Page | 1
WV UNDERGROUND INSTALL AND
REPAIR QUESTIONS WITH DETAILED
VERIFIED ANSWERS
What is the proper way to move a tank? Ans: Lifting Lugs
When two lifting lugs are used, the angle between the lifting cable and
vertical should be no more than_____? Ans: 30 degrees
Before any attempt to move tanks is made, establish that ________ has
sufficient capacity and reach to life and lower the tanks? Ans: Hoisting
When performing pre-installing tank testing what should be performed?
Ans: Soap Test
When performing a pre-installation air test what should be done to
prevent over-pressurization? Ans: Use two gauges, use a pressure relief
device
What is the maxium test pressure for tanks less than 12 ft. diameter?
Ans: 5 psi
What is the space between the inner and outer tank wall called? Ans:
Interstice
A double wall tank is delivered to the site with a vacuum on the
interstice. The vacuum gauge indicates a level below the minimum level
set by the manufacturer Who should be contacted? Ans: Tank
Manufacturer
Which of the following factors aggravate excavation problems? Ans:
ground water and surface water, unstable soil, adjacent back filled areas,
frost, presence of released product, and vibration.
Which of the following factors should be considered when determining the
slope to be used for the excavation walls? Ans: soil conditions, depth of
the excavation, shoring requirements, safety considerations
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PEI/ RP100 recommends that tanks be set on back fill material at least --
---- thick? Ans: 1 foot
PEI/PR100 recommends that at least how much backfill material should
be between the tanks? Ans: 2 feet
PEI/RP 100 recommends that at least how much backfill material should
be between the tanks and the excavation walls? Ans: 2 feet
Under what conditions are placing a tank directly on a hold-down pad
permitted? Ans: No conditions
Paving over tanks in traffic areas should extend how far beyond the
perimeter of the tank excavation? Ans: 1 foot
PEI/RP100 recommends in areas where fully loaded product transport
vehicles are likely to pass over the tank area. that the reinforced concrete
over the tank be at least much thick? Ans: 8 inches
According to the PEI/RP 100-11 how is the maximum burial depth of a
tank measured? Ans: from the top of the tank
According to PEI/Rp100-11 what is the standard maximum burial depth
for fiberglass tank? Ans: 7 feet
According to PEI/RP100-11 what is the maximum burial depth for steel
tanks? Ans: 5 feet
How far from the edge of the tank excavation should excavated material
that cannot be immediately removed be stockpiled? Ans: 2 feet
What are common deficiencies that adversely affect the structural
integrity and coatings of tanks? Ans: incorrect backfill, improper
placement, rocks or debris, voids under the lower quadrant of tank failure
to prevent migration of backfill materials.
What does PEI/Rp100-11 state are the "standard" backfill materials for
fiberglass tanks? Ans: pea gravel and crushed rock
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When installing fiberglass tanks, the bottom of the excavation should be
covered by a minimum of ______ of suitable graded and compacted back
fill materials? Ans: 1 foot
According to the PEI/RP100-11 when sand is used as a backfill, what is
the recommended compaction specification? Ans: lifts, compact each
one
Why is measuring the deflection of fiberglass tanks important Ans:
Amanda is hot (you didn't answer this one) ;)
What is the purpose of filter fabric in a tank excavation? Ans: designed
to let water pass through without letting backfill materials to move
For the purposes of calculating tank burial depth, 1 inch of reinforced
concrete over the tank is equivalent to how many inches of compacted
back fill? Ans: 1.5
Where must "deadman" anchors be placed to be effective? Ans: Outside
diameter of the tank
What are the minimum dimenstions for a bottom hold down anchorage
pad? Ans: 8 inch concrete extended 18 inches beyond tank, and 1 foot
beyond each end
When installing a bottom hold down pad what factors must be calculated
for each installation? Ans: thickness of the pad, aount of concrete
reinforcement, and the number and size of anchor points
When should vent restriction devices, often referred to as "ball and float
valves" NOT be installed on a UST system? Ans: Amanda is the best
future wife for me (you didn't answer this one)
What components should a monitoring well contain? Ans: Jerome has a
booty (didn't answer this one)
When sensors are used for elak detection in disenser sumps, where
should the sensors be installed? Ans: Bottom of the sump
WV UNDERGROUND INSTALL AND
REPAIR QUESTIONS WITH DETAILED
VERIFIED ANSWERS
What is the proper way to move a tank? Ans: Lifting Lugs
When two lifting lugs are used, the angle between the lifting cable and
vertical should be no more than_____? Ans: 30 degrees
Before any attempt to move tanks is made, establish that ________ has
sufficient capacity and reach to life and lower the tanks? Ans: Hoisting
When performing pre-installing tank testing what should be performed?
