Review of Operating Experience Results in Process Improvement

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Type:  Success Story

Publisher:  Idaho National Laboratory, Idaho Falls, ID

Published As:  Public


Topics:  Operations

In preparation for an upcoming core internals change out outage at the Advanced Test Reactor, a team of personnel reviewed past core internal change out reports for information to improve performance. During this review, it was noted that the tool used for removing the right hand beryllium blocks was very difficult to set up and operate. In Addition, it was discovered that the right hand removal tool was missing, so the left hand tool's top plate was being flipped over, and the cylinders were being rotated 180 degrees, in an attempt to create the right hand removal tool. Past reports indicated that the right hand removal tool configuration had difficulties engaging the beryllium block during use. Based on this issue, a team built a mockup of a beryllium block and looked at all possible interferences. The team discovered that flipping the left top plate over and rotating the cylinders would not get the desired engagement, and only one specific orientation gave the desired engagement. From this mockup and analysis, the team designed, built, and tested new beryllium handling tools for beryllium block removal and installation. The time spent to discover the extent of the issues that past teams had experienced, resulted in the development of new tools that provided a safer, more efficient way to do the work.

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