COMPLIANCE INFO_2002-2006 - Laserfiche WebLink

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3.3.2.7. Soap all service fittings and manways. Watch for active air bubbles, which indicate a leak. 3.3.2.8. Monitor the pressure for one hour. 3.3.3. SECONDARY TANK (EXTERNAL) 3.3.3.1. Maintain the pressure in the primary tank. CAUTION Do not connect air supply directly to the interstitial -space monitor fitting. Pressurizing the secondary tank (interstitial space) by itself may damage the primary tank or cause tank failure. 3.3.3.2. Free the hose from the service fitting by cutting the nylon tie. 3.3.3.3. Insert the hose into the quick -disconnect fitting. This will allow air to transfer from the primary tank to the secondary tank. 3.3.3.4. Reconnect the air -supply line. Allow the pressure to stabilize at 5 psig [3 psig for a 12 -foot -diameter tank] by adding or removing air as necessary. 3.3.3.5. Close the air -supply valve on the test manifold. Disconnect the air -supply line. 3.3.3.6. Soap the entire exterior of the tank, checking for leaks. (Follow instructions in Points 3.1.6. through 3.1.8., including Warnings following 3.1.8.) Watch for active air bubbles, which indicate a leak. Pay special attention to fittings and manways. 3.3.3.7. Monitor the pressure for one hour. 3.3.3.8. When the test is complete, carefully release the air pressure from the tank by opening the air -supply valve. 3.3.3.9. When the airflow stops, remove the test manifold. 3.3.3.10. Replace the protective covers in the service fittings. 3.4. TESTING A DOUBLE-WALL TANK WITH A WET INTERSTITIAL SPACE CAUTION Never pressurize a wet interstitial space. Doing so may damage the primary tank or cause tank failure. 3.4.1. PRIMARY TANK (INTERNAL) 3.4.1.1. Keep the tank vertical (the reservoir on top) at all times or the monitoring fluid may drain from the reservoir. 3.4.1.2. Remove all temporary service -fitting plugs and the reservoir -fitting plug. 3.4.1.3. Check the monitoring -fluid level in the reservoir. It should be about 1/4 full. 3.4.1.4. Visually check the interior of the tank for monitoring fluid. There should not be any. 3.4.1.5. Redope fittings and install plugs in all openings, except one service fitting (needed for the test manifold) and the reservoir fitting. Follow instructions in Point 3.1.5. Do not open the monitor fitting (if present) or monitoring fluid could be lost. 3.4.1.6. Install the test manifold in the open service fitting. Connect the pressure source to the test manifold. (See FIGURE 3-5.) Air -Supply /Valve Reservoir Fitting Ar -Supply A Gauge ply Gauge Pressure-Reliet Device FIGURE 3-5 3.4.1.7. Pressurize the primary tank to 5 psig. Allow the pressure to stabilize by adding or removing air as necessary. 3.4.1.8. Close the air -supply valve on the test manifold. Disconnect the air -supply line. 3.4.1.9. Soap all service fittings and manways. Watch for active air bubbles, which indicate a leak. Look through the laminate for any active air bubbles rising to the top. Their presence would indicate an internal leak. Also, check the reservoir for bubbles in the monitoring fluid. (The monitoring -fluid level will rise during the air test.) 3.4.1.10. Monitor the pressure for one hour. 3.4.1.11. When the test is complete, carefully release the air pressure from the tank by opening the air -supply valve. 3.4.1.12. When the airflow stops, remove the test manifold. 3.4.1.13. Check the level of the monitoring fluid in the reservoir. It should be at approximately the same level as the pretest level. 3.4.2. SECONDARY TANK (EXTERNAL) CAUTION Never pressurize a wet interstitial space. Doing so may damage the primary tank or cause tank failure. 3.4.2.1. Check the exterior of the tank for monitoring fluid. (The monitoring fluid is dyed blue to distinguish between moisture and monitoring fluid.) If monitoring fluid is found, wipe the tank dry and verify that the monitoring fluid does not reappear. Lift the tank to check the bottom. Do not roll the tank. WARNING Do not lift the tank when the tank is under pressure. This could result in death or serious injury. 3.4.2.2. Visually check the interior of the tank for monitoring fluid. There should not be any. 3.4.2.3. Replace the protective covers in the service fitting and the reservoir fitting.