FDNY E17 Explosives Loader Exam

FDNY E17 Explosives Loader Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary duty of an explosives loader at a blasting site?
• Conduct post-blast analysis
• Supervise permit documentation
• Safely load explosive materials into boreholes
• Determine vibration limits

Rationale: Loaders are responsible for accurate and safe loading of

explosives into designated holes.

• Which document must be present at the site before explosives can be

loaded? 1 / 4

• Fire guard certificate
• Valid FDNY blasting permit
• Equipment maintenance log
• Environmental survey

Rationale: A valid FDNY blasting permit is required before any explosive

loading begins.

• Who has final authority to approve loading operations?
• Equipment operator
• Licensed blaster in charge
• Explosives loader
• Site foreman

Rationale: Only the licensed blaster may authorize the commencement of

loading explosives.

• What safety zone must be established during loading?
• 10-foot radius
• 20-foot radius
• Controlled blast area per the blasting plan
• No zone required

Rationale: Safety zones are defined in the site blasting plan and must be

strictly followed. 2 / 4

5. Explosives should be transported to the loading area using:

• Any vehicle on site
• Bare-hand carrying
• Approved Type 3 or 4 magazines/containers
• Any sealed metal box

Rationale: FDNY requires approved containers for explosives movements

to ensure safety.

6. When loading explosives, the loader must confirm boreholes are:

• Completely dry
• More than 10 feet deep
• Marked with flags
• Free of obstructions and conforming to the blast design

Rationale: Holes must match design specifications to prevent misfires or

energy loss.

• Which of the following must never be used to tamp explosives?
• Wooden tamping rod
• Plastic tamping rod
• Metal rod 3 / 4

• Fiberglass tamping tool

Rationale: Metal rods may spark and ignite explosives.

8. The loader must maintain communication primarily with:

• Security personnel
• The blaster in charge
• Truck drivers
• Passersby

Rationale: Loading is performed under the direct supervision and

communication of the licensed blaster.

• What should be done if water is present in a borehole?
• Cancel the blast
• Ignore it
• Use water-resistant explosives if approved by the blaster
• Pump out only half the water

Rationale: Water-resistant explosives are used when conditions allow and

the blaster approves.

• Detonators must be stored separately from explosives because:
• / 4