ENS Event | |
|---|---|
05:24 Nov 10, 2010 | |
| Title | Telephone Notification in Lieu of Written Ler - Invalid Actuation of Motor Driven Auxiliary Feedwater Pump |
| Event Description | Event: Invalid actuation of the 'B' Motor Driven Auxiliary Feedwater (MDAFW) pump.
Report Type: This 60-day telephone notification is being made under 10CFR50.73(a)(2)(iv)(A) and 10CFR50.73(a)(1). Description: On November 10, 2010, the 'A' Main Feedwater Pump (MFP) was started per plant operating procedures. When the 'A' MFP was started, there was a partial activation of the Auxiliary Feedwater System with the start of the 'B' MDAFW. The plant was in Mode 3 after completing refueling outage 16 during this event. Actual plant conditions and parameters did not exist that required an automatic start of the 'B' MDAFW pump. Therefore, this actuation is classified as invalid. The system started and functioned successfully. This invalid actuation was entered into the corrective action program as NCR-432566. The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Harris  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+322.18 h13.424 days <br />1.918 weeks <br />0.441 months <br />) | |
| Opened: | Kimberly Bass 15:35 Nov 23, 2010 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Nov 23, 2010 |
| 46435 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Standby (0 %) |
| After | Hot Standby (0 %) |
WEEKMONTHYEARENS 580872025-10-21T15:01:00021 October 2025 15:01:00
[Table view]10 CFR 50.73(a)(1), Submit an LER Invalid Specified System Actuation ENS 471712011-06-21T17:08:00021 June 2011 17:08:00 10 CFR 50.73(a)(1), Submit an LER 60-Day Optional Telephonic Notification of Invalid Specified System Actuation ENS 464352010-11-10T05:24:00010 November 2010 05:24:00 10 CFR 50.73(a)(1), Submit an LER Telephone Notification in Lieu of Written Ler - Invalid Actuation of Motor Driven Auxiliary Feedwater Pump ENS 464672010-10-28T20:04:00028 October 2010 20:04:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of the "B" Emergency Service Water (Esw) Pump ENS 458382010-02-16T15:22:00016 February 2010 15:22:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of a Motor Driven Auxiliary Feedwater Pump 2025-10-21T15:01:00 | |