05000382/LER-2005-004, Re Details of the Loss of Offsite Power During Hurricane Katrina
| ML053040460 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 10/27/2005 |
| From: | Murillo R Entergy Nuclear Operations, Entergy Nuclear South |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2006-0169, W3F1-2005-0070 LER 05-004-00 | |
| Download: ML053040460 (8) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 3822005004R00 - NRC Website | |
text
-- Entergy Entergy Nuclear South Entergy Operations, Inc.
17265 River Road Killona, LA 70057-3093 Tel 504-739-6715 Fax 504-739-6698 rmurill@entergy.com Robert J. Murillo Licensing Manager, Acting Waterford 3 10 CFR 50.73 W3Fl-2005-0070 October 27, 2005 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555
Subject:
Licensee Event Report 2005-004-00 Waterford 3 SES Docket No. 50-382 License No. NPF-38
Dear Sir or Madam:
Attached is Licensee Event Report (LER) 2005-004-00 for Waterford Steam Electric Station Unit 3. This report provides details of the loss of offsite power during Hurricane Katrina and is being submitted in accordance with 10 CFR 50.73 (a)(2)(iv)(A) and 10CFRI0.73 (a)(2)(v)(AB, & D).
There are no commitments contained in this submittal. If you have any questions, please contact Ron Williams at (504) 739-6255.
Very truly yours,
~1 It lv e~
RJM/RLW/
Attachment
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- A"ec/-a
W3FI-2005-0070 Page 2 cc:
Mr. Bruce S. Mallett Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Senior Resident Inspector Waterford Steam Electric Station Unit 3 P.O. Box 822 Killona, LA 70066-0751 U. S. Nuclear Regulatory Commission Attn: Mr. N. Kalyanam Mail Stop 0-07 D1 Washington, DC 20555-0001 Wise, Carter, Child & Caraway ATTN: J. Smith P.O. Box 651 Jackson, MS 39205 Winston & Strawn ATTN: N.S. Reynolds 1700 K Street, NW Washington, DC 20006-3817 Louisiana Department of Environmental Quality Office of Environmental Compliance (REP&R) Unit Emergency and Radiological Services Division P.O. Box 4312 Baton Rouge, LA 70821-4312 American Nuclear Insurers 95 Glastonbury Blvd - Suite 300 Glastonbury, CT 06033-4443 Morgan, Lewis & Bockius LLP ATTN: T.C. Poindexter 1111 Pennsylvania Avenue, NW Washington, DC 20004 R.K. West, lereventseinpo.org - INPO Records Center
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 06/30/2007 (6-2004)
, the NRC may digits/characters for each block) not conduct or sponsor, and a person Is not required to respond to, the
- 3. PAGE Waterford Steam Electric Station, Unit 3 05000-382 1 OF 6
- 4. TITLE Loss of Offsite Power During Hurricane Katrina
- 6. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED FACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR SEQUENTIAL REOV MONTH DAY YEAR N/A 05000 FACILIrY NAME DOCKET NUMBER 08 29 2005 2005 - 004 -
00 10 27 2005 N/A 05000
- 9. OPERATING MODE 11 THIS REPORT IS SUBMIfTED PURSUANT TO THE REQUIREMENTS OF 10 CFR§: (Check al that apply) 20.2201(b)
[I 20.2203(a)(3)(i)
El050.73(a)(2)(i)(C) 0 50.73(a)(2)(vii) 3 El 20.2201 (d) a:
20.2203(a)(3)(ii)
El 50.73(a)(2)(ii)(A) 0 50.73(a)(2)(viii)(A)
El 20.2203(a)(1)
D 20.2203(a)(4) 0 50.73(a)(2)(ii)(B)
El 50.73(a)(2)(viii)(B) 1 R 20.2203(a)(2)(i) a 50.36(c)(1)(i)(A)
E 50.73(a)(2)(iii) 0 50.73(a)(2)(ix)(A)
- 10. POWER LEVEL El 20.2203(a)(2)(ii)
El 50.36(c)(1)(0)(A)
%3 50.73(a)(2)(iv)(A)
El 50.73(a)(2)(x) 0l 20.2203(a)(2)(iii)
El 50.36(c)(2)
C3 50.73(a)(2)(v)(A)
El 73.71 (a)(4) 0l 20.2203(a)(2)(iv)
El 50.46(a)(3)(ii)
%3 50-73(a)(2)(v)(B) 0 73.71 (a)(5)
N/A E
20.2203(a)(2)(v) 0 50.73(a)(2)(i)(A) 0 50.73(a)(2)(v)(C) 0 OTHER 0
20.2203(a)(2)(vi) 0 50.73(a)(2)(i)(B) 0 50.73(a)(2)(v)(D)
