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PEI/RP1200-12 <br /> pipe, it is not considered to be liquid-tight. This and secondary containment. The vacuum level is <br /> visually indicates a test failure. monitored for a I-minute period. <br /> 6.3.5 Test Procedure. 6.4.3 Test Equipment. Test equipment shall ✓ <br /> 1.Slo%%1y y a PP?I a vacuum of 30 inches water include: <br /> column to the spill bucket and close the valve. vacuum test apparatus (The test apparatus may <br /> If a 30-inch water column vacuum cannot be be available from the spill-bucket manufacturer. <br /> attained, the spill bucket fails the test. See It includes an air pressure regulator, a vacuum <br /> Appendix B for pressure and vacuum conver- source. a vacuum gauge with a minimum 0-30 <br /> sions. inch water column range, a test fitting and a <br /> 2.Start the time-measurement device and record control valve.The control valve is used to adjust <br /> the initial vacuum level shown on the gauge. <br /> the vacuum level.); <br /> 3. After I minute,record the ending vacuum level. stopwatch or other time-measurement device <br /> capable of measuring a I-second increment. <br /> Upon completion of the test, release the vacuum, <br /> remove the test apparatus and the gasketing mate- WARNING: Use only an air operated vacu- <br /> rial from the spill bucket and replace the original urn source or a vacuum pump powered by <br /> cover. an explosion-proof motor. Vacuum pumps <br /> with electric motors that are not explo- <br /> sion-proof may ignite flammable vapors. <br /> If a portable air compressor is used. it <br /> .•�'r should be located at least 20 feet away <br /> from the venturi-eductor or outside any <br /> Class I, Division 1 area. <br /> Vacuum <br /> Source Carr.c 'valve <br /> aI 0 Sawafer Column <br /> Vacuum Gauge <br /> FIGURE 6-3. ,,,ie vacuum test method can detect a spill <br /> bucket leak by measuring the change in vacuum level <br /> during the test. <br /> 6.3.6 Pass/Fall Criteria. If the ending vacuum <br /> level is 26 inches water column or greater,the spill <br /> bucket passes the test. <br /> If the ending vacuum level is less than 26 inches <br /> water column,the spill bucket fails the test. <br /> 6.4 Double-Walled Spill Bucket Integrity Testing — FIGURE Cr-4. Check lines and connections to ensure <br /> Vacuum Test Method. that they are leak-tight before starting the test. <br /> 6.4.1 Purpose. This method is used to test the <br /> integrity of the primary and secondary containment 6.4.4 Preparation. <br /> of the double-walled spill bucket. <br /> 1.Remove and properly dispose of any liquid and <br /> 6.4.2 Description of Test. A partial vacuum is debris (leaves, sediment and trash) in the spill .� <br /> applied to the interstitial space between the primary bucket. <br /> ® pei.org <br />