Book 3 - Fire Extinguishing Systems and Equipment Flashcards
the ______ system is a permanently installed system, of extinguishing containers, distribution pipes and controls provided for the protection of power plants and APU’S
the ______ system is a permanently installed system, of extinguishing containers, distribution pipes and controls provided for the protection of power plants and APU’S
the container is made from steel or copper and has an _________ threaded neck to which the ________ head is screwed and soldered
the container is made from steel or copper and has an EXTERNALLY threaded neck to which the DISCHARGE head is screwed and soldered
the discharge head contains the two _________ units for rupturing the associated diaphragm and porting extinguishing in the correct direction
the discharge head contains the two CARTRIDGE units for rupturing the associated diaphragm and porting extinguishing in the correct direction
directional flow valves are a special form of ___ designed for use in two shot systems to allow the contents of one or several extinguishers to be directed into any one power plant
in some aircraft, the cross connecting of selected extinguishers between engines is accomplished by means of ________ switches which are additional to the normal firing switches
directional flow valves are a special form of NRV designed for use in two shot systems to allow the contents of one or several extinguishers to be directed into any one power plant
in some aircraft, the cross connecting of selected extinguishers between engines is accomplished by means of TRANSFER switches which are additional to the normal firing switches
discharge indicators provide positive _________ of extinguisher discharge. either the __________ or mechanical methods are used
mechanical methods are:
- indicator pin
- pressure gauges
- red (or green) indicator disc
electrical methods are:
- indicating fuses
- magnetic indicators
- warning lights
- pressure switches in bottle
- pressure switches in discharge lines
discharge indicators provide positive INDICATION of extinguisher discharge. either the ELECTRICAL or mechanical methods are used
mechanical methods are:
- indicator pin
- pressure gauges
- red (or green) indicator disc
electrical methods are:
- indicating fuses
- magnetic indicators
- warning lights
- pressure switches in bottle
- pressure switches in discharge lines
extinguisher pipelines are comprised of light alloy _______ of fire zones and stainless steel ______ fire zones
discharge is through spray rings or nozzles
flexible pipelines are also used where necessary
extinguisher pipelines are comprised of light alloy OUTSIDE of fire zones and stainless steel INSIDE fire zones
discharge is through spray rings or nozzles
flexible pipelines are also used where necessary
methyl bromide extinguishant boils at -4.6 degrees
military fire systems
no longer available. existing bottles may be maintained, but not replenished
methyl bromide extinguishant boils at -4.6 degrees
military fire systems
no longer available. existing bottles may be maintained, but not replenished
BCF is also known as Halon 1211, boiling point of -4 celsius
particularly effective against _______ and liquid fires
used for power plant and APU suppression as well as portable
little or no _________ effect and evaporates _________ on contact with fire with little or no harmful effect
BCF is also known as Halon 1211, boiling point of -4 celsius
particularly effective against ELECTRICAL and liquid fires
used for power plant and APU suppression as well as portable
little or no CORROSIVE effect and evaporates INSTANTLY on contact with fire with little or no harmful effect
BTM is also known as Halon 1301, boiling point of -58 celsius
semi-_____, used for power plant and APU suppression as well as cargo compartment
BTM is also known as Halon 1301, boiling point of -58 celsius
semi-TOXIC, used for power plant and APU suppression as well as cargo compartment
protective caps must always be fitted to the extinguisher container ______
protective caps must always be fitted to the extinguisher container OUTLET
protective rubber plugs called ______ should be fitted to cartridge units to prevent accidental operation
obviously, also handle with care
protective rubber plugs called SHUNTS should be fitted to cartridge units to prevent accidental operation
obviously, also handle with care
cartridges have a _ year storage life but only a _ year installation life
cartridges have a 5 year storage life but only a 2 year installation life
where discharge indicators are fitted in fixed systems, it does not alter the requirement for ________ weighing
where discharge indicators are fitted in fixed systems, it does not alter the requirement for PERIODIC weighing
storage periods may vary between types of extinguishers, reference must always be made to the relevant manuals
storage periods may vary between types of extinguishers, reference must always be made to the relevant manuals
halon extinguishants are extremely _________ to titanium
halon extinguishants are extremely CORROSIVE to titanium
