System Exam Practice Questions And

FDNY P98 Fuel-Oil Piping and Storage System Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the maximum allowable working pressure for standard

residential fuel-oil piping?

• 10 psi
• 15 psi
• 30 psi
• 60 psi
• 15 psi

Rationale: Standard residential fuel-oil piping is designed for low-

pressure systems and should not exceed 15 psi to prevent leaks or ruptures. 1 / 4

• Which material is most commonly used for underground fuel-oil

piping?

a) Copper

b) Steel

c) Polyethylene (PE)

d) PVC

c) Polyethylene (PE)

Rationale: Polyethylene piping is corrosion-resistant, flexible, and

approved for underground fuel-oil installations.

• How often must aboveground fuel-oil storage tanks be inspected

according to FDNY regulations?

a) Every month

b) Every 6 months

c) Annually

d) Every 5 years

c) Annually

Rationale: FDNY requires annual inspections to ensure tanks are in

safe condition, free from leaks or corrosion.

• What is the minimum clearance required between an aboveground

fuel-oil tank and a building?

• 1 foot
• 5 feet
• 10 feet 2 / 4

• 15 feet
• 5 feet

Rationale: A minimum clearance of 5 feet helps prevent fire hazards

and allows access for maintenance.

• What device is required on all oil tanks to prevent overfilling?

a) Pressure gauge

b) Automatic shutoff valve

c) Sight gauge

d) Relief valve

b) Automatic shutoff valve

Rationale: Automatic shutoff valves prevent spillage and overfilling,

which could lead to fire hazards or environmental contamination.

• Which of the following is an approved method to detect leaks in

underground fuel-oil piping?

a) Visual inspection only

b) Hydrostatic testing

c) Pressure testing with nitrogen

d) Both b and c

d) Both b and c

Rationale: FDNY approves hydrostatic and pressure testing with inert

gases to detect leaks safely without risk of fire.

• What is the maximum capacity allowed for a residential aboveground

fuel-oil storage tank without requiring special permits? 3 / 4

• 250 gallons
• 500 gallons
• 1,000 gallons
• 2,000 gallons
• 500 gallons

Rationale: Residential tanks up to 500 gallons generally do not

require special FDNY permits but must comply with installation codes.

• Which type of venting is required for fuel-oil tanks?

a) Closed vent

b) Open vent

c) Pressure relief vent

d) No venting required

b) Open vent

Rationale: Open venting prevents pressure buildup and allows safe

filling and withdrawal of fuel.

• How far must a fuel-oil tank be from a property line?
• 2 feet
• 5 feet
• 10 feet
• 15 feet
• 10 feet
• / 4