FDNY W94 Install, Test and Repair

FDNY W94 – Install, Test and Repair Flammable & Commercial Liquid Tankers Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary FDNY concern when installing or repairing

flammable liquid tankers?

• Odor control
• Environmental noise
• Prevention of leaks and ignition sources
• Tank color

Rationale: Preventing leaks and ignition sources is essential because

flammable liquids present major fire and explosion hazards.

• When testing a tanker with flammable liquid capability, what must be

verified first? 1 / 4

• Exterior paint coating
• Integrity of all valves and fittings
• Decal placement
• Driver’s license class

Rationale: Valve and fitting integrity ensures safe containment of

flammable liquids during operation.

• Which code primarily governs tanker operations in NYC?
• OSHA Subpart J
• NYC Fire Code (FC)
• DOT Part 391

D. ASTM F1500

Rationale: All FDNY certifications require compliance with the NYC Fire

Code.

4. A tanker must be bonded and grounded during loading to prevent:

• Vibrations
• Hose tangling
• Static electricity ignition
• Water contamination

Rationale: Static discharge can ignite flammable vapors during transfer.

• / 4

5. Before installing new piping on a tanker, the technician must:

• Wash the exterior
• Drive the vehicle 5 miles
• Ensure system is depressurized and vapors removed
• Remove all signage

Rationale: Working on a pressurized or vapor-filled system risks explosion.

• Which classification applies to gasoline transported by tanker?
• Class II
• Class I flammable liquid
• Class III
• Combustible solid

Rationale: Gasoline has a flash point below 100°F, making it Class I.

7. The minimum fire extinguisher rating required on most tankers is:

A. 2-B

B. 4-A

C. 20-B:C

• K

Rationale: DOT and FDNY require large BC-rated extinguishers for

flammable liquids.

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8. When performing a pressure test on a tanker, the test pressure must:

• Exceed triple MAWP
• Match MAWP exactly
• Not exceed MAWP
• Be uncontrolled

Rationale: Exceeding MAWP can damage vessels and create safety

hazards.

• During installation or repair, which PPE is mandatory?
• Rubber sandals
• Flame-resistant clothing
• Nylon jacket
• No PPE required

Rationale: FR clothing protects against flash fire hazards.

• What should be done if a leak is detected during tanker loading?
• Continue carefully
• Reduce flow rate
• Stop transfer and secure area
• Ignore if small

Rationale: Any leak can release flammable vapors and must be addressed

immediately.

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