ML20055E171

Requests That Licensee Provide Data on Channel Box Bow Vs Exposure Associated W/Methods Used to Account for Effects of Channel Box Bow During Second Bundle Lifetime Channel Boxes, Per 900425 Response to Bulletin 90-002,within 30 Days

ML20055E171
Person / Time
Site:	Peach Bottom
Issue date:	07/06/1990
From:	Suh G Office of Nuclear Reactor Regulation
To:	Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
IEB-90-002, IEB-90-2, TAC-76343, NUDOCS 9007110090
Download: ML20055E171 (3)

Text

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July 6, 1990

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• Do'cket No, 50-277 DISTRIBUTION _

. Docket File 1 PClark Mr. George A. Hunger, Jr. "NRC & LPDR OGC Director-Licensing, MC 5-2A-5 PDI-2 R/F EJordan-Philadelphia Electric Company SVarga ACRS (10)

Nuclear Group Headquerters BBoger RJones Correspondence Control Desk WButler DFieno P. O. Fox No. 195 M0'Brien WLong Wayne, Pennsylvenia 19087-0195 GSuh

SUBJECT:

RESPONSE TO HRC BULLETIN NO. 90-02 FOR PEACH BOTTOM ATOMIC POWER STATION, UNIT 2 (TAC NO. 76343)

The staff has performed an initial revicw of the response by Philadelphia Electric Company to NRC Bulletin No. 90-02, titled " Loss of Thermal Margin Caused by Channel Box tow." The licensee's response was documented in e letter dated April 25, 1990, which indicated that 59 channel boxes were being used for a second fuel bundic lifetime in the reactor core for Unit 2. 1he response described the number and disposition of these channel boxes in the core, and described the actions taken to assure compliance with the technical specification thermal limits. The initial staff review of the April 25, 1990 submittal has identified the need for additional information.

Specifically, the staff requests that the licensee provide the data base on channel box bow versus exposure associated with the methods used to account for the effects of channel box bow during the second bundle lifetime use of channel boxes. We request that this information be submitted within 30 days of receipt of this letter. The staff is currently reviewing your methodology for incorporating the effects of channel box bow in the thermal limits analyses.

Concerns identified as a result of our review of the methodology, if any, will be forwarded to you by separate correspondence.

The reporting and/or record keeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511. Should you have any questions concerning the above, please do not hesitate to contact us.

Sincerely,

/S/

Gene Y. Suh, Project Manager Project Directorate I-2 Division of Reactor Projects 1/11 Office of Nuclear Reactor Regulation Cc:

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHING TON. D. C. 20b55 a

t kNl}.L,/ July 6, 1990 Docket No. 50-?77 Mr. George A. Hunger, Jr.

Director-Licensing, MC 5-2A-5 i Philadelphia Electric Company Nuclear Group Headquarters Correspondence Control Desk P. O. Box No. 195 Wayne, Pennsylvania 19087-0195

SUBJECT:

RESPONSE TO MRC BULLETIN NO. 90-02 TOR PEACH BOTTOM ATOMIC POWER STATION, UMIT 2 (TAC NO. 76343)

The staff has performed an initial review of the response by Philadelphia Electric Company to NRC Bulletin No. 90-02, titled " Loss of Thermal Margin Caused by Channel Co,t Bow." The licensee's response was documented in a letter dated April 25 , 1990, which indicated that 59 channel boxes were being

• Uted for a second fuel burdle lifetime in the reactor core for Unit 2. The res;cnse described the number and disposition of these channel boxes in the core, and described the actions taken to assure compliance with the technical specification thermal limits. The initial staff review of the April 25, 1990 '

submittal has identified the need for additional information.

Specifically, the staff requests that the licensee provide the data base on '

channel box bow versus exposure associated with the methods used to account for the effects of channel box bow during the second bundle lifetime use of channel boxes. We request that this information be submitted within 30 days of receipt ,

of this letter. The staff is currently reviewing your methodology for incorporating the effects of channel box bow in the thermal limits analyses.

Concerns identified as a result of o:tr review of the methodology, if any, will be forwarded to you by separate correcoondence.

The reporting and/or record keeping reqrirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511. Should you have any questions concerning the above, please do not hesitate to contact us.

Sincerely,

/& f Gene Y. %h, Project Manager Project Directorate I-2 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation ec:

See next page i

Mr. George A. Hunger, Jr. Peach Bottom Atomic Power Station, Philadelphia Electric Company Units 2 and 3 cc:

Troy B. Conner, Jr. , Esq. Single Point of Contact 1747 Pennsylvania Avenue, N.W. P. O. Box 11880 Washington, D.C. 20006 Harrisburg, Pennsylvania 17108-1880 Philadelphia Electric Company Mr. Thomas M. Gerusky, Director ATTN: Mr. D. B. Miller, Vice President Bureau of Radiation Protection Peach Bottom Atomic Power Station Pennsylvania Department of Route 1, Box POB Environmental Resources Delta, Pennsylvania 17314 P. O. Box 2063 Philadelphia Electric Company ATTH: Regulatory Engineer, Al-25 Mr. John Rush Baldwin, Secy Peach Bottom Atomic Power Station Board of Supervisors Route 1, Box 208 Peach Botton Township Delta, Pennsylvania 17314 R. D. #1 Delta, Pennsylvania 17314 Resident inspector '

U.S. Nuclear Regulatory Comission Public Service Comission of Maryland Peach Bottom Atomic Power Station Engineering Division P.O. Box 399 ATTN: Chief Engineer Delta, Pennsylvania 17314 231 E. Baltimore Street Baltimore, MD 21202-3486 Regional Administrator, Region i U.S. Nuclear Regulatory Commission Mr. Tom Magette 475 Allendale Road Power Plant Research Program King of Prussia, Pennsylvania 19406 Department of f:atural Resources B-3 fir Roland Fletcher Tawes State Office Building Department of Environment Annapolis, Maryland 21401 201 West Preston Street Baltimore, Maryland 21201 t

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