ENS Event | |
|---|---|
05:00 Apr 16, 2004 | |
| Title | Part 21 Notification Due To Potential Cracking In B4C Hydrid Control Rods |
| Event Description | This issue concerns the potential for cracking in the tips of the Westinghouse designed B4C Hybrid Rod Cluster Control Assembly (RCCA) while in operation. Westinghouse supplied B4C Hybrid RCCAs are currently in use in the U.S. only at Tennessee Valley Authority's (TVA) Watts Bar Nuclear Plant.
Cracks in the hybrid RCCAs could result in a potential loss of B4C [a neutron absorber] from the RCCA if left uncorrected. Westinghouse will review and revise its guidelines on the use and expected life of B4C Hybrid RCCAs to assure that this information is accurately reflected and communicated to its customers. |
| Where | |
|---|---|
| Westinghouse Nuclear Services (NRC Region) | |
| Organization: | Westinghouse Nuclear Services |
| Reporting | |
| 10 CFR 21.21 | |
| Time - Person (Reporting Time:+5.23 h0.218 days <br />0.0311 weeks <br />0.00716 months <br />) | |
| Opened: | Jim Gresham 10:14 Apr 16, 2004 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Apr 16, 2004 |
| 40678 - NRC Website | |
Westinghouse Nuclear Services with 10 CFR 21.21 | |
WEEKMONTHYEARENS 406782004-04-16T05:00:00016 April 2004 05:00:00
[Table view]10 CFR 21.21 Part 21 Notification Due to Potential Cracking in B4C Hydrid Control Rods 2004-04-16T05:00:00 | |