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PEI/RP1200-17 pei.org14 6. SPILL BUCKET AND CONTAINMENT SUMP TESTING 6.1 General. Spill buckets and containment sumps for tank systems are neither intended nor designed for the storage of petroleum products, but rather to contain small leaks and spills for short periods of time. This section describes the procedures used to test the integrity of spill buckets and containment sumps to ensure that they do not leak. 6.2 Spill Bucket Integrity Testing — Hydrostatic Test Method. WARNING: Do not use fuels such as gaso- line, E85 or diesel as a test fluid because they present a serious fire and safety hazard. Gasoline vapors are flammable and can explode if exposed to an ignition source such as a spark or open flame. If a tank or containment area is not tight, using fuel as the test fluid will cause a release into the soil or groundwater. 6.2.1 Purpose. This method is used to test the integrity of single-walled spill buckets or the pri- mary containment of secondarily contained spill buckets. 6.2.2 Description of Test. The spill bucket is filled with water. The water level is measured at the beginning and end of the test. 6.2.3 Test Equipment. Test equipment shall include: • water; • measuring stick that is accurate to within 1/16 (0.063) inch and of sufficient length; •plumber’s plug (appropriate size, if used); • stopwatch or other time-measurement device capable of measuring a 1-second increment. 6.2.4 Preparation. 1.Care should be taken when conducting the test in the rain or during freezing weather condi- tions. 2.Remove and properly dispose of any liquid and debris (leaves, sediment and trash) in the spill bucket. Clean the spill bucket and examine it for damage, defects or improperly installed compo- nents. If there are loose components (e.g., loose band clamps or bolts), tighten these items before conducting the integrity test. If there are items that must be repaired or replaced (e.g., deterio- rated gaskets/seals or drain valves), notify the owner/operator. 3.Examine the fill cap and adapter fitting for loose, missing or damaged parts, and make necessary repairs. Complete any repairs before putting water in the spill bucket. Make sure that the seal on the fill cap is present and in good condition. The cap must fit securely and be leak- tight on the riser. The water level during the test typically will be above the cap, so a leaking cap will result in a failed test. As an alternative to a tight-fill cap, use a plumber’s plug in the fill riser if approved by the authority having juris- diction (AHJ) and tank owner. 4.The spill bucket drain valve, if present, must be leak-tight to pass the test. If it is not leak- tight, it may be possible to simply remove and permanently plug the drain valve. However, if you choose to permanently plug, ensure that the local regulations allow this modification. 5.If the spill bucket is found to have cracks, loose parts or separation of the bucket from the fill pipe, it is not considered to be liquid-tight. This visually indicates a test failure. Water Level FIGURE 6-1. The hydrostatic method of determining spill bucket integrity uses water to detect leaks. The measuring stick must be placed in the same location at the beginning and end of the test period to ensure accurate water level readings.#