U1 TEST

The proper way to move a tank is by lifting it using the ______ ____ installed by the manufacturer.

Lifting lugs

To provide a firm foundation, a tank should be set on a bed of backfill material at least _____ foot thick.

One foot

Paving over tanks in traffic areas should extend at least _____ inches beyond the perimeter of the tank.

12 inches or 1 foot

True or False: Filter fabric will not mask early signs of cave-in during construction.

False: Filter fabric can mask signs of cave in.

The _____degree factor should be used to avoid undermining nearby structures.

45 degree

Pressure imposed on tanks should not exceed _____ psi.

5 psi

Pressurize the inner tank to a maximum pressure of ___ psi.

5 psi

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

True or False: Water may be added to a tank as ballast while installing.

True

True or False: When backfilling, and an 8" concrete pad is used, 18" of compacted backfill is acceptable.

True

True or False: You should pressurize the interstice with air from the inner tank.

True

After piping areas are backfilled, _______psi air pressure may be maintained in the piping, provided no product has been in the piping.

10 psi

Before working on any electrical circuit, be sure the circuit is __________.

de-energized

Compressors commonly used for testing can ________ the space in second, causing serious damage to the tank.

over pressurize

At least _____ feet of backfill is required between tanks and between the tank and excavation walls.

2 feet

______ feet is the typical burial depth for steel tanks.

5 feet

The minimum standards for UST installations are: (3)

1. PEI-RPI 100-2000 2. API 1615 3. NFPA 30 & 31

Coat tank anchoring hardware with _______ material.

Dielectric

If components are electrically continuous, the voltage readings will be nearly _______.

Identical

Observation wells are installed _____the excavation, while monitoring wells are installed _______the excavation.

Inside, Outside

T or F - Flexible connectors may be used for non-metallic or metallic piping.

True

________ are beams of reinforced concrete, placed alongside the tanks in the bottom of the excavation with cables or straps.

Deadmen

True or False: It is standard practice to lower galvanic anodes by the lead wire.

False

True or False: test single wall tanks at 50psi before installing in excavation.

False. 5 psi maximum

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: It is ok to use chains or cables around the shell of a tank, as long as they are connected to the lifting lugs.

False. Never place anything around the tank for lifting.

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: Air tests are inconclusive without soaping and careful inspection of bubbles.

True

True or False: Deflection in the tank's vertical diameter may be caused by improper bedding, voids and/or poor compaction.

True

True or False: Improper backfilling of an installed underground tank can distort tank dimensions.

True

True or False: Never place chains or cables around the shell of a tank.

True

True or False: Soap solution for pressure testing should be applied uniformly with a deadman brush.

False: Not a deadman brush; With a 'mop or spray'

List 3 types of overfill prevention devices.

1. Alarms 2. Flow Shut-off devices 3. Vent restriction devices

Piping slope must be a minimum of _____ inch per foot for the UST.

1/8 inch per foot

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

True or False: Isolation of piping from tanks and dispensers must be accomplished before pressure testing.

True

True or False: Line leak detection should be installed when interstitial monitoring is used.

True

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: Protected pipe must be electrically continuous, bond unconnected pipe within #12 TW or THHN stranded or solid wire.

True

True or False: To prevent accidental loss of protection, electrical power to the rectifier should NOT be controlled by switches that are under control of the operator.

True

True or False: Vent restrictive devices are not used on tanks with remote fill pipes and gauge openings.

True

True or False: Vent restrictive devices must NOT be installed on tanks with suction pumps and air eliminators.

True

True or False: Vent restrictive devices will not work on Stage I Vapor recovery systems, unless special fittings are used.

True

List 7 leak detection methods for tanks.

1. Automatic ... 2. Groundwater ... 3. Inventory ... 4. Manuel ... 5. Interstitial ... 6. Soil ... 7. Statistical ...

Five common deficiencies that adversely affect the structural integrity and coatings of the tanks include:

1. Incorrect backfill material 2. Inadequate or improper compaction 3. Rocks or debris left in the excavation 4. Voids under the tank 5. Failure to prevent migration of the backfill

Typical excavation consideration include. (5)

1. Stability of the soil 2. Bedding and backfill requirements 3. Space for components 4. manufacturer's recommendations 5. Safety

Each inch of reinforced concrete can be considered equal to _____ inches of compacted backfill.

