ML15223A591
| ML15223A591 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/05/1980 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Parker W DUKE POWER CO. |
| References | |
| NUDOCS 8005210314 | |
| Download: ML15223A591 (4) | |
Text
'EGUL YFT FILE CO 5 ggM DISTRIBUTION:
ORB#4 Rdg TNovak NRC PDR NRR Rdg RReid L PDR DEisenhut GRivenbark TERA-3 RTedesco RIngram NSIC GLainas ACRS-16 Dockets Nos.UW-269, 50-270 IE-3 and 50-287 60 OELD AEOD Gray-File RCapra Mr. William 0. Parker, Jr.
Vice President, Steam Production Duke Power Company P. 0. Box 2178 422 South Church Street Charlotte, North Carolina 28242
Dear Mr. Parker:
RE:
LOSS OF OFFSITE 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 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 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 the Oconee Nuclear Power Plant, Units Nos.
1, 2 and 3 within 30 days of the receipt of this letter.
Sincerely, oiginal signed by Robert W. Reid Robert W. Reid, Chief Operating Reactors Branch #4 Divisionof Licensing
Enclosure:
Request for Additional Information cc w/enclosure:
See next page 80 0523 ORB*
O L_
- j.
j....
5/3 N /80 5
U/
O80 NAtC FORM 318 19-76) NRCM 0240 '*.U.S.
GOVERNMENT PRINTING OFFICE: 1.979-289-3,69
UNITED STATES NUCLEAR REGULATORY COMMISSION 49 WASHINGTON, D. C. 20555 Mlay 5, 1980 Dockets Nos. 50-269, 50-270 and 50-287 Mr. William 0. Parker, Jr.
Vice President, Steam Production Duke Power Company P. 0. Box 2178 422 South Church Street Charlotte, North Carolina 28242
Dear Mr. Parker:
RE:
LOSS OF OFFSITE POWER EVENTS We are currently reviewing the adequacy of the offsitepower 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 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 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 the Oconee Nuclear Power Plant, Units Nos.
1, 2 and 3 within 30 days of the receipt of this letter.
Sincerely, Robert W. Reid, Chief Operating Reactors Branch #4 Division of Licensing
Enclosure:
Request for Additional Information cc w/enclosure:
See next page
Duke Power Company cc w/enclosure(s):
Mr. William L. Porter Mr. Robert B. Borsum Duke Power Company Babcock & Wilcox P. 0. Box 2178 Nuclear Power Generation Division 422 South Church Street Suite 420, 7735 Old Georgetown Road Charlotte, North Carolina 28242 Bethesda, Maryland 20014 Oconee Public Library Manager, LIS 201 South Spring Street NUS Corporation Walhalla, South Carolina 29691 2536 Countryside Boulevard Clearwater, Florida 33515 Honorable James M. Phinney County Supervisor of Oconee County Walhalla, South Carolina '29621 Office of Intergovernmental Relations Director, Technical Assessment 116 West Jones Street Division Raleigh, North Carolina, 27603 Office of Radiation Programs (AW-459)
U. S. Environmental Protection Agency Crystal Mall #2 Arlington, Virginia 20460 U. S. Environmental Protection Agency Region IV Office ATTN:
EIS COORDINATOR 345 Courtland Street, N.E.
Atlanta, Georgia 30308 Mr. Francis Jape U. S. Nuclear Regulatory Commission P. 0. Box 7 Seneca, South Carolina 29678
LOSS OF OFFSITE POWER SURVEY*
LOSS OF OFF E
~ ~~~Enclosure -
,.'.-., -L.,,..
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 lines not fail when some did fail?
4 Was any voltage increase 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 just 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 power 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), 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.