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PEIMP120012 <br /> pipe, it is not considered to be liqui& tight . This and secondary containment. The vacuum level is <br /> visually indicates a test failure, monitored for a i � ntlnutc period . <br /> 6.3.5 Test Procedure . 6 .4.3 Test Equipment . 'fest equipment shall <br /> 1. Slowly apply i a vacuum of 30 inches water include . <br /> column to the spill bucket and close the valve . vacuum test apparatus (The test apparatus may <br /> It' a 30- inch water column vacuum cannot be be available from the spill- bucket manufacturer, <br /> attained, the spill bucket fails the test, See It includes an air pressure regulator, a vacuum <br /> Appendix B for pressure and vacuum convey- source, a vacuum gauge with a minimum 0-30 <br /> signs, inch water column range, a test fitting and a <br /> 2 . Start the time-measurement device and record Vontrol valve . The control valve is used to adjust <br /> the initial vacuum level shown on the gauge.. the vacuum level . ); <br /> 3 . After I minute, record the ending vacuum level stopwatch or other time-measurement device <br /> capable of measuring a I - second increment . <br /> Upon completion of the test, release the vacuum, <br /> remove the test apparatus and the Basketing mate- WARNING : Use only an alr•operated vacu- <br /> rial from the spill bucket and replace the original um source or a vacuum pump powered by <br /> cover, an explosion-proof motor. Vacuum pumps <br /> with electric motors that are not explo- <br /> slon-proof may Ignite flammable vapors . <br /> If a portable air compressor is used , it <br /> should be located at least 20 feet away <br /> Rip from the venturi-eductor or outside any <br /> { Class I , Division 1 area . <br /> I <br /> Vacuum <br /> sourca Coning Valve <br /> ` 0 • 30" Water Column <br /> Vacuum Gauge <br /> @egulatu; <br /> FIGURE 6-3 . The vacuum test method can detect a spill <br /> bucket leak by measuring the change in vacuum level <br /> during the test. <br /> 6 .3 .6 Pass/Fail Criteria. if the ending vacuun ► <br /> level is 26 inches water column or greater, the spill <br /> bucket passes the test, <br /> If the ending vacuum level is less than 26 inches <br /> water column, the spill bucket fails the test . <br /> 6 .4 Double=Walled Spill Bucket Integrity Testing — FIGURE 6 4. Check lines and connections to ensure <br /> Vacuum Test Method . that they are leak-tight before starting the test, <br /> 6.4. 1 Purpose . This method is used to test the <br /> integrity of the primary and secondary containment 6.4.4 Preparation . <br /> of the double-walled spill bucket . <br /> 1. Remove and properly dispose, of any liquid and <br /> 6.4.2 Description of Test . A partial vacuum is debris (leaves, sediment and trash) in the spill �../ <br /> applied to the interstitial space between the primary bucket, <br /> pei .org <br />