Incorrect Installation of Replacement Valve Handle

Image for Incorrect Installation of Replacement Valve Handle

Type:  Lessons Learned

Publisher:  Savannah River Nuclear Solutions - SRNS, Savannah River Site (SRNS)

Published As:  Public


Topics:  Operations, Maintenance, Glovebox & Containment Systems

Operations personnel prepared to make a transfer of recirculated flush material from NT-51 to H-Canyon. The transfer sequence was started and operators at the glovebox observed the pump starting and the discharge hose was moving fast and then started to expand. The Operators requested to stop the transfer and the Control Room Operator stopped the transfer sequence. The hose ruptured and approximately 2 liters of liquid was collected in the glovebox sump.

It was determined that the replacement handle was installed 90 degrees out of position; this was caused by incorrect alignment of the set screw on the valve stem. Later, personnel believed the valve was open when it was actually closed.

You must be logged in to open the attachment.

Download Article
Comments about this Article
You must be logged in to add or view comments.
Related Articles
Feedback Form
How did you apply this information?
You must be logged in to use this feature
Is this article applicable to your organization?