CES Cheat Sheet 2026

The 30 highest-yield CES facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. How soon after a service or session should documentation be completed? → As soon as possible, ideally within 24 hours
2. Why is grounding important when handling explosives? → It prevents static discharge that could trigger an explosion
3. What should a practitioner do when regulations conflict with employer policies? → Follow the regulation, as legal requirements supersede employer policies
4. What should be done if an error is discovered in existing records? → Draw a single line through the error, note the correction, date, and initial
5. Which federal agency oversees the regulation of explosives in the U.S.? → ATF
6. How often must explosive storage magazines be inspected? → At least monthly as per regulations
7. What is the primary component of TNT? → Trinitrotoluene
8. What should a practitioner do when regulations conflict with employer policies? → Follow the regulation, as legal requirements supersede employer policies
9. Which instrument is used on a blast site to measure ground vibration levels at nearby structures? → Seismograph (seismometer)
10. What is the significance of professional networking in the Certified Explosives Specialist field? → It facilitates knowledge exchange, referrals, and collaborative problem-solving
11. How should Certified Explosives Specialist professionals approach quality improvement? → Through systematic evaluation of outcomes and implementation of evidence-based changes
12. What is the consequence of practicing outside the defined scope of practice? → Potential license revocation, legal liability, and risk to public safety
13. What is a key hazard when mixing explosive materials? → Unintended chemical reactions or detonation
14. Which factor does NOT affect blast damage severity? → Color of the explosive
15. Why is staying current with industry developments important for Certified Explosives Specialist professionals? → To provide the best possible service using current knowledge and practices
16. Which ISEE (International Society of Explosives Engineers) document provides widely referenced blast vibration and airblast criteria for residential structures? → ISEE Blasters' Handbook — the blasting seismograph and vibration limits chapter
17. What is the term for damage caused by flying fragments in a blast? → Fragmentation
18. Under ATF regulations (27 CFR 555.121), for how long must a licensed explosives dealer retain records of all explosive transactions? → 5 years
19. What is the recommended minimum stemming length above explosive column in a blast hole? → Equal to or greater than the burden distance
20. In underground blasting, what is the function of a 'cut' in a round? → To provide a free face and void space so subsequent holes can break rock effectively
21. What should be done if explosives are lost or stolen? → Immediately report the incident to ATF
22. What is the purpose of environmental scanning in strategic planning? → To identify external factors that may impact organizational success
23. Which explosive is known for its use in military demolition and is water-resistant? → C-4
24. What is the first step in the risk management process? → Identify potential risks through systematic analysis
25. Why is continuing education important for maintaining ethical practice? → It ensures practitioners stay current with evolving standards and best practices
26. In a 'deck loading' blast hole configuration, what separates the explosive decks? → Air gaps or inert stemming decks between explosive charges
27. What is the primary purpose of a 'day box' (field box) used at a blasting work site? → To temporarily hold small quantities of explosives needed for that day's operations
28. Which document outlines proper explosive handling procedures? → Standard Operating Procedures (SOPs)
29. When should a risk register be updated? → Continuously as new risks emerge and existing risks change
30. When should a strategic plan be revised? → When significant changes in the internal or external environment require adaptation