ML20133B470
| ML20133B470 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 12/31/1996 |
| From: | Kelly G NRC (Affiliation Not Assigned) |
| To: | Leslie Liu IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| References | |
| GL-92-01, GL-92-1, TAC-M92673, NUDOCS 9701030202 | |
| Download: ML20133B470 (5) | |
Text
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December 31, 1996 Mr. Lee Liu Chairman of the Board, President, and Chief Executive Officer IES Utilities Inc.
200 First Street, SE Cedar Rapids, IA 52406-0351
SUBJECT:
CLOSE0VT FOR THE IES UTILITIES INC. RESPONSE TO GENERIC LETTER 92-01, REVISION 1, SUPPLEMENT 1 FOR THE DUANE ARNOLD ENERGY CENTER (TAC NO. M92673)
Dear Mr. Liu:
On May 19, 1995, the NRC issued Generic Letter 92-01, Revision 1, Supplement 1 (GL 92-01, Rev.1, Supp.1), " Reactor Vessel Structural Integrity."
In GL 92-01, Rev.1, Supp.1, the NRC requested that nuclear licensees perform a review of their reactor pressure vessel structural integrity assessments in order "to identify, collect, and report any new data pertinent to [the]
analysis of [the] structural integrity of their reactor pressure vessels (RPVs) and to assess the impact of that data on.their RPV integrity analyses relative to the requirements of Section 50.60 of Title 10 of the Code of Federal Regulatfons (10 CFR 50.60), 10 CFR 50.61, Appendices G and H to 10 CFR Part 50 (which encompass pressurized thermal shock (PTS) and upper shelf energy (USE) evaluations), and any potential impact on low temperature overpressure (LTOP) limits or pressure-temperature (P-T) limits."
More specifically, in GL 92-01, Rev.1, Supp.1, the NRC requested that addressees provide the following information in their responses:
(1) a description of those actions taken or planned to locate all data relevant to the determination of RPV integrity, or an explanation of why the existing data base is considered complete as previously submitted, (2) an assessment of any change in best-estimate chemistry based on consideration of all relevant data; (3) a determination of the need for the use of the ratio procedure in accordance with the established Position 2.1 of RG 1.99, Revision 2, for those licensees that use surveillance data to provide a basis for the RPV integrity evaluation; and (4) a written report providing any newly acquired data as specified above and (1) the results of any necessary revisions to the evaluations of RPV integrity in accordance with the requirements of 10 CFR 50.60, i
10 CFR 50.61, Appendices G and H to 10 CFR Part 50, and any potential impact on the LTOP and P-T limits in the technical specifications, or (2) a certification that previously submitted evaluations remain valid.
030020 NRC fu CBIS W D
9701030202 961231 PDR ADOCK 05000331 P
P' Revised evaluations and certifications were to include consideration of Position 2.1 of RG 1.99, Revision 2, as applicable, and any new data.
The information in Reporting Item (1) was to be submitted within 90 days of the issuance of the GL. The information in Reporting Items (2) -- (4) was to be submitted within 6 months of the issuance of the GL.
The NRC staff has noted that IES Utilities Inc. (IES) submitted the information requested in Reporting Item (1) on August 17, 1995, and requested in Reporting Items (2) -- (4) on November 17, 1995.
Your response indicates that IES has performed some additional reviews of the pertinent Owners Group databases and has not found any additional data regarding the best-estimate i
chemistries for the RPV materials and surveillance capsules at the Duane Arr.ald Energy Center (DAEC).
Since IES has submitted the requested information and has indicated that the previously submitted evaluations remain valid, the staff considers the RPV integrity data for the DAEC to be complete at this time. The staff therefore concludes that no additional information regarding the structural integrity of the RPV at the DAEC is available at this time, and that your efforts regarding GL 92-01, Rev. 1, Supp. I are complete.
i This completes all actions related to the referenced TAC Number.
The staff has also noted that you are waiting for some of the Owners Groups' Reactor Vessel Working Groups to complete activities to establish a comprehensive RPV information database.
