US Army Explosive Safety
Familiarization Practice Exam
2025
SECTION 1: FOUNDATIONS & DEFINITIONS (Questions
1-10)
Q1 [AO1 - Knowledge]: The primary purpose of Army Explosives Safety
Standards is to:
A. Maximize efficiency in explosive operations.
B. Minimize the potential for accidents and protect personnel, equipment, and resources.
[CORRECT]
C. Simplify administrative paperwork.
D. Restrict training with live explosives.
Correct Answer: B
Rationale: Per DA PAM 385-64, Chapter 1, the Army's explosive safety program exists to
protect personnel, property, and the environment from the unique hazards of explosives. All
regulations, standards, and procedures flow from this foundational imperative. Efficiency (A)
is secondary to safety. Paperwork reduction (C) is not a safety objective. Training restriction
(D) is contrary to readiness goals—safety enables effective training, not prevents it.
Q2 [AO1 - Knowledge]: The Risk Management process applied to explosive
operations consists of which five steps?
A. Identify hazards, Assess hazards, Develop controls, Implement controls, Supervise and
evaluate [CORRECT]
B. Ignore risks, Continue operations, Hope for the best, Document after incident, Blame
equipment
,C. Identify hazards, Call supervisor, Wait for instructions, Continue slowly, Report completion
D. Assess only catastrophic risks, Develop minimal controls, Implement when convenient,
Evaluate annually
Correct Answer: A
Rationale: Per AR 385-10 and DA PAM 385-64, the five-step Risk Management process is: (1)
Identify hazards, (2) Assess hazards to determine risk, (3) Develop controls and make risk
decisions, (4) Implement controls, (5) Supervise and evaluate. This systematic approach is
mandatory for all explosive operations. Distractors B, C, and D represent dangerous
deviations that have historically preceded accidents.
Q3 [AO1 - Knowledge]: Explosive Hazard Division (HD) 1.3 is defined as
munitions that present a:
A. Mass explosion hazard
B. Fragmentation hazard
C. Mass fire hazard with minor blast or fragment [CORRECT]
D. Insensitive munitions hazard
Correct Answer: C
Rationale: Per DoD 6055.9-STD and DA PAM 385-64, HD 1.3 articles have a fire hazard with
either a minor blast hazard or a minor projection hazard, but not a mass explosion hazard.
Examples include propellant charges and rocket motors. HD 1.1 (A) is mass explosion. HD
1.2 (B) is fragmentation. HD 1.6 (D) is extremely insensitive.
Q4 [AO1 - Knowledge]: The term "Quantity-Distance" (Q-D) in explosive safety
refers to:
A. The distance ammunition must travel during transportation
B. The separation distance required between explosive locations and exposed sites based on
net explosive weight [CORRECT]
C. The maximum amount of explosives allowed in a single facility
D. The distance between guard towers
, Correct Answer: B
Rationale: Per DA PAM 385-64, Chapter 5, Q-D is the foundation of explosive siting. It
prescribes minimum separation distances between explosive locations (PES - Potential
Explosion Sites) and exposed sites (ES) based on the Net Explosive Weight (NEW) for
quantity and the hazard division for distance. This protects personnel and facilities from
blast, fragmentation, and thermal effects.
Q5 [AO1 - Knowledge]: Hazard Division (HD) 1.1 is defined as munitions that
pose a:
A. Fire hazard.
B. Mass explosion hazard. [CORRECT]
C. Fragmentation hazard.
D. Ignition hazard.
Correct Answer: B
Rationale: Per DoD 6055.9-STD and DA PAM 385-64, HD 1.1 substances and articles have a
mass explosion hazard (an explosion which affects almost the entire load instantaneously).
This is the most severe hazard division, requiring the greatest separation distances and most
stringent controls. Examples include bulk high explosives and certain bulk-loaded munitions.
Q6 [AO2 - Application]: The Minimum Safe Distance (MSD) for personnel during
explosive operations is determined by:
A. The unit commander's preference
B. The blast radius calculated for the specific operation and NEW involved [CORRECT]
C. A standard 100-foot distance for all operations
D. The distance to the nearest building
Correct Answer: B
Rationale: Per DA PAM 385-64, Chapter 4, MSD is calculated based on the specific explosive
hazard, Net Explosive Weight (NEW), and operation type. It is not arbitrary (A) or uniform (C).
The MSD provides protection from blast overpressure, fragmentation, and thermal effects
specific to the operation being conducted.
