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PLASTEEL° UNDERGROUND TANK APPENDIX B INTERSTITIAL VACUUM TEST (IVT) 1.0 Introduction: This test method has been developed by down on the ELUTRONO jacketed tank may require PLASTEEL INC.to meet the E.P.A.Alternate(Non-Volumetric)Tank Tightness reiteration due to the slow nature of air movement in the test procedures. The IVT has been verified by a third party to be capable of interstitial space. detecting a 0.1 gal/hr leak rate with a probability of detection of 100%when all 5.4 To ensure a vacuum has been established,the gauge must of the testing criteria are met. The false alarm rate for a tight tank is less than read 10"hg.for three(3)hours without any decrease on 5%.It is impossible to maintain a steady vacuum if a leak is present.This test is the gauge before proceeding with 5.6. Contact the not necessary to attain the PLASTEEL®tank warranty.This test is offered as a factory if the vacuum cannot be established per this stand alone leak tightness test method. paragraph. 2.0 Application: The IVT is applicable to the PLASTEEL® 5.5 Complete sections II and III of the Certificate of ELUTRON® (jacketed) Double-wall tank and the PLASTEEL® Composit Tightness Test. Double-wall tank. For compartmented tanks, consult the factory for the test 5.6 Refer to the Test Time Table (Figure 6.0) to determine time. the correct minimum time period for a valid test. 3.0 Authority: The Jurisdiction Having Authority(JHA)will determine Begin timing the test after completing 5.4. Record the whether the double-wall UST must be subject to a leak tightness test before nominal tank capacity, primary tank product and placing the UST in service. required test hours in Part IV of the Certificate. 4.0 Pre-Delivery Procedure: 5.7 After the required test time has passed, observe the gauge reading and record the reading, date and time of 4.1 Read and understand the PLASTEEL® Tank Installation day in Part IV of the Certificate. instructions and Appendix B before attempting the interstitial 5.8 Test Conclusions:The tank has passed the leak tightness vacuum test. Contact the PLASTEEL®tank manufacturer if you p g have any questions. test when the final gauge reading has not decreased from the initial gauge reading of 10"Hg.If other observations 4.2 Consult the PLASTEEL® tank manufacturer before the tank is are made,consult the tank manufacturer. shipped to ensure that the tank is delivered with the test gauge assembly. This assembly is an optional piece of equipment Test Time Tables: The table in Figure 6.0 lists the supplied by the tank manufacturer. minimum test period(in hours) to perform a valid IVT with a 4.3 Prior to shipment from the factory, you may request that the dr (air only) primary tank. The IVT test may be performed manufacturer deliver the tank with the vacuum established. with gasoline,diesel or water in the primary tank. Consult the PLASTEEL® tank manufacturer for the specific test time for 4.4 Upon delivery, the delivery document will indicate the correct these situations. vacuum gauge reading. Call the factory if the gauge reading does meet the gauge reading specified on the delivery document. TEST TIME TABLE:DRY PRIMARY TANK 4.5 To maintain the vacuum during the unloading and installation phases, extreme care must be taken to ensure the IVT gauge CAPACITY JACKETED COMPOSIT assembly is not jarred, struck or moved in any manner. Call the (GALS.) (HOURS) (HOURS) factory for instructions if the vacuum has decreased. 500 4.0 4.5 5.0 Test Procedures: 1,000 4.0 5.5 QUICK 5.1 If the vacuum was established at 2,000 4.0 8.0 DISCONNECT BUTTERFLY deliveryand has not decreased (Optional) VALVE 3,000 4.0 9.0 1 during the unloading and installation phases, you may 4,000 4.0 9.5 by-pass 5.2 and 5.3 5,000 4.0 10.5 5.2 Install the vacuum gauge test 6,000 4.0 11.0 .� assembly (see Fig. 5.0) in the 8,000 4.0 13.0 monitor access NPT coupling on r the tank top centerline. Ensure 10,000 4.0 14.5 .o INTERSTITIAL that any additional monitor 12,000 4.0 15.5 MONITOR access couplings are properly 15,000 4.0 17.5 _ FITTING sealed with threaded plugs. 20,000 4.0 20.5 5.3 Connect the vacuum pump to the test gauge assembly and 30,000 4.0 37.5 FIGURE 5.0: VACUUM GAUGE draw down to 10" hg. Record 40,000 4.0 45.5 TEST ASSEMBLY(TYPICAL). initial gauge reading, date, and ACCURACY:ASME(ANSI)GRADE B, 50000 4.0 53.0 2%, 0-30"Hg,with 1"Hg GRADUATIONS. time of day in Part IV of the , Certificate. The initial pump FIGURE 6.0 YOUR Licensed PLASTEEL®tank manufacturer is: APP.B,1106