ML19323C214
| ML19323C214 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 05/05/1980 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Hancock J FLORIDA POWER CORP. |
| References | |
| TAC-43912, NUDOCS 8005150149 | |
| Download: ML19323C214 (3) | |
Text
.
h UNITED STATES V
't NUCLEAR REGULATORY COMMISSION E
WASHINGTON, D. C. 20555 80 0515 0 /Yp
$.g t
a May 5,1980
%, * * * * *,e Docket No. 50-302
/
Mr. J. A. Hancock Director, Nuclear Operations Florida Power Corporation P. O. Box 14042, Mail Stop C-4 St. Petersburg, Florida 33733 Dear Mr. Hancock RE: LOSS OF 0FFSITE POWER EVENTS We are currently reviewing the adequacy of the offsite power systems of nuclear power plants and in particular, the loss of offsite power events.
at your facility. One aspect of this review concerns the history of experienced total and partial power outages and attendent degraded voltage or frequency conditions of the grid.
In our review of this matter we have drawn upon the information pro'vided
.I to us via Licensee Event Reports and followup letters which have been sent to us.
Our records do not indicate that you have experienced any loss of offsite power events either completely or partially.
Please review your experiences and, if any are identified, then report them in answer to this letter and furnish the related information as included in the enclosure.
Please provide your response for C;ystal River, Unit No. 3 within 30 days of the receipt of this letter.
Sincerely, Robert W. Reid, Chief Operating Reactors Branch #4 Division of Licensing
Enclosure:
t Requi-t for Additional l
I nt u,.nati on cc w/ enclosure:
.See next page l
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Florida Power Corporation cc w/ enclosure (s):
Mr. S. A. Brandimore Mr. Robert B. Borsum Vice President and General Counsel Babcock & Wilcox P. O. Box 14042 Nuclear Power Generation Division St. Petersburg, Florida 33733 Suite 420, 7735 Old Georgetown Road Bethesda, Maryland 20014 Mr. Wilbur Langely, Chairman
]-
Board of County Ccanissioners Citrus County Iverness, Florida 36250 Bureau of Intergovernmental' Relations U. S. Environmental Protection Agency 660 Apalachee Parkway Region IV Office Tallahassee, Florida 32304 ATIN: EIS C00RDINATDR 345 Courtland Street, N.E.
Atlanta, Georgia 30308 Of rector. Technical Assessment Division Office of Radiation Programs (AW-459)
U. S. Environmental Protection Agency Crystal Mall #2 Arlington, Virginia 20460 Crystal River Public Library Crystal River, Florida 32629 Mr. J. Shreve The Public Counsel Room 4 Holland Bldg.
Tallahassee, Florida 32304 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Attorney General Department of Legal Affairs The' Capitol Tallahassee, Florida 32304 l
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Enciesura LOSS OF OFFSITE POWER SURVEYo
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A.
For losses of offsite power where less than all offsite power was lost:*
1.
How many circuits to the offsite network are normally available and how many were lost during the event?
2.
What was the cause of the event?
3.
Why did the other line's not fail when some did fail?
4.
Was any voltage in~ crease dr decrease experienced just prior to or during the outage? If so, please give details, voltages reached, affects, etc.
5.
Was any frequency decay experienced jus't prior to or during the outage?
If so, please give details, lowest frequency reached, decay rate, affects on equipment op. ration, etc,.
e 6.
How long was poder unavailable from the circuit?
7.
Date of event.
,.B.
For losses of all offsite power:
1.
How long sas the power off? How long for partial recovery?
~
Please give details.
2.
If. turbine trip occurred, how soon after did loss of.offsite power occur?
3.
If power was recovered promptly (10 minutes or less), was it due to automatic or manual actions?
4.
Was any voltage increase or decrease experienced just prior to or during the outage?
If so, please give detials, voltages reached, affects, etc.
5.
Was any frequency decay experienced just prior to or during the outage?
If so, please give details, lowest frequency reached, decay rate, affects on equipment operation, etc.
6.
Date of event.
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