Evaluation of Barrier Walls for Mitigation of Unintended Releases of Hydrogen
William Houf, Sandia National Laboratories

Safety, Codes & Standards Workshop Draws over 100 - Workshop Proceedings
Karen Hall, National Hydrogen Association

National Hydrogen and Fuel Cells Codes & Standards Coordinating Committee Teleconference - March 2009 Minutes
Chad Blake, NREL

Evaluation of Barrier Walls for Mitigation of Unintended Releases of Hydrogen
William Houf, Sandia National Laboritories

The development and commercial use of hydrogen will require safety guidelines for building vehicle fueling stations, storage facilities, and other infrastructure components. If the development of these safety guidelines is to be made on a scientific basis, then validated engineering models of unintended hydrogen releases are needed for scenario and risk analysis.

William Houf made a presentation at on this topic at the NHA Hydrogen Conference and Expo 2009, in Columbia, SC, and has kindly given permission for the NHA to reprint it here:

• Evaluation of Barrier Walls for Mitigation of Unintended Releases of Hydrogen (4,458Kb PDF)

Safety, Codes & Standards Workshop Draws over 100 - Workshop Proceedings
Karen Hall, National Hydrogen Association

On Monday, March 30, over 100 people turned up in Columbia, SC to attend the NHA Safety, Codes and Standards Workshop: Tackling Challenges to Implementation of Hydrogen Energy Systems. Participants had a chance to hear about the latest thinking and advances on three key topic areas:

• Leak Detection - Odorization and Sensors
• Separation Distances - gaseous and liquid hydrogen
• Indoor Operations and Fueling

The NHA wishes to thank all those who participated, and the U.S. Department of Energy for their generous sponsorship of the workshop.

- PROCEEDINGS-
Safety, Codes & Standards Workshop: Tackling Challenges to Implementation of Hydrogen Energy Systems
Click on the links below to download available presentations.

1. Introduction (9 – 9:15 am)
   Karen Hall, NHA Vice President for Technical Operations


2. Odorants and Sensors (9:15 – 10:30 am)
   Chair: Bob Boyd – The Linde Group
    
   • Development and Compliance to Hydrogen Sensor Codes and Standards
     Primary Author: William Buttner, Ph.D. - Senior Scientist I, National Renewable Energy Laboratory
     Co-Author: Robert Burgess - Senior Engineer, National Renewable Energy Laboratory
     Co-Author: Matthew Post - Senior Research Technician, National Renewable Energy Laboratory
   
   
   • Odorization of Hydrogen for Fuel Leak Detection
     Primary Author: Michael Sprague - Managing Partner, Enersol Inc., N.A., L.P.
     Co-Author: Patrick Flynn - Managing Partner, Enersol Inc., N.A., L.P.
   
   
   • Uncertainty Associated with Hydrogen Detection Instruments
     Primary Author: D. Allan Coutts - Washington Safety Management Solutions LLC
     Co-Author: David E. Fauerby - Washington Safety Management Solutions LLC 
   
   
   • Wide Range Hydrogen Specific Sensors for Industrial Safety
     Primary Author: Prabhu Soundarrajan, H2Scan Corporation
     Presented by Steve Hoviss, H2Scan
3. Coffee/Tea Break (10:30 – 10:45 am)


4. Separation Distances (10:45 am – 11:45 pm)
   Chair: Karen Hall, NHA 
    
   • Evaluation of Barrier Walls for Mitigation of Unintended Releases of Hydrogen
     Primary Author: William Houf, Ph.D. - Principal Member of Technical Staff, Sandia National Laboratories
     Co-Author: Robert Schefer, Ph.D. - Principal Member of Technical Staff, Sandia National Laboratories
     Co-Author: Gregory Evans, Ph.D. - Principal Member of Technical Staff, Sandia National Laboratories
   
   
   • Results from an Analytical Investigation of Small-Scale Releases from Liquid Hydrogen Storage Systems
     Primary Author: William Winters, Ph.D. - Senior Member Technical Staff, Sandia National Laboratories
     Co-Author: William Houf, Ph.D. - Principal Member of Technical Staff, Sandia National Laboratories
   
    
5. Indoor Fueling (11:45 am – 12:45 pm)
   Chair: Antonio Ruiz, US Department of Energy
    
   • Code Compliance Analysis for Indoor Hydrogen Fueling
     Primary Author: Carl Rivkin - Senior Project Leader II, National Renewable Energy Laboratory
   
   
   • Linde Fueling Protocol for Indoor Fueling of Fork Lift Fleets Fueling Inside Large Warehouse Distribution Centers
     Primary Author: Mike Ciotti – The Linde Group
   
   
   • Safety Features of Indoor Fueling 
     Primary Author: Dave Farese, Energy Manager, Hydrogen Energy Systems, Air Products & Chemicals
   
    
6. Closing Remarks (12:45 – 1:00 pm)
   Karen Hall, NHA Vice President for Technical Operations