Excessive Control Rod Guide Tube Wear (Generic Letter 78-26)
GL 78-26
UNITED STATES
NUCLEAR REGULATORY COMMISSION
WASHINGTON, D.C. 20555
July 13, 1978
LTRS ADDRESSED TO LICENSEES
(ALL B&W PLANTS IN ORB #4:DOR)
Gentlemen:
RE:
We have recently sent the enclosed letter to Babcock & Wilcox Company
regarding the potential for excessive control rod guide tube wear at
facilities using the B&W design. This information is required to assess the
significance of control rod guide tube wear at your facility.
We requested the required information from the vendor, in order to provide us
with an overall assessment of this problem and to minimize the amount of
utility, vendor and NRC staff work required. However, should this approach to
obtain the necessary information not be successful, a direct response to the
enclosed questions, from each licensee utilizing the B&W design, will be
required.
We request your cooperation with B&W in generating and analyzing the control
rod guide tube wear data necessary to address this concern.
Sincerely,
Brian K Grimes, Assistant Director
for Engineering and Projects
Division of Operating Reactors
Enclosure:
Letter to B&W dated June 13, 1978
Page Last Reviewed/Updated Tuesday, March 09, 2021