The following corrective actions have been taken:

• The non-return valve was dismantled, cleaned, and tested. Following positive testing, the system was restarted and pressurized without any further malfunctioning.
• The hydrogen…

All safety devices worked as designed thereby protecting the environment and laboratory personnel. Researchers involved in the experiment acted properly and with the parameters set forth in operational procedures.

Follow up: Stops have…

Cause and effect can sometimes be predicted by observing abnormal behavior even when the behavior is within specifications. Operators log equipment data and inform shift management when specifications are exceeded or when unusual equipment…

1. Parallel-path design activities require an increased level of management oversight and control to mitigate the risks inherent in this process.
2. Schedule pressure cannot be allowed to compromise the integrity of the design process…

This incident highlights the need to ensure that the performance of special procedures does not place facility equipment in a condition that could lead to entry into a LCO.

This incident occurred due to moisture in the sample line monitoring system. Removing moisture from the sample line increases the reliability of the equipment. Further evaluations are being considered for improving system reliability.

Utilize a Six Sigma Black Belt to statistically evaluate LFL monitor reliability and determine the failure rate based on the existing technology.

Revise the tank uncertainty calculation and surveillance to include a wider "Required…

Frequently inspect and maintain all elements of hydrogen-related systems.

1. Redundant safety systems prevented this event from becoming an incident. The 1%-hydrogen-concentration-level-triggered fan was backed up by a 2%-hydrogen-concentration alarm. The alarm is continuously monitored (24/7) by a remote Network…