ML17191B441
| ML17191B441 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 09/09/1999 |
| From: | Rossbach L NRC (Affiliation Not Assigned) |
| To: | Kingsley O COMMONWEALTH EDISON CO. |
| References | |
| TAC-MA5415, TAC-MA5416, NUDOCS 9909170006 | |
| Download: ML17191B441 (5) | |
Text
Mr. Oliver D: Kingsley, President Nuclear Generation Group Commonwealth Edison Company Executive Towe rs West 111 1400 Opus Place, Suite 500 Downers Grove, IL 60515 September 9, 1999 *
SUBJECT:
DRESDEN, UNITS 2 AND 3-REQUEST FOR ADDITIONAL INFORMATION ABOUT CHEMISTRY TECHNICAL SPECIFICATION AMENDMENT REQUEST FOR (TAC NOS. MA5415 AND MA5416)
Dear Mr. Kingsley:
During our review of your license amendment request dated May 3, 1999, which would relocate chemistry technical specifications (TS) from TS to licensee controlled documents, we have identified the need for additional information. The questions in the enclosed request for addition.al informati9n (RAI) were discussed with. your staff on September 8 and Q, 1.999. It was
~'
agreed that the response would be provided by Septembe~ 14, 1999, so thC;it this amendment _
may be issued to support the beginning of refueling outage. D2R16.
Si~cerely, Original,signed by:
Lawrence W. Rossbach, Project Manager,.Section 2 Project Directorate Ill Division of Licensing Project Management...
Office of Nuclear Reactor Regulation Docket Nos. 50-237 and 50-249 *
Enclosure:
RAI cc w/encl: See next page
_Distribution:
(.oock~tfile:,
J. Zwolinski/S. Black
-L. Rossbach M. Ring, Riii
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A. Mendiola :*.:
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DOCUMENT NAME: G:\\Pdiii-2\\dfeSden\\RAIA541~.wpd ;:
". --- 't, To receiv~ a copy of this document, indicat -'n.the 'ox: "C'; *=* Copywithou 0t enclosures "E;,_,;, Copy with en osures "N" = No copy LA OFFICIAL RECORD COPY *.* -
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9909170006 990909
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Mr. Oliver D. Kingsley, President Nuclear Generation Group Commonwealth Edison Company Executive Towers West Ill 1400 Opus Place, Suite 500 Downers Grove, IL 60515 September 9, 1999
SUBJECT:
DRESDEN, UNITS 2 AND 3 - REQUEST FOR ADDITIONAL INFORMATION ABOUT CHEMISTRY TECHNICAL SPECIFICATION AMENDMENT REQUEST FOR (TAC NOS. MA5415 AND MA5416)
Dear Mr. Kingsley:
During our review of your license amendment request dated May 3, 1999, which would relocate chemistry technical specifications (TS) from TS to licensee controlled documents, we have identified the need for additional information. The questions in the enclos_ed request for additi.onal information (RAI) were discussed with your staff on September 8 and 9, 1999. It was agreed that the response would be provided by September 14, 1999, so that this amendment may be issued to support the beginning of refueling outage D2R16.
- Sincerely, Original signed by:
Lawrence W. Rossbach, Project Manager, Section 2 Project Directorate Ill
- Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-23.7 and 50-249
Enclosure:
RAI cc w/encl: See next page Distribution:
Docket File J. Zwolinski/$. Black L. Rossbach M. Ring, Rill PUBLIC A: Mendiola
- OGC, 015B18 PDlll/2 r/f C. Moore ACAS, T2E26 DOCUMENT NAME: G:\\Pdiii-2\\dresden\\RAIA5415.wpd OFFICE PM:PDlll/2.
- E NAME LROSSBACH,..---i.V;(
DATE 09/ CJ /99 OFFICIAL RECORD COPY
*------------------ --~---. *-------- -*--
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UNITED STATES NUCLEAR REGULATORY COMMISSION Mr. Oliver D. Kingsley, President Nuclear Generation Group Commonwealth Edison Company Executive Towers West Ill 1400 Opus Place, Suite 500 Downers Grove, IL. 60515 WASHINGTON, D.C. 20555--0001 September 9, 1999
SUBJECT:
DRESDEN, UNITS 2 AND 3 ~REQUEST FOR ADDITIONAL INFORMATION ABOUT CHEMISTRY TECHNICAL SPECIFICATION AMENDMENT REQUEST FOR (TAC NOS. MA5415 AND MA5416)
Dear Mr. Kingsley:
During our review of your license amendment request dated May 3, 1999, which would relocate chemistry technical *specifications (TS) from TS to licensee controlled documents, we
- have identified the need for additional information. The questions in the enclosed request for additional information (RAl).were discussed with your staff on September 8 and 9, 1999. It was J
agreed that the response would be provided by September.14, 1999, so that. this amendment may be issued to support the beginning of refueling outage D2R16.
