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CC <br /> PEI/RP1200 - 12 <br /> records or the ATG readout. Prepare a monitoring <br /> fluid solution to add to the interstitial space. 5 .. PIPING :. SECONDARY <br /> 4.3.6 steel Tanks. Liquid-filled (hydrostatic) CONTAINMENT. INTEGRITY <br /> tests on steel tanks require the same fluid as the 'TESTING <br /> monitoring fluid . Contact the manufacturer for <br /> IF <br /> instructions . 5. 1 General . Underground product piping is available <br /> 4 .3 . 7 Fiberglass Tanks . Determine tank size with single and double walls . Double-walled piping pro,,,, <br /> and diameter and apply the appropriate method . vides containment for leaks from primary containment <br /> and must be leak-free to prevent release of product into <br /> 4 .3. 8 Test Equipment. Test equipment shall the environment, <br /> include: <br /> 5. 2 Purpose . This method is used to test the integrity <br /> • monitoring fluid; of piping interstitial space(s) . <br /> • stopwatch or other time-measurement device 5.3 Description of Test. The interstitial space is <br /> capable of measuring a 1 -second increment ; sealed at the ends and is pressurized with an inert gas . <br /> • tape measure. The pressure is monitored for 1 hour. If any pressure drop <br /> 4.3 . 9 Test Procedure. occurs , the secondary containment rails the test. <br /> 1. Remove any sensor that may be installed in the 5.4 Test Conditions . The primary pipe may contain <br /> tank interstitial space, fuel , and dispensing activities may continue during the <br /> test without affecting lest results. <br /> 2. Determine and record the groundwater level . <br /> 5. 5 Preparation . If the interstitial space contains prod,,, <br /> 3m Add test liquid to the taiilc interstitial space uct, ensure that the interstice is open to the atmosphere <br /> bringing the fluid level into the riser (stand- and perform a precision test on the primary piping before <br /> pipe) to the appropriate level based on the conducting a test on the secondary containment piping. <br /> manufacturer's written procedure. <br /> 4 , Document the starting level and start time of Termination fittings must be sealed at all piping termma- <br /> the tests tions, and test fittings must be accessible to perform the <br /> test. <br /> 5. Start the lime- measurement device. <br /> Check with the piping manufacturer regarding testing <br /> 6. Wait the appropriate time according to the procedures and the proper pressure before testing. Test- <br /> manufacturer 's test procedure. _ I r ; , V A.A J.X n AI "35 IF I <br /> 7 . Document the ending level and ending time ofj <br /> the test . h >f ; I IF <br /> t; F4 IF <br /> ' ;` � � ; <br /> pr I <br /> 8. Determine and record the groundwater level . , " `t <br /> IF <br /> 9 . Remove liquid added to the tank interstitial6. <br /> space, and restore the liquid level in the tank <br /> o <br /> ,l ; ; K ! <br /> interstitial to normal operating condition, ;•:' � �,„,,,;, �,-, ;; <br /> 1.0. Reinstall the sensor so that it is installed within <br /> manufacturer ' s specifications . <br /> 4.3 .10 Pass/Fall Criteria. Compare the data toii'' <br /> the manufacturer 's pass/fail criteria in Appendix A <br /> to determine if the tank has passed the lest. I 3 , ji OFF <br /> �IF IfIF <br /> r r10 � R1; <br /> 1 : 1 <br /> � � ' FIFiWI IIF IF9 <br /> FIGURE 5.1 . Boots on piping transitions and through <br /> sump walls must be leak-tight when piping secondary <br /> containment Integrity testing Is performed. <br /> �i pei . org <br />