Presentation is loading. Please wait.

Presentation is loading. Please wait.

International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center,

Similar presentations


Presentation on theme: "International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center,"— Presentation transcript:

1 International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center Point of Contact :Doug Ingerson Department of Transportation Federal Aviation Administration WJ Hughes Technical Center Fire Safety Branch, AAR-440 Bldg 205 Atlantic City Int'l Airport, NJ USA tel: fax: web page:http://www.fire.tc.faa.gov/ SLIDE# 1

2 CONTENTS briefly EXPLAIN the equivalence process EXPLAIN the equivalent mass and concentration methods ILLUSTRATE results to date - mass/concentration equivalence DISCUSS what work remains International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 2

3 briefly EXPLAIN the equivalence process International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 3

4 PROJECT OBJECTIVES GENERATE A PROCEDURE WHICH CAN BE USED BY ANYONE TO DEMONSTRATE EQUIVALENCE TO HALON 1301 IN THE NACELLE PRODUCE CERTIFICATION CRITERIA FOR HFC-125 AND CF3I International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 4

5 Halon 1301 Volumetric Concentration certification 6% Time (sec) CONCENTRATION TEST ESTABLISH BENCHMARK for HALON 1301 RTD(ave, H1301) FIRE TEST FIND MASS EQUIVALENT OF THE REPLACEMENT CANDIDATE RTD(ave, rep.can) RTD(ave, H1301) FIRE TEST Replacement Candidate Volumetric Concentration Time (sec) CONCENTRATION TEST C EQUIV certification Analyzer Probes, Certification International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 5

6 EXPLAIN the equivalent mass and concentration methods International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 6

7 EQUIVALENCE METHOD - MASS HALON 1301 CHARACTERIZED AGAINST FIRE THREATS USING SALIENT ENVIRONMENTAL ASPECTS IN A TEST FIXTURE 2 COMBUSTION SCENARIOS - SPRAY & POOL 3 FUELS - TURBINE FUEL, LUBRICANT, HYDRAULIC FLUID MEASURE THE DURATION THE FIRE IS EXTINGUISHED BENCHMARK BASED ON THE AVERAGE OF 5 TESTS ITERATE MASS OF THE REPLACEMENT CANDIDATE AGENT DISTRIBUTION CONSTRAINED - NOT OPTIMIZED AVERAGE OF 5 TESTS MUST EQUAL OR EXCEED HALON BENCHMARK International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 7

8 Halon 1301 Replacement Candidate Volumetric Concentration A Representation of Typical Concentration Traces for Halon 1301 and a Mass Equivalent Amount of a Replacement Candidate at the Flame Front Time (sec) Concentration Equivalence Step #1 Establish the duration that the Halon 1301 concentration at the flame front is at/above 6% v/v. 6% t H1301 EQUIVALENCE METHOD - CONCENTRATION Concentration Equivalence Step #2 Use the duration from the Halon 1301 concentration profile and review the profile of the replacement candidate to find the corresponding concentration (C EQUIV ). t H1301 C EQUIV certification Notice the characteristics of the typical trace at the flame front in the certification profile : Exponential growth & decay does not permit a square wave function to meet certification. A marginal increase in the concentration profile ensured the variability in testing never produced a concentration profile less than certification. The concentration trace exceeds 6%v/v Halon 1301 for more time than 0.5 second. 6% International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 8

9 Equivalence for concentration spray fire work based on channels 1 & 2 evaluated channels for the duration at or above 6% v/v took average of the 2 channels over 3 tests International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 9

10 duration of Halon 1301 for concentration 6%v/v Equivalent concentration for the replacement candidate International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 10

11 ILLUSTRATE results to date International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 11

12 RESULTS TO DATE - MASS EQUIVALENCE WARNING !! DO NOT USE THESE NUMBERS FOR COMPARISON AGENT DISTRIBUTION IS NOT OPTIMIZED REPLACEMENT CANDIDATE QUANTITIES ARE ARTIFICIALLY LARGE GAS CONCENTRATION IS THE ONLY VALID BASIS FOR COMPARISON QUANTITIES REPORTED FOR THE PURPOSE OF COMPLETENESS SPRAY FIRE, HIGH VENTILATION 3.6 LBF HALON 1301 = 8.0 LBF HFC-125 = 4.5 LBF CF3I POOL FIRE, HIGH VENTILATION 3.6 LBF HALON 1301 = 5.5 LBF HFC-125 International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 12

13 Analyzer Probes, Pool Analyzer Probes, Spray RESULTS TO DATE - CONCENTRATION EQUIVALENCE International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 13

14 International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 14

15 DISCUSS what work remains International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 15

16 TESTING REMAINING CF3I => high ventilation HFC-125 => spray & low ventilation CF3I => spray & low ventilation HFC-125 & CF3I cold agent proof tests COMPLETION => SUMMER 2004 International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 16 Click Here to End

17 REGION OF FLAME DURING FIRE TEST FWD UP RIGHT 3:00 UP 12:00 STA 502 STA DIMENSIONS ARE IN FEET UNLESS NOTED OTHERWISE LOOKING FWD GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK 5 13 International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 17

18 REGION OF FLAME DURING FIRE TEST FWD UP RIGHT 3:00 UP 12:00 STA 502 STA DIMENSIONS ARE IN FEET UNLESS NOTED OTHERWISE LOOKING FWD GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK 13 International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA SLIDE# 18

19 A Representation of a Typical Concentration Trace for a Mass Equivalent Amount of a Replacement Candidate at the Flame Front ~ Generating the Concentration Data Pool for the Replacement Candidate ~ EQUIVALENCE METHOD - CONCENTRATION SLIDE# 19 Volumetric Concentration Time (sec) 8% 9% 7% 6% 10% DURATIONS AT/ABOVE A GIVEN CONCENTRATION International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ USA


Download ppt "International Aircraft Systems Fire Protection Working Group Atlantic City, NJ USA5Nov2003 Federal Aviation Administration WJ Hughes Technical Center,"

Similar presentations


Ads by Google