ML19095A229
| ML19095A229 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/26/1978 |
| From: | Stallings C Virginia Electric & Power Co (VEPCO) |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| Serial No. 419 | |
| Download: ML19095A229 (1) | |
Text
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VIRGINIA ELECTRIC RICHMOND, Vr:aorN IA 23261 July 26, 19_78 Mr. Victor Stello, Jr., Director Division of Operating Reactors Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Stello:
Serial No. 419 PO&M/LAJ:das Docket Nos. 50-280 50-281 License Nos. DPR-32 DPR-37 COOLING WATER DISCHARGE TEMPERATURE CHANGE RATE This letter report is furnished in accordance with the provisions of Surry Power Station Technical Specification 4.14.C.l *.
During the period 1400 to 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br /> on July 9, 1978, the Condenser Cooling Water Outlet Temperature to the James River increased by 3.5°F as measured at the station discharge structure.
This temperature rate is in excess of the rate of 3°F per hour as permitted by Technical Specification 4.14.A.3.
During this period Unit No. 1 was being escalated from zero to 20% power and was transitioning from manual to automatic contrpl.
This is the least stable range of unit operation and transition to the more stable higher power levels must be made in a timely manner.
The transition was made with due concern for environmental effects, how-ever, during the same period, the inlet temperature to the station increased by l.5°F.
A search was made for evidence that the temperature rate experienced had af-fected the river or its inhabitants.
No evidence of any detrimental effects was found.
cc:
Hr. James P. O'Reilly Director, Region II Very truly yours,
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C. M. Stallings
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Vice President - Power Supply and Production Operations