# Presentation: 438683

## Engine Nacelle Halon Replacement,FAA, WJ Hughes Technical Center

- 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/_

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## CONTENTS

- briefly EXPLAIN the equivalence process
- EXPLAIN the equivalent mass and concentration methods
- ILLUSTRATE results to date - mass/concentration equivalence
- DISCUSS what work remains

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- briefly EXPLAIN the equivalence process

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## 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

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- Analyzer
- Probes,
- Certification

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## EXPLAIN the equivalent mass and concentration methods

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## 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

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- 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)

- EQUIVALENCE METHOD - CONCENTRATION

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## 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

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## ILLUSTRATE results to date

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## 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

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## RESULTS TO DATE - CONCENTRATION EQUIVALENCE

- Analyzer
- Probes,
- Pool

- Analyzer
- Probes,
- Spray

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## DISCUSS what work remains

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## 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**_

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- Click Here to End

## 5

- GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK

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**13**

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## 13

- GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK

**13**

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- ~ Generating the Concentration Data Pool for the Replacement Candidate ~

- EQUIVALENCE METHOD - CONCENTRATION

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