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Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center

International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003. Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA. Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center.

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Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center

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  1. International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 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 08405 USA tel: 609-485-4945 fax: 609-485-7074 email: Douglas.A.Ingerson@faa.gov 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 USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 2

  3. briefly EXPLAIN the equivalence process International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 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 USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 4

  5. CONCENTRATION TEST FIRE TEST 6% Volumetric Concentration ESTABLISH BENCHMARK for HALON 1301 RTD(ave, H1301) certification Time (sec) Halon 1301 Replacement Candidate CONCENTRATION TEST FIRE TEST CEQUIV FIND MASS EQUIVALENT OF THE REPLACEMENT CANDIDATE RTD(ave, rep.can)  RTD(ave, H1301) Volumetric Concentration “certification” Time (sec) Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Analyzer Probes, Certification SLIDE# 5

  6. EXPLAIN the equivalent mass and concentration methods International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 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 USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 7

  8. EQUIVALENCE METHOD - CONCENTRATION A Representation of Typical Concentration Traces for Halon 1301 and a Mass Equivalent Amount of a Replacement Candidate at the Flame Front Halon 1301 • 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. Replacement Candidate 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 (CEQUIV). t H1301 CEQUIV International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 6% certification 6% Concentration Equivalence Step #1 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA Establish the duration that the Halon 1301 concentration at the flame front is at/above 6% v/v. t H1301 Volumetric Concentration SLIDE# 8 Time (sec)

  9. International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA • 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 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 USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 10

  11. ILLUSTRATE results to date International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 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 USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 12

  13. RESULTS TO DATE - CONCENTRATION EQUIVALENCE International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA Analyzer Probes, Pool Analyzer Probes, Spray SLIDE# 13

  14. International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 14

  15. DISCUSS what work remains International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 15

  16. TESTING REMAINING • CF3I => pool @ high ventilation • HFC-125 => spray & pool @ low ventilation • CF3I => spray & pool @ low ventilation • HFC-125 & CF3I cold agent proof tests • COMPLETION => SUMMER 2004 International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA Click Here to End SLIDE# 16

  17. GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK REGION OF FLAME DURING FIRE TEST UP STA 502 STA 527 FWD 11 10 1 2 4 12 9 3 UP 12:00 7 5 LOOKING FWD DIMENSIONS ARE IN FEET UNLESS NOTED OTHERWISE RIGHT 3:00 8 6 International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 17 5 13

  18. GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK REGION OF FLAME DURING FIRE TEST UP STA 502 STA 527 FWD 11 10 12 4 2 1 9 3 UP 12:00 LOOKING FWD 5 DIMENSIONS ARE IN FEET UNLESS NOTED OTHERWISE 7 RIGHT 3:00 8 6 International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 18 13

  19. EQUIVALENCE METHOD - CONCENTRATION 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 ~ 8% 9% 7% 6% 10% Volumetric Concentration Time (sec) DURATIONS AT/ABOVE A GIVEN CONCENTRATION International Aircraft Systems Fire Protection Working Group Atlantic City , NJ USA 5Nov2003 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-440 Atlantic City Int'l Airport, NJ 08405 USA SLIDE# 19

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