1.5 inches

For an over-fill alarm to be effective it must: 1. 2. 3.

1. Provide visual and audible signals to delivery person 2. Be located close to the delivery person 3. Be labeled "Overfill Alarm"

Seperate electrical conduit and piping by at least _____ inches.

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%

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%

The maximum burial depth for Fiberglass tanks is _____ feet.

7 feet

It is recommended to use _____ inches of reinforced concrete on a tank pad.

8

Overfill alarms must be set at ______% of tank capacity.

90%

Overfill protection at _____ % of tank capacity.

95%

True or False: Backfill material may be poured directly from the dump truck onto the tank, provided the tank is dielectrically coated prior to backfilling.

False: Backfill should be placed carefully around and over the tank to prevent damage to the tank or coating.

True or False: Exposed metallic hardware should NOT be coated with dielectric material as corrosion could occur.

False: Coat all exposed material with dielectric material.

True or False: It is generally acceptable to air test tanks that contain or have contained product.

False: Do Not pressure test tanks that contain or have contained product.

True or False: The use of round bar or wire rope is generally accepted to strap a tank down to the pad, but varies from state to state.

False: Either Non-Metallic or Flat isolated steel straps are the only materials that should be used.

True or False: Vent restrictive devices are what is used on emergency generator tanks only.

False: Not used on emergency generator tanks.

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.

True or False: Isolating material may consist of roofing felt or expansion joint compound, as long as it conforms to the tank manufactures delivery specifications.

False: Roofing felt or expansion joint compound is never acceptable for use as isolation material.

True or False: Three good backfill materials are. Sand, Pea Gravel and Well graded Soil

False: Sand, Pea Gravel or Crushed Rock <3/4"

True or false: Anchor straps should be securely strapped to reinforcing rods embedded in the back fill material.

False: Should be securely embedded in concrete.

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: It is not necessary to inspect tanks or piping prior to installation, provided they are listed as NFP30A tanks and piping.

False: Tanks and piping must be physically inspected prior to installation.

True or False: A pumped delivery tank requires a vent restrictive over-fill alarm.

False: Vent restricted devices must Never be used on a pump delivered tank.

What must be used on all pressurized piping systems to detect leaks?

PLLD (Pressurized Line Leak Detector)

When testing galvanic anode cathodic protection systems, a negative voltage of at least _____ volts, relative to a copper-copper sulfate is usually sufficient.

0.85 volts

Pressure testing a tank should be monitored for how long?

1 hour

Five factors that aggravate excavations are:

1. Ground and surface water 2. Unstable soil 3. Backfill areas 4. Frost 5. Product and Vibrations

Ensure that all electrical equipment is installed in accordance with national, state and local codes including; 1. 2. 3. 4. 5.

1. National electrical Code NFPA70 2. Flammable and Combustablbe Liquid Code NFPA 30 3. Automotive and Marine Station Code NFPA30A 4. Uniform Fire Code 5. International Fire Code

List the 3 types of tank anchorage.

1. Slab at grade 2. Deadman anchors 3. Bottom hold-down pad

Slope of an excavation is determined by what 4 factors?

1. Soil Conditions 2. Depth 3. Shoring requirements 4. Safety

Secondary containment systems typically consist of: 1. Double walled _________ 2. Double walled _________ 3. Tank Top ____________ 4. Under Dispenser _____________ 5. __________ Devices

1. Tanks 2. Piping 3. Sumps 4. Sumps 5. Sensing

Since the best accuracy of gauges is at mid-range, and test pressures must not exceed 5 psi, a gauge with a maximum limit of ____ or ____ is recommended.

10 or 15 psi

Regarding Tightness Testing for Secondary Pipe Rigid secondary = ____psi Flexible secondary = _____psi Gutter systems = ________________

10 psi 5 psi manufacturers recommendations

Vent piping must be ______ feet above grade.

12 feet

Regarding tanks: In areas subject to vehicle traffic. At least ____ inches of backfill and _____ inches of asphalt must be used.

30 and 6

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

Test new piping at _____psi for a period of ____minutes, soaping all joints.

50 psi, 60 minutes (1 hour)

Fill tubes must extend to within ____ inches of the tank bottom.

6 inches

True or False: You should use 2 gauges to reduce the chance of over-pressurization of the tank due to gauge failure.

True

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.