ML18139B326: Difference between revisions
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| issue date = 05/13/1981 | | issue date = 05/13/1981 | ||
| title = Ro:On 810428,condenser Cooling Water Outlet Temp Exceeded Max Average Rate of Change.Caused by Lack of Svc Water Flow. Event Caused No Detrimental Effect on River Environ | | title = Ro:On 810428,condenser Cooling Water Outlet Temp Exceeded Max Average Rate of Change.Caused by Lack of Svc Water Flow. Event Caused No Detrimental Effect on River Environ | ||
| author name = | | author name = Sylvia B | ||
| author affiliation = VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) | | author affiliation = VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) | ||
| addressee name = | | addressee name = Denton H, Varga S | ||
| addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR) | | addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR) | ||
| docket = 05000281 | | docket = 05000281 | ||
| Line 11: | Line 11: | ||
| contact person = | | contact person = | ||
| document report number = 314, NUDOCS 8105270285 | | document report number = 314, NUDOCS 8105270285 | ||
| document type = REPORTABLE OCCURRENCE REPORT (SEE ALSO AO | | document type = REPORTABLE OCCURRENCE REPORT (SEE ALSO AO LER), TEXT-SAFETY REPORT | ||
| page count = 1 | | page count = 1 | ||
}} | }} | ||
=Text= | =Text= | ||
{{#Wiki_filter:s e VIRGINIA ELECTR.Ic AND PoWER COMPANY RICRMOND,VIRGJ:N.IA 23261 May 13, 1981 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn: Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen: | {{#Wiki_filter:s e | ||
VIRGINIA ELECTR.Ic AND PoWER COMPANY RICRMOND,VIRGJ:N.IA 23261 May 13, 1981 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn: | |||
Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. | |||
20555 Gentlemen: | |||
Serial No. 314 NO/RMT:ms Docket No. 50-281 License No. DPR-37 This letter report is submitted in accordance with the provisions of Surry Power Station Technical Specification 4.14.C.1. | Serial No. 314 NO/RMT:ms Docket No. 50-281 License No. DPR-37 This letter report is submitted in accordance with the provisions of Surry Power Station Technical Specification 4.14.C.1. | ||
During the period of 0150 to 0250 on April 28, 1981, the condenser's cooling water outlet temperature exceeded the maximum average rate of change of 3°F/hr permitted by Technical Specification 4.14.A3. The average rate of change ing this period was 5°F/hr. At the time of this event, Unit No. 1 was at cold shutdown and Unit No. 2 was at 40% escalating to full power. The lack of service water flow through Unit No. 1 is believed to be a major contributing factor to this event. It should be recognized that all due care and caution were exercised during the power escalation. | During the period of 0150 to 0250 on April 28, 1981, the condenser's cooling water outlet temperature exceeded the maximum average rate of change of 3°F/hr permitted by Technical Specification 4.14.A3. | ||
The average rate of change dur-ing this period was 5°F/hr. | |||
At the time of this event, Unit No. 1 was at cold shutdown and Unit No. 2 was at 40% escalating to full power. | |||
The lack of service water flow through Unit No. 1 is believed to be a major contributing factor to this event. | |||
It should be recognized that all due care and caution were exercised during the power escalation. | |||
A search was conducted to determine if the temperature change had affected the river environment. | A search was conducted to determine if the temperature change had affected the river environment. | ||
No detrimental evidence was found. cc: Mr. James P. O'Reilly Very truly yours, B. R. Sylvia Manager -Nuclear Operations and Maintenance}} | No detrimental evidence was found. | ||
cc: | |||
Mr. James P. O'Reilly Very truly yours, B. R. Sylvia Manager - Nuclear Operations and Maintenance}} | |||
Latest revision as of 21:10, 5 January 2025
| ML18139B326 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 05/13/1981 |
| From: | Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Varga S Office of Nuclear Reactor Regulation |
| References | |
| 314, NUDOCS 8105270285 | |
| Download: ML18139B326 (1) | |
Text
s e
VIRGINIA ELECTR.Ic AND PoWER COMPANY RICRMOND,VIRGJ:N.IA 23261 May 13, 1981 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn:
Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Gentlemen:
Serial No. 314 NO/RMT:ms Docket No. 50-281 License No. DPR-37 This letter report is submitted in accordance with the provisions of Surry Power Station Technical Specification 4.14.C.1.
During the period of 0150 to 0250 on April 28, 1981, the condenser's cooling water outlet temperature exceeded the maximum average rate of change of 3°F/hr permitted by Technical Specification 4.14.A3.
The average rate of change dur-ing this period was 5°F/hr.
At the time of this event, Unit No. 1 was at cold shutdown and Unit No. 2 was at 40% escalating to full power.
The lack of service water flow through Unit No. 1 is believed to be a major contributing factor to this event.
It should be recognized that all due care and caution were exercised during the power escalation.
A search was conducted to determine if the temperature change had affected the river environment.
No detrimental evidence was found.
cc:
Mr. James P. O'Reilly Very truly yours, B. R. Sylvia Manager - Nuclear Operations and Maintenance