Laserfiche WebLink
SECTION A — All Single • Double <br /> For All Tests: REMOVE AIR SUPPLY <br /> DO Step 1 <br /> ♦ Install air gauge at the fitting where the air pressure Close the air supply valve to the primary tank. <br /> hoses connected to the primary tank. Step 2 <br /> ♦ Install a second gauge in some other primary tank fit- <br /> Disconnect the air supply (see figure 4). <br /> ting to use as a check against the first primary tank PRESSURIZE ANNULAR SPACE <br /> gauge to insure that the tank is not over pressurized. <br /> Step 1 <br /> ♦ Install a third gauge connected to the annular space Open the manifold valve in order to pressurize the tank <br /> at thE manifold assembly annular space (see figure 4). <br /> ♦ Use a maximum 15 psi air gauge with 1/4 or 1/2 Ib. Step 2 <br /> increments. Pressure in primary tank may drop slightly. <br /> FIGURE 4 <br /> ♦ A contractor supplied pressure relief valve must be con- <br /> nected to the primary tank for additional protection.The Air supply To air supply Manifold <br /> relief valve should be sized and set to prevent the tank valve closed <br /> (disconnected) valve open <br /> from ein pressurized in excess of the maximum al- gauge <br /> g p Air gauge <br /> lowe test pressure. <br /> DO NOT <br /> ♦ Lift or hoist a tank under pressure.This could result in ystem <br /> h tank) <br /> personalinjury. <br /> Annular space fitting or Reservoir <br /> 11 VISUAL AIR/SOAP TEST <br /> DO NOT Connect the air supply directly to the an- <br /> nular space monitoring fitting or tank damage will Monitor the pressure readings for at least 30 minutes. <br /> result. <br /> Outer Wall Test Step 2 <br /> At the same time, cover tank outer surface with soap <br /> PRESSURIZING TANK solution (see Visual Air/Soap Test). <br /> Step 1 Step 3 <br /> Clos manifold valve between primary tank and Carefully inspect for leaks as indicated by bubbles. <br /> annular space (see figure 3). Inner Wall Test <br /> Step 2 Ste 1 <br /> Pressurize primary tank to 5 psi maximum. Close manifold valve to annular space. <br /> Step 3 Step 2 <br /> Use pressure relief valve. Open air supply valve to vent primary tank. <br /> Step 3 <br /> Maintain 5 psi pressure on the annular space. <br /> Do not connect the air supply directly to the Step 4 <br /> annular space monitoring fitting or tank damage Monitor air gauge on tank for another 30 minutes, but <br /> not more than 60 minutes. <br /> will result. <br /> After successfully completing air test: <br /> FIGURE 3 Step 1 <br /> Manifold Release pressure. <br /> Air supply to air supply valve <br /> valve open Step ep 2 <br /> Air gau e Disconnect and remove air manifold fittings, hose and <br /> Air gauge valve. <br /> Manifold system <br /> (supplied with tank) <br /> Annular space fitting or Reservoir <br /> 6 <br />