Kentucky UST Certification Test Prep
what is the maximum air pressure to which a steel tank should be subjected in a pre-
installation test? - CORRECT ANSWER-5 pounds
for fiberglass reinforced plastic (FRP) tanks up to 12 feet in diameter what is an
acceptable air pressure to which the tanks may be subjected in a pre-installation test? -
CORRECT ANSWER-3 pounds
for FRP tanks over 12 feet in diameter what is the maximum air pressure to which the
tanks should be subjected in a pre-installation test? - CORRECT ANSWER-3 pounds
when you are conducting an air test on a tank the type of gauge that should be used is?
- CORRECT ANSWER-a pressure gauge with a maximum limit of 10 to 15 PSIG
the proper procedure for conducting a pre-installation air test of a steel tank is to? -
CORRECT ANSWER-apply 3 to 5 pounds of pressure and soap all surfaces and weld
seams visible through the coating while inspecting for bubbles.
what is the proper procedure for conducting a pre-installation air test of an FRP tank
Under 12 feet in diameter is to.... - CORRECT ANSWER-apply 3 pounds of air pressure
and soap all surfaces while inspecting for any sign of a leak either audible or visible in
the form of bubbles on the surface
a double-walled steel tank build in accordance with UL standard 58 is? - CORRECT
ANSWER-requires air testing of the interstitial space prior to installation
when tanks arrive at the job site, how should they be unloaded? - CORRECT
ANSWER-lifted off with a cable attached to the tank lifting lugs
As an alternative lifting method, should a cable or chain be wrapped around the tank? -
CORRECT ANSWER-No, Never!
When you are lifting a tank, using the lifting lugs, which of these procedures should be
followed? - CORRECT ANSWER-attach a triangle cable through the lugs with no more
than a 30 degree angle from the center line.
After you unload a new tank on a clean level surface at the job site what else should
you do prior to inspection and pre-testing? - CORRECT ANSWER-Chock the tank to
prevent it from Rolling
which of the following items should be physically checked for damage or imperfections
at the job site? - CORRECT ANSWER-Piping (steel and fiberglass)
Fittings, Vents, Fillboxes, anodes, ECT..
,The tanks themselves
(ALL OF THE ABOVE)!
STI-P3 tanks are delivered with shipping plugs in tank openings. What should be done
to these plugs prior to testing? - CORRECT ANSWER-remove the plugs and replace
them with a standard threaded plug that is properly doped
should dielectric bushings be installed in all openings of an STI-P3 tank? - CORRECT
ANSWER-yes on all openings
the proper procedure for conducting a pre-installation air test of a double-walled tank is
to? - CORRECT ANSWER-pressurize the inner tank monitor the pressure for one hour
and then pressurize the space between the inner and outer tanks with the air from the
inner tank
when shipped a steel tank is covered with a coating that is an important part of the
tanks Corrosion Prevention system. "holidays" which show up in the coating at the
installation site should? - CORRECT ANSWER-should be touched up with a compatible
coating after proper surface preparation
touch up of holidays in a steel tank coatings at the installation site should be done....... -
CORRECT ANSWER-according to the manufacturer's instructions
dielectric bushings are usually made of what? - CORRECT ANSWER-non-metallic
material
factors to consider in determining the size shape and depth of a tank excavation include
what? - CORRECT ANSWER-*the tank manufacturers recommendations
*the requirements for compacting bedding and backfill as well as stability of the soil
*the depth of cover
AKA all of the above
in the absence of local requirements the recommended minimum distance between a
tank excavation and adjacent structures or property lines is how many feet? -
CORRECT ANSWER-5 feet
reinforcement of a steel underground tank may be required by the tank manufacturer if -
CORRECT ANSWER-the burial depth is greater than the tank diameter
according to FRP tank manufacturers specifications the burial depth for an FRP tank
should not exceed how many feet? - CORRECT ANSWER-7 feet
, when installing a cathodically protected steel tank you should - CORRECT ANSWER-
make sure the excavation is free from material that could cause damage to the coating
when installing dielectric bushings in a cathodically protected steel tank prior to placing