Familiarization Practice Exam
2025
SECTION 1: FOUNDATIONS & DEFINITIONS (Questions
1-10)
Q1 [AO1 - Knowledge]: The primary purpose of Army Explosives Safety
Standards is to:
A. Maximize efficiency in explosive operations.
B. Minimize the potential for accidents and protect personnel, equipment, and resources.
[CORRECT]
C. Simplify administrative paperwork.
D. Restrict training with live explosives.
Correct Answer: B
Rationale: Per DA PAM 385-64, Chapter 1, the Army's explosive safety program exists to
protect personnel, property, and the environment from the unique hazards of explosives. All
regulations, standards, and procedures flow from this foundational imperative. Efficiency (A)
is secondary to safety. Paperwork reduction (C) is not a safety objective. Training restriction
(D) is contrary to readiness goals—safety enables effective training, not prevents it.
Q2 [AO1 - Knowledge]: The Risk Management process applied to explosive
operations consists of which five steps?
A. Identify hazards, Assess hazards, Develop controls, Implement controls, Supervise and
evaluate [CORRECT]
B. Ignore risks, Continue operations, Hope for the best, Document after incident, Blame
equipment
,C. Identify hazards, Call supervisor, Wait for instructions, Continue slowly, Report completion
D. Assess only catastrophic risks, Develop minimal controls, Implement when convenient,
Evaluate annually
Correct Answer: A
Rationale: Per AR 385-10 and DA PAM 385-64, the five-step Risk Management process is: (1)
Identify hazards, (2) Assess hazards to determine risk, (3) Develop controls and make risk
decisions, (4) Implement controls, (5) Supervise and evaluate. This systematic approach is
mandatory for all explosive operations. Distractors B, C, and D represent dangerous
deviations that have historically preceded accidents.
Q3 [AO1 - Knowledge]: Explosive Hazard Division (HD) 1.3 is defined as
munitions that present a:
A. Mass explosion hazard
B. Fragmentation hazard
C. Mass fire hazard with minor blast or fragment [CORRECT]
D. Insensitive munitions hazard
Correct Answer: C
Rationale: Per DoD 6055.9-STD and DA PAM 385-64, HD 1.3 articles have a fire hazard with
either a minor blast hazard or a minor projection hazard, but not a mass explosion hazard.
Examples include propellant charges and rocket motors. HD 1.1 (A) is mass explosion. HD
1.2 (B) is fragmentation. HD 1.6 (D) is extremely insensitive.
Q4 [AO1 - Knowledge]: The term "Quantity-Distance" (Q-D) in explosive safety
refers to:
A. The distance ammunition must travel during transportation
B. The separation distance required between explosive locations and exposed sites based on
net explosive weight [CORRECT]
C. The maximum amount of explosives allowed in a single facility
D. The distance between guard towers
, Correct Answer: B
Rationale: Per DA PAM 385-64, Chapter 5, Q-D is the foundation of explosive siting. It
prescribes minimum separation distances between explosive locations (PES - Potential
Explosion Sites) and exposed sites (ES) based on the Net Explosive Weight (NEW) for
quantity and the hazard division for distance. This protects personnel and facilities from
blast, fragmentation, and thermal effects.
Q5 [AO1 - Knowledge]: Hazard Division (HD) 1.1 is defined as munitions that
pose a:
A. Fire hazard.
B. Mass explosion hazard. [CORRECT]
C. Fragmentation hazard.
D. Ignition hazard.
Correct Answer: B
Rationale: Per DoD 6055.9-STD and DA PAM 385-64, HD 1.1 substances and articles have a
mass explosion hazard (an explosion which affects almost the entire load instantaneously).
This is the most severe hazard division, requiring the greatest separation distances and most
stringent controls. Examples include bulk high explosives and certain bulk-loaded munitions.
Q6 [AO2 - Application]: The Minimum Safe Distance (MSD) for personnel during
explosive operations is determined by:
A. The unit commander's preference
B. The blast radius calculated for the specific operation and NEW involved [CORRECT]
C. A standard 100-foot distance for all operations
D. The distance to the nearest building
Correct Answer: B
Rationale: Per DA PAM 385-64, Chapter 4, MSD is calculated based on the specific explosive
hazard, Net Explosive Weight (NEW), and operation type. It is not arbitrary (A) or uniform (C).
The MSD provides protection from blast overpressure, fragmentation, and thermal effects
specific to the operation being conducted.
