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Double-Wall Hydrostatically - . TestingD6, D7 <br /> 3. With tank in upright position, remove the 4"vented DOUBLE-WALL <br /> plug from the reservoir fitting. D8. TESTING A <br /> 4. Add only enough monitoring fluid to cover the rib HYDROSTATICALLY MONITORED <br /> COMPARTMENT <br /> inside the reservoir. Do not overfill past the rib at . • BULKHEADS <br /> this time(see Figure D7-1). Final monitoring fluid <br /> levels will be set later in the installation process. <br /> Figure D7-1 <br /> Never pressurize a wet annular space. Doing so <br /> Reservoir Vented Reservoir Plug may damage the primary tank or cause tank failure. <br /> This tank has a hydrostatic monitoring system that <br /> Monitoring includes a nontoxic(30%calcium chloride)green <br /> Fluid Tank Rib monitoring fluid pre-installed between the tank walls. <br /> In the unlikely event of a tank leak, this monitoring fluid <br /> S { will leave a green trace on the tank. <br /> If monitoring fluid is found on the tank inner or outer <br /> 5. Reinstall vented reservoir plug to ensure annular surface during any test, discontinue the installation <br /> space is vented at all times. and immediately contact Containment Solutions Field <br /> 6. Remove enough tank fitting plugs to see inside the Service. <br /> primary tank. Perform in the following the order listed. <br /> 7. With a light, look inside for any monitoring fluid. 1. Comply with the requirements of Section C. <br /> 8. Replace and tighten fitting plug(s). 2. Closely inspect outer wall for any trace of green <br /> 9. Connect"Tank Test Manifold"to a primary tank monitoring fluid. <br /> fitting. 3. With tank in upright position, remove the 4"vented <br /> 10. Connect the pressure source to the"Tank Test plug from the reservoir fitting. <br /> Manifold." 4. Add only enough monitoring fluid to cover the rib <br /> �i 11. Pressurize primary tank to 5 psig maximum inside the reservoir. Do not overfill past the rib at <br /> (3 psig for 12'tanks) this time(see Figure D8-1). Final monitoring fluid <br /> (see Figure D7-2). levels will be set later in the installation process. <br /> Figure D7-2 Figure D8-1 <br /> Air Supply <br /> Reservoir Vented Reservoir Plug <br /> Primary Tank Fitting Vented Reservoir <br /> Monitoring Fluid Monitoring <br /> Fluid Tank Rib <br /> 5 psig <br /> Primary Tank { <br /> 5. Reinstall vented reservoir plug to ensure annular <br /> 12. Close valve on"Tank Test Manifold."Disconnect the space is vented at all times. <br /> air supply line. 6. Remove enough tank fitting plugs to see inside <br /> 13. Monitor the pressure for 30 minutes for any loss in each compartment. <br /> pressure from the initial reading which may indicate 7. With a light, look inside for monitoring fluid. <br /> a leak. <br /> 14. While under pressure,cover fittings and manway(s) 8. Replace and tighten fitting plug(s). <br /> with soap solution and inspect. 9. Connect"Tank Test Manifold(s)"to each <br /> 15. After completing air test, release pressure. compartment. <br /> 16. Remove all gauges,valves,and hose assemblies. 10. Connect the pressure source to the"Tank Test <br /> Manifold"on each compartment. <br /> 17. Replace and tighten fitting plug(s). <br /> 18. Replace the plastic vent plugs in the open fittings. <br /> 11 <br />