CES Regulations & Compliance 3 — Questions and Answers
Question 1: Which of the following persons is PROHIBITED from possessing explosive materials under 18 U.S.C. § 842(i)?
- A licensed contractor with a felony conviction (Correct answer)
- A licensed miner with a DUI conviction
- A licensed blaster with a misdemeanor traffic violation
- A licensed user with an expired permit
Correct answer: A licensed contractor with a felony conviction
Federal law prohibits any person convicted of a felony punishable by imprisonment for more than one year from possessing explosive materials.
Question 2: What does the term 'Quantity-Distance' (Q-D) refer to in explosives regulations?
- The weight-to-volume ratio of an explosive
- The minimum distances required between explosive storage and inhabited buildings (Correct answer)
- The ratio of detonator quantity to explosive quantity
- The distance a blast wave travels per pound of explosive
Correct answer: The minimum distances required between explosive storage and inhabited buildings
Quantity-Distance (Q-D) tables establish minimum separation distances between explosive storage magazines and inhabited structures to reduce blast hazard risk.
Question 3: Under 27 CFR Part 555, which type of magazine is approved for the permanent storage of high explosives above ground?
- Type 1 (Correct answer)
- Type 2
- Type 3
- Type 5
Correct answer: Type 1
Type 1 magazines are permanent structures designed and approved for above-ground storage of high explosives under ATF regulations.
Question 4: IME Safety Library Publication 20 primarily addresses which aspect of explosives use?
- Underwater blasting procedures
- Surface blasting operations safety (Correct answer)
- Transportation placarding requirements
- BATFE licensing procedures
Correct answer: Surface blasting operations safety
IME Publication 20 provides safety guidance for surface blasting operations, covering pre-blast, blast, and post-blast procedures.
Question 5: Under MSHA regulations, who must be present during all blasting operations in underground mines?
- A mine foreman
- A certified blaster (Correct answer)
- An ATF-licensed user
- A MSHA inspector
Correct answer: A certified blaster
MSHA regulations require that all underground mine blasting be conducted by or under the direct supervision of a certified blaster.
Question 6: What minimum security measure is required for all explosive storage magazines under 27 CFR 555?
- 24-hour guard service
- Electronic alarm system
- Steel construction with hardened locks (Correct answer)
- Concrete blast walls
Correct answer: Steel construction with hardened locks
ATF regulations require that all storage magazines be constructed of steel or wood with steel lining and secured with hardened steel padlocks.
Question 7: Which UN number is assigned to blasting agents not otherwise specified?
- UN 0081
- UN 1942 (Correct answer)
- UN 0331
- UN 0065
Correct answer: UN 1942
UN 1942 is assigned to Ammonium Nitrate, which is the primary component of most blasting agents and is classified as a Division 5.1 oxidizer in transport.
CES Regulations & Compliance 3
Which of the following persons is PROHIBITED from possessing explosive materials under 18 U.S.C. § 842(i)?