David Seery is a lead engineer for
Control Systems at WesDyne Sweden AB.
In August, personnel from WesDyne Sweden AB,
along with colleagues from WesDyne International
LLC (both fully owned Westinghouse subsidiaries),
and Westinghouse Electric Company LLC, used specialized robots to inspect all required boiling water
reactor core shroud weld seams at the Kernkraftwerk
Mühleberg (KKM) Nuclear Power Plant in Mühleberg,
BY DAVID SEERY
collaboration between utility, WesDyne
and Westinghouse personnel to share
needed information, plan, design and
implement a solution to an access puzzle
that is both effective and economic.
During the 1990s, the weld seams of
some boiling water reactor core shrouds
were found to have intergranular stress
To successfully perform this inspection, the team used Wes-
Dyne’s T-crawler robot family, together with a novel time-saving
nondestructive testing solution. This solution contributed to
completing the work several hours ahead of the planned outage
window. This was the fourth such inspection the global team
has performed for KKM since 2011.
Meeting the inspection requirements for this core shroud’s
weld seams is an accomplishment that speaks to the
Technicians prepare to lower the original
design T-scanner manipulator at KKM.
The white floatation devices are carefully
designed to reduce the weight and tilting
forces once the T-scanner is submerged.