Laserfiche WebLink
Recommended 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 fo <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- <br /> 63 <br /> nation from water intrusion. . . 3 Test Equipment . Test equipment shal <br /> r .. . . . . 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 manufacturer <br /> be permanently plugged . It includes an air pressure regulator, a vacuun <br /> . . 1 .110 _ . I,MII 1 11 . . % source, a vacuum gauge with a minimum 0-5 ( <br /> 6 .2 . 5 Test Procedures inch water column range and a control valve <br /> The control valve is used to adjust the vacuun <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 <br /> o the water to settle for 5 minutes before the initial test cover (The cover is equipped with a test fit <br /> water level measurement is taken. ting. ) ; <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 devict <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 ° <br /> stick must remain the same for each water level gasketing material (The purpose of the gas <br /> measurement. Document the initial water level keting material is to provide an air-tight sea <br /> measurement as measured from the bottom of between the test cover and the spill bucket. ) . <br /> the spill bucket. Alternative measurement meth- <br /> ods may be used provided that measurement to Vacuum Vacuum Gaer uge <br /> 1 / 16 (0.063) inch can be made. source <br /> 3 . Take all precautions to prevent the water level o <br /> from being disturbed during the duration of the <br /> test. Control <br /> Valve <br /> 4 . After 1 hour, document the ending water level <br /> measurement. <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 <br /> it to service. Plumber's Plug in <br /> Tank Riser Pipe <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 . 3 Spill Bucket Integrity Testing -- Vacuum Test <br /> Method , FIGURE 6-2. The cover must make a tight seat with the <br /> 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= 4 . <br /> maty containment of secondarily contained spill <br /> buckets . I <br /> +IAh'XINil0 i° Use only an air•operated vac- <br /> uum ' goure or a vacuum pump pow- <br /> 6 .3. 2 Description of Test . Using a spe�ally .: f Herod l0Yi ex losion•proof motor. Vacuum <br /> equipped test cover, a partial vacuum is applied to pumps with electric motors that are ' not <br /> C' NVIHONME , I 'xl . ei : rV g { pei . arg <br />