ML060830445
| ML060830445 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee  |
| Issue date: | 03/22/2006 |
| From: | Gill J Entergy Nuclear Vermont Yankee |
| To: | Richard Ennis Office of Nuclear Reactor Regulation |
| References | |
| %dam200606, BVY 06-025 | |
| Download: ML060830445 (9) | |
Text
l_Rick Ens i Rguatory Cormittmnt Cange Schedule for Instllation of Cpaitor nk s Page 1V From: "Gill, Jeanne" <jgill2@entergy.com>
To: "Rick Ennis" <RXEtnrc.gov>
Date: 3/22/06 11:16AM
Subject:
Regulatory Committment Change Schedule for Instilation of Capacitor Banks<<BVY 06-025.pdf>>
Mr. Enn s and Mr. Shea, Good MDrning Gentlemen; I have been asked by Jim Devincentis to supply you with a pdf version of this letter.I am also sending a "hard copy" in today's mail.I am using the addresses that were provided to me by Ronda Daflucas and, as usual, there has been a discussion as to whether they are the proper addresses.
I have been sending everything to you both at One White Flint North, with Mr. Ennis mail code as 0-8-BI,and for Mr. Shea O-8-C2 at 11555 Rockville Pike, Rockville, Md. 20852-2738.
Regardless of what address or variations thereof are typed on the letter, these are the ones I have been using for mailing and since I haven't been informed that something hasn't reached you, I will continue to use these unless you have a different preference.
Please let me know if that is the case.There was a directive after 9/11 that said nothing went directly into Washington, therefore the Rockville address. Is this still the case?Thanks so much for your help with this.Sincere 'y, Jeanne A. Gill Licensing Secretary Entergy North -Vermont Yankee 802 256-4108 CC: <JJS~nrc.gov>
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Creation Date: From: Created By: Regulatory Committment Change Schedule for InstIlation of Capacitor Banks 3/22/06 11:16AM"Gill, Jeanne" <jgilI2@entergy.com>
jgiIl2@entergy.com Recipients nrc.gov owf4-po.0WFND0 RXE (Rick Ennis)nrc.gov TWG'WPOO2.HQGWDOOI1 JJS CC (James Shea)Post Office owf4_j~o.OWFN-DO TWGWP002.HQGWD001 Route nrc.gov nrc.gov Files MESSAGE TEXT. htm BVY (16-025.pdf Mime.822 Options Expiration Date: Priority: Reply Requested:
Return Notification:
Concealed
Subject:
Security: Size 1125 5731 276117 387784 Date & Time 03/22/06 11:16AM None Standard No None No Standard st Entergy Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.Vermont Yankee P.O. Box 0500 185 Old Ferry Road Brattleboro, VT 05302-0500 Tel 802 257 5271 March 21, 2006'Docket No. 50-271 BVY 06-025* .ATTN: Document Control Desk- .U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
References:
- 1) Entergy letter to U.S. Nuclear Regulatory Commission, "Vermont Yankee Nuclear Power Station, Technical Specification Proposed Change No.-263 -Supplement.No.
12, Extended Power Uprate -Revised Grid Impact Study," BVY 04-086, August 25, 2004 2) Nuclear Energy Institute, "Guidelines for Managing NRC Commitment Changes,".
NEI 99-04, Revision 0, July 1999.Subjec':.Vermont Yankee Nuclear Power Station.* Regulatory Commitment Change Schedule for lnstallation of Capacitor Banks In Reference.1 Entergy made a regulatory commitment, based on the System Impact Study (Attachment 2 to Reference 1), to install additional capacitor banks at the Vermont Yankee Nuclea Power Station. (VYNPS) prior to exceeding 630 megawatts electric (gross). Entergy has evaluated this commitment, using the guidance provided :in. Reference 2, and is herein updating the.commitment to include a revised schedule for installation of the capacitor banks.ISO-New England has concurred with the revised schedule.Attachnient 1 provides the technical basis supporting the commitment change. Attachment 2 provides an updated regulatory commitment.
If you have any questions or require additional information, please contact Mr. James DeVincentis at 802-258-4236.
Sincerely (J K. Thayer ite Vice President Vermont Yankee Nuclear Power Station BVY 06-025 Docket No. 50-271 Page 2 of 2 Attachnments (2)cc: Mr. Samuel J. Collins Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road..King of Prussia, PA 19406-1415 Mr. Richard B. Ennis, Project Manager Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation U.S. :Nclear Regulatory Commission Mail Stop 08B1 Washington, DC 20555-0001 Mr. James J. Shea,-Project Manager Project Directorate I Divisiond6f Licensing
'Project Management Office of Nuclear Reactor Regulation U.S. Nuclear.Regulatory Commission Mail Stop 08C2 Washington, DC 20555-0001 USNRC Resident Inspector Entergy Nuclear 'Vermont Yankee, LLC P.O. Box 157 Vernon, VT 05354 Mr. David O'Brien, Commissioner VT Department of Public Service 112 State Street -Drawer 20 Montpelier, VT 05620-2601 Docket No. 50-271 BVY 06-025 Attachment 1 Vermont Yankee Nuclear Power Station Regulatory Commitment Change Basis Capacitor Bank Installation BVY 06-025/Attachment 1/ Page 1 of 2 Vermont Yankee Nuclear Power Station RequlatorV Commitment Change Basis Existing Regulatory Commitment DescriPtion:
Install additional capacitor banks prior to exceeding 630 MWe (gross).Source Document: Entergy letter to the U.S. Nuclear Regulatory Commission, "Vermont Yankee Nuclear Power Station, Technical Specification Proposed Change No.. 263 -Supplement No. 12, Extended Power Uprate -Revised Grid Impact Study," BVY 04-086, August 25, 2004 Revised Regulatory Commitment
==
Description:==
Install two of the three capacitor banks (with a total rating of 45 MVAr) by June 1, 2006 and install the third capacitor bank (with a rating of 15 MVAr) prior to start-up from the spring 2007 refuel outage.Backq ound: In support of the change in licensed power from 1593 MWt to 1912 MWt, a number of plant modifications were necessary to maintain acceptable operating margins. A System Impact Study was prepared by GE Power Systems Energy Consulting for ISO-New England to analyze the impact of the full power uprate on the interconnected New'England transmission system in accordance with NEPOOL reliability standards.
