4-2
90-FM200M-000 September 2004
FM-200
®
ECS Series Engineered Fire Suppression Systems
4-2.2.7 USING THE FM-200 CONCENTRATION
FLOODING FACTORS
To find the total quantity of FM-200 required at a specific
temperature and concentration, multiply the hazard area
volume by the multiplier from Tables 4-3 and 4-4
that correspond to the design temperature and concen-
tration desired.
Note: NFPA 2001 and the U.S. Environmental Protec-
tion Agency Significant New Alternatives Policy
(SNAP) provide specific guidelines for using
FM-200. The minimum use concentration for to-
tal flooding applications is 6.25% w/v, unless a
higher concentration is required for the specific
hazard being protected.
The agent required must be based on the lowest
expected ambient temperature in the protected
space. Care must be taken that the calculated
concentration for normally occupied spaces at
the highest expected ambient temperature in the
space does not exceed the value of 10.5% per
NFPA 2001.
Per NFPA 2001, 2000 edition FM-200 systems with use
concentrations below the NOAEL (9% w/v) are permitted
for use in occupied areas. FM-200 can be designed be-
tween 9% and 10.5% for a five minute exposure using the
PBPK model.
Table 4-1. Atmospheric Correction Factors
edutitlAtnelaviuqE
rotcaF
erusserPerusolcnE
cirehpsomtA
noitcerroC
mk29.0.tf000,3-gHmc0.48aisp.52.6111.1
mk16
.0.tf000,2-gHmc2.18aisp17.5170.1
mk03.0.tf000,1-gHmc7.87aisp32.5140.1
mk00.0.tf0gHmc0.67aisp17.4100.1
mk03.0tf
000,1gHmc3.37aisp81.4169.0
mk16.0tf000,2gHmc5.07aisp46.3139.0
mk29.0tf000,3gHmc8.76aisp21.3198.0
mk12.1tf000,4g
Hmc0.56aisp85.2168.0
mk29.0tf000,5gHmc2.26aisp40.2128.0
mk25.1tf000,6gHmc6.95aisp35.1187.0
mk38.1tf000,7gHmc0.
75aisp30.1157.0
mk31.2.tf000,8gHmc0.55aisp46.0127.0
mk44.2.tf000,9gHmc8.25aisp22.0196.0
mk50.3.tf000,01gHmc5.0
5aisp77.966.0
4-2.2.8 MANIFOLDS
When multiple cylinders are needed, they may be connected
to the same set of distribution piping through a manifold.
This is necessary in three circumstances.
1. A connected reserve supply of FM-200 is required.
2. The quantity of agent required is greater than the maxi-
mum fill of a single cylinder.
3. A single cylinder does not contain enough nitrogen to
discharge the required agent through the pipe network.
In accordance with standards set by NFPA 2001:
All cylinders are of the same size and quantity.
Each cylinder must have an El-check or swing-
check to prevent back flow of agent through the
discharge hose in case the system is discharged
while a cylinder is removed for maintenance.
Standard check valves MUST be installed and modeled in
the calculation software whenever all of the following con-
ditions exist:
Multiple cylinders are required, and
A connected reserve supply is required, and
Multiple cylinder actuation from a master
FM-200 cylinder.
4-2.3 Design Criteria
The complexity of two-phase flow formulas does not allow
for any simple method of manual FM-200 calculation. For
this reason, the flow calculations and design criteria de-
scribed in this manual have been programmed into a com-
puter software program.
CAUTION
!
Kidde ECS Series FM-200 Flow Calculation
Computer Design Software is the only
calculation method to be used with Kidde
FM-200 equipment. No other calculation
method is accepted by Kidde.
The system designer must become thoroughly familiar with
the User's Manual for Kidde ECS Series FM-200 Flow Cal-
culation Program (P/N 90-FM200M-100) to determine the
proper procedures for applying the input parameters to the
Kidde computer program. There are a number of limita-
tions to these input parameters which must be observed if
accurate results are to be obtained. Most of these limita-
tions are in the program. However, there are certain re-
strictions that must be addressed by the system designer
before applying the input data. The following paragraphs
describe the essential design parameters and design limi-
tations which must be considered.
To Next Page
Loading...
Need help?
General
