U1 UST Installation Test| Question with 100%
Correct Answer
41. Carefully inspect _______________ and __________________ surfaces of a tank shipped
with a liquid-filled interstice for signs of leakage - ✔️✔️Interior, exterior
42. A double-walled tank shipped with a _____________ on the interstice need not be subjected
to an air/soap test. - ✔️✔️A. Ballard
B. Gauge
C. Skid
D. Vacuum
Answer D
43. To avoid undermining foundations of existing structures excavation must be done - ✔️✔️A.
Carefully
B. Tentatively
C. Quickly
D. Efficiently
Answer A
44. What is the determinant of the total depth of the tank excavation. - ✔️✔️A. Tank diameter,
bedding-thickness, hold-down pad(If required), depth of cover, and slope and length of piping.
B. Slope and length of piping, depth of cover, hold down pad(If required), thickness, amount of
dirt
C. Thickness, hold-down pad(If required), depth of cover, bedding, previous leaks or spills
D. Slope and length of piping, thickness, amount of dirt, depth of cover, bedding, thickness.
Answer A
45. Much of a buried tanks support is derived from __________ - ✔️✔️A. Compacted backfill
B. Chain-falls
C. Reinforced steal walls
D. Concrete
Answer A
46. _______ ____________ are geotextiles designed to prevent movement of back-fill materials,
while permitting water to pass through - ✔️✔️Filter fabrics
47. To provide a firm foundation for the tank, set the tank on a bed of ___________ material one
foot thick that extends one foot beyond the ends and sides of the tank. - ✔️✔️backfill
, 48. ___ feet of backfill must be placed between adjacent tanks and between tanks and excavation
walls. - ✔️✔️A. 1
B. 2
C. 3
D. 4
Answer B
49. In areas subject to vehicle traffic, cover may consist of at least _________ inches of
compacted backfill and ________ inches of asphaltic concrete, or___________ inches of
reinforced concrete - ✔️✔️30, 6, 18
50. Maximum burial depth, measured from the top of the tank, are established by tank
__________ and ________________ - ✔️✔️A. Manufacturers and the installers
B. Independent testing laboratories
C. Installers and independent testing labs
D. Installers and the tank owner
E. Manufacturers
F. Both B and E
Answer F
51. For fiberglass tanks ______ feet is the standard max depth for the tank - ✔️✔️7
52. ________ feet is the typical burial depth for steel tanks - ✔️✔️5
53. Excavated materials that cannot be immediately removed from the site should be safely
stockpiled at least _______ feet away from the edge of the tank excavation - ✔️✔️2
54. Common deficiencies that adversely affect the structural integrity and coating of tanks
include - ✔️✔️A. use of incorrect backfill material
B. Inadequate or improper placement or compaction of backfill materials
C. rocks of debris left in the excavation
D. Voids under the lower quadrant of the tank
E. Failure to prevent migration of backfill materials
F. All of the above
Answer F
55. If a product is used for ballast do not fill tank about _______ percent ? - ✔️✔️95
56. Water in a storage tank can promote internal _____________ and degrade fuel quality. -
✔️✔️Corrosion
57. Back fill material should be - ✔️✔️A. Stagnate
B. A-Morph-is
C. Egregious
D. Free flowing
Correct Answer
41. Carefully inspect _______________ and __________________ surfaces of a tank shipped
with a liquid-filled interstice for signs of leakage - ✔️✔️Interior, exterior
42. A double-walled tank shipped with a _____________ on the interstice need not be subjected
to an air/soap test. - ✔️✔️A. Ballard
B. Gauge
C. Skid
D. Vacuum
Answer D
43. To avoid undermining foundations of existing structures excavation must be done - ✔️✔️A.
Carefully
B. Tentatively
C. Quickly
D. Efficiently
Answer A
44. What is the determinant of the total depth of the tank excavation. - ✔️✔️A. Tank diameter,
bedding-thickness, hold-down pad(If required), depth of cover, and slope and length of piping.
B. Slope and length of piping, depth of cover, hold down pad(If required), thickness, amount of
dirt
C. Thickness, hold-down pad(If required), depth of cover, bedding, previous leaks or spills
D. Slope and length of piping, thickness, amount of dirt, depth of cover, bedding, thickness.
Answer A
45. Much of a buried tanks support is derived from __________ - ✔️✔️A. Compacted backfill
B. Chain-falls
C. Reinforced steal walls
D. Concrete
Answer A
46. _______ ____________ are geotextiles designed to prevent movement of back-fill materials,
while permitting water to pass through - ✔️✔️Filter fabrics
47. To provide a firm foundation for the tank, set the tank on a bed of ___________ material one
foot thick that extends one foot beyond the ends and sides of the tank. - ✔️✔️backfill
, 48. ___ feet of backfill must be placed between adjacent tanks and between tanks and excavation
walls. - ✔️✔️A. 1
B. 2
C. 3
D. 4
Answer B
49. In areas subject to vehicle traffic, cover may consist of at least _________ inches of
compacted backfill and ________ inches of asphaltic concrete, or___________ inches of
reinforced concrete - ✔️✔️30, 6, 18
50. Maximum burial depth, measured from the top of the tank, are established by tank
__________ and ________________ - ✔️✔️A. Manufacturers and the installers
B. Independent testing laboratories
C. Installers and independent testing labs
D. Installers and the tank owner
E. Manufacturers
F. Both B and E
Answer F
51. For fiberglass tanks ______ feet is the standard max depth for the tank - ✔️✔️7
52. ________ feet is the typical burial depth for steel tanks - ✔️✔️5
53. Excavated materials that cannot be immediately removed from the site should be safely
stockpiled at least _______ feet away from the edge of the tank excavation - ✔️✔️2
54. Common deficiencies that adversely affect the structural integrity and coating of tanks
include - ✔️✔️A. use of incorrect backfill material
B. Inadequate or improper placement or compaction of backfill materials
C. rocks of debris left in the excavation
D. Voids under the lower quadrant of the tank
E. Failure to prevent migration of backfill materials
F. All of the above
Answer F
55. If a product is used for ballast do not fill tank about _______ percent ? - ✔️✔️95
56. Water in a storage tank can promote internal _____________ and degrade fuel quality. -
✔️✔️Corrosion
57. Back fill material should be - ✔️✔️A. Stagnate
B. A-Morph-is
C. Egregious
D. Free flowing
