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Recqmmended Practices for the Testing and Verification of Spill, Overfill, leak Detection and Secondary Containment Equipment at UST Facil►t►e NOTE : If the fill cap. is not included in the the spill bucket. The vacuum level is monitored fc splll bucket test and/or the cap is not tight, it a 1 -minute period, could be the source of potential fuel contami- 6 .3.3 Test Equipment. Test equipment sha nation from water intrusion , include: vacuum test apparatus (The test apparatus ma NOTE : Before permanently plugging, ensure be available from the spill bucket manufacture that local regulations allow the drain valve to It includes an air pressure regulator, a vacuur be permanently plugged . source, a vacuum gauge with a minimum 0-5 ~ inch water column range and a control valyl 6 . 2 . 5 Test Procedure . The control valve is used to adjust the vacuur 1. Add water to the spill bucket to a level within level.) ; 1 , 5 inches of the top of the spill bucket, Allow ° test cover (The cover is equipped with a test fi the water to settle for 5 minutes before the initial ting. ) ; water level measurement is taken. 2 . Place the measuring stick vertically at the lowest plumber 's plug (appropriate size, if used) ; point in the spill bucket and extending above the stopwatch or other time-measurement devic water level to allow for an accurate measure- capable of measuring a 1 -second increment, ment to be taken, The location of the measuring ° gasketing material (The purpose of the ga; stick must remain the same for each water level keting material is to provide an air-tight ses measurement. Document the initial water level between the test cover and the spill bucket.) . measurement as measured from the bottom of the spill bucket. Alternative measurement meth- o • 500 Water Column ods may be used provided that measurement to Vacuum Vacuum Gauge 1/ 16 (0 ,063) inch can be made, source 3 . Take all precautions to prevent the water level o from being disturbed during the duration of the Control test. Valve 4. After 1 hour, document the ending water level measurement . see 5. Upon completion of the test, remove and dis- pose of the water according to Section 6.7 , and dry the inside of the spill bucket before returning Plumber's Plug it it to service, Tank Riser Pipe 6.2 .6 Paso/ Fall Criteria . If the water level has dropped less than 1/8 (0. 125) inch, the spill bucket passes the integrity test, If the water level has dropped 1/8 (0 . 125 ) inch or greater, the spill bucket fails the integrity test. 6 . $ Spilt Bucket Integrity Testing — Vacuum Test Method . FIGURE 6.2. The cover must make a tight sea/ with the spill bucket to prevent leakage when the vacuum Is 6 .3 .1 Purpose. This method is used to test the pulled during the test integrity of single-walled spill buckets or the pried, _ Ile . . .. .. .. . _. . . . ..: .._... _.... IPA .. ._ _ y ._ .. _ ..., mary containment of secondarily contained spill \',11AiZl'A11h ®na Use only an air-operated vac- buckets . uum source or a vacuum pump pow- ; 6 . 3 . 2 Description of Test. Using a specially eyed by an explosion-proof motor. Vacuum equipped test cover, a partial vacuum is applied to pumps with electric motors that are not pei .org