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Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities : Clean the spill bucket and examine it for dam- 6. 5,11. General . Containment sumps are liquid- 3$e. Make sure that it is free of cracks, loose tight structures designed to temporarily contain pets or separation of the bucket from the fill leaks or spills. In addition, containment sumps thee-spill- bucketla dam aged,inotify the often. serve as the leak detection monitoring loca- wn /operator. tion for double-walledpiping systems . Leakage . t' ttach� e test apparatus t the test o = . from the primary containment typically flows by gravity inside the secondary containment to the 4•. C nnect line from tit vacuum, soil ce to the sump, where it can be easily observed or detected tel apparat by a sensor. 5. If h� ill b et is I and to h e Bks, loose its o se . on f the u e This section describes a hydrostatic test method . p _ p b t fr� the fill There are vacuum test methods available for con- pe, It 29rot COrtered to b hqulgllt. This tainment sumps. Consult the manufacturer before vi wally int cate IS st fail e. performing a vacuum test. 6.4. Test Pry duP NOTE: Follow the manufacturer's instructions . Sly wly apply . vac u of X15 hes water when testing the interstitial spaces of double 44 umn to sell-buc et rstiti0 space and walled containment sumps . cl se the co ' trof valy JA If i5-inc water col- P urri vacuwji cannot e a ammj, theIspill bucket t � 6. 52 Purpose. This section describes the prep- fa s the t�t. See e , 'x B ssure and p aration and procedures to test the integrity of con- AW Gti)nversio S ' e � tainment sumps to ensure that they do not leak. 2 • Stitt tlr ;�trme- �aspret • �nt devYce��nd record ri 8. 5.3 Description of Test. The containment th intik vacu rrn 1 el sl�wn on t� e�yrauge. IM sump is filled to the proper level with water. The S. . r 1 rninul. , re "ord the eridi v�cuul level. water level is measured at the beginning and end of F t Upo compion o the t%o rel_eas the vatuum, the test. remote th0 =testparatus and restore the Will 6. 5.4 Test Equipment. Test equipment shall buck „ to its no l operating condil�> on. include: 6A Pass/Fail Criteria. If the ding vacuum water; 10 lav rs 12 inches water column or eater, the spill rneasuring stick that is accurate to within 1 /16 but let passes the test (0 .063) inch and of sufficient len Wthe ending vacuum level is less than 12 inches stopwatch or other time-measurement device water column, the spill bucket fails the test. capable of measuring a 1 -second increment. 6A Containment Sump Integrity Testing. 6. 5.5 Preparation. 1. Care should be taken when conducting the test CAUTIONs Seining access to the contain- in the rain or during freezing weather condi- ment sump requires removing the lid, tions. cover or dispenser panel that is in place to protect the equipment lin the sump. These 2. Remove and properly dispose of any liquid and components can be heavy. They may debris (leaves, sediment and trash) in the con- require special handling and more than tai3nment sump, one person to remove them . Use caution 3. Inspect the containment sump for damage . when moving and replacing them when Examine all penetration fittings, conduits, junc- testing Is complete. During the test, put tion boxes, caps and risers (if present), and side- the covers and panels In a safe location wall seams for defects, damage or improperly where they are secure and Isolated from installed components . If there are loose com- vehicie and customer traffic, portents (e.g. , loose penetration fitting clamps or missing interstitial space caps), correct these items before performing the integrity test. If pehorg