, there should be no continuous hissing sounds.

Explanation:
A leak test is meant to confirm the pump and its piping are airtight at the test pressure. A continuous hiss means air is escaping somewhere in the system, signaling a leak or an improperly seated component. Because the goal is to prove there are no leaks, there should be no sustained hissing once the system is pressurized. If you hear a continuous hiss, you would locate and fix the leak and re-test until the sound stops.

A leak test is meant to confirm the pump and its piping are airtight at the test pressure. A continuous hiss means air is escaping somewhere in the system, signaling a leak or an improperly seated component. Because the goal is to prove there are no leaks, there should be no sustained hissing once the system is pressurized. If you hear a continuous hiss, you would locate and fix the leak and re-test until the sound stops.

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