ML19343A114
| ML19343A114 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 09/04/1980 |
| From: | Parker W DUKE POWER CO. |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19268D039 | List: |
| References | |
| NUDOCS 8009160261 | |
| Download: ML19343A114 (2) | |
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t DUKE POWER COMPANY Powra Burmtwo 42n SocTa Caracu STazzr. CaAntoTTE. N. C. asa4a
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September 4, 1980 WCE P9ESsOEm'
?t'.g *= C n g:Aaga704 Sesam psocuc, ion 3734:e3 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Mr. B. J. Youngblood, Chief Licensing Projects Branch No. 1 Re: McGuire Nuclear Station Docket No. 50-369
Subject:
Low Pressure Turbine Dise Integrity
Dear Mr. Denton:
Please find attached information on the low pressure turbine disc integrity as requested by a letter dated August 27, 1980 from Mr. Robert L. Tedesco of your Staff. Please a se us if you have any questions.
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truly yours, s
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William O. Parker, Jr.
LJB:ses Attachment
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MCGUIRE NUCLEAR STATION UNIT 1 Response to NRC Telecopy of August 21, 1980 Low Pressure Turbine Disc Integrity I.
A.
Westinghouse turbine - 1800 RPM Tandem Compound, Sextuple Flow Serial Numbers: Unit 1 No. 1 LP 23-A-4352 No. 2 LP 23-A-4353 No. 3 LP 23-A-4354 B., attached, is a computer printout of the requested data.
This information is proprietary and is accompanied by an l
af fidavit signed.lar Mr. R. W. Gaul of Westinghouse which requests that this information be withheld from public disclosure. is a non-proprietary version of the information.
I I.~ Preservice inspection has not been performed on any of the McGuire LP l
turbine rotors.
III. Westinghouse has indicated that LP turbine discs 1 thru 4 have sufficient moisture in the hub to cause a propensity for stress corrosion cracking.
IV.
Critical structures exposed to turbine missiles were designed to with-l*
stand their impact. To minimize exposed structures, a peninsular turbine l
orientation was used. -Refer to the following McGuire FSAR sections for a i
description of our analysis and evaluation.
Sections 3.5.1.2, 3.5.2.7, 3.5.5, 3.5.6 Sections 10.2.2, 10.2.3, 10.2.4, 10.2.5 l
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