DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

system performance. Provide bollards around meters and regulators as shown to protect themfrom vehicular damage.3 .5 LEAK TESTINGA. Underground Piping:1. Test with compressed air (oil free) or nitrogen gas only.2. Pipe shall be anchored by partial backfilling to prevent movement during leak testing. Alljoints and fittings shall remain exposed to facilitate inspection for joint leakage.3. Piping system shall stand a pressure of 50 psig for a period of not less than 1 hour withoutshowing any drop in pressure. Leak test shall not exceed 3 hours. Pressure shall bemeasured with a pressure gauge or an equivalent device, calibrated to be read in incrementsnot greater than 1/2 pound per square inch. All sources of gas pressure shall be isolatedbefore the pressure tests are made.4. Before turning on sources of gas pressure, close all openings from which gas can escape.5. Correct leaks by remaking joints with new materials; makeshift remedies will not bepermitted.B. Aboveground Piping:1. Test with compressed air (oil free) or nitrogen gas only.2. Before gas burning appliances are connected, piping systems shall stand a pressure of 50psig for a period of not less than 1 hour without showing any drop in pressure. Pressureshall be measured with a pressure gauge or an equivalent device, calibrated to be read inincrements not greater than 1/2 pound per square inch. All sources of gas pressure shall beisolated before the pressure tests are made. All devices which may be damaged by the testpressure shall be isolated from the piping system being tested.3. Before turning on gas, close all openings from which gas can escape. Immediately afterturning on the gas, check piping system again by the following method.a. Immediately prior to the test, determine that meters are in operating condition andhave not been bypassed.b. Carefully watch test dial of meter to determine whether gas is passing through meter.To assist in observing any movement of the test hand, wet a small piece of paperand paste its edge directly over the centerline of the hand as soon as the gas is turnedon. Allow 5 minutes for a 1/2-foot dial and proportionately longer for a larger dial inchecking for gas flow. This observation should be made with the test hand on theupstroke.c. If test hand does not move, purge piping, turn gas on and light a small gas burner,and observe test dial again. If the dial hand moves, the meter is operating properly.If dial hand does not move or register flow of gas through the meter to the smallburner, the meter is defective. The gas supply shall be shut off and the meter shall bereplaced.15360-7PROPANE GAS DISTRIBUTION SYSTEM