ML20198D127
| ML20198D127 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 12/16/1998 |
| From: | Mel Gray NRC (Affiliation Not Assigned) |
| To: | Randolph G UNION ELECTRIC CO. |
| References | |
| TAC-MA3954, NUDOCS 9812230014 | |
| Download: ML20198D127 (4) | |
Text
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E December 16, 1998 Mr. Garry L. Randolph Vice President and Chief Nuclear Officer Union Electric Company Post Office Box 620 Fulton, Missouri 65251
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING UNION ELECTRIC COMPANY'S REQUEST FOR AMENDMENT TO THE TECHNICAL SPECIFICATIONS FOR CALLAWAY NUCLEAR PLANT, UNIT 1 (TAC NO.
MA3954)
Dear Mr. Randolph:
The NRC staff has reviewed Union Electric Company's request for an amendment to the Callaway Plant Technical Specifications dated October 27,1998. The license amendment request would change the Technical Specifications and Bases to allow the installation of Framatome Electrosfeeves in the Callaway Plant, Unit 1 steam generators for a maximum of two operating cycles. As a result of the review, the staff has determined that additional information is needed to complete the review. The information needed is detailed in the enclosure. This request for additional information was discussed with your staff in a telecon on December 9,1998.
To assist the NRC staff in completing a timely review, we request that you respond to this request in writing as soon as possible.
If you have any questions, please contact me at (301) 415-3021.
j Sincerely, Original Signed By Mel Gray, Project Manager Project Directorate IV-2 Division of Reactor Projects - Ill/IV Office of Nucleai Reactor Regulation Docket No. 50-483 DISTRIBUTION:
Enclosure:
Request for Additional PUBLIC PDIV-2 Reading Information GBageN OGC,015B18 EAdensam WJohnson, RIV cc w/ encl: See next page WBateman PGwynn, RIV MGray EPeyton EMurphy,EMCB CBeardslee, EMCB i
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9812230014 981216 hDR ADOCK 05000483 PDR
Mr. Garry L. Randolph December 16, 1998 cc w/ encl:
Professions! Nuclear Mr. Otto L. Maynard i
Consulting, Inc.
President and Chief Executive Officer i
19041 Raines Drive Wolf Creek Nuclear Operating Corporation Derwood, Maryland 20855 Post Office Box 411 Burlington, Kansas 66839 John O'Neill, Esq.
Shaw, Pittman, Potts & Trowbridge Mr. Dan I. Bolef, President 2300 N. Street, N.W.
Kay Drey, Representative
)
Washington, D.C. 20037 Board of Directors Coalition for the Environment Mr. H. D. Bono 6267 Delmar Boulevard Supervising Engineer University City, Missouri 63130 Quality Assurance Regulatory Support i
Union Electric Company Mr. Lee Fritz Post Office Box 620 Presiding Commissioner Fulton, Missouri 65251 Callaway County Court House 10 East Fifth Street U.S. Nuclear Regulatory Commission Fulton, Missouri 65151 Resident inspector Office 8201 NRC Road Mr. Alan C. Passwater, Manager Steedman, Missouri 65077-1302 Licensing and Fuels i
Union' Electric Company Mr. J. V. Laux, Manager Post Office Box 66149 Quality Assurance St. Louis, Missouri 63166-6149 Union Electric Company Post Office Box 620 Fulton, Missouri 65251 Manager - Electric Department Misscuri Public Service Commission 301 IN. High Post Office Box 360 Jefferson City, Missouri 65102 Regional Administrator, Region IV U.S. Nuc' ear Regulatory Commission Harris Tower & Pavilion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Mr. Ronald A. Kucera, Deputy Director Department of Natural Resources P.O. Box 176 Jefferson City, Missouri 65102
REQUEST FOR ADDITIONAL INFORMATj.Q. H REGARDING REVIEW OF LICENSE AMENDMENT REQUEST TO ALLOW FRAMATOME ELECTROSLEEVING OF STEAM GENERATOR TUBES UNION ELECTRIC COMPANY CALLAWAY PLANT. UNIT 1 DOCKET NO.40-483 By letter dated October 27,1998, Union Electric Company (UE) submitted for staff review an amendment request to change the Callaway Plant, Unit 1 Technical Specifications (TS) and Bases to allow installation of Framatome Electrosleeves into the Callaway steam generators for a maximum of two operating cycles. This amendment request superseded a previous application for amendment dated April 12,1996. In support of the amendment request, UE submitted Framatome topical report BAW-10219P, Revision 3. The staff has reviewed the amendment request and the subject topical report, and has determined that the following additional information is needed to complete the review.
1.
Table 12.5.2 of BAW-10219P, Revision 3 contains a description of the plugging limit for inner diameter (ID) pits in region "B" and "C" which conflicts with the proposed TS plugging limit of 20% through the sleeve. Per a conference call with UE personnel on November 24,1998, the licensee stated that the plugging limit specified in the TS would be utilized. Please modify the TS wording and revise BAW-10219P or provide an i
addendum to BAW-10219P (which should also be referenced in the TS) to resolve this i
conflict between the proposed TS plugging limit and the topical report.
2.
The proposed insert "A" to TS 4.4.5.4.a.10 (TS page 3/4 4-15) incorrectly references Revision 2 of BAW-10219P. Please modify the proposed TS to reference the correct topical report revision number and also include the date of the topical report.
3.
The proposed insert "A" to TS 4.4.5.4.a.10 indicates that "Any steam generator tube containing an Electrosfeeve which has been int arvice for 2 cycles of plant operation must be removed from service; and...". The wording of this statement would permit ehictrosiaeves to be installed continuously (cycle after cycle), as long as the electrosleeves were removed two cycles later. The NRC staff discussed this issue with UE personnel during a meeting on July 7,1998. At that time, the NRC staff stated that all electrosfeeves should be removed from the steam generators two cycles after the outage the electrosleeves are first installed at Callaway. For example:
a.
Electrosleeves are first installed during outage #1.
b.
Electrosleeves are installed during outage #2.
c.
All electrosleeves shall be removed during outage #3. No other electrosleeves shall be installed.
Please modify the proposed TS wording in your application accordingly.
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i d l 4.
Some of the assumptions used in the determination of the structurallimits reported in Table 8.5.1 of BAW-10219P, Revision 3, are unclear. Specifically, provide the loads imparted on peripheral tubes under locked conditions that were considered in establishing the 45 percent through allowable defect for Service Level A conditions.
Also, describe the transient where these loads become significant. The staff recognizes that the issue of degradation in locked tubes is not applicable for the proposed interim sleeving amendment for Callaway. However, the locked tube loads form the basis for the limiting flaw and the proposed plugging limit for electrosleeve repairs. Therefore, the staff considers it appropriate to obtain these loads in order to verify the conclusions in the topical report.
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