Risk Management & Quality Assurance 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 Risk Management & Quality Assurance flashcards as text
An explosives storage magazine fails an annual ATF compliance inspection due to missing ventilation. Under 27 CFR 555, the licensee must:
Answer: Cease storage in that magazine until the deficiency is corrected
A magazine that does not meet construction and ventilation standards cannot lawfully store explosive materials; operations must stop until the deficiency is remedied.
Which document is the primary quality assurance record demonstrating that an explosive product conforms to its specification at the time of manufacture?
Answer: Certificate of Conformance (CoC)
A Certificate of Conformance is the manufacturer's formal declaration that the product meets all specified requirements at the time of production.
When calculating the Probability of Initiating a Sympathetic Detonation (PISD) between two adjacent magazine locations, which factor has the GREATEST influence?
Answer: Inter-magazine distance relative to the Inhabited Building Distance (IBD)
The separation distance between magazines relative to the applicable quantity-distance (QD) tables is the primary determinant of sympathetic detonation probability.
A contractor's blasting procedure requires a 30-minute wait before approaching a misfire. A new crew member enters the blast zone after 10 minutes citing 'no sign of detonation.' The MOST appropriate corrective action is:
Answer: Issue an immediate written safety violation and retrain the employee
A written safety violation documents the breach and triggers mandatory retraining — proportionate to a first-instance procedural violation in most QA/safety programs.
Which statistical sampling plan is most commonly used for lot acceptance testing of electric detonators in the US explosives industry?
Answer: ANSI/ASQ Z1.4 (Attributes sampling)
ANSI/ASQ Z1.4 attribute sampling plans are the industry standard for inspecting discrete pass/fail characteristics of detonator lots.
The purpose of a pre-blast safety checklist in a formal QA system is PRIMARILY to:
Answer: Ensure every critical safety task is verified before initiation
Pre-blast checklists are error-proofing tools (poka-yoke) designed to guarantee that no critical safety step is omitted before initiating the blast.
An explosives manufacturer's internal audit finds that a batch of ANFO was mixed at 92% ammonium nitrate / 8% fuel oil instead of the standard 94/6 ratio. The PRIMARY quality concern is:
Answer: Reduced oxygen balance leading to higher CO production
Excess fuel oil shifts ANFO to a negative oxygen balance, producing more carbon monoxide and carbon soot (post-blast fumes) rather than CO₂ and N₂.