ML14190A560
| ML14190A560 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 05/06/1980 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Jackie Jones Carolina Power & Light Co |
| References | |
| NUDOCS 8005270028 | |
| Download: ML14190A560 (4) | |
Text
DISTRIBUTION MAY S 1980 Docket File 0-26, NRC PDR Local PDR TERA NSIC NRR Reading Docket No.
50-261 ORBI Reading D. Eisenhut T. Novak S. Varga Mr. J'. A. Jones D Neiga Senir EecuiveD.
Neighbors.
Senior Executive Vice President C. Parrish Carolina Power and Light Company I&E (3) 336 Fayetteville Street
- Attorney, OELD
'Raleigh, North Carolina 27602 G. Lainas
Dear Mr. Jones:
RE: H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT'NO. 2 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 attendant 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 to us within O'days of the receipt of this letter.
Sincerely, griginal signed by8
- 5. A. Varga Steven A. Varga, Chief Operating Reactors Branch #1 Division of Licensing
Enclosure:
Re-rt ditional 0~ 1
-Fc:
w/enclosure DL j
DATE 05.0:j
- 0.
.80 RC FORtM 318 (976) NR (C 0240 U.S. GOVERNMENT PRINTING OFFICE: 1a7S - 245 -74k
P-uE Docket No.
50-251 Mr.
- j.
A.
9Jones Senior Executive Vice President Carolina Power and Light Company 336 Fayettevil 1e Stpeet
- Raeigh, North Carolina 27602 Dear Mr.
Jones:
RE:
.BROBINSON STEAM ELECTRIC PLANT, UNIT NO.
2 We are currcntly re iewi ng the adequacy of. the offsite power systems o
nuclea wr plants and in particular, the loss f 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 Licensve Event Reports and folowup letters which have bEen sent to us.
Cur records do not indicate that you have ex prIinced any CS f of fs ite power events either compl ete ly o partially.
P1ease review your eXperiences and, if any are identified, t02n report them in answer to this letter anc furnish the related information as included in the enclosure.
e~ae provide Vour responst to us within 30 days of the receipt of this letter.
Sincerely, ve C i Oprating Reators ranch I1 Division of Licensing
Enclosure:
Request for Additional informat100 cc:
w/enclosure See next page.
8005 2700
U.(g).
u(1)
Crolina Power and Light Company cc:
G. F. Trowbridge, Esquire Shaw, Pittman, Pctts and Trowb ridce 1800 M Street, NW Washington, D. C. 20035 HertsviIle Memorial Library Home and Fifth Avenues Hartsville, South Carolina 29550 Michael C. Farrar, Chairman Atomic Sfet and Licnsg Appeal Board Paiel U. S. Nuclear Regulatory Comission Washington, D. C. 20555 Richard S. Salzman Atomic Safety and Licensing Appeal Board Panel U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Dr. W. Reed Johison Atomic Safety and Licensing Appeal Board Panel U. S. Nuclear Regulatory Comnission Washington, 0. C. 20555
S OF OFSITE POWER SURVEY*
A.
For losses of offsite power where less than all offsite power was lost: *
- 1.
Ho:w 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 d-1d the other lines not fail when some did fail?
- 4.
Was anv voltae increase or decrease experienced just prior to or dur-in the outage?
if so, please give details, voltages reach,ed, a cts, etc.
- 5.
Was any frequency decay experienced jus, prior to or during the outaCe?
If so, please give details, lowest frequency reached, decay rate, affects on equipmezit 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),.as it due to automatic or manual actions?
- 4.
Was any voltage increase or decrease experienced just prior to or during the cutage?
If so, please give detials, voltages reached, affects, etc.
- 5.
Was any frequency decay experienced just prior to or during the outae?
If so, please give details, lowest frequency reached, de cay rate, affects on equiment operation, etc.
E.Date of event.