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The four methods for filling liquid agent shall be determined using these to prevent overfilling - Exact measurement by weight or volume, anti-overfill tube, fill mark on side of extinguisher For low pressure cylinders, if pressure is not specified on nameplate, what shall they be test to, but to...

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  • August 20, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • FEX Seattle
  • FEX Seattle

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FEX Seattle Study guide
The four methods for filling liquid agent shall be determined using these to prevent overfilling -
Exact measurement by weight or volume, anti-overfill tube, fill mark on side of extinguisher



For low pressure cylinders, if pressure is not specified on nameplate, what shall they be test to, but to to
exceed three time service pressure? - factory test pressure



DOT 3A, 3AA, or 3AL cylinders used as carbon dioxide extinguishers, OR nitrogen cylinders, argon
cylinders, or carbon dioxide cylinders used with wheeled extinguishers shall be tested to what fraction of
the service pressure, when on the topic of high pressure cylinders? - 5/3



All cylinders and apparatuses, except water based, need to have what happen after testing? -
Thoroughly dried



At what temperature should extinguishers having aluminum cylinders or shells suspected of being
exposed to this temperature be removed from service and hydrotested? - >350F



Cartridge and cylinder operated dry chemical and dry powder types shall be hydro'd at what test
pressure? - Original factory test pressure



Class D hazard fire extinguisher travel distance? - 75 ft



Class K hazard maximum travel distance? - 30 ft



Cylinders (except those charged with carbon dioxide) complying with 49 CFR 180.2098(b) shall be
permitted to be hydro tested how often? - Every 10 years



Cylinders & cartridge bearing what two symbols are regulated to their own regulations - DOT and
TC

, Extinguishers manufactured prior to what date are not required to have as strict of labeling standards?
(Labeling code 4.1.2) - 1/1/1986



Extinguishers shall be located along normal paths of travel, INCLUDING exits. True or False? - True



FE's weighing less than 40lb should be installed so that the top of device is no more than how far from
the ground? - 5 ft



Fire extinguishers shall not be further than how many feet away from flammable liquids of appreciable
depth? - 50 ft



General labeling types for water based extinguishers - ANSI/UL626 and CAN/ULC-S507



How long should the pressure of a hydro test be held? - 30 seconds



How often are Co2 hoses supposed to be conductivity tested? - Yearly



How often do master gauges or dead weight testers be calibrated? - Annually



How often will pump tank water and pump tank calcium-chloride based antifreeze types of fire
extinguishers be recharged with new chemicals or water as applicable? - 12 months



How often will the premixed agent in liquid charge type AFFF and FFFP fire extinguishers shall be
replaced how often? - Every 3 years



If a conductivity test on a Co2 hose fails, what occurs? - Replacement



If using heated air to dry a cylinder after hydrotesting, what is the maximum temperature of that air? -
150

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