FIRETRACE FK-5-1-12 - Table 21 - Class a Minimum Design Concentrations; Table 22 - Class B Minimum Design Concentrations; Table 23 - Class C Minimum Design Concentrations (3 M Novec 1230, Noah NY5112 & Dukare 1230); Table 24 - Class C Minimum Design Concentrations (Waysmos FK-5-1-12)

800027-A 22 06/05/2023
Minimum design concentrations to be used with Firetrace Pre-Engineered FK-5-1-12 ILP Automatic Suppression Units can be found in Table 21 –
Class A Minimum Design Concentrations and Table 22 – Class B Minimum Design Concentrations. For all other Class B fuels not shown in Table 22
– Class B Minimum Design Concentrations, the minimum design concentration can be calculated as follows:
      
where: MDC = minimum design concentration
EC = minimum extinguishing concentration, determined using the cup burner test method
SF = safety factor, 1.3
MF = multiplication factor, 1.032 for Firetrace FK-5-1-12 ILP Units
The maximum volume limitations and minimum temperature specifications MUST be followed in order to maintain the correct safety factor. It is
recommended that the designer consult with Firetrace, NFPA 2001, and the local authority having jurisdiction, as to the suitability on the use of FK-5-
1-12 for a particular hazard, for personnel exposure effects from the design concentrations, and for installation requirements.
Table 21 – Class A Minimum Design Concentrations
Fuel
Extinguishing
Concentration Class A
(vol%)
Extinguishing
Concentration Class B
(vol%)
Multiplication
Factor
Minimum Design
Concentration
(%)
Class A
3.34 – 3.75
4.50 – 4.53
1.032
4.675
Table 22 – Class B Minimum Design Concentrations
Fuel
Extinguishing
Concentration Class B
*
(vol%)
Minimum
Safety Factor
Multiplication
Factor
Minimum Design
Concentration
(%)
Acetone
4.3
1.3
1.0317
5.89**
Ethanol
5.5
1.3
1.0317
7.38
n-Heptane
4.5
1.3
1.0317
6.04
Methanol
6.5
1.3
1.0317
8.72
1-Propanol
5.4
1.3
1.0317
7.25
Toluene
3.5
1.3
1.0317
5.89**
*
Class B extinguishing concentration values were derived using the cup burner test method
**
Minimum design concentrations cannot be less than 5.89% for any Class B fuel
Table 23 – Class C Minimum Design Concentrations (3M™ Novec™ 1230, Noah NY5112 & Dukare 1230)
Fuel
Extinguishing
Concentration Class A
(vol%)
Minimum
Safety
Factor
Multiplication
Factor
Minimum Design
Concentration
(%)
Class C
3.35
1.35
1.032
4.667
Table 24 – Class C Minimum Design Concentrations (Waysmos FK-5-1-12)
Fuel
Extinguishing
Concentration Class A
(vol%)
Minimum
Safety
Factor
Multiplication
Factor
Minimum Design
Concentration
(%)
Class C
3.51
1.35
1.032
4.890
Table 25 – Class C Minimum Design Concentrations (Chemori 5112™)
Fuel
Extinguishing
Concentration Class A
(vol%)
Minimum
Safety
Factor
Multiplication
Factor
Minimum Design
Concentration
(%)
Class C
3.75
1.35
1.032
5.225