CES Emergency Response & Incident Management Flashcards
6 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 6 CES Emergency Response & Incident Management flashcards as text
What is the standard waiting time before approaching a misfired electric blast?
Answer: At least 30 minutes after the last attempt to fire, with the blasting machine disconnected and shorting clips applied to lead wires
Industry standards and ATF guidelines require waiting at least 30 minutes before approaching a misfired electric blast, with the circuit shunted to prevent stray current ignition.
Which federal agency has primary jurisdiction over investigating explosive-related incidents at commercial mines?
Answer: Mine Safety and Health Administration (MSHA)
MSHA has jurisdiction over explosives incidents at mining operations under the Federal Mine Safety and Health Act, and is required to investigate fatal or serious injury events.
What personal protective equipment (PPE) is specifically important when handling post-blast fumes and residues in an underground blast area?
Answer: Respiratory protection (SCBA or supplied air) to protect against toxic nitrogen oxide and carbon monoxide fumes
Post-blast gases including NOx and CO are toxic and may accumulate in underground excavations, requiring respiratory protection before re-entry.
What is the purpose of 'hot seat' or 'blow-out' monitoring after an unexploded ordnance (UXO) encounter on a construction site?
Answer: To ensure UXO items are identified, marked, and the area evacuated before a licensed EOD specialist responds
When UXO is encountered, work stops immediately, the area is marked and evacuated, and a licensed EOD contractor is called — never attempt to move or disarm UXO without specialized training.
Which NFPA standard provides guidance on emergency response to explosives incidents at storage magazines?
Answer: NFPA 495: Explosive Materials Code, which includes storage, safety distances, and emergency procedures
NFPA 495 governs the manufacture, transportation, distribution, storage, and use of explosive materials and includes emergency procedures for magazine incidents.
What does 'sympathetic detonation' mean in the context of an explosive storage emergency?
Answer: The unintended detonation of one explosive charge triggered by the shock wave or heat from an adjacent detonating charge
Sympathetic detonation occurs when a detonating explosive initiates a nearby explosive through shock transmission, which is a key reason for separation distances in magazine design.