NFPA 10 Changes & Extinguisher Maintenance

NFPA 10 Changes & Extinguisher Maintenance

Definitions:– Clean agent– Maintenance– 30 day inspections

Pressurized Fires– Liquids– Forced– Pumped– Sprayed


1984:– Replace at next 6-year hydrostatic test– Does not apply to wheeled units– Fixed nozzle


Operating Instruction/Identification– Pictographic – Easier to identify– Standardized throughout the industry


Certified personnel– Factory trained– Certified by AHJ– Licensing


Maintenance Procedures:– Physical condition– Mechanical parts– Hoses on wheeled units


Maintenance Procedures– Rechargeable stored pressure dry chemical hand

portable extinguishers


After today’s presentation ask yourself

Are we using the right

fire extinguisher?

Will it put out our fires?

Are we keeping SAFETY

our #1 priority?


Combustible Metals – ease of ignition of thin sections, fine particles, or molten metal


Form of metal affects combustibility Castings, blocks, billets, extrusions, etc. will not

react or burn easily Turnings & shavings will react more easily to

water & ignition source Powders may react to moist air, burn easily, even

explode if airborne The more finely divided, the easier to ignite


Heat from grinding, machining, sparks, or other burning fuels usually causes ignition in these metals

Most metals burn at very high temperatures Relative slow progression of fire compared to

Class “B” – closer to Class “A” rate Toxic/caustic fumes Once ignited most metals will

react violently with water


Other fire considerations Magnesium melts as it burns & may form puddles

of molten magnesium – explosion hazards with water

Alkali metals react violently with halons Detonation can occur in reaction between

potassium and bromine in halons Lithium will burn in nitrogen Lithium fumes are more profuse & dense


Magnesium Chips

MET-L-X


Magnesium Chips

Water


Sodium Bar

MET-L-X


Sodium Bar

Water


NFPA Standards: 480 - storage, handling, processing - magnesium 481 - storage, handling, processing - titanium 482 - storage, handling, processing - zirconium 484 - combustible metals, metal powders, metal dusts 654 - prevention of fire & dust explosions – mfg,

processing, handling NFPA Fire Protection Handbook – Latest edition 2008 Material Safety Data Sheets (MSDS) from suppliers of

metals


Please join us at the Simulator to test your skills on putting out flammable liquid fires


NFPA 10 Changes & Extinguisher Maintenance

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