COMPLIANCE INFO_2019 - Laserfiche WebLink

Home Browse Search

i Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities 2. Clean the spill bucket and examine it for dam- 6. 5.1 General . Containment sumps are liquid- age . Make sure that it is free of cracks, loose tight structures designed to temporarily contain parts or separation of the bucket from the till leaks or spills , In addition , containment sumps. pipe . if the spill bucket is damaged notify the often serve as the leak detection monitoring loca- owner/operator. tion for double walled piping systems , Leakage 3. Attach the test apparatus to the test port . from the primary contamnient typically flows by gravity inside the secondary containment to the 4. Connect the line from die vacuum source to the sump, where it can be easily observed or detected test apparatus . by a sensor. 5. 1f the spill bucket is found to have cracks, loose This section descril_ies a hydrostatic test method , parts or separation of the bucket from the rill There are vacuum test methods available for con- pipe, it is not considered to be liquid- tight . This tainment sumps , Consult the manufacturer before �risuall � indicates a test failure. performing a vacuum test. 6.4. 5 Test Procedure . NOTE: Follow the manufacturer 's instructions 1. Slowly apply a vacuum of 15 inches water when testing the interstitial spaces of double- column to the spill-bucket interstitial space and walled containment sumps , close the control valve. If a 15-inch water col- - umn vacuum cannot be attained, the spill bucket 6 , 5, 2 Purpose. This section describes the ptvp- fails the test. See Appendix B for pressure. and aration and procedures to test the intef=rity of con. vacuum conversions . tainment sumps to ensure that they do not leak . 2 . Start die time-measurement device tuid record 6 , 5 ,3 Description of Test . The containment the initial vacuum level shown on the gauge . sump is filled to the proper level with water. The 3. Alter I minute , record the ending vacuum level , water level is measured at the bcoinning and end of the test , Upon completion of the test, release the vacuum, remove the test apparatus and restore the spill 6 . 5.4 Test Equipment. Test equipment shall bucket to its nornial operating condition . include : 6.4, 6 Pass/ Fail Criteria . If the ending vacuum water, level is 12 inches water column or greater, the spill measuring stick that is accurate to within 1 / 16 bucket passes the test , (0.063 ) inch and of sufficient length; If the ending vacuum level i less than 12 incites • stopwatch or other time" measurement device water column , the spill ])ticket fails the: rest . capable of measuring a 1 -second increment. 6, 5 Containment Sump Integrity Testing . 6 . 5. 5 Preparation . - - - - — — _ - 1. Care should be taken when conducting the test CAUTION ; Gaining access to the contain- in the run 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 components can be heavy. They may debris (leaves, sediment and trash ) in the con- require special handling and more than tainment sumpr 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- testingIs 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 intpmperly where they are secure and Isolated from installed components, if there are loose com - vehicle and customer traffic . poncnts (e .g„ loose penctnation fitting clamps or missing interstitial space caps ) , c=orrect these items before performing the integrity test . If peLorg 49