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• <br /> 5.9 Leak Detection Solution. Any liquid solution designed to detect vapor leaks <br /> may be used to verify the pressure integrity of system components during <br /> this test. <br /> Figure 3-3 <br /> Vapor Coupler Test Assembly <br /> POPPET ACTUATION PRESSURE GAUGE <br /> PROBE - <br /> u <br /> i <br /> GASKET / <br /> BLEEDER VALVE AND <br /> QUICK CONNECT FITTING I <br /> I <br /> 6. Pre-Test Procedures <br /> 6.1 The following safety precautions shall be followed: <br /> 6.1.1 Only nitrogen shall be used to pressurize the system. <br /> 6.1.2 A one psig relief valve shall be installed to prevent the possible <br /> over-pressurizing of the storage tank. <br /> 6.1.3 A ground strap should be employed during the introduction of <br /> nitrogen into the system. <br /> 6.2 Product dispensing shall not occur during the test. There shall have been <br /> no Phase I deliveries into or out of the storage tanks within the three hours <br /> prior to the test. <br /> G-70-164 Exhibit 3-4 <br />