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Fire Extinguisher Testing and Maintenance: A Comprehensive Guide, Exams of Safety and Fire Engineering

A comprehensive guide to fire extinguisher testing and maintenance, covering various aspects such as classification, pressure testing, recharge procedures, and safety regulations. It includes detailed information on different types of fire extinguishers, their applications, and the importance of regular inspections and maintenance for ensuring optimal performance and safety.

Typology: Exams

2024/2025

Available from 01/24/2025

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Fire Extinguisher Test Latest Update
Graded A+
Internatioal system of units ✔✔Metric
Extinguisher Service Pressure ✔✔Normal Operating pressure
Factory test pressure ✔✔Pressure at which the shell was tested at time of manufacture
Recharging ✔✔Replacement of exstinguishing agent
Servicing ✔✔Performing maintenance
Travel Distence ✔✔Actual distence traveled to nearest FE
Cartridge/ cylinder operated ✔✔FE where gas is stored seperate from agent
Nonrechargable FE ✔✔FE not capable of undergoing maintenance
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Fire Extinguisher Test Latest UpdateGraded A+

Internatioal system of units ✔✔Metric Extinguisher Service Pressure ✔✔Normal Operating pressure Factory test pressure ✔✔Pressure at which the shell was tested at time of manufacture Recharging ✔✔Replacement of exstinguishing agent Servicing ✔✔Performing maintenance Travel Distence ✔✔Actual distence traveled to nearest FE Cartridge/ cylinder operated ✔✔FE where gas is stored seperate from agent Nonrechargable FE ✔✔FE not capable of undergoing maintenance

Class A ✔✔Ordinary combustible materials Class B ✔✔Flammable liquids Class C ✔✔Fires that include Energized Electrical equipment Class D ✔✔Combustible Metals Class K ✔✔Kitchen Fire Classifying Occupancy Hazard ✔✔Rooms/ areas are to be classified as light, ordinary, or extra Class B Selection ✔✔Shall be made by recomandation of specialized equipment Manufacturer 3D fire ✔✔10 lb or greater with discharge rate of 1lb/sec or more shall be used

Pressure Regulatorspressure and flow rate ✔✔Provided with Wheeled FE's shall be tested annually for outlet static

Wetting Agent ✔✔agent shall be replaced Annually Premixed agent in liquid Charge type FE ✔✔replaced every 3 years Vapor phase of Carbon Dioxide ✔✔not less than %99. regulated source of pressure set no higher than 25psi above operating pressureto pressurize FE ✔✔shall be used

FE's having aluminum cylinder suspected of being exposed to temps higher than 350 Fbe removed and get a hydrostatic test ✔✔Shall

Test pressure gauges ✔✔shall be capable of indicating 90% to 110% of the test pressure Hydro Test Pump ✔✔shall be capable of producing not less than 150 percent of test pressure

Hydro Test Years (Dry/ Halogenated) ✔✔12 years Hydro Test Years (water chemical/ stainless steel container) ✔✔5 years Cartridges not exceeding 2 in diameter and being less than 2fttesting ✔✔shall be exempt from hydro

Cartridges with DOT stamp ✔✔shall be exempt from hydro testing pump tanks ✔✔don't need to be condemned or Hydro retested if dented or corroded Hydrostatic test pressure ✔✔Shall be maintained for 30 sec Distortion of FE ✔✔Any kind shall be cause for rejection Drying cylinders ✔✔Heated air shall not exceed 150 inside shell

Leak Test ✔✔Should be sufficiently sensitive to insure FE remains operable for at least 1 year Green Triangle Letter Shaped Symbol ✔✔Class A Red Square Letter Shaped Symbol ✔✔Class B Blue Circle Letter Shaped Symbol ✔✔Class C Yellow Star Letter Shaped Symbol ✔✔Class D Class B fuel-in-depth or appreciable depth fire situationthan 1/4 in. Which normally occurs in contained areas ✔✔Having liquid fuel depths greater

Dry Powder Typesand shovel ✔✔Intended for use on Class D fires. Can be applied from FE or by scoop

2-A rating (maximum area in square feet to be protected per extinguisher)Ordinary (3000) Extra (-) ✔✔Light (6000)

3-A rating ✔✔Light (9000) Ordinary (4500) Extra (-) 4-A rating ✔✔Light (11250) Ordinary (6000) Extra (4000) 6-A rating ✔✔Light (11250) Ordinary (9000) Extra (6000) 10-A rating ✔✔Light (11250) Ordinary (11250) Extra (10000) 20-A, 30-A, 40-A ✔✔Light, Ordinary, Extra (11250) Maximum Travel Distance to Class D ✔✔75 ft