FIRE CATEGORIES

CIVIL AIRPORTS

FIRE CATEGORIES FORMULATION

FIRE CATEGORY DEPENDS UPON THE DIMENSION ANDTHE NUMBER OF MOVEMENT OF THE AIRCRAFTS BEING OPERATED FROM THE AIRFIELD.

(a) NO OF MOVEMENT OF THE BIGGEST A/C IN THE CONSECTIVE 3 MONTHS IN A YEAR

(b) SIZE OR DIMENSION OF THE FUSELAG OF THE BIGGEST AIRCRAFT

(c) FIRE VEHICLE SPECIFICATIONS

FIRE CATEGORIESFIRE CATEGORIES/ ACFT SPECIFICATION

FIRE CAT OFFIRE CAT OFAIRPORTAIRPORT LENGTH OF FUSELAGLENGTH OF FUSELAG WIDTH OF WIDTH OF

FUSELAGFUSELAG

1 0 m up to but not including 9 m 2 METERS

2 9 m up to but not including 12 m 2 METERS

312 m up to but not including 18

m3 METERS

418 m up to but not including 24

m4 METERS

524 m up to but not including 28

m4 METERS

628 m up to but not including 39

m5 METERS

739 m up to but not including 49

m5 METERS

849 m up to but not including 61

m7 METERS

961 m up to but not including 76

m7 METERS

1076 m up to but not including 90

m8 METERS

MINIMUM USABLE AMOUNTS OF EXTINGUISHING AGENTS

FOAM MEETING PERFORMANCE LEVEL A

FOAM MEETING PERFORMANCE

LEVEL B

COMPLEMENTARY AGENTS

AERODROMECATEGORY

WATER(L)

DISCHARGE RATE

WATER(L)

DISCHARGE RATE DRY

CHEMICALPOWDERS

(KG)

HALONS(KG)

CO2(KG)

FOAM SOLUTION/

MINUTE(L)

FOAM SOLUTION/

MINUTE(L)

1 350 350 230 230 45 45 90

2 1000 800 670 550 90 90 180

3 1800 1300 1200 900 135 135 270

4 3600 2600 2400 1800 135 135 270

5 8100 4500 5400 3000 180 180 360

6 11800 6000 7900 4000 225 225 450

7 18200 7900 12100 5300 225 225 450

8 27300 10800 18200 7200 450 450 900

9 36400 13500 24300 9000 450 450 900

10 48200 16600 32300 11200 450 450 900

NUMBER OF RESCUE AND FIRE FIGHTING VEHICLES

Recommendation.- The minimum number of rescue and fire fighting vehicles provided at an aerodrome should be in accordance with the following tabulation:

AERODROME CATEGORY

RESCUE AND FIRE FIGHTING VEHICLES

1 11

2 11

3 11

4 11

5 11

6 22

7 22

8 33

9 33

10 33

During anticipated periods of reduced activity, the level of protection available shall be no less than that needed for the highest category of aeroplane planned to use the aerodrome during that time irrespective of the number of movements.

Recommendation.- The principal extinguishing agent should be:

a) A foam meeting the minimum performance level A; orb) A foam meeting the minimum performance level B; orc) A combination of these agents;

Except that the principal extinguishing agent for aerodromes in categories 1 to 3 should preferably meet the minimum performance level B.

Note.- Information on the required physical properties and fire extinguishing performance criteria need for a foam to achieve an acceptable performance level A or B rating is given in the Airport Services Manual, Part I.

Recommendation.- The complementary extinguishing agent should be:a) CO, ; orb) Dry chemical powders; orc) Halogenated hydrocarbons (halons); ord) A combination of these agents.

Note I.- When selecting DCP for use with foam, care must be exercised to ensure compatibility.

Note 2.- Dry chemical powders and halons are normally considered more efficient than CO, for aircraft rescue and firefighting operations.

Note 3.- The production of halons ceased on 31 December 1993 as greed by the Parries to the Montreal Protocol.