AMMO 28 DL ELECTRICAL EXPLOSIVES
AMMO 28 DL ELECTRICAL EXPLOSIVES
SAFETY FOR ARMY FACILITIES AMMO
47 DL LIGHTNING PROTECTION FOR
AIR FORCE FACILITIES TEST BANK
Which statement regarding lightning protection is false? - lightning protection
system prevents lightning strikes from occurring.
How many down conductors are required for a mast LPS? - 2
Which material is preferred for ground conductors? - Copper
What does n represent in the Basic Bonding Formula? - Number of down
conductors
What does Km represent in the Basic Bonding Formula? - flashover medium
During an LPS inspection you notice a grounded metal pipe 3 feet from a
conductor. Should you write it up as a possible discrepancy? - Yes. Grounded metal
objects within 6 feet of a conductor should be considered for bonding
What does D represent in the Basic Bonding Formula? - Bonding distance
Which bonding condition applies to isolated metal objects surrounded by non-
conductive material (such as a metal door frame in a concrete wall)? - WRONG
Condition 2
AMMO 28 DL ELECTRICAL EXPLOSIVES
, AMMO 28 DL ELECTRICAL EXPLOSIVES
Calculate the BBF to determine if bonding is required for the scenario below. Use a
calculator, the BBF equation aid, and the bonding job aid as required.
• The metal vent is 15 feet high.
• There are 2 down conductors at the proper spacing.
• The vent is 12 inches (1 foot) from a conductor through air. - Bonding distance
for the metal roof vent is 1 foot 8 inches. Bonding is required.
LPS test results must be kept on file for - 6 inspection cycles
An LPS visual inspection is required every - 12 months
Conductive floors in explosives facilities must be tested every - WRONG 6 months
At a minimum, how many individual resistance tests must be performed on this
conductive floor? Refer to DA PAM 385-64, Section C-3 as required. - Ten tests:
five electrode-to-electrode and five electrode-to-ground tests
An LPS requires three-point fall-of-potential earth resistance testing every - Every
24 months
When conducting a 3-point fall-of-potential earth resistance test, what is the
maximum allowable resistance reading? - 25 ohms
When conducting a bonding resistance test, what is the maximum allowable
reading? - 1 ohm
AMMO 28 DL ELECTRICAL EXPLOSIVES
AMMO 28 DL ELECTRICAL EXPLOSIVES
SAFETY FOR ARMY FACILITIES AMMO
47 DL LIGHTNING PROTECTION FOR
AIR FORCE FACILITIES TEST BANK
Which statement regarding lightning protection is false? - lightning protection
system prevents lightning strikes from occurring.
How many down conductors are required for a mast LPS? - 2
Which material is preferred for ground conductors? - Copper
What does n represent in the Basic Bonding Formula? - Number of down
conductors
What does Km represent in the Basic Bonding Formula? - flashover medium
During an LPS inspection you notice a grounded metal pipe 3 feet from a
conductor. Should you write it up as a possible discrepancy? - Yes. Grounded metal
objects within 6 feet of a conductor should be considered for bonding
What does D represent in the Basic Bonding Formula? - Bonding distance
Which bonding condition applies to isolated metal objects surrounded by non-
conductive material (such as a metal door frame in a concrete wall)? - WRONG
Condition 2
AMMO 28 DL ELECTRICAL EXPLOSIVES
, AMMO 28 DL ELECTRICAL EXPLOSIVES
Calculate the BBF to determine if bonding is required for the scenario below. Use a
calculator, the BBF equation aid, and the bonding job aid as required.
• The metal vent is 15 feet high.
• There are 2 down conductors at the proper spacing.
• The vent is 12 inches (1 foot) from a conductor through air. - Bonding distance
for the metal roof vent is 1 foot 8 inches. Bonding is required.
LPS test results must be kept on file for - 6 inspection cycles
An LPS visual inspection is required every - 12 months
Conductive floors in explosives facilities must be tested every - WRONG 6 months
At a minimum, how many individual resistance tests must be performed on this
conductive floor? Refer to DA PAM 385-64, Section C-3 as required. - Ten tests:
five electrode-to-electrode and five electrode-to-ground tests
An LPS requires three-point fall-of-potential earth resistance testing every - Every
24 months
When conducting a 3-point fall-of-potential earth resistance test, what is the
maximum allowable resistance reading? - 25 ohms
When conducting a bonding resistance test, what is the maximum allowable
reading? - 1 ohm
AMMO 28 DL ELECTRICAL EXPLOSIVES
