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E Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities of the sump, add water to within 1 inch of the 6 .6 Accelerated Precision Hydrostatic Test for Spill I op of the sump . Buckets and Containment Sumps . Electronic preci- 2. Place the measuring stick vertically at the lowest cion test equipment can be utilized to test spill buckets and containment sumps. It incorporates more sensitive point in the sump and extending above the water equipment that permits a test to be conducted in a shorter i level in the sump to allow for an accurate mea- period of time: The procedures use the same test fluid and surement to be taken . The location of the mea- tests the same volume as other methods outlined in this suring stick must remain the same for each water II chapter. The manufacturer of the measurement equipment level measurement. Document the initial water should specify the precision and duration of the test and level measurement as measured from the bottom the pass/fail criteria. However, pass/fail criteria should of the sump. Alternative measurement methods not be less stringent than those prescribed for the 1 -hour may be used provided that the measurement to 1/16 (0.063 ) inch can be made. test in Section 6 , 5 .7 . 3 . Take all precautions to prevent the water level The data sheet for Sections 6 .2 or 6.5 may be used for this from being disturbed during the duration of the test. Refer to Appendix D. test. 6. 7 Proper Handling of Test Liquids. Test liquids 4. After 1 hour, document the ending water level must be handled properly. Check with the AHJ regarding TO measurement. requirements. S. Upon completion of the test: • remove all water and properly dispose of it according to Section 6 .7 , . • reinstall any interstitial monitoring sensors in their proper positions ; • return the test boots or secondary containment * fittings to theirpre-test operating configurations ; • inspect and reinstall all containment sump lids, `- E gaskets and covers . ITTt " � r Bevel FIGURE 6-7. The test fluid leve/ in the tank sump must be at least 4 inches above the highest sump penetra- Electrical tion or sidewall seam. Conduit xITProduct Plping ,c_ , 0 I , w 1 IT FIGURE 6=6, To prevent leakage, check all penetration fittings before adding water to ensure they make a tight r seal. R Ilk� FIGURE 6-8. Mea- ,' r suring sticks used 6. 5. 7 Pass/Fall Criteria. If the water level � . to measure the changes less than 1 /8 (0. 125 ) inch , the containment , water level should a I . - sump passes the integrity test. _ I be securely mount- If the water level changes 1/8 (0. 125) inch or great- r � � • t= Lit IT ' ' ed to ensure that they do not move er, the containment sump fails the integrity test. . during the test. pei .org 9