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Summary of Federal Regulations for Underground Storage Tank Systems


Quiz Questions

1.An UST is a tank and any underground piping connected to the tank that has at least 10 percent of its combined volume underground.
True
False
2. Tanks of 2,000 gallons capacity or less may not be able to use manual tank gauging as a leak detection method, either by itself or in combination with tank tightness testing.
True
False
3.Manual tank gauging can be used as the sole method of leak detection for the life of the tank only for tanks up to 1,000 gallons.
True
False
4.Pressurized piping need not meet the following requirement :- The piping must have devices that automatically shut off or restrict flow or have an alarm that indicates a leak.
True
False
5.Below-grade piping operating at less than atmospheric pressure is sloped so that the piping’s contents will drain back into the storage tank if the suction is released.
True
False
6.Catchment basins are also called ______________________________________.
Spill containment manholes
Spill buckets
Both
None
7.Basically, a catchment basin is a bucket sealed around the fill pipe. To protect against spills, the basin should be large enough to contain what may spill when the delivery hose is uncoupled from the fill pipe.
Ture
False
8.Overfills usually release much lesser volumes than spills. When a tank is overfilled, large volumes cannot be released at the fill pipe and through loose fittings on the top of the tank or a loose vent pipe.
True
False
9.The __________________________installed in an UST’s fill pipe can slow down and then stop the delivery when the product has reached a certain level in the tank.
Non-automatic shutoff device
Automatic shutoff device
10.Overfill alarms do not work when they alert the driver at the right time and the driver responds quickly.
True
False
11.Ball float valves are placed at the top of the vent line several inches below the top of the UST.
True
False
12.Sacrificial anodes are pieces of metal more electrically active than the steel UST. Because these anodes are more active, the corrosive current will exit from them rather than the UST.
True
False
13.An impressed current system uses a ____________________to convert alternating current to direct current.
Rectifier
Inverter
14.Sacrificial anodes can be attached to the UST for corrosion protection.
True
False
15.If an UST never receives more than 25 gallons at a time, the UST does meets the overfill protection requirements.
True
False
16.Leak detection for piping is particularly important, because most leaks come from an UST’s piping.
True
False
17.Below-grade piping operating at more than atmospheric pressure is sloped so that the piping’s contents will drain back into the storage tank if the suction is released.
True
False
18.Some automatic shutoff devices work in two stages. The first stage drastically reduces the flow of product to alert the driver that the tank is nearly full. The driver can then close the delivery valve and still have room in the tank for the product left in the delivery hose.
True
False
19.A single-walled tank is the first or __________________________. Using this a leak can escape into the environment.
Primary containment
Secondary containment