ICAO Levels B & C – a comparison of application rates
As you may already know, the application rates for the new ICAO Levels B & C tests are different.*
For Level B the rate is 2.5L/min/m², compared with 1.75L/min/m² Level C - a reduction of 30%!
But how does this difference affect foams in use?
An article published in OTAC (Overseas Territories Aviation Circular) provided guidance on the amount of foam needed in use, directly comparing foams meeting both ICAO Level B and Level C – a summary of which can be seen below.
In summary and in line with the testing specifications, 30% less foam is required of a Level C foam compared with one that meets only Level B – a considerable saving!
Aberdeen Foam 3% AFFF-C6 Airport Foam meets ICAO Level C – so why choose anything else? For further information please click here or contact us.
|
|
Foam meeting ICAO Level B |
Foam meeting ICAO Level C |
||||||
|
Size of Aircraft (metres) |
Water (litres) |
3% foam concentrate (litres)** |
6% foam discharge (litres)** |
Foam discharge (litres / minute) |
Water (litres) |
3% foam concentrate (litres)** |
6% foam discharge (litres)** |
Foam discharge (litres / minute) |
|
<9 |
230 |
14 |
28 |
230 |
160 |
8.5 |
19 |
160 |
|
>9 - <12 |
670 |
40 |
80 |
550 |
460 |
27.5 |
55 |
360 |
|
>12 - <18 |
1200 |
72 |
144 |
900 |
820 |
49 |
98 |
630 |
|
>18 - <24 |
2400 |
144 |
288 |
1800 |
1700 |
102 |
204 |
1100 |
|
>24 - <28 |
5400 |
324 |
648 |
3000 |
3900 |
234 |
468 |
2200 |
|
>28 - <39 |
7900 |
474 |
948 |
4000 |
5800 |
348 |
696 |
2900 |
|
>39 - <49 |
12100 |
726 |
1452 |
5300 |
8800 |
528 |
1056 |
3800 |
|
>49 - <61 |
18200 |
1092 |
2184 |
7200 |
12800 |
768 |
1536 |
5100 |
|
>61 - <76 |
24300 |
1458 |
2916 |
9000 |
17100 |
1026 |
2052 |
6300 |
|
>76 - <90 |
32300 |
1938 |
3876 |
11200 |
22800 |
1368 |
2736 |
7900 |
* If you don’t already know, please see our news story here.
** Volume of foam concentrate is at required aerodrome availability of 200%
For a copy of the full OTAC article, please click here.