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Recommended Practices for the Testing and Verification of Spill,0veril€,Leak Detection and Secondary Containment Equipment at LIST facilities mary containment of secondarily contained spill buckets. WARNING: Use only an air-operated vacu- um source or a vacuum pump powered by 6.3.2 Description of Test. Using a specially an explosion-proof motor. Vacuum pumps equipped test cover, a partial vacuum is applied to with electric motors that are not explo- the spill bucket.The vacuum level is monitored for cion-proof may ignite flammable vapors. a l-minute period. if a portable air compressor is used, it should be located at least 20 feet away 6.3.3 Test Equipment. Test equipment shall from the venturi-eductor or outside any include: Glass I, Division y area. • Vacuum test apparatus (The test apparatus may be available from the spill bucket manufacturer. 6.3.4 Preparation. It includes an air pressure regulator; a vacuum source, a vacuum gauge with a minimum 0-50 1..Remove and properly dispose of any liquid and inch water column range and a control valva.The debris (leaves, sediment and trash) in the spill control valve is used to adjust the vacuwii level.); bucket.Clean the spill bucket and examine it for ■ Test cover (The cover is equipped with a test damage, defects or improperly installed compo- fitting.); nents.If there are loose components (e.g.,loose band clamps or bolls),tighten these items before • Plumber's plug(appropriate size,if used); performing the integrity test. If there are items • Stopwatch or other time-measurement device that must be repaired or replaced (e.g., deterio-- capable of measuring a 1-second increment; rated gasketslscals or drain valves), notify the owner/operator- to obtain approval before pro- • Gasketing material (Thr, purpose of the gas- ceeding with the needed repairs. keting material is to provide an air-tight seal 2 between the test cover and the spill bucket.). .Examine the fill cap and adapter fitting for loose,missing or damaged pails and make nec- essary repairs.Make sure that the seal on the fill ❑,50"water Column cap is present and in good condition, The cap Vacuum Vacuum Gauge must fit securely and be leak-tight on the riser. Source _ 7. A leaking cap will result in a tailed test. As an alternative to a tight till cap, use a plumber's plug in the fill riser. Contrfll Valve 3.The spill bucket drain valve,if present,must be leak-tight to pass the test, If the. drain valve is not leak-tight, it may be removed and perma- nently plugged. NOTE: Before permanently plugging, ensure that local regulations allow the drain valve to Plumber's be permanently plugged. Pipug e Riserr Pipe 4,Clean any contamination horn the top surface of the spill bucket where the cover makes a seal and line it with gasketing,material. S.PIace the test cover on the spill bucket,con- firn-ing that it makes a tight seal with the gas- keting material. FIGURE 6.2. The cover must make a tight seat with the 6.Connect the line from the vacuum source to the spilt bucket to prevent leakage when the vacuum is adapter on the cover. pulled during the test. 7.If the spill bucket is found to have cracks,loose parts or separation of the bucket from the fill pei.org