Docket Nos. 50-237 and 50-249
Enclosure:
RAI cc w/encl: See next page Sincerely, 67--------- (,/'fl___
Lawrence W. Rossbach, Project Manager, Section 2 Project Directorate Ill Division of Licensing Project Management Office of Nuclear Reactor Regulation
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- 0. Kingsley Commonwealth Edison Company cc:
Commonwealth Edison Company
. Site Vice President - Dresden 6500 N. Dresden Road Morris, Illinois 60450-9765 Commonwealth Edison Company Dresden Station Manager 6500 N. Dresden Road Morris, Illinois 60450-9765 U.S. Nuclear Regulatory Commission Dresden Resident Inspectors Office 6500 N. Dresden Road Morris, Illinois 60450-9766 Regional Administrator U.S. NRC, Region Ill 801 Warrenville Road Lisle, Illinois 60532-4351
. Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive
- Springfield, Illinois 62704 Chairman Grundy County Board Administration Building 1320 Union Street Morris, Illinois. 60450 Document Control Desk-Licensing Commonwealth Edison Company 1400 Opus Place, Suite 400 Downers Grove, Illinois. 60515 Commonwealth Edison Company Reg. Assurance Manager-Dresden 6500 N. Dresden Road Morris, l!!inois 60450-9765 Mr. David Helwig Senior Vice President Commonwealth Edison Company Executive Towe rs West Ill 1400 Opus Place, Suite 900 Downers Grqve, Illinois 60515 J
-Dresden Nuclear Power Station Units 2 and 3 Mr. Gene H. Stanley PWR Vice President Commonwealth Edison Company Executive Towers West Ill 1400 Opus Place, Suite 900 Downers Grove, Illinois 60515 Mr. Christopher C~ane BWR Vice President
. Commonwealth Edison Company Executive Towe rs West Ill 1400 Opus Place, Suite 900 Downers Grove, Illinois 60515 Mr. R. M. Krich Vice President - Regulatory Services Commonwealth Edison* Company Executive Towers West Ill
- 1400 OpusPlace, Suite 500 Downers Grove, Illinois 60515 Ms. Pamela B*.. Stroebel Senior Vice President and General Counsel Commonwealth Edison Company P.O. Box 767 Chicago, Illinois 60690-0767
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REQUEST FOR ADDITIONAL INFORMATION RELATED TO CHEMISTRY TECHNICAL SPECIFICATION.
AMENDMENT REQUEST DRESDEN NUCLEAR POWER STATION. UNITS 2 AND 3 Background and Basis for RAI: In the application of noble metal chemical addition (NMCA), the reactor coolant water chemistry, including conductivity, is expected to change and has the potential to exceed current Technical Specification (TS) limits. Extensive intergranular stress-corrosion cracking (IGSCC) has been found i.n many boiling water reactors (BWRs), including Dresden. The extent of IGSCC in BWRs depends greatly on the water chemistry of.the reactor coolant. To ensure the structural integrity of the components degraded by IGSCC, certain limiting water chemistry conditions such as conductivity and chloride and sulfate content are required to be met in order to support the use of the assumed crack growth rates in the plant specific flaw evaluations. The proposed TS amendment would relocate reactor coolant water chemistry TS requirements to licensee controlled documents. Since these TS have been part of the basis used to justify operation with IGSCC, we have several questions about the chemistry controls that will be in place after the chemistry TS are relocated.
Questions (1)
Describe,.in detail, what programs will be in place to monitor and control water chemistry during the NMCA process. Include a description of the monitoring and controls that will be in place during *the NMCA process for ionic species such as chloride, sulphate, and*
others that would accelerate IGSCC.
. (2)
Describe, in detail, what programs will be in place.to monitor and control water chemistry
- during normal operations. Include a description of the monitoring and controls to ensure the chemistry environment is con~istent with that used to generate the data for crack growth rates.
/
ENCLOSURE