EGSA EGSA Fuel Systems and Storage

Question 1

According to NFPA 30 and NFPA 110, what is the maximum allowable capacity for a day tank installed inside a building for a diesel generator set?

Accepted Answer

100 gallons

Answer

50 gallons

Answer

250 gallons

Answer

500 gallons

Question 2

What is the primary purpose of a fuel polishing system on a diesel generator installation?

Accepted Answer

Remove water, sediment, and microbial contamination from stored fuel

Answer

Increase fuel pressure to the injectors

Answer

Blend biodiesel additives into the fuel supply

Answer

Reduce fuel temperature before injection

Question 3

Which ASTM standard governs the specification for diesel fuel used in standby generator applications in the US?

Accepted Answer

ASTM D975

Answer

ASTM D396

Answer

ASTM D4814

Answer

ASTM D2880

Question 4

What microbial growth condition is commonly found in diesel fuel storage tanks and can clog filters and damage fuel systems?

Accepted Answer

Sulfate-reducing bacteria and fungi at the fuel-water interface

Answer

Algae bloom

Answer

Aerobic yeast in the vapor space

Answer

Iron-oxidizing bacteria near the tank vent

Question 5

What is the recommended maximum storage life for diesel fuel in a properly maintained and sealed tank before polishing or testing is required?

Accepted Answer

12 months

Answer

6 months

Answer

24 months

Answer

5 years

Question 6

Which type of fuel tank is most commonly required for generator installations at critical facilities to meet NFPA 110 Level 1 requirements?

Accepted Answer

Double-wall sub-base or underground tank with leak detection

Answer

Single-wall above-ground steel tank

Answer

Fiberglass-reinforced plastic open-top tank

Answer

Galvanized steel day tank with no containment