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Tank Interstitial Tests: Normally Dry <br /> • Vacuum Test (typical) Venturi <br /> • 10"Hg for both FRP and vacuum <br /> Steel tanks pump <br /> • Hold for 1 hr (<20K) or 2 <br /> hours (>=20K) <br /> • Gauges 0-30"Hg with <br /> 0.5"Hg increments <br /> • No allowable loss <br /> • No liquid in interstitial _ <br /> • Or follow MFG specs or use <br /> 3rd-party cert. <br /> • Tanknology Procedure: <br /> s <br /> Redundant Vacuum Gauges 40 <br /> Cone-style <br /> test apparatus <br /> *This test method is described by PEI RP-1200 (Section 4) r <br />