Laserfiche WebLink
3.1.6.4.For testing a single-wall multicompartment tank with a <br /> single bulkhead,see SECTION 3.5. <br /> 3.1. GENERAL 3.1.6.5.For testing a single-wall multicompartment tank with <br /> 3.1.1.Xerxes tanks are tested prior to shipment, but all double bulkhead(s),see SECTION 3.6. <br /> tanks must be retested prior to installation–even if shipped <br /> with vacuum–in order to verify the absence of shipping and 3.1.6.6.For testing a double-wall multicompartment tank with <br /> handling damage. dry interstitial space,see SECTION 3.7. <br /> 3.1.2.The tester is responsible for verifying that all of the test 3.1.6.7.For testing a double-wall multicompartment tank with <br /> equipment is in good working condition,and is properly liquid-filled interstitial space,see SECTION 3.8. <br /> configured and calibrated. <br /> 3.1.7. If damage is detected, do not attempt repairs. Contact <br /> 3.1.3.Construct a test manifold as shown in FIGURE 3-1.The the UST coordinator at the Xerxes plant nearest you.Telephone <br /> air-supply gauge must have a maximum full-scale reading of 15 and fax numbers are found on the back cover of this manual. <br /> psig with 114-Ib.or 1/10-Ib.increments,and a pressure-relief <br /> device set at 6 psig[4 psig for 12-foot tanks]. 3.1.8.After installation and before backfilling to grade,testing <br /> must be repeated to verify that no damage has occurred during <br /> From Air Supply installation. <br /> AWARNING <br /> Air-Supply When the tank is under pressure, the manways and/or <br /> Valve <br /> fittings may dislodge, or the tank could rupture and result <br /> in death, serious personal injury or property damage. <br /> Pressure-belief Air-Supply Before beginning the test, notify all people on the test site <br /> Device Gauge to remain in a safe location. ALWAYS ATTEND TO THE <br /> TANK DURING THE TEST. Stand dear of manways, fittings <br /> and tank ends during the test. <br /> Service Fitting <br /> AWARNING <br /> FIGURE 3-1 The maximum test pressure is 5 psig[3 psig for a 12-foot <br /> tank]. Position the pressure gauge so that the pressure <br /> 3.1.4.In air tests,temperature change could be a factor in readings can be dearly read at all times. See FIGURE 3-2. <br /> changes in gauge readings. <br /> Note: Multiple test manifolds will be required to test —_ — <br /> multicompartment tanks. <br /> 3.1.5.It is the installer's responsibility to select a thread sealant I� <br /> that is compatible with the product being stored.Some sealants I I� <br /> cannot be used with some products.Remove,clean and redope <br /> all factory-furnished temporary plugs with appropriate thread �0 Max — <br /> sealant. Install permanent plugs in all unused openings.Make III 5 psig <br /> sure all manway bolts are tightened,and fitting plugs are <br /> properly doped and sealed. TME— <br /> 3.1.6.Refer to the appropriate section below for instructions for — 111111Jill[— <br /> the following situations: 11MMIM <br /> 3.1.6.1.For testing a single-wall tank,see SECTION 3.2. FIGURE 3-2 <br /> 3.1.6.2.For testing a double-wall tank with a dry interstitial <br /> space,see SECTION 3.3. AWARNING <br /> 3.1.6.3.For testing a double-wall tank with a liquid-filled The pressure-relief device or regulated air source must be <br /> interstitial space,see SECTION 3.4. rated at a maximum of 6 psig[4 psig for a 12-foot tank]to <br /> reduce the risk of overpressurizing the tank. <br /> 3 <br />