ML19323B960
| ML19323B960 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/05/1980 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8005140458 | |
| Download: ML19323B960 (3) | |
Text
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itay 5,1980 s
Dockets Nos.
313 and 50-368 Mr. William Cavanaugh, III Vice President, Generation and Construction Arkansas Power & Light Compary P. O. Box 551 Little Rock, Arkansas 72203
Dear Mr. Cavanaugh:
RE: LOSS OF 0FFSITE POWER EVENTS We are currently reviewing the adequacy of the offsite ' power systems of nuclear power plants,1nd 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 provided 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 conpletely 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 Arkansas Nuclear One, Units Nos.1 and 2, within 30 days of the receipt of this letter.
l Sincerely, l
Robert W. Reid, Chief l
Operating Reactors Branch #4 Division of Licensing
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page
' Arkansas Power & Light Cenpany cc w/ enclosure (s):
Phillip K. Lyon, Esq.
Director, Technical Assessment House, Holms & Jewell Division 1550 Tower Building Office of Radiation % grams Little Rock, Arkansas 72201
- (AW-459)
U. S. Environmental Protection Agency Mr. David C. Trimble Crystal %11 #2 Manager, Licensing Arlingte n, Virginia 20460 Arkansas Power & Light Company P. O. Box 551 U. S. Environmental Protection Agency Little Rock, Arkansas 72203 Region VI Office ATTN:
EIS COORDINATOR Mr. James P. O'Hanlon 1201 Elm Stree.:
General Manager First International Building Arkansas Nuclear One Dallas, Texas 75270 P. O. Box 608
~
Russellville, Arkansas 72801 Mr. William Johnson Director, Bureau of Environmental U. S. Nuclear Regulatory Commission Health Services P. O. Box 2090 4815 West Markham Street Russellville, Arkansas 72801 Little Rock, Arkansas 72201 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 420, 7735 Old Georgetown Road Bethesda, M:ryland 20014 Troy B. Conner, Jr., Esq.
Conner, Moore & Corber 1747 Pennsylvania Avenue, N.W.
Washington, D. C.
20006 Arkansas Polytechnic College Russellville, Arkansas 72801 Honorable Emil Grant Acting County Judge of Pope County Pope County ~ Courthouse Russellville, Arkansas 72801 Mr. Paul F. Levy, Director Arkansas Department of Energy 3000 Kavanaugh Little Rock, Arkansas 72205 l
A.
For losses of offsite power where less than all offsite power was lost:*
1.
How manyy circuits to the offsite network are nortnally 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?
Was any voltage in~ crease dr decrease experienced just prior 4.
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 operation, etc ',
6.
How long was poder unavailable from the circuit?
7.
Date of event.
[
,.B., For losses of all offsite power:
1.
How long was 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), wa's it due to automatic or manJal 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.
e 9
e
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