Communication & Documentation 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 Communication & Documentation flashcards as text
A shot report for a quarry blast should include the specific gravity of the rock being blasted primarily because it affects which calculation?
Answer: Powder factor and energy requirements
Rock specific gravity directly influences powder factor calculations and the amount of explosive energy needed to fragment the material.
In a seismograph report following a blast, the value most directly used to evaluate potential structural damage to nearby buildings is:
Answer: Peak particle velocity (PPV)
Peak particle velocity (PPV) is the standard measurement used to assess ground vibration impact on structures according to USBM RI 8507.
A certified explosives specialist discovers a discrepancy between the quantity of explosive received and the quantity recorded in the magazine inventory. The first required action is to:
Answer: Conduct an internal count and document the discrepancy
Before any reporting or action, the specialist must conduct a recount and document the discrepancy to establish the accurate facts.
Which document serves as the primary legal authorization allowing a licensed explosives user to transport explosives on public roads?
Answer: The DOT hazmat transportation permit
DOT hazmat transportation regulations govern the movement of explosives on public roads, and carriers must comply with DOT placarding and permit requirements.
When documenting a blast hole pattern in a blaster's log, which measurement is MOST important for post-blast analysis of fragmentation results?
Answer: Burden and spacing dimensions
Burden and spacing dimensions directly control fragmentation and are the primary variables analyzed to optimize future blast designs.
A blaster must communicate an emergency stop to the firing crew. According to standard industry protocol, the universal warning signal is:
Answer: A series of short, rapid horn blasts
A series of short, rapid blasts on a horn or siren is the universally recognized emergency stop or danger signal at blast sites.
Environmental compliance documentation for a surface mine blast must typically include monitoring data for which two primary concerns?
Answer: Ground vibration and air overpressure
Ground vibration (PPV) and air overpressure are the two primary environmental parameters monitored and documented for regulatory compliance in surface blasting.