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There was no associated test called out in the standard The system shall be left with pressurized water long enough for leaks (if any) to be determined This testing intends to hopefully identify leaks before they become a major problem.
Here is a breakdown of how the inspector conducts these tests The time required for water to pass through the inspectors test shall be measured and recorded Partial flow trip test throttle the sprinkler control valve to within 2.5 turns of being fully closed
Open the inspectors test connection to release air pressure from the system
Record the time and air pressure at which the system trips Compare the results with the previous tests and take appropriate corrective action if the. Learn about dry sprinkler tests with the longest timelines, including testing air leakage, gauges, the inside of water tanks, and dry sprinkler heads. If the low air alarm sounds before the 4 hours is up then the system fails the low air test
A failure of either the 2 hour or 4 hour test will result in the need to address gas leaks which is a separate inspection and repair procedure. Model air pressure at start of test At 40 psi without pressure leakage exceeding 3 psi System pressure at 40 psi, leakage exceeded 3 psi, system has low air supervision
It helps to identify any potential issues with the dry pipe valve or the water supply, which could prevent the sprinkler system from operating correctly in the event of a fire.
Learn about the six specific air leak testing methods and their benefits for different leak test applications. Every three years and whenever the system is altered, the dry pipe valve or preaction valve shall be trip tested with the valve fully open and the quick opening device, if provided, in service The system shall be left with pressurized water long enough for leaks (if any) to be determined.
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