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Guide for Hydrogen Hazards Analysis on Components and SystemsThe physical and combustion properties of hydrogen give rise to hazards that must be considered when designing and operating a hydrogen system. One of the major concerns in the use of hydrogen is that of fire or detonation because of hydrogen's wide flammability range, low ignition energy, and flame speed. Other concerns include the contact and interaction of hydrogen with materials, such as the hydrogen embrittlement of materials and the formation of hydrogen hydrides. The low temperature of liquid and slush hydrogen bring other concerns related to material compatibility and pressure control; this is especially important when dissimilar, adjoining materials are involved. The potential hazards arising from these properties and design features necessitate a proper hydrogen hazards analysis before introducing a material, component, or system into hydrogen service. The objective of this guide is to describe the NASA Johnson Space Center White Sands Test Facility hydrogen hazards analysis method that should be performed before hydrogen is used in components and/or systems. The method is consistent with standard practices for analyzing hazards. It is recommended that this analysis be made before implementing a hydrogen component qualification procedure. A hydrogen hazards analysis is a useful tool for hydrogen-system designers, system and safety engineers, and facility managers. A hydrogen hazards analysis can identify problem areas before hydrogen is introduced into a system-preventing damage to hardware, delay or loss of mission or objective, and possible injury or loss of life.
Document ID
Acquisition Source
Johnson Space Center
Document Type
Technical Memorandum (TM)
Beeson, Harold
(White Sands Test Facility Las Cruces, NM, United States)
Woods, Stephen
(Honeywell Technology Solutions, Inc. Las Cruces, NM, United States)
Date Acquired
September 7, 2013
Publication Date
October 1, 2003
Subject Category
Propellants And Fuels
Report/Patent Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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