the tank in the excavation you should - CORRECT ANSWER-make sure that no electric
current can pass through the dielectric flanges or bushings
industry codes as well as the specifications of individual manufacturers do not entirely
agree as to the minimum space that should be maintained between tanks and stalled in
stable soil conditions. what ranges of minimum spacing between tanks derived from
various industry codes and manufacture specifications which range is most accurate. -
CORRECT ANSWER-from 12 inches to 24 inches
acceptable bedding material for steel tanks include.... - CORRECT ANSWER-clean
washed well granulated gravel sand or Rock between 1/8 inch and 1/2 inch in size
pea gravel with a minimum diameter of 1/8 inch and a maximum diameter of 3/4 inch
number 8 crushed stone
how should steel tanks should be lowered into the excavation - CORRECT ANSWER-
through the use of lifting lugs installed by the manufacture and use of lifting equipment
of sufficient capacity to lift and lower the tank
when installing a steel tank which has zinc anodes welded directly onto the tank for
cathodic protection you should - CORRECT ANSWER-remove the plastic wrapping
around the anodes prior to installation
if local authorities and tank manufacturers permit a sand slurry mixture to be used for
backfilling a tank what steps should be taken to ensure that use of the slurry is proper? -
CORRECT ANSWER-use only Personnel trained in the sand slurry method by the tank
manufacturer and use the method only with the manufacturer's prior approval
in making a tank excavation if you discover that the specific call for the burial depth of
the steel tank to be greater than the tank diameter what should you do? - CORRECT
ANSWER-consult the tank manufacturer to determine if reinforcements will be required
what is the minimum depth of bedding required for a pipe trench in traffic areas? -
CORRECT ANSWER-6 inches
measured from the finish grade what is the minimum burial depth for the piping system
of an underground tank and traffic areas? - CORRECT ANSWER-18 inches
when planning your trenches for the piping system how much slope toward the tank
should be allowed for each linear foot of piping? - CORRECT ANSWER-1/8 inch
what is the maximum air pressure to which a steel tank should be subjected in a pre-
installation test? - CORRECT ANSWER-5 pounds
for fiberglass reinforced plastic (FRP) tanks up to 12 feet in diameter what is an
acceptable air pressure to which the tanks may be subjected in a pre-installation test? -
CORRECT ANSWER-3 pounds
for FRP tanks over 12 feet in diameter what is the maximum air pressure to which the
tanks should be subjected in a pre-installation test? - CORRECT ANSWER-3 pounds
when you are conducting an air test on a tank the type of gauge that should be used is?
- CORRECT ANSWER-a pressure gauge with a maximum limit of 10 to 15 PSIG
the proper procedure for conducting a pre-installation air test of a steel tank is to? -
CORRECT ANSWER-apply 3 to 5 pounds of pressure and soap all surfaces and weld
seams visible through the coating while inspecting for bubbles.
what is the proper procedure for conducting a pre-installation air test of an FRP tank
Under 12 feet in diameter is to.... - CORRECT ANSWER-apply 3 pounds of air pressure
and soap all surfaces while inspecting for any sign of a leak either audible or visible in
the form of bubbles on the surface
a double-walled steel tank build in accordance with UL standard 58 is? - CORRECT
ANSWER-requires air testing of the interstitial space prior to installation
when tanks arrive at the job site, how should they be unloaded? - CORRECT
ANSWER-lifted off with a cable attached to the tank lifting lugs
As an alternative lifting method, should a cable or chain be wrapped around the tank? -
CORRECT ANSWER-No, Never!
When you are lifting a tank, using the lifting lugs, which of these procedures should be
followed? - CORRECT ANSWER-attach a triangle cable through the lugs with no more
than a 30 degree angle from the center line.
After you unload a new tank on a clean level surface at the job site what else should
you do prior to inspection and pre-testing? - CORRECT ANSWER-Chock the tank to
prevent it from Rolling
which of the following items should be physically checked for damage or imperfections
at the job site? - CORRECT ANSWER-Piping (steel and fiberglass)
Fittings, Vents, Fillboxes, anodes, ECT..
