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PEIIRP120012 <br /> pipe, it is not considered to be liquid- tight . This and secondary containment . The vacuum level is <br /> visually indicates a test failure. monitored for a I - minute period . <br /> 693. 5 Test Procedure . 6 . 4.3 Test Equipment. 'lest equipment shall <br /> 1. Slowly apply a vacuum of 30 inches water include . <br /> column to the spill t?ticket and close the valve . vacuum test apparatus (The ttatit apparatus may <br /> If a 30Anch water column vacuum cannot be be available from the spell = bucket manufacturer, <br /> attained, the spill bucket fails the test, See It includes an aur pressure regulator, a vacuum <br /> Appendix B for pressure and vacuum conver- source , it vacuum gauge with a minimum 0- 30 <br /> sions , inch water column range, It test fitting and a <br /> 2. Start the time-measurement device and record control 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 /> sion-proof may Ignite flammable vapors . <br /> if a portable air compressor is used , It <br /> should be located at least 20 feet away <br /> from the venturi-eductor or outside any <br /> Class I , Division 1 area . <br /> Vacuum -MOO, <br /> g�fCe Control Valve <br /> 0 - 30" Water Column <br /> Vacuum Gauge <br /> dr <br /> t <br /> "s�� —--- RE�it►At9f <br /> FIGURE 6-3. The vacuum test method can detect a spiry <br /> bucket leak by measuring the change In vacuum level - <br /> during the test, <br /> 6.3 .6 Pass/Fail Criteria. if the ending, vacuum <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 64 . 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 tate primary bucket, <br /> pei .org <br />