Severity
Incident
Was Hydrogen Released?
Yes
Was There Ignition?
No
Describe the incident, including corrective steps taken and their result.
A sulfur deprivation test was conducted in a sealed 250 ml vessel. More hydrogen was generated in this process than was anticipated, and the vessel cracked.
Lessons Learned
Now, when conducting a sulfur deprivation test, vessels are ventilated to prevent over pressurization and safely facilitate the release of excess hydrogen.