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Recommended Practices for the Testing and Verification of Spill,0"Mil,leak Detection and Secondary Containment Equipment at UST Facilities Clean the spill bucket and examine it for dam- 8.5,1 General. Containment sumps are liquid- e. Make sure that it is free of cracks, loose tight structures designed to temporarily contain or separation of the bucket the fill leaks or spills. In addition, containment sumps If the spill bucket 1 otify the often serve as the leak detection monitoring loca- w /operator. tion for double-walled piping systems. Leakage 3. ttacha test apparatus t the test from the primary containment typically flows by gravity inside the secondary containment to the 4. nnect the line from vac a to the sump,where it can be easily observed or detected apparattis. by a sensor. 5 if Xspill bui ket is unci to a loose This section describes a hydrostatic test method. pi lus or separ"`'on f the bu t fr the fill There are vacuum test methods available for con- pile .t is•- of to liqui 'ght This tainatent sumps. Consult the manufacturer before A wally .cafes t fail performing a vacuum test. 6.4. Test u NOW:Follow the menufactmer's instructions I-S] -W.ly apply vacuo of 5 hes water wheu testing the interstitial spaces of double- c( umn to 1-buc et interstiti space and walled containment sumps. cl se the fro valy . If a IS-inc t water col- in n vacu ?t attained, the spill bucket G.S2 Purpose, This section describes the prep- " f the t . See .44erdix B for pressure and aration and procedures to test the integrity of con- vg um aversions. tainment sumps to ensure that they do not leak. 2.S1 th time-weasureoient device and record 6.53 Description of Test. The containment th ini vacuum]e vel sh_wn on sage. sump is filled to the proper level with water. The 3. 1 minute,record the en u level. water level is measured at the beginning and end of the test. upo completion oC the test, relea e v um, i rem test apparatus and restore the ill 6.5.1 Test Equipment. Test equipment shall t is norr 4d operating COndition. include: 6.4. Pass/FJ1 Criteria. If thee nding vacuum • water, lev is 12 inches water column or greater,the spill . measuring stick that is accurate to within 1/16 b t passes the test. (0.063)inch and of sufficient length; I the 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. 6.5 Containment Sump Integrity Tasting. 6.5.6 Preparation. 1. Care should be taken when conducting the test CAUTION: Gaining 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 2,Remove and properly dispose of any liquid and protect the equipment in the sump. These debris (leaves, sediment and trash) in the con- components can be heavy. They may require special handling and more than tsinment 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 corn- vehicle and customer traffic. ponents (e.g., loose penetration fitting clamps — - -- - or missing interstitial space caps), correct these items before performing the integrity test. If pei.org ID