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Initiation
- Request, Request, Request
- Acceptance...
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
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MONTHYEARML12003A0632011-12-16016 December 2011
Tornado and High Energy Line Break (HELB) Mitigation License Amendment Requests (Lars) - Responses to Request for Additional Information, Part 2 of 6
Project stage: Response to RAI
ML12025A1242012-01-20020 January 2012
Tornado and High Energy Line Break Mitigation License Amendment Requests (Lars) - Supplemental Responses to Request for Additional Information (RAI) Nos. 61, 62, and 107
Project stage: Supplement
ML12047A1772012-02-16016 February 2012
Request for Additional Information Regarding the License Amendment Requests for Upgrading the Licensing Basis for High Energy Line Break Mitigation
Project stage: RAI
ML12080A1992012-03-0101 March 2012
Tornado and High Energy Line Break Mitigation License Amendment Requests - Supplemental Responses to Request for Additional Information Nos. 70, 76, and 106
Project stage: Supplement
ML12109A3452012-03-16016 March 2012
Supplement to License Amendment Request for Measurement Uncertainty Recapture Power Uprate, License Amendment Request No. 2011-02, Supplement 2
Project stage: Supplement
ML12144A4442012-06-11011 June 2012
Request for Additional Information Regarding the License Amendment Request for Licensing Basis for the Protected Service Water System (TAC ME7737, ME7738, ME7739, ME7746, ME7747, & ME7748)
Project stage: RAI
ML12188A0712012-07-11011 July 2012
G20120473/ EDATS: OEDO-2012-0404 - Briefing Book - Briefing Package for Meeting with Duke Energy on July 11, 2012
Project stage: Request
ML12312A0312012-11-0202 November 2012
Licensing Basis for the Protected Service Water System - Responses to Request for Additional Information - Supplement 3
Project stage: Supplement
ML12354A2722012-12-20020 December 2012
Request for Additional Information and Suspension of Review of License Amendment Request for Revised Licensing Basis for High-Energy Line Breaks
Project stage: RAI
ML13123A1592013-04-0505 April 2013
Response to Request for Additional Information to Licensing Basis for the Protected Service Water System - Supplement 4
Project stage: Supplement
ML13190A0162013-06-28028 June 2013
Licensing Basis for the Protected Service Water System - Responses to Request for Additional Information - Supplement 5
Project stage: Supplement
ML13228A2682013-08-0707 August 2013
Licensing Basis for Protected Service Water System - Updated Responses to Request for Additional Information Item Nos. 107, 109(a) and 109(b); License Amendment Request (LAR) 2008-07-Supplement 6
Project stage: Supplement
ML13262A3432013-09-19019 September 2013
10/3/2013 Meeting Notice with Duke Energy Carolinas, LLC, to Discuss the Proposed LAR Protected Service Water System Operation for the Oconee Nuclear Station, Units 1, 2, and 3 (TAC Nos. ME7737, ME7738, ME7739, ME7746, ME7747, and ME7748
Project stage: Meeting
ML13281A6972013-10-21021 October 2013
10/3/13 Summary of Meeting with Duke Energy Carolinas, LLC to Discuss the Protected Service Water System Operation - Oconee Nuclear Station Units 1, 2, and 3
Project stage: Meeting
ONS-2013-037, Licensing Basis for Protected Service Water System - Responses to Request for Additional Information Item Nos. 172 Through 189, License Amendment Request (LAR) 2008-07 - Supplement 72013-12-18018 December 2013
Licensing Basis for Protected Service Water System - Responses to Request for Additional Information Item Nos. 172 Through 189, License Amendment Request (LAR) 2008-07 - Supplement 7
Project stage: Supplement
ML14043A2772014-01-28028 January 2014
1/28/14 E-mail from R.Guzman to T.Brown Request for Additional Information - Protected Service Water Modification Calculation OSC-9211
Project stage: RAI
ONS-2014-021, Licensing Basis for the Protected Service Water System - Response to Request for Additional Information (RAI) No. 190; Revised Responses to RAI Nos. 134 and 165; License Amendment Request (LAR) 2008-07 - Supplement 82014-02-14014 February 2014
Licensing Basis for the Protected Service Water System - Response to Request for Additional Information (RAI) No. 190; Revised Responses to RAI Nos. 134 and 165; License Amendment Request (LAR) 2008-07 - Supplement 8
Project stage: Supplement
ONS-2014-048, Licensing Basis for the Protected Service Water (Psw) System - Response to Request for Additional Information (RAI) Nos. 191-194; License Amendment Request (LAR) 2008-07 - Supplement 92014-04-0303 April 2014
Licensing Basis for the Protected Service Water (Psw) System - Response to Request for Additional Information (RAI) Nos. 191-194; License Amendment Request (LAR) 2008-07 - Supplement 9
Project stage: Supplement
ML14099A5172014-04-0909 April 2014
Duke Energy Supplemental Response Protected Service Water LAR - GOTHIC Modeling Questions - 4/9/14 E-mail from R.Gambrell (Duke Energy) to R.Guzman (NRC)
Project stage: Supplement
