What is the tolerable leak rate for a safety shutoff device on oil valves?

What is the tolerable leak rate for a safety shutoff device on oil valves?

• A. 80 drops in 1 minute
• B. 80 drops in 5 minutes
• C. 8 drops in 1 minute
• D. 800 drops in 1 minute

Answer: (A)

Leaking rate testing uses a simple, repeatable measure: how many drops occur from the valve in a set time. For a safety shutoff device on oil valves, the accepted limit is 80 drops per minute. This per-minute cap provides a clear pass/fail criterion—if the device releases up to 80 drops in one minute, the seal is considered adequate for safe operation; more than that indicates an excessive leak and a safety risk. Measuring over a longer interval, like five minutes, would blur the standard’s defined threshold and isn’t how the tolerance is specified, since the test is meant to reflect a per-minute rate. An extremely high rate (800 drops per minute) would clearly fail, while a much lower rate (8 drops per minute) is stricter than the published tolerance and not the basis for acceptance. So, 80 drops in 1 minute is the recognized tolerable leak rate.

Leaking rate testing uses a simple, repeatable measure: how many drops occur from the valve in a set time. For a safety shutoff device on oil valves, the accepted limit is 80 drops per minute. This per-minute cap provides a clear pass/fail criterion—if the device releases up to 80 drops in one minute, the seal is considered adequate for safe operation; more than that indicates an excessive leak and a safety risk. Measuring over a longer interval, like five minutes, would blur the standard’s defined threshold and isn’t how the tolerance is specified, since the test is meant to reflect a per-minute rate. An extremely high rate (800 drops per minute) would clearly fail, while a much lower rate (8 drops per minute) is stricter than the published tolerance and not the basis for acceptance. So, 80 drops in 1 minute is the recognized tolerable leak rate.