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Hydrogen Refueling Operational Error

Severity
Near-Miss
Was Hydrogen Released?
No
Was There Ignition?
No
Incident Attributes
Describe the incident, including corrective steps taken and their result.

Incident Synopsis
While transferring liquid H2 from a tanker, the burst disk ruptured at 50 psi. The pressure limit for the operation was 30 psi.

Cause
The operator turned on the pressure valve and left it unattended, permitting pressure buildup past the allowed 30 psi.

Lessons Learned

Refueling operations need to be conducted in a careful and attentive manner, and operators need to be aware of the potential consequences of their actions.

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
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