ML19341C216
| ML19341C216 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/23/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8103020401 | |
| Download: ML19341C216 (2) | |
Text
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TENNESSEE V ALLEY /* UTHORi~Y
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Director of Nuclear Reactor Regulation d
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b Attention:
Mr. A. Schwencer, Chief Licensing Branch No. 2
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FEB 2 71981am Division of Licensing Q u.s % %
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U.S. Nuclear Regulatory Comission Washington, DC 20555
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Dear Mr. Schwencer:
In the Matter of
)
Docket No. 50-327 Tennessee Valley Authority
)
Section 6.3 5 of Supplement 1 to the Sequoyah Nuclear Plant Safety Evaluation Report requires TVA to submit the data from startup test 8.5.1 dealing with the water temperature of the upper head taken at various power levels during power ascension testing. Enclosed is the required information.
If you have any questions, please get in touch with D. L. Lambert at FTS 857-2581.
Very truly yours, TENNESSEE VALLEY AUTHORITY
! i ) ' (. L,
i L. M. Mills, Manager Nuclear Regulation and Safety Sworn to and subscribed before me M M day of N 2d.
1981 th r-)14Mh
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NotpyPublic
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Enclosure cc:
Mr. M. A. Siano, Project Manager (Enclosure)
TVA Projects Nuclear Commercial Operations Division Westinghouse Electric Corporation P.O. Box 355 Pittsburgh, Pennsylvania 15230 0
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s4 810302 0k
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a.~. 4 ENCLOSURE SEQUOYAH NUCLEAR PLANT UNIT 1 UPPER HEAD TEMPERATURES Thermal power 30%
50%
75%
,.90%
100%
Temperature ( F)
Loop 1 Hot Leg 565 577 595 610 617 Loop 2 Hot Leg 565 576 590 610 620 Loop 3 Hot Leg 580 576 610 620 622
-Loop 4. Hoe Leg 575 575 605 620 620
-Loop 1 Cold' Leg 548 545 540 545 547 Loop 2 Cold Leg 548
-545 550 550 548 Loop 3 Cold Leg 550 544 545 550 557 Loop 4 Cold Leg 550 543 545 555 554 Upper Head T/C No. 1 544.6 545*
544.2 546.3 550.5
. Upper Head T/C No. 2 543.7 544 543.7 545.4 549.5 Upper Head T/C No. 3 543.6 544 543.9 546.1 549.5 Upper Head T/C No. 4 542.9 544 543.6 545.4 549.5
~ Upper Head T/C No. 5 543.9 543 543.9 545.4 550.0 NOTE: The hot and cold leg temperatures were taken from a control room recorder which is not as accurate as the upper head thermocouple reading taken from the process computer. This resolution problem is also the major reason for.
the large delta T difference between loops.
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- These temperatures were taken from a 'different instrument than the other upper head T/C readings.
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