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Unit 1 is currently in a refueling outage … Unit 1 is currently in a refueling outage in Mode 5. During a routine inservice inspection of the reactor vessel, an indication was discovered on the N1B penetration. This is associated with the suction for B Loop of Reactor Recirculation. At 0746 on 3/23/2004, the Control Room was notified that the evaluation was completed and the indication was determined to be unacceptable under the ASME Section XI Code. Based on guidance provided in NUREG-1022, Rev. 2, this material defect in the primary coolant boundary constitutes a seriously degraded condition and is reportable under 10CFR50.72(b)(3)(ii)(A). A final evaluation of the flaw and a repair plan is being developed.</br>The licensee informed the NRC Resident Inspector.</br>*****RETRACTED ON 4/29/04 AT1018 FROM HUFFORD TO LAURA*****</br>On March 23, 2004, PPL Susquehanna, LLC reported a material defect discovered on the N1B penetration associated with the suction for the B Loop of Reactor Recirculation. The defect was discovered during routine inservice inspection of the reactor vessel. At the time of the report, the indication was believed to exceed the acceptability standards of ASME Section XI, IWB-3640. Accordingly, an ENS call was made pursuant to the reporting requirements of 10CFR50.72(b)(3)(ii)(A). Engineering analysis subsequently determined that the dimensional characteristics of the flaw were within the acceptability requirements of ASME Section Xl. This analysis conclusion provides the basis for retraction of the ENS report of March 23.</br>Although hypothetical flaw growth calculations demonstrated that the flaw size would remain within the allowable envelope of ASME Section Xl, IWB-3641-1 over the next operating cycle, and continued operation without repair of the observed flaw was justified, PPL Susquehanna, LLC performed a weld repair of the defect during the recently completed refueling outage.</br>Notified the R1DO (R. Barkley)ing outage.
Notified the R1DO (R. Barkley) +
12:46:00, 23 March 2004 +
40,605 +
11:00:00, 23 March 2004 +
12:46:00, 23 March 2004 +
Unit 1 is currently in a refueling outage … Unit 1 is currently in a refueling outage in Mode 5. During a routine inservice inspection of the reactor vessel, an indication was discovered on the N1B penetration. This is associated with the suction for B Loop of Reactor Recirculation. At 0746 on 3/23/2004, the Control Room was notified that the evaluation was completed and the indication was determined to be unacceptable under the ASME Section XI Code. Based on guidance provided in NUREG-1022, Rev. 2, this material defect in the primary coolant boundary constitutes a seriously degraded condition and is reportable under 10CFR50.72(b)(3)(ii)(A). A final evaluation of the flaw and a repair plan is being developed.</br>The licensee informed the NRC Resident Inspector.</br>*****RETRACTED ON 4/29/04 AT1018 FROM HUFFORD TO LAURA*****</br>On March 23, 2004, PPL Susquehanna, LLC reported a material defect discovered on the N1B penetration associated with the suction for the B Loop of Reactor Recirculation. The defect was discovered during routine inservice inspection of the reactor vessel. At the time of the report, the indication was believed to exceed the acceptability standards of ASME Section XI, IWB-3640. Accordingly, an ENS call was made pursuant to the reporting requirements of 10CFR50.72(b)(3)(ii)(A). Engineering analysis subsequently determined that the dimensional characteristics of the flaw were within the acceptability requirements of ASME Section Xl. This analysis conclusion provides the basis for retraction of the ENS report of March 23.</br>Although hypothetical flaw growth calculations demonstrated that the flaw size would remain within the allowable envelope of ASME Section Xl, IWB-3641-1 over the next operating cycle, and continued operation without repair of the observed flaw was justified, PPL Susquehanna, LLC performed a weld repair of the defect during the recently completed refueling outage.</br>Notified the R1DO (R. Barkley)ing outage.
Notified the R1DO (R. Barkley) +
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00:00:00, 29 April 2004 +
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