ONS-2014-056, License Condition for the Unit 3 High Energy Line Break (Helb); License Amendment Request (LAR) 2008-07; Supplement 102014-04-11011 April 2014
License Condition for the Unit 3 High Energy Line Break (Helb); License Amendment Request (LAR) 2008-07; Supplement 10
Project stage: Supplement
ML14157A2402014-04-29029 April 2014
NRR E-mail Capture - Psw Commitments
Project stage: Request
05000269/LER-2014-001, Regarding Unanalyzed Condition Associated with the 13.8kV Emergency Power Cables Located in the Underground Trench2014-05-27027 May 2014
Regarding Unanalyzed Condition Associated with the 13.8kV Emergency Power Cables Located in the Underground Trench
Project stage: Request
ONS-2014-061, Licensing Basis for the Protected Service Water (Psw) System - Response to Requests for Additional Information Regarding Psw Cabling Aging Management Program and Fant Line Supply to Psw Degraded Voltage Protection; License Amendment Req2014-07-24024 July 2014
Licensing Basis for the Protected Service Water (Psw) System - Response to Requests for Additional Information Regarding Psw Cabling Aging Management Program and Fant Line Supply to Psw Degraded Voltage Protection; License Amendment Request
Project stage: Response to RAI
ML14206A7902014-08-13013 August 2014
Issuance of Amendments Regarding Implementation of the Protected Service Water System
Project stage: Approval
2013-04-05
[Table View] |
Text
1 NRR-PMDAPEm Resource From:
Brown, Timothy D [Timothy.Brown@duke-energy.com]
Sent:
Tuesday, April 29, 2014 4:27 PM To:
Hall, Randy; Guzman, Richard Cc:
Baxter, David A
Subject:
PSW Commitments To all:
Some of your electrical technical reviewers questioned whether the commitments listed in our 7/11/2012 RAI response had been completed. Below is our response to that question:
- 1. Establish program to implement periodic condition inspection of the cable trenches, duct banks, manholes, and drainage systems associated with the Keowee to PSW building underground paths.
Response: Model Work order 2103098 was created for the periodic inspections per Maintenance Procedure MP/0/B/2002/002, Protected Service Water (PSW) Underground Cable Duct Bank - Drainage System Inspection. Due date for the first inspection is 10/01/14. Note that the Keowee Underground Trench is currently inspected by MP/0/B/2002/001, Inspection of the Keowee Underground Cable Trench Drainage System. This completes the commitment.
- 2. Include the Keowee to PSW underground path cables in the Oconee Cable Aging Management Program.
Response: The Oconee Nuclear Station Insulated Cables and Aging Management Program has been revised to include the PSW cables in the scope of cables to be inspected every ten years, similar to other existing inaccessible medium voltage cables present in the plant (per License Renewal). This completes the commitment.
- 3. Resolve the two (2) FMEA-related deficiencies associated with the designs of the 4kV SSF and 13.8 kV Keowee distribution feeder circuits.
Response: The SSF identified potential failure was associated with the unintentional, simultaneous powering of the OTS1 switchgear from both the PSW and SSF 4kV power sources following a spurious closure of breaker OTS1-0 with OTS1 aligned to the SSF or spurious closure of breaker OTS1-1 or OTS1-4 with OTS1 aligned to the PSW source. To prevent this, design changes were made.
Interlocked auxiliary contacts from breaker OTS1-0 were installed to prevent breakers OTS1-1 and OTS1-4 from closing while OTS1-0 is closed and vice versa. This completes the commitment.
The Keowee identified potential failure was associated with the unintentional, simultaneous closing of the KPF-9 and KPF-10 breakers at Keowee, resulting in paralleling of the output from the Keowee Units 1 and 2. To prevent this, design changes were made. The breakers KPF-9 and KPF-10 are electrically interlocked so that only one breaker feeds power to PSW switchgear B6T or B7T. The breaker control circuitry was modified such that the breaker close charging springs are maintained discharged until the breaker is commanded to close. Since the closing coil springs are not charged the breaker will not close due to mechanical failure. This completes the commitment.
Should there be any additional questions on these commitments, please let me know.
Timothy D. Brown, PE Duke Energy
2 Oconee Nuclear Station Manager PSW Licensing Office: 864-873-3952 Cell: 864-784-0197
Hearing Identifier:
NRR_PMDA Email Number:
1342 Mail Envelope Properties (34294FB8312F6A48A0AC1838387F7301B08FE8E4)
Subject:
PSW Commitments Sent Date:
4/29/2014 4:27:21 PM Received Date:
4/29/2014 6:04:45 PM From:
Brown, Timothy D Created By:
Timothy.Brown@duke-energy.com Recipients:
"Baxter, David A" <David.Baxter@duke-energy.com>
Tracking Status: None "Hall, Randy" <Randy.Hall@nrc.gov>
Tracking Status: None "Guzman, Richard" <Richard.Guzman@nrc.gov>
Tracking Status: None Post Office:
IMCLTEXCP67.nam.ent.duke-energy.com Files Size Date & Time MESSAGE 2899 4/29/2014 6:04:45 PM Options Priority:
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