ENS Event | |
|---|---|
07:00 Oct 4, 2003 | |
| Title | Defects and Noncompliance Report |
| Event Description | GE Nuclear Energy provided information concerning a reportable condition on the stability Option III Period Based Detection Algorithm (PBDA) for the Oscillation Power Range Monitor (OPRM) installed at the affected Licensee plants listed below. The basic component with the defect is specification of the allowable values for the adjustable period confirmation variables in the PBDA used in Stability Option III. The defect is that certain values of period tolerance and conditioning filter cutoff frequency within the previously specified acceptable range could produce sufficient successive confirmation count resets such that Safety Limit Minimum Critical Power Ratio (SLMCPR) protection might not be provided for all anticipated reactor instabilities.
This condition does not produce a substantial safety hazard and there is no threat of fuel failure. However, because the condition could contribute to exceeding the SLMCPR, it is a reportable condition. List of Affected Plants: Clinton Brunswick 1 & 2 Nine Mile Point 2 Fermi 2 Columbia Dresden 2 & 3 LaSalle 1 & 2 Limerick 1 & 2 Peach Bottom 2 & 3 Quad Cities 1 & 2 Perry 1 Susquehanna 1 & 2 Hope Creek Hatch 1 & 2 Browns Ferry 2 & 3 |
| Where | |
|---|---|
| Ge Nuclear Energy San Jose, California (NRC Region 4) | |
| License number: | Various |
| Organization: | Ge Nuclear Energy |
| Reporting | |
| 10 CFR 21.21 | |
| Time - Person (Reporting Time:+11.45 h0.477 days <br />0.0682 weeks <br />0.0157 months <br />) | |
| Opened: | Jason Post 18:27 Oct 4, 2003 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Oct 4, 2003 |
| 40223 - NRC Website | |
Ge Nuclear Energy with 10 CFR 21.21 | |
WEEKMONTHYEARENS 402232003-10-04T07:00:0004 October 2003 07:00:00
[Table view]10 CFR 21.21 Defects and Noncompliance Report 2003-10-04T07:00:00 | |