Hydrogen Storage -Ammonia Borane (AB) Loaded onto Mesoporous Carbon

First Name
Andy
Last Name
Piatt

During preparation of a new hydrogen storage material, ammonia borane (AB) loaded onto mesoporous carbon, an unexpected incident was observed. As with all procedures with new materials the work is conducted on a small scale and in a laboratory fume hood. They followed the procedures that they had used for absorption of ammonia borane onto mesoporous silica without incident.

Small Electrical Fire Resulting from Improper Equipment Configuration

First Name
Andy
Last Name
Piatt

An employee noticed an unusual smell in a fuel cell laboratory. A shunt inside experimental equipment overheated and caused insulation on conductors to burn. Flames were approximately one inch high and very localized. The employee de-energized equipment and blew out the flames. No combustible material was in the vicinity of the experiment. The fire was contained within the fuel cell and resulted in no damage to equipment.

Hydrogen Explosion in Microbiological Anaerobic Chamber

First Name
Andy
Last Name
Piatt

An explosion occurred in a Microbiological Anaerobic Chamber of approximately 2 m3 capacity that contained an explosive mixture of hydrogen and air. A fire followed the explosion, but was rapidly extinguished by staff using fire extinguishers prior to the arrival of fire service personnel. The pressure wave from the explosion blew windows out of the laboratory, with glass hitting a passerby on a path outside and glass shards landing up to 30 m away.

Hydrogen Purge Frequency Exceeded in Vessel

First Name
Andy
Last Name
Piatt

An operator went to purge a process tank per standard operating procedure. The operator reviewed the previous shift's purge time and determined the next required purge time. The operator found that the tank had been purged earlier than expected on the previous shift. Because the earlier purge time was not recognized, the 12-hour purge frequency was exceeded.

Non-Sparking Tools Used for Intrusive Work

First Name
Andy
Last Name
Piatt

A facility representative observed pipe-fitters enter a containment tent around a riser with a tool bag that contained a mixture of steel and copper/beryllium tools. The top flange was loosened using a copper/beryllium socket and a steel torque wrench. When questioned, the pipe-fitters correctly stated that this was allowable for initial loosening and tightening of these bolts. A copper/beryllium ratchet was used to accomplish the bolt removal. The bonded riser was shifted to allow access for the IH technician.

Saltwell Pump May Have Been Operated While the Standard Hydrogen Monitoring System was Not in Operational Mode

First Name
Andy
Last Name
Piatt

One morning a saltwell pump was placed in operation. Operation of this equipment requires that the Standard Hydrogen Monitoring System (SHMS) cabinet be in operation. Later that morning, during the morning surveillance rounds, the Standard Hydrogen Monitoring System (SHMS) cabinet was found not to be in the operational mode.

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