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Recommended Practices for the Testing and Verification of Spill,Overfill,Leak Detection and Secondary Containment Equipment at LIST Facilities <br /> .Clean the spill bucket and examine it for dam- 6.5.1 General. Containment sumps are liquid- <br /> e. Make sure that it is free of cracks, loose tight structures designed to temporarily contain <br /> or separation of the bucket the fill leaks or spills. In addition, containment sumps <br /> eketta otify the often serve as the leak detection monitoring loca- <br /> operator. tion for double-walled piping systems. Leakage <br /> 3. ttach a test apparatus t the test o from the primary containment typically flows by <br /> gravity inside the secondary containment to the <br /> 4.C nnect line from vacu o ce to the sump,where it can be easily observed or detected <br /> appby a sensor. <br /> 5.If ill b et is and to e ,loose This section describes a hydrostatic test method. <br /> p o separ 'on f the bu et fr the fill There are vacuum test methods available for con- <br /> pi e,it i of c ered to liqui 'ght. This tairnnent sumps. Consult the manufacturer before <br /> vi wally in 'cates st fail performing a vacuum test. <br /> 6.4. Test P du <br /> NOTE:Follow the manufacturer's instructions <br /> 1.S wly apply vac of 5 ' hes water wbea testing the interstitial spaces of double- <br /> c umn to -bu c erstid space and walled containment sumps. <br /> cl se the c tro valy If 5-inc water col- <br /> vacu c t 'n th pill bucket 6.5.2 Purpose. This section describes the prep- <br /> the t t. See x B ssure and aration and procedures to test the integrity of con- <br /> v uum nversio tainnient sumps to ensure that they do not leak. <br /> 2.S th time- as nt devic d record 6.5.3 Description of Test. The containment <br /> th ini ' vac 1 els wn on sage. sump is filled to the proper level with water. The <br /> 3. r 1 min rd the en cu level. water level is measured at the beginning and end of <br /> Upo comp on the tesL e v um, the test. <br /> MM paratus and res re the ill 6.5.4 Test Equipment. Test equipment shall <br /> bu t is no operating condi n. include: <br /> 6.4. Pam/Fa 1 Criteria. If the ding vacuum • water; <br /> lev is 12 inches water column or eater,the spill • measuring stick that is accurate to within 1/16 <br /> b et passes the test. (0.063)inch and of sufficient length; <br /> I the ending vacuum level is less than 12 inches • stopwatch or other time-measurement device <br /> water column,the spill bucket fails the test. capable of measuring a 1-second increment. <br /> 6.5 Containment Sump Integrity Testing. 6.5.5 Preparation. <br /> L Care should be taken when conducting the test <br /> CAUTION: Gaining access to the contain- in the rain or during freezing weather condi- <br /> ment sump requires removing the lid, tions. <br /> cover or dispenser panel that is in place to <br /> protect the equipment in the sump.These 2.Remove and properly dispose of any liquid and <br /> components can be heavy. They may debris (leaves, sediment and trash) in the con- <br /> require special handling and more than <br /> tainment sump. <br /> one person to remove them. Use caution 3.Inspect the containment sump for damage. <br /> when moving and replacing them when Examine all penetration fittings,conduits,junc- <br /> testing Is complete. During the test, put tion boxes,caps and risers(if present),and side- <br /> the covers and panels in a safe location wall seams for defects, damage or improperly <br /> where they are secure and Isolated from installed components. If there are loose com- <br /> vehlcle and customer traffic. ponents (e.g., loose penetration fitting clamps <br /> or missing interstitial space caps), correct these <br /> items before performing the integrity test. If <br /> pei.org <br />