Secondary Protection for 70 MPa Fueling - A White Paper from the Hydrogen Safety Panel

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In developing a 70 megapascal (MPa) fueling infrastructure, it is critical to ensure that a vehicle equipped with a lower service pressure fuel tank is never filled from a 70 MPa fueling source. Filling of a lower service pressure vehicle at a 70 MPa fueling source is likely to result in a catastrophic event with severe injuries or fatalities. The Hydrogen Safety Panel recommends that DOE undertake a two‐step process to address this issue: 1. Perform an independent risk analysis of a 70MPa dispenser filling a lower pressure vehicle tank and develop different approaches for prevention and mitigation to meet ... continued below

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Weiner, Steven C. & Kallman, Richard A. July 6, 2009.

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In developing a 70 megapascal (MPa) fueling infrastructure, it is critical to ensure that a vehicle equipped with a lower service pressure fuel tank is never filled from a 70 MPa fueling source. Filling of a lower service pressure vehicle at a 70 MPa fueling source is likely to result in a catastrophic event with severe injuries or fatalities. The Hydrogen Safety Panel recommends that DOE undertake a two‐step process to address this issue: 1. Perform an independent risk analysis of a 70MPa dispenser filling a lower pressure vehicle tank and develop different approaches for prevention and mitigation to meet an acceptable level of safety. Cost effectiveness, reliability, advantages and disadvantages are among the factors that should be evaluated for each approach considered. 2. Until such time as this analysis is complete and any recommended actions implemented, communicate the potential risk to responsible parties and strongly encourage those parties to add a secondary layer of protection to the existing system of mechanically non‐interchangeable nozzles/receptacles. This will reduce the probability of a pressure mismatch during this developmental phase for hydrogen fuel cell vehicles and infrastructure. This step can be reassessed after further analysis is completed and the need and effectiveness of secondary protection methods are evaluated. This paper provides background discussion of the problem, current safety systems and strategy and examples of potential future solutions to support the above recommendations.

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  • Report No.: PNNL-18523
  • Grant Number: AC05-76RL01830
  • DOI: 10.2172/1012309 | External Link
  • Office of Scientific & Technical Information Report Number: 1012309
  • Archival Resource Key: ark:/67531/metadc833184

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 6, 2009

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 1, 2016, 7:20 p.m.

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Weiner, Steven C. & Kallman, Richard A. Secondary Protection for 70 MPa Fueling - A White Paper from the Hydrogen Safety Panel, report, July 6, 2009; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc833184/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.