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Hydrostatically • • TestingD8, D9 <br /> 11. Pressurize all compartments to 5 psig 4. Add only enough monitoring fluid to cover the rib <br /> (3 psig for 12'tanks). inside the reservoir. Do not overfill past the rib at <br /> (see Figure D8-2) this time(see Figure D9-1). Final monitoring fluid <br /> levels will be set later in the installation process. <br /> Figure D8-2 <br /> Figure D9-1 <br /> Air Supply Air Supply Air Supply <br /> Vented Reservoir Vented Reservoir Plug <br /> Reservoir <br /> Monitoring <br /> Fluid Tank Rib <br /> 5psig <br /> 5 psig 5 psig 4 <br /> 5. Reinstall vented reservoir plug to ensure annular <br /> 12. Close valve on each"Tank Test Manifold." space is vented at all times. <br /> Disconnect the air supply line. 6. Remove enough tank fitting plugs to see inside each <br /> 13. Monitor the pressure for 30 minutes for any loss in compartment. <br /> pressure from the initial reading which may indicate 7. With a light, look inside for monitoring fluid. <br /> a leak. <br /> 8. Replace and tighten fitting plug(s). <br /> 14. With all compartments under pressure,cover 9. Connect"Tank Test Manifold"to each compartment. <br /> fittings and manway(s)with soap solution and <br /> inspect. 10. Connect the pressure source to the"Tank Test <br /> 15. After completing air test,release pressure. Manifold"on a compartment. <br /> 16. Remove all gauges,valves, and hose assemblies. 11. Pressurize the compartment to 5 psig <br /> (3 psig for 12'tanks). <br /> 17. Replace and tighten fitting plug(s). (see Figure D9-2) <br /> 18. Replace the plastic vent plug in the open fittings. Figure 1I <br /> D9. • •UBLE-WALL Valve Open Air Supply Valve Open <br /> HYDROSTATICALLY • • Vented <br /> COMPARTMENTReservoir <br /> BULKHEADS <br /> • 5 prig <br /> Never pressurize a wet annular space.Doing so <br /> may damage the tank or cause tank failure. 1 7 <br /> This tank has a hydrostatic monitoring system that <br /> includes a nontoxic(30%calcium chloride)green 12. Close the valve on the"Tank Test Manifold." <br /> monitoring fluid pre-installed between the tank walls. Disconnect the air supply line. <br /> In the unlikely event of a tank leak,this monitoring fluid 13. Monitor the pressure for 30 minutes for any loss in <br /> will leave a green trace on the tank. pressure from the initial reading which may indicate <br /> If monitoring fluid is found on the tank inner or outer a leak. <br /> surface during any test, discontinue the installation 14. Do not release air pressure. <br /> and immediately contact Containment Solutions Field <br /> Service. 15. Repeat steps 10 through 14 for each remaining <br /> compartment(see Figure D9-3). <br /> Perform the following in the order listed. <br /> 1. Comply with the requirements of Section C. <br /> 2. Closely inspect outer wall for any trace of green <br /> monitoring fluid. <br /> 3. With tank in upright position, remove the 4"vented <br /> plug from the reservoir fitting. <br /> 12 <br />