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Step #2 <br />• Close the air supply valve to the primary tank. <br />• Disconnect the air supply. <br />Step #3 <br />• Open the manifold valve in order to pressurize the <br />tank annular space. <br />• Pressure may drop slightly. <br />Manifold Air supply <br />valve valve closed to air supply <br />openAir Air gauge <br />gauge <br />Manifold system (supplied with tank) <br />Step #4 <br />• Monitor the pressure readings for at least 30 minutes. <br />• At the same time, cover tank outer surface with soap <br />solution (see page 3, Visual Air/Soap Test). <br />• Carefully inspect for leaks as indicated by bubbles. <br />Inner Wall Test <br />Step #5 <br />• Close manifold valve to annular space. <br />• Open air supply valve to vent primary tank. <br />• Maintain 5 psi pressure on the annular space. <br />Step #6 <br />• Monitor air gauge on tank for another 30 minutes, but not <br />more than 60 minutes. <br />After successfully completing air test: <br />• Release pressure. <br />• Disconnect and remove air manifold fittings, hose and <br />valve. <br />Testing Double -Wall Tanks (Hydrostatically <br />Monitored) with Annular Space Filled <br />This tank has a hydrostatic monitoring system that includes a <br />non-toxic colored monitoring fluid between the tank walls. <br />This fluid is a brine solution (30% calcium chloride). <br />In the unlikely event of a tank leak, this monitoring fluid will <br />leave a colored trace on the tank. <br />Reservoir Level Check: <br />DO <br />• Remove the 4" plug from the reservoir fitting. <br />• Inspect for monitoring tracer fluid. <br />• If reservoir is empty, immediately call Owens-Corning <br />Field Service (see phone numbers on page 2). <br />DO NOT <br />• Attach air pressure line directly to any annular space <br />fitting. <br />Outer Wall Test <br />Step #1 <br />• Closely inspect outer wall for any trace of colored <br />monitoring tracer fluid. <br />Important: If a colored fluid is found during any test, <br />discontinue the installation and immediately contact <br />Owens-Corning Field Service (phone numbers are <br />on page 2). <br />Step #2 <br />DO <br />• Tighten all fitting plugs to the annular space and <br />reservoir to avoid spilling monitoring fluid. <br />• Inspect tank bottom by lifting tank. <br />• After completing inspection of tank bottom, replace <br />tank on bumper pads. <br />DO NOT <br />• Rotate tank. <br />• Stand under tank while tank is in the air. Injury or <br />death could occur. <br />Step #3 <br />DO <br />• Connect air compressor to primary tank fitting. <br />• Use a pressure relief valve. <br />DO NOT <br />• Attach pressure line to any annular space fitting. <br />• Lift tank with pressure on it. This could result in personal <br />injury. <br />Step #4 <br />• Apply a soapy water solution to all fittings and manways. <br />• Check for leaks as indicated by bubbles. <br />• If bubbles are present; tighten the plugs or bolts and retest. <br />