FE Inspection & Maintenance Procedures 2

Question 1

When performing an annual maintenance on a stored-pressure dry chemical extinguisher, what action is required regarding the agent?

Accepted Answer

Weigh and inspect the agent; replace only if clumped or moisture-contaminated

Answer

NFPA 10 requires the agent be inspected and replaced if it shows signs of moisture absorption or caking, not replaced automatically every year.

Question 2

A CO2 extinguisher is considered to require recharging when its weight loss exceeds what threshold?

Accepted Answer

10% of net agent weight or 1 lb, whichever is less

Answer

NFPA 10 specifies recharging when CO2 weight loss exceeds 10% of the net listed agent weight or 1 lb, whichever is less.

Question 3

Which component must be replaced during the 6-year maintenance of a stored-pressure dry chemical extinguisher?

Accepted Answer

All seals, gaskets, and valve components subject to leakage

Answer

The 6-year maintenance procedure requires removal and inspection of all internals, including replacement of all seals, gaskets, and O-rings.

Question 4

During an annual maintenance inspection, a technician finds a dry chemical extinguisher with a slightly dented cylinder body. What is the correct action?

Accepted Answer

Remove from service and condemn if dent affects structural integrity

Answer

NFPA 10 requires cylinders with dents that compromise structural integrity to be removed from service and condemned, not repaired.

Question 5

What interval is required for hydrostatic testing of a dry chemical stored-pressure extinguisher?

Accepted Answer

12 years

Answer

NFPA 10 requires hydrostatic testing of stored-pressure dry chemical extinguishers every 12 years.

(FE) Certified Portable Fire Extinguisher Technician Practice Test

(FE) Certified Portable Fire Extinguisher Technician Practice Test

FE Inspection & Maintenance Procedures 2