COMPLIANCE INFO_2019 - Laserfiche WebLink

Home Browse Search

preinstallation testing procedures. The date that the vacuum 4.4.8. Carefully release the air pressure from the tank. See was applied is on a label by the monitor or on the shipping SECTION 3.9. documentation delivered with the tank. 4.4.9. Remove the test manifold and replace the protective 4.3.1 .1 . This date may be used as a reference under this pro- covers in the service fittings. cedure to evaluate the tank's integrity prior to installation , and 4. 5 AIR TESTING A DRY MONITOR DOUBLE-WALL to validate Xerxes' obligations under the limited warranty. MULTICOMPARTMENT TANK NOT UNDER VACUUM 4.3.1 .2. Xerxes tanks shipped under vacuum must be under vacuum for a minimum of 7 days. If this requirement Is not met, CAUTION an air/soap test is required. See SECTION 4 for instructions. Do not connect air supply directly to the interstitial-space 4.3.1 .3. The tank shipped under vacuum should be installed monitoring access fitting. Pressurizing the interstitial space and backfilled with the vacuum intact if both of the followingby itself may result in damage to the primary tank and/or tank failure. two conditions are met: 4.5. 1 . Prepare the tank for air testing. See SECTION 3.4. 4.3. 1 .3.1 . installation of the tank is to begin 7 days or more after the factory application of vacuum (as indicated on the 4.5. 1 . 1 . Install a test manifold in each compartment, that is, in the base tank and each end compartment. See FIGURE 4- 1. shipping documents and/or tank labels) 4.3. 1 .3.2. the vacuum gauge shipped with the tank reads 12 inches of mercury or more. Typical lifting Optional reservoir manway lug Typical Monitoring access NOTE: The vacuum-monitorin method is less sensitive and (wet interstitial space) with fittings service fitting inters (dry g interstftiel space) less reliable than the soap test described In SECTION 3. 7. Pressure• / Under certain field conditions (such as major changes in relief valve temperature, barometric pressure and/or altitude) and/or for shippingEndEnd with certain equipment failure (such as freezing or sticking Compartment k8ase Compartment of gauge mechanism), the vacuum-monitoring method may not be an accurate enough test. When in doubt, or when Flat such conditions occur, Xerxes recommends SECTION 4.4. or Seam for base tank Rib 4.5. (whichever is applicable) as the preferred preinstallation Seam for end compartment Seam for end compartment test procedure. 4.3.1 .4. After the tank is backfilled to the top of the tank, the FIGURE 4-1 tank must be air tested. See SECTION 13 for instructions. 4.5.2. Pressurize the primary tank. See SECTION 3.5 and FIGURE 4-2. 4.3.1 .5. if either or both of the conditions stated in POINTS 4.3. 1 .3. 1 . and 4.3. 1.3. 2. are not met, follow the procedures of SECTION 4.4. or 4. 5. (whichever is applicable) for the prein- Air Test of Base Tank stallation test. 4.3. 1 .5.1 . If the gauge reads less than 12 inches of mercury, perform a visual inspection of the exterior of the tank and the vacuum gauge fittings to evaluate the tank's integrity, and contact the plant from which the tank was shipped. NOTE: Do not attempt unauthorized repairs. FIGURE 4-2 4.5.3. Pressurize the end compartment(s). See SECTION 3.5. 4.3. 1 .6. Record the vacuum gauge reading at the time of in- and FIGURE 44 stallation on the Tank Installation Checklist. 4.4. AIRTETTINGADRY4A0NTfIDR, DOUBLE WALLTANK Air Test of End Compartment(s) 4.4. 1 . Prepare the tank for air testing. See SECTION 3.4. 4.4.2. Pressurize the primary tank. See SECTION 3. 5. 4.4.3. Soap all service fittings and manways. See SECTION 3. 7. 4.4.4. Hold and monitor the pressure in the primary tank for a minimum of 1 hour. FIGURE 4-3 4.4.5. Use the quick disconnect assembly to pressurize the in- 4.5.4. Soap all service fittings, manways and covers. See terstitial space. See SECTION 3. 6. SECTION 3. 7. 4.4.6. Soap the entire exterior of the tank. See SECTION 3. 7. 4.5.5. Hold and monitor the pressure for a minimum of 1 hour. 4.4.7. Hold and monitor the pressure in the interstitial space 4.5.6. Use the quick-disconnect assembly to pressurize the in- for a minimum of 1 hour. terstitial space. See SECTION 3.6. and FIGURE 44. 7