U1 Ust Test|2023 Latest Update|Guaranteed Success

Observation wells are installed _____the excavation, while monitoring wells are installed _______the excavation. Inside, Outside After piping areas are backfilled, _______psi air pressure may be maintained in the piping, provided no product has been in the piping. 10 psi 00:43 04:07 In traffic areas, ensure that the trench is sufficiently deep to permit _______inches of bedding and at least _____ inches of compacted backfill above piping. 6, 18 T or F - Flexible connectors may be used for non-metallic or metallic piping. True What must be used on all pressurized piping systems to detect leaks? PLLD (Pressurized Line Leak Detector) Test new piping at _____psi for a period of ____minutes, soaping all joints. 50 psi, 60 minutes (1 hour) When sand is used: Sand is backfilled in 12 to 18 inch lifts and compacted after each lift. This needs to continue to a level that is _____% of the tanks height. 60% True of False: Couplings provided to protect pipe threads may be used underground, provided they are at least 18 inches below grade. False. Couplings furnished to protect pipe threads are disposable, and not to be used. True or False: Placement of the UST directly on the hold-down pad may be acceptable, depending on the manufacturer's specifications. False: Placement of the the tank directly on the hold down pad is never permitted. The _____degree factor should be used to avoid undermining nearby structures. 45 degree At least _____ feet of backfill is required between tanks and between the tank and excavation walls. 2 feet To provide a firm foundation, a tank should be set on a bed of backfill material at least _____ foot thick. One foot 00:01 04:07 When a bottom hold down pad is used beneath a steel tank, the thickness of the bedding material can be reduced to _____ inches. 6 inches Pressure imposed on tanks should not exceed _____ psi. 5 psi Overfill alarms must be set at ______% of tank capacity. 90% The maximum burial depth for Fiberglass tanks is _____ feet. 7 feet Five factors that aggravate excavations are: 1. Ground and surface water 2. Unstable soil 3. Backfill areas 4. Frost 5. Product and Vibrations Slope of an excavation is determined by what 4 factors? 1. Soil Conditions 2. Depth 3. Shoring requirements 4. Safety True or False: A tank shipped with a liquid filled interstice need not be subjected to the pre-installation air/soap test. True True or False: You should pressurize the interstice with air from the inner tank. True Pressure testing a tank should be monitored for how long? 1 hour True or False: Pressurizing the interstice with air pressure from the inner tank, after disconnecting the outside source, prevents over-pressurization. True True or False: It is standard practice to lower galvanic anodes by the lead wire. False Paving over tanks in traffic areas should extend at least _____ inches beyond the perimeter of the tank. 12 inches or 1 foot Regarding tanks: In areas subject to vehicle traffic. At least ____ inches of backfill and _____ inches of asphalt must be used. 30 and 6 True or False: Field coating of exposed metal fitting should be limited and used sparingly. True: Factory coatings should be used as much as possible. True or False: Maintaining electrical isolation of tanks and fittings is not required and does not affect the protection factors of the tank, provided the tank has not been modified from the manufactures specifications. False: Take care to maintain electrical isolation to prevent loss of protection on the tank and fittings. True or False: Isolation of piping from tanks and dispensers must be accomplished before pressure testing. True Install the fill pipe so that the top of the fill cap will be between ____ to ____ inches below the manhole lid. 4 to 6 inches True or False: Vent restrictive devices are not used on tanks with remote fill pipes and gauge openings. True The proper way to move a tank is by lifting it using the ______ ____ installed by the manufacturer. Lifting lugs True or False: Line leak detection should be installed when interstitial monitoring is used. True Piping slope must be a minimum of _____ inch per foot for the UST. 1/8 inch per foot Overfill protection at _____ % of tank capacity. 95% The minimum standards for UST installations are: (3) 1. PEI-RPI 100-2000 2. API 1615 3. NFPA 30 & 31 List 7 leak detection methods for tanks. 1. Automatic ... 2. Groundwater ... 3. Inventory ... 4. Manuel ... 5. Interstitial ... 6. Soil ... 7. Statistical ... Fill tubes must extend to within ____ inches of the tank bottom. 6 inches In the absence of any tank top sumps, normal backfill and paving on top of the tank will provide adequate restraint if the burial depth is at least _____ % of the tank. 60%