Low pressure system hoses shall be tested at what PSI?

Prepare for the TFM-04 Fire Extinguisher License – A with comprehensive flashcards and multiple choice questions. Each question offers hints and explanations. Get ready for your exam!

Multiple Choice

Low pressure system hoses shall be tested at what PSI?

Explanation:
The idea being tested is how hose integrity is verified under overpressure. Low‑pressure system hoses are hydrostatically tested at 1.5 times their rated working pressure to ensure they can safely withstand pressures higher than normal service without leaking or bursting. When a hose is rated for 600 psi, multiplying by 1.5 gives 900 psi, so that’s the test pressure used. Testing at only the working pressure wouldn’t reveal weaknesses under higher stress, while going much higher than 1.5 times could risk damage. So the required test pressure for these hoses is 900 psi.

The idea being tested is how hose integrity is verified under overpressure. Low‑pressure system hoses are hydrostatically tested at 1.5 times their rated working pressure to ensure they can safely withstand pressures higher than normal service without leaking or bursting. When a hose is rated for 600 psi, multiplying by 1.5 gives 900 psi, so that’s the test pressure used. Testing at only the working pressure wouldn’t reveal weaknesses under higher stress, while going much higher than 1.5 times could risk damage. So the required test pressure for these hoses is 900 psi.

More practice questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy