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Stratoflex Fire Resistance Testing of Aerospace Hose
Stratoflex Fire Resistance Testing of Aerospace Hose
This document, titled 'Fire Resistance Testing of Aerospace Hose,' is a technical guide provided by Parker Hannifin Corporation's Stratoflex Products Division. It outlines the standards, procedures, and specifications for fire resistance testing of aerospace hose assemblies.
The document emphasizes the importance of proper selection and use of Parker hoses and fittings to prevent potential hazards such as death, personal injury, and property damage. Users are advised to consult the Parker Safety Guide and conduct thorough analysis and testing to ensure compliance with performance and safety requirements.
Hose assemblies in fire zones must be equipped with firesleeves for protection. The document details various FAA Technical Standard Orders (TSOs) relevant to hose assemblies, including TSO-C42, TSO-C53a, and TSO-C75, which specify performance qualifications for different types of hose assemblies based on temperature and pressure requirements.
The document categorizes hose assemblies into non-fire resistant and fire resistant types, with further distinctions based on temperature and location (inside or outside fire zones). It also specifies the materials used, such as rubber, PTFE, and metal tubing, and their compatibility with synthetic or petroleum-based fluids.
Fire protection is classified as 'fire resistant' (5-minute exposure) or 'fireproof' (15-minute exposure), with specific requirements for duration and fluid flow rate during testing. The document references FAA Advisory Circular AC20-135 for additional guidance on fire protection test methods and criteria.
The document lists current Stratoflex DOT-FAA TSO approvals for various hose assemblies, indicating the applicable TSO, type, size, and any special remarks. It also notes that a new TSO is expected to address existing ambiguities and improve performance descriptions.
Stratoflex offers an integral silicone firesleeve as an alternative to traditional firesleeves, with designations 'H' or 'J' indicating fireproof and fire resistant capabilities, respectively. Users are advised to confirm the qualification status for each hose type and size with Stratoflex Customer Service.
This document serves as a comprehensive guide for aerospace hose fire resistance testing, providing essential information on standards, approvals, and best practices to ensure safety and compliance in aerospace applications.
The guide outlines the scope of the document, emphasizing the need for fail-safe design in systems using hoses and fittings. It stresses user responsibility in making final product selections and ensuring safety and compatibility with specific applications.
Key considerations include electrical conductivity, pressure, suction, temperature, fluid compatibility, size and routing, and environment and mechanical loads.
This section provides detailed instructions on pre-installation checks, proper assembly techniques, and ensuring no twist or torque is applied during installation. It also covers the importance of using only authorized Parker components and tools for assembly.
The document emphasizes adherence to government, industry, and Parker specifications and standards to ensure safety and performance.
Proper installation involves avoiding tensile loads, side loads, kinking, flattening, abrasion, and thread damage. Air entrapment must be eliminated, and the system should be pressurized to check for leaks. Hoses should be routed to prevent contact with hot surfaces or sparks in case of failure.
Regular inspection is crucial to prevent hose failure. Conditions requiring immediate shutdown and replacement include fitting slippage, damaged covers, leaks, and system malfunctions. An inspection program should be established, considering the severity of the application and risk potential.
Hydraulic systems use high-pressure fluids, which can be dangerous. Users should never attempt to locate leaks by touch, as high-pressure fluids can penetrate the skin and cause severe injuries. In case of hose failure, equipment should be shut down, and pressure should be completely released before examination.
If a hose fails, it must be replaced, not repaired. Pressure should be reduced to zero before examining the hose assembly. Special care is needed when working with gaseous systems due to the risk of over-pressure and sudden gas escape.
For hose assembly replacement information, consult Parker Hannifin Corporation's Stratoflex Products Division.
Catalog excerpts
Fire ResistanceTesting ofAerospace Hose Catalog 106-FRJune 2001 >
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(SUBJECTTO REVISION - SEE IB1034) GENERAL FIRE PROTECTION REQUIREMENTS Hose assemblies located partially or totally inFire ZonesӔmust be firesleeved.Stratoflex 2650, silicone coveredfiberglass (AS1072,Type 2) or integral extruded (molded) silicone (code H or J and 101 hose) firesleeve provide fire protection.FAATechnical Standard Orders (TSO) are the performance qualification standards for aircraft parts, materials, etc.Those that apply to hose assemblies are summarized below.A listing of currentTSO approvals for Stratoflex hose assemblies is contained in Information Bulletin 1030.The title of...
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CAUTION:Always confirm.Subject to revision without notice. NOTES:1.All SPD hose assemblies of aboveCatalogӔtypes (includingAXXXӔassemblies using the same fittingattachment) fabricated by factory or authorized Distributor may be marked with the notedTSO marking, see HOSE000;e.g.124000, etc.If customer does not specify whichTSO applies, mark all that are applicable.2.Authorized FAATSO Distributors are listed in QCS-133.3.All currentTSO fire resistant tests are five (5) minute minimum duration.For special cases see Information Bulletin1031,1034 and 1035 or contact SPD Engineering.The newTSO will...
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(SUBJECTTO REVISION - SEE IB1032) Stratoflex offers, as an alternative to 2650 (AS1072) type firesleeve, integral fire protection in the form of an extrudedsilicone cover.The designationHӔorJӔ(or 101 style hose assemblies) signifies the cover both in bulk hose (124- XXJ) and hose assembly (124HXXX).These designations were chosen as they are the designations for integral silicone firesleeve specified/defined in SAEHose Assembly Standards such as AS115 (171_141).In this context they were intended to specify:15 minute, fire proof (H);and 5 minute, fire resistant (J).DO NOT ASSUMETHIS RELATIONSHIP...
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3.10 External Damage:3.11 System Checkout: 3.12 Routing:4.0 HOSE AND FITTING INSPECTION INSTRUCTIONS4.14.2Visual Inspection Hose/Fitting: 4.3Visual Inspection All Other:4.4 FunctionalTest:4.5 Replacement Intervals: 4.6 Inspecting a Pressurized System: 4.7 Gases: 2.14 Specifications and Standards:2.15 Hose Cleanliness:2.16 Fire Resistant Fluids:2.17 Radiant Heat:2.18Welding or Brazing:2.19 Atomic Radiation:3.0 HOSE AND FITTING ASSEMBLY AND INSTALLATIONINSTRUCTIONS3.1 Pre-Installation and Periodic Inspection:3.2 Hose and Fitting Assembly: 3.3 Related Accessories:3.4 Parts:3.5 Reusable/Permanent:3.6...
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Parker Hannifin Corporation Stratoflex Products Division FortWorth,Texas >
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Parker Hannifin Corporation Stratoflex Products Division FortWorth,Texas >
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Stratoflex Products Division, Website:www.parker.com/ Stratoflex Products Division Couplings Business UnitParker Hannifin CorporationPhone:(805) 484-8533Fax:(805) 987-8958stratoflex Parker Hannifin Corporation 220 Roberts Cut-Off Road FortWorth,Texas 76114 U.S.A. Phone:(817) 738-6543 Fax:(817) 738-9920 >
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