Ammo-28-DL: Electrical Explosives Safety for Army Facilities, Ammo-47-DL: Lightning Protection for Air Force Facilities Q's & A's
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Ammo-28-DL: Electrical Explosives Safety for Army
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Ammo-28-DL: Electrical Explosives Safety For Army
Ammo-28-DL: Electrical Explosives Safety for Army Facilities, Ammo-47-DL: Lightning Protection for Air Force Facilities
Which statement regarding lightning protection is false? - Answer- lightning protection system prevents lightning strikes from occurring.
How many down conductors are requir...
what does n represent in the basic bonding formula
what does km represent in the basic bonding formul
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Ammo-28-DL: Electrical Explosives Safety for Army
Ammo-28-DL: Electrical Explosives Safety for Army
Ammo-28-DL: Electrical Explosives Safety for Army
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Ammo-28-DL: Electrical Explosives
Safety for Army Facilities, Ammo-47-
DL: Lightning Protection for Air Force
Facilities
Which statement regarding lightning protection is false? - Answer- lightning
protection system prevents lightning strikes from occurring.
How many down conductors are required for a mast LPS? - Answer- 2
Which material is preferred for ground conductors? - Answer- Copper
What does n represent in the Basic Bonding Formula? - Answer- Number of down
conductors
What does Km represent in the Basic Bonding Formula? - Answer- 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? - Answer- Yes. Grounded metal
objects within 6 feet of a conductor should be considered for bonding
What does D represent in the Basic Bonding Formula? - Answer- 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)? - Answer-
WRONG Condition 2
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. - Answer- Bonding
distance for the metal roof vent is 1 foot 8 inches. Bonding is required.
LPS test results must be kept on file for - Answer- 6 inspection cycles
An LPS visual inspection is required every - Answer- 12 months
Conductive floors in explosives facilities must be tested every - Answer- 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. - Answer- Ten
tests: five electrode-to-electrode and five electrode-to-ground tests
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