Ans: Soap Test
When performing a pre-installation air test what should be done to
prevent over-pressurization? Ans: Use two gauges, use a pressure relief
device
What is the maxium test pressure for tanks less than 12 ft. diameter?
Ans: 5 psi
What is the space between the inner and outer tank wall called? Ans:
Interstice
A double wall tank is delivered to the site with a vacuum on the
interstice. The vacuum gauge indicates a level below the minimum level
set by the manufacturer Who should be contacted? Ans: Tank
Manufacturer
Which of the following factors aggravate excavation problems? Ans:
ground water and surface water, unstable soil, adjacent back filled areas,
frost, presence of released product, and vibration.
Which of the following factors should be considered when determining the
slope to be used for the excavation walls? Ans: soil conditions, depth of
the excavation, shoring requirements, safety considerations
, Page | 2
PEI/ RP100 recommends that tanks be set on back fill material at least --
---- thick? Ans: 1 foot
PEI/PR100 recommends that at least how much backfill material should
be between the tanks? Ans: 2 feet
PEI/RP 100 recommends that at least how much backfill material should
be between the tanks and the excavation walls? Ans: 2 feet
Under what conditions are placing a tank directly on a hold-down pad
permitted? Ans: No conditions
Paving over tanks in traffic areas should extend how far beyond the
perimeter of the tank excavation? Ans: 1 foot
PEI/RP100 recommends in areas where fully loaded product transport
vehicles are likely to pass over the tank area. that the reinforced concrete
over the tank be at least much thick? Ans: 8 inches
According to the PEI/RP 100-11 how is the maximum burial depth of a
tank measured? Ans: from the top of the tank
According to PEI/Rp100-11 what is the standard maximum burial depth
for fiberglass tank? Ans: 7 feet
According to PEI/RP100-11 what is the maximum burial depth for steel
tanks? Ans: 5 feet
How far from the edge of the tank excavation should excavated material
that cannot be immediately removed be stockpiled? Ans: 2 feet
What are common deficiencies that adversely affect the structural
integrity and coatings of tanks? Ans: incorrect backfill, improper
placement, rocks or debris, voids under the lower quadrant of tank failure
to prevent migration of backfill materials.
What does PEI/Rp100-11 state are the "standard" backfill materials for
fiberglass tanks? Ans: pea gravel and crushed rock
, Page | 3
When installing fiberglass tanks, the bottom of the excavation should be
covered by a minimum of ______ of suitable graded and compacted back
fill materials? Ans: 1 foot
According to the PEI/RP100-11 when sand is used as a backfill, what is
the recommended compaction specification? Ans: lifts, compact each
one
Why is measuring the deflection of fiberglass tanks important Ans:
Amanda is hot (you didn't answer this one) ;)
What is the purpose of filter fabric in a tank excavation? Ans: designed
to let water pass through without letting backfill materials to move
For the purposes of calculating tank burial depth, 1 inch of reinforced
concrete over the tank is equivalent to how many inches of compacted
back fill? Ans: 1.5
Where must "deadman" anchors be placed to be effective? Ans: Outside
diameter of the tank
What are the minimum dimenstions for a bottom hold down anchorage
pad? Ans: 8 inch concrete extended 18 inches beyond tank, and 1 foot
beyond each end
When installing a bottom hold down pad what factors must be calculated
for each installation? Ans: thickness of the pad, aount of concrete
reinforcement, and the number and size of anchor points
When should vent restriction devices, often referred to as "ball and float
valves" NOT be installed on a UST system? Ans: Amanda is the best
future wife for me (you didn't answer this one)
What components should a monitoring well contain? Ans: Jerome has a
booty (didn't answer this one)
When sensors are used for elak detection in disenser sumps, where
should the sensors be installed? Ans: Bottom of the sump
