Cargo Compartment Minimum Performance Standards

1
Cargo Compartment Minimum Performance Standards
for Gaseous Total Flood Agents
Final report documenting the MPS and the results
of Halon 1301 testing on the four required fire
scenarios is in final review within the FAA and
will be published shortly.
FAA Technical Center Fire Safety Section,
AAR-422 John Reinhardt Website
www.fire.tc.faa.gov
2
Bulk Load Scenario
Cargo Compartment 2000 ft3
Leak Rate 50 CFM
Instrumentation Type K Thermocouple, Gas
Analyzer
Fire Load 178 card board boxes (30 of Vol.)
containing 2.5 lbs of shredded paper
Ignition Nichrome wire wrapped around folded
paper towels
System Activation 1 min. after one of the
ceiling T/C reaches 200 oF
Test Duration Five tests _at_ 30 minutes each.
3
Containerized Load Fire Scenario
Cargo Compartment 2000 ft3
Leak Rate 50 CFM
Instrumentation Type K Thermocouple, Gas
Analyzer
Fire Load 33 card board boxes inside an LD3.
Three LD3 in Cargo
Ignition Nichrome wire wrapped around folded
paper towels
System Activation 1 min. after one of the
ceiling T/C reaches 200 oF
Test Duration Five tests _at_ 30 minutes each.
4
Surface Burning Fire Scenario
Cargo Compartment 2000 ft3
Leak Rate 50 CFM
Instrumentation Type K Thermocouple, Gas
Analyzer
Fire Load 0.5 U.S. Gallon of Jet A fuel (with
13 oz of gasoline)
Ignition Arc created by sparking electrodes
System Activation 1 min. after one of the
ceiling T/C reaches 200o F.
Test Duration 5 minutes
5
Exploding Aerosol Can Fire Scenario
Cargo Compartment 2000 ft3
Leak Rate 50 CFM
Instrumentation Type K Thermocouple, Gas
Analyzer
Fire Load 0.2 lb. Propane, 0.6 lb. of Denatured
Alcohol, 0.2 lb of water
Ignition Arc created by sparking electrodes
Simulator Activation When the agent, at 2 feet
from the floor, is at the minimum vol. design
concentration
Test Duration 15 seconds after the activation
of the simulator
6
Bulk Load and Containerized Tests
7
Bulk Load and Containerized Tests
8
Surface Burning Fire
9
Surface Burning Fire
10
Acceptance Criteria for Gaseous Agents
11
Non-gaseous agents or systems
Bulk load, containerized load and surface burning
fire scenarios are identical to the requirements
for gaseous agents.
Imposing the aerosol can scenario on a water mist
system will eliminate the possibility of
certifying that type of system to the MPS.
Water mist testing by FAA and FIREDASS using
various systems has shown significantly lower
ceiling temperatures than those achieved using
Halon 1301.
Additional FAA water mist testing is planned to
determine the ability of the system to prevent
the rupture and ignition of actual aerosol cans.
12
Future Activities
Complete MPS testing with 8 Yulian acoustic water
mist nozzles. Conduct aerosol can testing. May
2000.
Conduct all required MPS testing using FE-25
(HFC125) agent. June 2000.
Finalize and publish MPS requirements for
non-gaseous agents or systems.