UST Tank Installation & Closure Procedures 2

Question 1

What is the primary purpose of a spill bucket (spill containment manhole) installed at the fill port of a UST?

Accepted Answer

To contain product spilled during tank filling operations

Answer

To prevent surface water from entering the tank during rain

Answer

To house the overfill prevention valve

Answer

To provide access for annual tank inspection

Question 2

An overfill prevention device set to trigger at 90% tank capacity performs which action?

Accepted Answer

Closes a valve to restrict or stop product flow into the tank

Answer

Automatically seals the fill port shut

Answer

Activates a high-level alarm to alert the delivery driver

Answer

Shuts down all dispensers connected to that tank

Question 3

During UST installation, what minimum slope is generally required for gravity-return (suction) piping back toward the tank?

Accepted Answer

1/4 inch per foot

Answer

1/8 inch per foot

Answer

1 inch per foot

Answer

No slope is required for suction lines

Question 4

What must be installed on all vent pipes of a UST system to prevent vapor ignition?

Accepted Answer

Flame arrestors

Answer

Pressure/vacuum relief valves

Answer

Check valves

Answer

Ball valves

Question 5

When installing double-walled piping, the interstitial space between the inner and outer pipe serves what purpose?

Accepted Answer

Allows detection of leaks from the inner pipe before product reaches the environment

Answer

Provides insulation to keep fuel at a constant temperature

Answer

Reduces friction loss and improves flow rate

Answer

Allows cathodic protection current to circulate uniformly

Question 6

What certification is required on UST equipment (tanks, piping, fittings) to demonstrate compliance with industry standards?

Accepted Answer

UL listing or equivalent third-party certification

Answer

EPA direct approval stamp

Answer

State fire marshal seal

Answer

OSHA 1910 certification mark

Question 7

After completing a UST installation, within how many days must the owner/operator submit a notification to the implementing agency confirming installation is complete?

Accepted Answer

30 days

Answer

7 days

Answer

60 days

Answer

90 days