These assessments are expected to be completed by the summer of 1997.
We request that you provide us with the results of the Owners Groups' programs relative to your plant. When you provide this information, the staff may open a plant-specific TAC No. for its review.
Thank you for your cooperation.
Sincerely, 1
i Original signed by:
Glenn B. Kelly, Project Manager i
Project Directorate III-3 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation l
Docket No. 50-331 Distribution:
cc:
See next page See separate sheet.
DOCUMENT NAME:G:\\DUANEARN\\DUA92673.LTR To receive a copy of this document, indicate in the box: "C" = Copy without enclosures *E* = Copy with enclosures
- N* = No copy 0FFICE PD33:LA l / _,
PD33:PM c-NAME DFoster-Cuhseen GKelly\\
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_DATE 12/3l/96 h &
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Mr.' Lee Liu Duane Arnold Energy Center IES Utilities Inc.
t CC:
Jack Newman, Esquire Kathleen H. Shea, Esquire Morgan, Lewis, & Bockius 1800 M Street, NW.
Washington, DC 20036-5869 Chairman, Linn County Board of Supervisors Cedar Rapids, Iowa 52406 IES Utilities Inc.
ATTN: Gary Van Middlesworth Plant Superintendent, Nuclear 3277 DAEC Road Palo, Iowa 52324 Mr. John F. Franz, Jr.
Vice President, Nuclear Duane Arnold Energy Center 3277 DAEC Road Palo, Iowa 52324 Mr. Ken Peveler l
Manager, Nuclear Licensing Duane Arnold Energy Center 3277 DAEC Road Palo, Iowa 52324 U. S. Nuclear Regulatory Commission Resident Inspector's Office Rural Route #1 Palo, Iowa 52324 4
Regional Administrator, RIII U. S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4531 Ms. Parween Baig Utilities Division Iowa Department of Commerce Lucas Office Building, 5th floor Des Moines, Iowa 50319
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j t Revised evaluations and certifications were to include consideration of Position 2.1 of RG 1.99, Revision 2, as applicable', and any new data. 'The i
i information in Reporting Item (1) was to be submitted within 90 days of the issuance of the GL.
The information in Reporting Items (2) - (4) was to be j
j submitted within 6 months of the issuance of the GL.
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I The NRC staff has noted that IES Utilities Inc. (IES) submitted the information requested in Reporting Item (1) on August 17, 1995, and' requested 1
in Reporting Items (2) - (4) on November 17, 1995.
Your response indicates that IES has performed some additional reviews of the pertinent Owners Group databases and has not found any additional data regarding the best-estimate chemistries for the RPV materials and surveillance capsules at the Duane Arnold Energy Center (DAEC).
Since IES has submitted the requested information and has indicated that the previously submitted evaluations remain valid, the staff considers the RPV integrity data for the DAEC to be complete l
at this time.
The staff therefore concludes that no additional information regarding the structural integrity of the RPV at the DAEC is available at this i
time, and that your efforts regarding GL 92-01, Rev. 1, Supp. 1 are complete.
i This completes all actions related to the referenced TAC Number.
The staff has also noted that you are waiting for some of the Owners Groups' Reactor Vessel Working Groups to complete activities to establish a comprehensive RPV information database. These assessments are expected to be completed by the summer of 1997.
We request that you provide us with the results of the Owners Groups' programs relative to your plant. When you provide this information, the staff may open a plant-specific TAC No. for its review.
Thank you for your cooperation.
Sincerely, l
Original signed by:
d Glenn B. Kelly, Project Manager Project Directorate III-3
. Division of Reactor Projects'III/IV Office of Nuclear Reactor Regulation Docket No. 50-331 Distrioution:
cc: See next page See separate sheet.
DOCUMENT NAME:'i:\\DVANEARN\\DUA92673.LTR To receive a copy of this document, indicate in the box: "C" = Copy without enclosures *E" = Copy with enclosures s
"N" = No copy
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PD33:PM l c-NAME DFoster-Cutseen GKelly\\
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