FEX SEATTLE FINAL PAPER QUESTIONS AND SOLUTIONS
2025/2026 ALL GRADED A+
✔✔If using heated air to dry a cylinder after hydrotesting, what is the maximum
temperature of that air? - ✔✔150
✔✔Pressure shall be applied at a ______ __ ____ such that the test pressure is
reached in 1 minute. - ✔✔rate of rise
✔✔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
✔✔Cartridge and cylinder operated dry chemical and dry powder types shall be hydro'd
at what test pressure? - ✔✔Original 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
✔✔Nitrogen, argon, and carbon dioxide cylinders as well as cartridges for inert gas
storage that are used as expellant for wheeled extinguishers shall be hydro tested how
often? - ✔✔Every 5 years unless DOT or TC requirments are different
✔✔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
✔✔True or false: Hydro testing shall NOT be performed on FE hose assemblies that
have a shut off nozzle at the end of the hose. - ✔✔False
✔✔What pressure should Co2 FE's having clyinder specification ICC3 shall be tested
to? - ✔✔3000 psi
✔✔Low pressure accessory hose used on a wheeled extinguisher shall be tested at
what psi? - ✔✔300 psi
✔✔True or false: The AHJ can be a building official. - ✔✔True
✔✔Symbol for a Type A fire? (Trash, wood, paper) (Ordinary Combustibles) - ✔✔Green
Triangle
✔✔Symbol for a Type B fire? (Flammable liquids) - ✔✔Red Square
2025/2026 ALL GRADED A+
✔✔If using heated air to dry a cylinder after hydrotesting, what is the maximum
temperature of that air? - ✔✔150
✔✔Pressure shall be applied at a ______ __ ____ such that the test pressure is
reached in 1 minute. - ✔✔rate of rise
✔✔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
✔✔Cartridge and cylinder operated dry chemical and dry powder types shall be hydro'd
at what test pressure? - ✔✔Original 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
✔✔Nitrogen, argon, and carbon dioxide cylinders as well as cartridges for inert gas
storage that are used as expellant for wheeled extinguishers shall be hydro tested how
often? - ✔✔Every 5 years unless DOT or TC requirments are different
✔✔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
✔✔True or false: Hydro testing shall NOT be performed on FE hose assemblies that
have a shut off nozzle at the end of the hose. - ✔✔False
✔✔What pressure should Co2 FE's having clyinder specification ICC3 shall be tested
to? - ✔✔3000 psi
✔✔Low pressure accessory hose used on a wheeled extinguisher shall be tested at
what psi? - ✔✔300 psi
✔✔True or false: The AHJ can be a building official. - ✔✔True
✔✔Symbol for a Type A fire? (Trash, wood, paper) (Ordinary Combustibles) - ✔✔Green
Triangle
✔✔Symbol for a Type B fire? (Flammable liquids) - ✔✔Red Square
