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Recqmmended Practices for the Testing and Verification of Spill , Overfill, Leak Detection and Secondary Containment Equipment at UST FacilitiE <br /> NOTE : If the fill cap. is not included in the the spill bucket. The vacuum level is monitored fc <br /> spill bucket test and/or the cap is not tight, it a 1 - minute period , <br /> could be the source of potential fuel contami- 6 . 3 . 3 Test Equipment . Test equipment sha <br /> i nation from water intrusion . <br /> _. . _ . include; <br /> NOTE : 'Before permanently plugging , ensure vacuum test apparatus (The test apparatus ma <br /> that local regulations allow the drain valve to be available from the spill bucket manufacture <br /> be permanently plugged . It includes an air pressure regulator, a vacuut <br /> - . - . - - _. . . . . __ .. . . . . source, a vacuum gauge with a minimum 0-5 <br /> inch water column range and a control valv( <br /> 6 , 2 . 5 Test Procedure . The control valve is used to adjust the vacuut <br /> 1 . Add water to the spill bucket to a level within level . ) ; <br /> 1 . 5 inches of the top of the spill bucket . Allow ° test cover (The cover is equipped with a test fi <br /> the water to settle for 5 minutes before the initial ting . ) ; <br /> water level measurement is taken. <br /> 2 . Place the measuring stick vertically at the lowest plumber ' s plug (appropriate size, if used) ; <br /> point in the spill bucket and extending above the stopwatch or other time-measurement devic <br /> water level to allow for an accurate measure- capable of measuring a 1 -second increment; <br /> ment to be taken . The location of the measuring ° gasketing material (The purpose of the gat <br /> stick must remain the same for each water level keting material is to provide an air-tight se; <br /> measurement . Document the initial water level between the test cover and the spill bucket . ) . <br /> measurement as measured from the bottom of <br /> the spill bucket . Alternative measurement meth- 0 50" water column <br /> I ods may be used provided that measurement to Vacuum Vacuum Gauge <br /> i <br /> 1 / 16 (0 . 063 ) inch can be made , source <br /> 3 . Take all precautions to prevent the water level <br /> from being disturbed during the duration of the control <br /> test. Valve <br /> I <br /> 4 . After 1 hour, document the ending water level <br /> measurement. <br /> VIP ; <br /> 5 . Upon completion of the test, remove and dis- <br /> pose of the water according to Section 6 . 7 , and <br /> dry the inside of the spill bucket before returning Plumber's Plug Ir <br /> it to service . Tank Rlaer Plpe <br /> 6 . 2 . 6 Pass;/ Fail Criteria . If the water level has <br /> dropped less than 1 /8 (0 . 125) inch, the spill bucket <br /> passes the integrity test . <br /> If the water level has dropped 1 /8 (0 . 125 ) inch or <br /> greater, the spill bucket fails the integrity test. <br /> 6 . Spill Bucket Integrity Testing — Vacuum Test FIGURE ,6-2 . The cover must make a tight seal with the <br /> Method . spill bucket to prevent leakage when the vacuum is <br /> 6 . 3 . 1 Purpose . This method is used to test the pulled during the test, <br /> integrity of single-walled spill buckets or the pri <br /> mary containment of secondarily contained spill � <br /> buckets , Use only an alr• operated vac- <br /> uum source or a vacuum pump pow- <br /> 6 . 3 . 2 Desoriptlon of Test. Using a specially ere, d by an, explosion-proof motor. Vacuum <br /> equipped test cover, a partial vacuum is applied to pumps with electric motors that are not <br /> NVIHuivMls= lVIAL HEALTH <br /> DEPARTMENT pei . org <br />