,The tanks themselves
(ALL OF THE ABOVE)!
STI-P3 tanks are delivered with shipping plugs in tank openings. What should be done
to these plugs prior to testing? - CORRECT ANSWER-remove the plugs and replace
them with a standard threaded plug that is properly doped
should dielectric bushings be installed in all openings of an STI-P3 tank? - CORRECT
ANSWER-yes on all openings
the proper procedure for conducting a pre-installation air test of a double-walled tank is
to? - CORRECT ANSWER-pressurize the inner tank monitor the pressure for one hour
and then pressurize the space between the inner and outer tanks with the air from the
inner tank
when shipped a steel tank is covered with a coating that is an important part of the
tanks Corrosion Prevention system. "holidays" which show up in the coating at the
installation site should? - CORRECT ANSWER-should be touched up with a compatible
coating after proper surface preparation
touch up of holidays in a steel tank coatings at the installation site should be done....... -
CORRECT ANSWER-according to the manufacturer's instructions
dielectric bushings are usually made of what? - CORRECT ANSWER-non-metallic
material
factors to consider in determining the size shape and depth of a tank excavation include
what? - CORRECT ANSWER-*the tank manufacturers recommendations
*the requirements for compacting bedding and backfill as well as stability of the soil
*the depth of cover
AKA all of the above
in the absence of local requirements the recommended minimum distance between a
tank excavation and adjacent structures or property lines is how many feet? -
CORRECT ANSWER-5 feet
reinforcement of a steel underground tank may be required by the tank manufacturer if -
CORRECT ANSWER-the burial depth is greater than the tank diameter
according to FRP tank manufacturers specifications the burial depth for an FRP tank
should not exceed how many feet? - CORRECT ANSWER-7 feet
, when installing a cathodically protected steel tank you should - CORRECT ANSWER-
make sure the excavation is free from material that could cause damage to the coating
when installing dielectric bushings in a cathodically protected steel tank prior to placing
the tank in the excavation you should - CORRECT ANSWER-make sure that no electric
current can pass through the dielectric flanges or bushings
industry codes as well as the specifications of individual manufacturers do not entirely
agree as to the minimum space that should be maintained between tanks and stalled in
stable soil conditions. what ranges of minimum spacing between tanks derived from
various industry codes and manufacture specifications which range is most accurate. -
CORRECT ANSWER-from 12 inches to 24 inches
acceptable bedding material for steel tanks include.... - CORRECT ANSWER-clean
washed well granulated gravel sand or Rock between 1/8 inch and 1/2 inch in size
pea gravel with a minimum diameter of 1/8 inch and a maximum diameter of 3/4 inch
number 8 crushed stone
how should steel tanks should be lowered into the excavation - CORRECT ANSWER-
through the use of lifting lugs installed by the manufacture and use of lifting equipment
of sufficient capacity to lift and lower the tank
when installing a steel tank which has zinc anodes welded directly onto the tank for
cathodic protection you should - CORRECT ANSWER-remove the plastic wrapping
around the anodes prior to installation
if local authorities and tank manufacturers permit a sand slurry mixture to be used for
backfilling a tank what steps should be taken to ensure that use of the slurry is proper? -
CORRECT ANSWER-use only Personnel trained in the sand slurry method by the tank
manufacturer and use the method only with the manufacturer's prior approval
in making a tank excavation if you discover that the specific call for the burial depth of
the steel tank to be greater than the tank diameter what should you do? - CORRECT
ANSWER-consult the tank manufacturer to determine if reinforcements will be required
what is the minimum depth of bedding required for a pipe trench in traffic areas? -
CORRECT ANSWER-6 inches
measured from the finish grade what is the minimum burial depth for the piping system
of an underground tank and traffic areas? - CORRECT ANSWER-18 inches
when planning your trenches for the piping system how much slope toward the tank
should be allowed for each linear foot of piping? - CORRECT ANSWER-1/8 inch
