ENS 40200

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v t e ENS Event
12:50 Sep 26, 2003
Title	Greater than 1 Percent of Steam Generators 1,2 & 4 Tubes Inspected Indicate That the Inspected Tubes Require Plugging.
Event Description	At 0850 EST on September 26, 2003, with Watts Bar Nuclear Plant Unit 1 defueled, steam generator inspections were being performed in accordance with Technical Specification (TS) 5.7.2.12, 'Steam Generator Tube Surveillance Program.' The results of the inspections performed on Steam Generator Numbers 1, 2, and 4 indicated that greater than 1% of the inspected tubes require repair. Based on TS 5.7.2.12, this determination results in the classification of C-3. The current inspection results do not meet the criteria specified for steam generator tube degradation in Revision 2 of NUREG 1022, Event Reporting Guidelines 10 CFR 50.72 and 10 CFR 50.73. However, for classification C-3, WBN TS Table 5.7.2.12-1, 'SG Tube Inspection Supplemental Sampling Requirements, 'requires that the results of the inspection be reported under 10 CFR 50.72. At this time, the submittal of the Licensee Event Report in accordance with 10 CFR 50.73 is not planned. The NRC Resident Inspector was notified of this event by the licensee. Update on 09/29/03 at 1439 EDT by John Roden taken by MacKinnon **** In addition, at 0800 on September 29, 2003 Steam Generator Number 3 has been determined to be in the classification of C-3 (48 tubes). The current inspection results do not meet the criteria specified for team generator tube degradation in Revision 2 of NUREG 1022, Event Reporting Guidelines 10 CFR 50.72 and 10 CFR 50.73. However, for classification C-3, WBN TS Table 5.7.2.12-1, 'SG Tube Inspection Supplemental Sampling Requirements,' requires that the results of the inspection be reported under 10 CFR 50.72. At this time, the submittal of a Licensee Event Report in accordance with 10 CFR 50.73 is not planned." R2DO (Mark Lesser) notified. The NRC Resident Inspector was notified of this update by the licensee.

ENS 40200 +/-
Where
Watts Bar Tennessee (NRC Region 2)
Reporting

Other Unspec Reqmnt
Time - Person (Reporting Time:+3.68 h0.153 days <br />0.0219 weeks <br />0.00504 months <br />)
Opened:	John Roden 16:31 Sep 26, 2003
NRC Officer:	John Mackinnon
Last Updated:	Sep 29, 2003
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v • d • e

v t e Emergency Notification System
Watts Bar with Other Unspec Reqmnt
WEEKMONTHYEAR2012-01-17T22:46:00 [Table view]
[ENS list for Watts Bar]

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