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Halon Replacement for Airplane Cargo Compartments What it Takes

Halon Replacement for Airplane Cargo Compartments What it Takes. Fourth Triennial International Fire and Cabin Safety Research Conference Lisbon, Portugal November 17, 2004 Daniel Lewinski The Boeing Company. Cargo Fire Suppression Halon Replacement. Objective Overview

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Halon Replacement for Airplane Cargo Compartments What it Takes

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  1. Halon Replacement for Airplane Cargo CompartmentsWhat it Takes Fourth Triennial International Fire and Cabin Safety Research Conference Lisbon, Portugal November 17, 2004 Daniel Lewinski The Boeing Company

  2. Cargo Fire SuppressionHalon Replacement • Objective • Overview • Typical Halon System • Strategies • Alternative Agent/System Summary • Requirements • Agent • Regulatory • System • Component • Maintenance • Conclusion

  3. Cargo Fire SuppressionHalon Replacement • Objective: Provide a comprehensive overview of the challenges for installing and certifying a safe, reliable, and economic cargo fire suppression system onto a large commercial airplane.

  4. Cargo Fire SuppressionHalon Replacement Overview • Halon Production Ceased in 1994 • Critical Use Exemption only for Halon use • Technical and Regulatory Challenges for finding cargo fire suppression replacement agent. • Agent Performance • Regulatory Requirements • System Design and Performance

  5. Cargo Fire SuppressionTypical Airplane Cargo Fire Suppression System

  6. Cargo Fire SuppressionSystem RequirementsTypical Decay Analysis

  7. Halon Replacement Strategy forCargo Fire Suppression Systems • Drop-in Replacement • Phased Development with Agent and Systems Manufacturers

  8. Phased Request for Information from Industry on Halon Replacement Phase 1 - Request for Industry Proposals on Halon Replacement Agents for Airplane Fire Protection Systems Phase 2 - Request for Industry Proposals on How a Halon Replacement Agent and System would be installed onto an airplane. Phase 3 - Request for Industry to show agents would extinguish cargo fire threats through proof-of-concept tests.

  9. Table 1 - Cargo Fire Suppression - Halon AlternativesAgent Type MPS Status Technical Issues

  10. Table 1 - Cargo Fire Suppression - Halon AlternativesAgent Type MPS Status Technical Issues

  11. Cargo Fire Suppression Halon ReplacementAgent Requirements • Minimum Performance Standard • Bulk-Load Fire • Containerized Fire • Surface Burning Fire • Aerosol Can Explosion • Short Version • Long Version

  12. Cargo Fire Suppression Halon Replacement Agent Requirements • SNAP Approved • Corrosion Resistant • Health and Safety • Toxicity • Other

  13. Cargo Fire Suppression Halon Replacement Regulatory Requirements • FARs, JARs, and Certification Specifications • Specific Regulations • FAR/JAR/CS 25.851 – System will be sized appropriately • FAR/JAR/CS 25.855 – Flight Tests to Show Performance • FAR/JAR/CS 25.857 – Approved Fire Suppression System • Other Non – System Specific Regulations • Advisory Circulars • AC 25.1309-1A – Systems Design • AC 120-42A - ETOPS

  14. Cargo Fire Suppression Halon ReplacementSystem Requirements • A Cargo Fire Suppression System Must • Provide a specific extinguishing agent quantity discharge for knockdown capability • Provide a minimum extinguishing agent concentration for a specified duration • Perform within parameters when exposed to life cycle and fatigue testing • Distribute agent within a cargo compartment • Control particle size distribution of a non-gaseous agent

  15. Cargo Fire Suppression Halon ReplacementSystem Requirements • System Test Demonstrations • Failure Modes and Effects Analysis • Safety Analysis Catastrophic Fire is Extremely Improbable • Flight Test Demonstrations • Component Qualifications

  16. Cargo Fire Suppression Halon ReplacementComponent Requirements • Environmental Requirements • Operating and Non-operating Environment Temperature Limits

  17. Cargo Fire Suppression Halon ReplacementComponent Requirements • Pressure Altitude Requirements • Structural • Shock and Handling • Vibration • Electrical • AC/DC Power Characteristics • Steady State and Transient Characteristics • Voltage Transients and Spikes • Electromagnetic Induction • Et al

  18. Cargo Fire Suppression Halon ReplacementComponent Requirements • BIT (Built In Test) • Software • Component Reliability

  19. Cargo Fire Suppression Halon ReplacementMaintenance Requirements • No predetermined (scheduled) maintenance intervals on components. • No piece parts or assemblies with definite life limits. • No on-airplane adjustments. • No more than one mechanic for on-airplane maintenance and servicing. • Only "common" tools for on-airplane maintenance.

  20. Cargo Fire Suppression Halon ReplacementConclusion • Identified Alternate Agents Need Development • Solution Requires Concerted Effort by • Regulatory Agencies • Agent Manufacturers • System Manufacturers • Airplane Manufacturers

  21. The Fourth Triennial International Aircraft Fire and Cabin Safety Research Conference The Fourth Triennial International Aircraft Fire and Cabin Safety Research Conference

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