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TANKTESTING 5.4.11. Close valve to annular space. Figure 5-7 5.4.12. Open valves to vent all compartmentsVented Reservoir Plug (maintain 5 psig on annular space) Reservoir (see Figure 5-6). Figure 5-6 Monitoring Fluid Tank Rib Valve Open Valve Open Valve Open 5 psig valve Closed (3 psig for 4 4 12'tanks) 5.5.7. Reinstall vented reservoir plug to ensure annular space is vented at all times. 5.5.8. Remove enough tank fitting plugs to see inside the primary tank. 5.5.9. With a light,look inside for any monitoring fluid. 5.4.13. Monitor the pressure for 30 minutes for any 5.5.10. Replace and tighten fitting plug(s). loss in pressure from the initial reading which 5.5.11. Connect"Tank Test Manifold"to a primary tank may indicate a leak. fitting. 5.4.14. While under pressure,cover tank outer 5.5.12. Connect the pressure source to the"Tank Test surface,including fittings and manway(s), Manifold" with soap solution and inspect. 5.5.13. Pressurize primary tank to 5 psig maximum 5.4.15. After completing air test,release pressure. (3 psig for 12'tanks) (see Figure 5-8). 5.4.16. Remove all gauges,valves,and hose Figure 5-8 assemblies. 5.4.17. Replace and tighten fitting plug(s). Firsupply 5.4.18. Replace the plastic vent plug in the open Primary Tank Fitting /vented Reservoir fittings. 5.5. Testing Double-Wall Tanks) Monitoring Fluid With Liquid Felled Annular Space 5 psig (Hydrostatically Monitored) (3 psig for 12'tank,l Primary Tank Never pressurize a wet annular space. Doing so may 5.5.14. Close valve on"TankTest Manifold."Disconnect damage the tank or cause tank failure. the air supply line. 5.5.15. Monitor the pressure for 30 minutes for any 5.5.1. This tank has a hydrostatic monitoring loss in pressure from the initial reading which Y g may indicate a leak. system that includes a green monitoring 5.5.16. While under pressure,cover fittings and fluid pre-installed between the tank walls. manway(s)with soap solution and inspect. 5.5.2. In the unlikely event of a tank leak,this 5.5.17. After completing air test,release pressure. monitoring fluid will leave a green trace on the tank. 5.5.18. Remove all gauges,valves,and hose assemblies. 5.5.3. If monitoring fluid is found on the tank inner 5.5.19. Replace and tighten fitting plug(s). or outer surface during any test,discontinue the installation and immediately contact 5.5.20. Replace the plastic vent plugs in the open Containment Solutions Field Services. fittings. 5.5.4. Comply with the requirements ofSection 4. 5.6. Testing Double-WaIICom artMent 5.5.5. With tank in upright position,remove the Tank(5 With Double Wall Bulkheads 4"vented plug from the reservoir fitting. (Hydrostatically Monitored) 5.5.6. Add only enough monitoring fluid to cover the rib inside the reservoir.Do not overfill past the rib at this time(see Figure 5-7).Final Never pressurize a wet annular space. Doing so may monitoring fluid levels will be set later in the damage the primary tank or cause tank failure. installation process. 10