US ARMY EXPLOSIVES SAFETY STUDY GUIDE 2025
QUESTIONS WITH ANSWERS GUARANTEE A+
✔✔When conducting a 3-point fall-of-potential earth resistance test on an integral LPS,
how far from the ground rod should you place the C2 and P2 test probes? Refer to DA
PAM 385-64, Table B-1 as required.
Select one response for the C2 probe distance and one response for the P2 probe
distance. - ✔✔C2 probe at 131 feet
P2 probe at 82 feet
✔✔What is the maximum allowable resistance reading for a 3-point fall-of-potential
earth resistance test? - ✔✔25 ohms or less
✔✔How often is a bonding resistance test required on an LPS? - ✔✔Every 24 months
✔✔What is the maximum allowable reading for a bonding resistance test on an LPS
conductor? - ✔✔1 ohm or less
✔✔When conducting a bonding resistance test on an integral LPS with 10 air terminals
and two down conductors, how many individual resistance tests are required, at a
minimum? - ✔✔20
✔✔While conducting a bonding resistance test on the integral LPS below, you placed
test leads on ground rod S and air terminal N. Which three bonds listed below are NOT
being tested? - ✔✔B
H
P
✔✔What information should be in a destructive weather plan? Select all that apply. -
✔✔Which operations to shut down
Who is responsible for shutting down each operation
Steps for shutting down each operation
Instructions for evacuating personnel
Instructions for restarting each operation
✔✔Spheric - ✔✔Detects lightning strike
Alerts when lightning is nearby
, ✔✔Pre-strike - ✔✔Measure the strength of atmospheric electric fields
Alerts when lightning strikes are imminent
✔✔What is the primary danger in a hazardous classified location? - ✔✔Explosive
atmosphere
✔✔Which division describes a hazardous classified location with greatest probability of
ignition or explosion? - ✔✔Division 1
✔✔Which two agencies tests and certify explosion-proof electrical equipment? -
✔✔Army Ordnance Safety and Security Activity (AOSSA)
Factory Mutual (FM)
Underwriter's Laboratory (UL)
✔✔Which device does NOT emit electromagnetic radiation? - ✔✔Calculator
✔✔Which three are hazards posed by electromagnetic radiation? - ✔✔Generation of
extreme heat in the human body
ignition of fuel and other combustibles
Activation or disabling of electrically initiated devices (EIDs)
✔✔Which two precautions should you take when approaching EMR-vunerable
ordnance with a hand-held radio? - ✔✔Enclose the ordnance completely in a sealed,
all-metal container
Turn off the radio when within 10 feet of ordnance
✔✔While conducting an LPS inspection, you discover the scenario illustrated in the
image below. Do you write it up as a discrepancy? Why or why not? - ✔✔Yes, because
the air terminal is not attached to a conductor.
✔✔How many down conductors are required for a building with a perimeter length of
425 feet? - ✔✔5
✔✔Which material is preferred for ground conductors? - ✔✔copper
✔✔What does h represent in the Basic Bonding Formula? - ✔✔Height of the proposed
bond
QUESTIONS WITH ANSWERS GUARANTEE A+
✔✔When conducting a 3-point fall-of-potential earth resistance test on an integral LPS,
how far from the ground rod should you place the C2 and P2 test probes? Refer to DA
PAM 385-64, Table B-1 as required.
Select one response for the C2 probe distance and one response for the P2 probe
distance. - ✔✔C2 probe at 131 feet
P2 probe at 82 feet
✔✔What is the maximum allowable resistance reading for a 3-point fall-of-potential
earth resistance test? - ✔✔25 ohms or less
✔✔How often is a bonding resistance test required on an LPS? - ✔✔Every 24 months
✔✔What is the maximum allowable reading for a bonding resistance test on an LPS
conductor? - ✔✔1 ohm or less
✔✔When conducting a bonding resistance test on an integral LPS with 10 air terminals
and two down conductors, how many individual resistance tests are required, at a
minimum? - ✔✔20
✔✔While conducting a bonding resistance test on the integral LPS below, you placed
test leads on ground rod S and air terminal N. Which three bonds listed below are NOT
being tested? - ✔✔B
H
P
✔✔What information should be in a destructive weather plan? Select all that apply. -
✔✔Which operations to shut down
Who is responsible for shutting down each operation
Steps for shutting down each operation
Instructions for evacuating personnel
Instructions for restarting each operation
✔✔Spheric - ✔✔Detects lightning strike
Alerts when lightning is nearby
, ✔✔Pre-strike - ✔✔Measure the strength of atmospheric electric fields
Alerts when lightning strikes are imminent
✔✔What is the primary danger in a hazardous classified location? - ✔✔Explosive
atmosphere
✔✔Which division describes a hazardous classified location with greatest probability of
ignition or explosion? - ✔✔Division 1
✔✔Which two agencies tests and certify explosion-proof electrical equipment? -
✔✔Army Ordnance Safety and Security Activity (AOSSA)
Factory Mutual (FM)
Underwriter's Laboratory (UL)
✔✔Which device does NOT emit electromagnetic radiation? - ✔✔Calculator
✔✔Which three are hazards posed by electromagnetic radiation? - ✔✔Generation of
extreme heat in the human body
ignition of fuel and other combustibles
Activation or disabling of electrically initiated devices (EIDs)
✔✔Which two precautions should you take when approaching EMR-vunerable
ordnance with a hand-held radio? - ✔✔Enclose the ordnance completely in a sealed,
all-metal container
Turn off the radio when within 10 feet of ordnance
✔✔While conducting an LPS inspection, you discover the scenario illustrated in the
image below. Do you write it up as a discrepancy? Why or why not? - ✔✔Yes, because
the air terminal is not attached to a conductor.
✔✔How many down conductors are required for a building with a perimeter length of
425 feet? - ✔✔5
✔✔Which material is preferred for ground conductors? - ✔✔copper
✔✔What does h represent in the Basic Bonding Formula? - ✔✔Height of the proposed
bond
