ML19350B946
| ML19350B946 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 03/18/1981 |
| From: | Parker W DUKE POWER CO. |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.2, TASK-TM NUDOCS 8103240455 | |
| Download: ML19350B946 (2) | |
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o DIJKE PowEn COMPANY PowErn Britorso 422 SorTn Catwn STREET, Clukt.OTTE, N. C. 233R w u,4 o
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.*'"'"[.*[j,2l Mr. Harold R. Denton, Director I:~,c Office of Nuclear Reactor Regulation
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Attention:
B. J. Youngblood, Chief L]
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Licensing Projects Branch No. 1
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Re: McGuire Nuclear Station D'
Docket Nos. 50-369, 50-370 N
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Dear Mr. Denton:
In our respons'e to Item'II.F.2 in my letter of March 9, 1981, it was stated that a description of the conformance of the Subcooling Monitor to R.G. 1.97 would be submitted by April 23, 1981 along with the overall description of compliance with R.G. 1.97.- This description will include an assessment of.
-the core exit thermocouples using Attachment.1 to Item II.F.2 in IUREG-0737.
With regard to Item II.K.3 (C.3.10 and C.3.12) a plant specific transient analysis was not performed in selecting the power level belowwhich a PORV would not be actuated upon trip of the turbine. Rather the results of the analysis for Farley Unit 2 were used. This analysis supported a setpoint of 50% power.for Farley. Farley is a three loop plant, therefore it has a higher power ~ density per loop than McGuire which is a four loop plant. Thus the Farley. analysis is conservative compared to.McGuire for the purpose of selecting a reactor trip setpoint upon turbine trip.
As part of the power ascension testing, a test will be performed to verify-the response of the plant to a turbine trip at 1% below the F-11 setpoint (nominally 47% of full power). Primary reactor coolant and secondary system parameters will be monitored during the transient using existing plant in-
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strumentation. Acceptance criteria will include: Reactor does not trip and pressurizer power operated relief valves do not open. Appropriate test ab-stracts-in the McGuire FSAR will be revised to reflect these revised acceptance criteria at a future date.
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Mr. Harold R. Denton, Director March IS, 1981 Page 2 If there are any questions regarding either of these matters, please advise.
Very truly yours, b
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Willian 0. Parker, J GAC:pw cc:
T. J. Donat Senior Resident Inspector McGuire Nuclear Station
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