Specify In Abstract below or in (If more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of NRC Forn 366A)On 8130/2005 at approximately 18:00, plant experienced a major loss of emergency preparedness offsite communications [Fl] capability because of the loss of Reactor Auxiliary Building (RAB), Emergency Operations Facility (EOF) telecommunication switches, and the Operational Hotline and NRC ENS lines. The Offsite communications remaining available were the industrial hotline, civil defense radio, satellite telephones and cellular telephones. This loss of offsite communications capability was reported to the NRC under 10 CFR 50.72(a)(1)(i) at 20:20, as part of the existing Unusual Event declaration.
Grid restoration activities continued due to the transmission network in the vicinity of Waterford 3 having damaged towers and limited connections. The 230 kV transmission lines from Waterford 3 Switchyard to Waterford 3 Switching Station remained intact during the hurricane and did not require any work for restoration of offsite power. Waterford 3 continued to run its safe shutdown loads on the EDGs as grid restoration progressed. Following analysis of the surrounding infrastructure and grid capabilities, the decision was made to cool the plant down to Mode 5. The plant transitioned to Mode 5 at 14:18 on September 1, 2005. Grid evaluations were performed to consider transfer of safety busses from onsite emergency power sources (EDGs) to the preferred offsite power sources. The evaluations concluded that safety busses could be reconnected to offsite power; however, to maintain diversity and conservatism, only one train of shutdown equipment was connected to offsite power source until the grid was further strengthened with additional spinning reserves. Train A offsite power source was available at approximately 19:00 and declared operable at 23:21 on September 1, 2005. Following additional grid evaluations, Train B offsite power source was available at 21:54 and declared operable at 22:20 on September 2, 2005. The plant remained shutdown pending continued grid and infrastructure restoration activities and the results of the NRC and Federal Emergency Management Agency's (FEMA) restart readiness inspection.
Emergency Preparedness offsite communications capability that was previously lost had been reestablished through the use of a functional Operational Hotline, a dedicated open line to the NRC to replace the Emergency Notification System (ENS) and the routing of key plant telephone numbers through Little Rock, AK. Because of the restoration of communication circuits, the Unusual Event was terminated at 17:40 on September 7, 2005.
Following satisfactory completion of the NRC and FEMA's restart readiness inspection and authorization to resume operation on September 9, 2005; plant startup commenced. The plant was synchronized to the grid at 12:16 on September 13, 2005.
(If more space is required, use additional copies of (If more space is required, use additional copies of NRC Form 366A)There was no significant equipment problems noted while maintaining shudown conditions during and after the hurricane. If the EDGs were lost during operation, the temporary diesel generators, which were brought onsite prior to the hurricane landfall, could have been connected to one of the safety busses to maintain safe plant shutdown conditions. Based on the above, this event did not have a significant effect on the health and safety of the public.
SIMILAR EVENTS
A review of events occurring within the past three years did not identify any previous similar occurrences.
ADDITIONAL INFORMATION
Energy Industry Identification System (EIIS) codes are identified in the text within brackets [J.
FIGURE 1 Waterford 3 Switchyard Arrangement