Practice Test Geeks(CES) Certified Explosives Specialist Practice Test
← All CES Flashcard Decks

Fundamentals & Core Principles Flashcards

7 cards from real CES practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Fundamentals & Core Principles flashcards as text

  1. What does 'VoD' stand for in explosives testing, and why is it important?

    Answer: Velocity of Detonation — indicates explosive performance and completeness of reaction

    Velocity of Detonation (VoD) is the speed at which the detonation wave travels through an explosive, and it correlates directly with brisance and energy release rate.

  2. Which explosive compound is the main ingredient in detonating cord (PETN cord)?

    Answer: PETN

    Detonating cord contains a core of Pentaerythritol Tetranitrate (PETN), a primary-secondary high explosive with high VoD.

  3. What is the ATF Form 5400.4 used for in explosives operations?

    Answer: Reporting a theft or loss of explosives

    ATF Form 5400.4 is the Explosive Theft/Loss Report that licensees and permittees must file within 24 hours of discovering a theft or loss.

  4. In blast design, what is the 'burden' dimension?

    Answer: The distance from the borehole to the nearest free face perpendicular to the blast

    Burden is the distance from the charged borehole to the nearest free face, and it is one of the most critical parameters in blast design.

  5. What is the primary chemical reaction product concern when ANFO detonates with a negative oxygen balance?

    Answer: Production of toxic carbon monoxide and nitrogen oxides (NOx)

    Insufficient oxygen during ANFO detonation leads to incomplete combustion, producing toxic carbon monoxide (CO) and fumes of nitrogen oxides (NOx).

  6. Which of the following best defines 'brisance' as an explosive property?

    Answer: The shattering effect or ability to shear and crush material in close proximity to the charge

    Brisance refers to the shattering capability of an explosive, related to the peak pressure and rate of pressure rise in the detonation wave.

  7. What is the key difference between an electric blasting cap (EBC) and an electronic detonator (EDD)?

    Answer: EDDs contain an internal microchip allowing programmable delay timing and individual identification

    Electronic detonators (EDDs) contain a microprocessor that enables programmable millisecond-precision delays and individual detonator ID verification before firing.