LESSONS
LEARNED
Disclaimer: The Lessons Learned Database includes the incidents that were voluntarily submitted. The database is not a comprehensive source for all incidents that have occurred.

Contributing Factors

Any

Damage and Injuries

Lost Time Injury, Minor Injury

Equipment

Any

Probable Cause

Any

Contributing Factors

Any

Damage and Injuries

Lost Time Injury, Minor Injury

Equipment

Any

Probable Cause

Any

CHECK OUT OUR MOST RELEVANT INCIDENT LISTINGS!

Disclaimer: The Lessons Learned Database includes the incidents that were voluntarily submitted. The database is not a comprehensive source for all incidents that have occurred.

H2 Lessons Learned

H2 Analytics

Lessons Learned Corner

Hydrogen Prototype Bus Slips off Jack Stand

This event illustrates the importance of adequately planning and communicating work. Procedures should cover all types of equipment that will be utilized. Work packages should clearly describe the equipment that will be used and the surrounding…

Hole In Ampoule Leads to Explosion
  • Metal hydride materials of a composition which is not well characterized should be handled with procedures that assume a "worst case" for that class of materials, intermediates or precursors.
  • Laboratory procedures should be in…
Hole In Ampoule Leads to Explosion
  • Metal hydride materials of a composition which is not well characterized should be handled with procedures that assume a "worst case" for that class of materials, intermediates or precursors.
  • Laboratory procedures should be in…
Hydrogen Explosion in Microbiological Anaerobic Chamber

The practice of making gas mixtures in the laboratory should be eliminated, and gas mixtures with a known low hydrogen concentration should be purchased for use. The concentration of hydrogen used should be such that it is not possible to form an…

Explosion of an Oven that was Heating Decaborane for Vaporization

After this accident, a safety inspection team was organized. An investigation of this incident and an inspection of all other experimental equipment was conducted by the team. As a result of this inspection, the heaters are now hard-wired to the…

Hydrogen Lab Fire
  1. Test safety system components even if they are new.
  2. Do not rely on listening for valve movement as confirmation that a valve is closing; measure downstream pressure to determine if the valve is really sealing properly.
  3. …

Key:

  • = No Ignition
  • = Explosion
  • = Fire
Hydrogen Incident Summaries by Equipment and Primary Cause/Issue
Equipment / CauseEquipment Design or SelectionComponent FailureOperational ErrorInstallation or MaintenanceInadequate Gas or Flame DetectionEmergency Shutdown ResponseOther or Unknown
Hydrogen Gas Metal Cylinder or Regulator 3/31/2012
4/30/1995
2/6/2013		4/26/201012/31/1969  3/17/1999
11/1/2001
12/23/2003
Piping/Valves4/4/2002
2/2/2008
5/11/1999		4/20/1987
11/4/1997
12/31/1969
8/19/1986
7/27/1991
12/19/2004
2/6/2008
10/3/2008
4/5/2006
5/1/2007
9/19/2007
10/31/1980		2/7/20091/24/1999
2/24/2006
6/8/1998
12/31/1969
2/7/2009		9/1/1992
10/31/1980		10/3/2008 
Tubing/Fittings/Hose 9/23/1999
8/2/2004
8/6/2008
9/19/2007		1/1/19829/30/2004
10/7/2005		 10/7/2005 
Compressor 10/5/2009
6/10/2007
8/21/2008
1/15/2019		  10/5/20098/21/2008 
Liquid Hydrogen Tank or Delivery Truck4/27/198912/19/2004
1/19/2009		8/6/200412/31/1969 1/1/197412/17/2004
Pressure Relief Device7/25/2013
5/4/2012		1/15/2002
1/08/2007		12/31/1969    
Instrument1/15/20193/17/1999
12/31/1969
2/6/2013		  11/13/73  
Hydrogen Generation Equipment7/27/1999  10/23/2001   
Vehicle or Lift Truck 7/21/2011    2/8/2011
12/9/2010
Fuel Dispenser 8/2/2004
5/1/2007
6/11/2007
9/19/2007		 2/24/2006
1/22/2009		   
Fuel Cell Stack      5/3/2004
12/9/2010
2/8/2011
Hydrogen Cooled Generator   12/31/1969
2/7/2009		   
Other (floor drain, lab
anaerobic chamber,
heated glassware,
test chamber,
gaseous hydrogen
composite cylinder,
delivery truck)		 11/14/1994
7/21/2011		7/27/1999
6/28/2010
8/21/2008		12/31/1969
3/22/2018		  6/10/2019
  • = No Ignition
  • = Explosion
  • = Fire

This material was prepared as an account of work sponsored by an agency of the United States Government.
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