The-System Impact Study was provided to the NRC as part of Entergy's submittal of August 25, 2004 (reference above). For study purposes, the full power uprate was represented with a rating of 684 MVA, a final power output rating of 667 MW, and a gross reactive power output rating of 150 MVAr at rated power output.ISO-New England determined that the power. uprate of VYNPS would not have any significant adverse effect on the reliability or operating characteristics of the system,'subject to satisfaction of certain conditions; including ensuring that normal 345 KV operating voltage is not adversely impacted as a result of the power uprate by the installation of 60 MVAr of shunt capacitors at the .VYNPS 115 kV switchyard.
This is accomplished by the installation of one 30 MVAr and two 15 MVAr capacitor banks.. The capacitor banks will help maintain the 345 kV bus voltages at the pre-uprate scheduled voltage values under highly loaded grid conditions.
Entergy had originally scheduled completion of the modification to add capacitor banks during refueling outage 25, occurring in the fall of 2005. It is now planned that two of the three capacitor banks (with a total rating of 45 MVAr) will be installed by June 1, 2006 and the third capacitor bank (with a rating of 15 MVAr) will be installed prior to start-up from the spring 2007 refuel outage.
BVY 06-025/Attachment 1/ Page 2 of 2 Vermont Yankee Nuclear Power Station Regulatory Commitment Change Basis Basis and Justification for Revising:.Currently, two of the new capacitor banks (with a.total rating of 45 MVAr) are scheduled to be placed in service by late April 2006. The third capacitor bank (with a rating of 15* MVAr) will not be Placed in service until as late as spring 2007 (corresponding to VYNPS refueling outage RFO-26) because de-energization of the 115 kV switchyard bus is necessary to perform a repair of a disconnect switch.ISO-New England is fully aware of the revised schedule for placing the capacitor banks in service, including the fact that the capacitor banks ..may be placed in service following.
power ascension above 630 MWe. Operation of VYNPS at power levels exceeding 630 MWe is acceptable for the following reasons: 1. The transmission gridload is relatively-low during early spring, and the need for the capacitor banks located at VYNPS to provide additional system VAr support, is not anticipated during March, April and May 2006.2. From June 2006 until spring 2007, if an additional 15 MVAr support is required to maintain system voltage requirements, the VAr support can be supplied from other sources including existing nearby capacitor banks located at Chestnut Hill (one capacitor bank at 23.4 MVAr and two capacitor banks at 13.2 MVAr), and Coolidge (two banks at 25 MVAr).3. All transmission owners connected to the high voltage transmission system in New England have signed the ISO-NE Participants agreement.
As stated in ISO-NE Operating Procedure OP-1, "Central Dispatch Operating Responsibility and Authority of ISO-New England, the. Local Control Centers and Market Participants," the agreements provide "ISO-NE with the operating responsibility and authority.
necessary to reliably and efficiently operate the New England* Control Area .in -compliance with ISO New England, NPCC and NERC standards.".
Part Ill of the procedure goes on to state: "This assigned responsibility and authority extends to include decisions, instructions, and orders issued to Local Control Centers and Market Participant facilities electronically,* verbally or in writing, as required for day-to-day, minute-to-minute operation of both generation and transmission facilities under normal. and emergency conditions and.in compliance with NERC, NPCC and ISO policies.".
Thus, ISO-.NE has the authority to require VYNPS to reduce MW generation at any time to supply additional MVAr capacity to the system, if necessary.
These measures are not anticipated to be necessary between May of 2006 and spring of 2007 when the additional 15 MVAr capacitor bank will be placed in service; however, based on ISO-NE's authority, assurance exists that required MVAr capacity can be provided when needed.
Docket No. 50-271 BVY 06-025 Attachment 2 Vermont Yankee Nuclear Power Station Revised Regulatory Commitment Capacitor Bank Installation BVY 06-025/Attachment 2/ Page 1 of 1 List of Regulatory Commitments The following table identifies those actions committed to by Entergy in this document.
Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
TYPE SCHEDULED T(Check one) COMPLETION DATE COMMITMENT-ONE-TIME CONTINUING ACTION COMPLIANCE Install additional capacitor banks X Install two capacitor banks (with a total rating of 45 MVAr) by June 1, 2006 and install the third capacitor bank (with a rating of 15 MVAr) prior to start-up from the spring 2007 refuel outage.