ML19260C666
| ML19260C666 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 12/13/1979 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Bauer E PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| NUDOCS 8001080268 | |
| Download: ML19260C666 (3) | |
Text
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UNITED STATES
[ ])er, g7, NUCLEAR REGULATORY COMMISSION 5 \\ ^ j : E WASHINGTON, D. C. 20555 g b
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DECEEER 131573 Docket Nos. 50-277 and 50-278 Mr. Edward G. Bauer, Jr., Esquire Vice President and General Counsel Philadelphia Electric Company 2301 Market Street Philadelphia, Pennsylvania 19101
Dear Mr. Bauer:
We are currently reviewing the adequacy of the offsi e 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 Peach Bottom Atomic Power Statir : to us within 90 days of the receipt of this letter.
Si ncerely,
s Thomas ppo to, Chief Operating Reactors Branch #3 Division of Operating Reactors
Enclosure:
Request for Additional Information 1702 262 soou,so Woi f
Mr. Edward G. Bauer, Jr.
Philadelphia Electric Company
-2 cc:
Eugene J. Bradley Philadelphia Electric Company Assistant General Counsel l
2301 Market Street Philadelphia, Pennsylvania 19101 Troy B. Conner, Jr.
1747 Pennsylvania Avenue, N. W.
Washington, D. C.
20006 Raymond L. Hovis, Esquire
~35 South Duke Street York, Pennsylvania 17401 Warren K. Rich, Esquire Assistint Attorney General Departhent of Natural Resources Annapelis, Maryland 21401 Government Publications Section State Library of Pennsylvania Education Building Commonwealth and Walnut Streets Harrisburg, Pennsylvania 17126 M. J. Cooney, Superintendent Generation Division - Nuclear Philadelphia Electric Corpany 2301 Market Street Philadelphia, Pennsylvania 19101 Edward Greenman U. S. Nuclear Regulatory Comission Office of Inspection and Enforcement Peach Bottom Atomic Power Station P. O. Box 399 Delta, Pennsylvania 17314 Philadelphia Electric Company ATTN:
Mr. W. T. Ullrich Peach Bottom Atoric Power Station Delta, Pennsylvania 17314 1702 263
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REOUEST FOR ATITIONA*. IS C F.* TION A.
For losses of offsite power where ~. esc tF.an all effsi:e p:wer was lost:
. 1.
How many circuits to the offsi:e net ork are ncn ally available and how many were lost during the even ?
2.
What was the cause of the event?
- 3.. Why did the other lines not fail whe.. so e did fail?
4.
Was any voltage increase or de:rease expsrierced just prior to or during the outage?
If so, please give details, vcl ages rea:hed, affects, etc.
5.
Was any frequency decay experienced fust p-i:r t: cr during the outage?
If so, please give details, iosest f e: van:y reached, decay rate, affects on equipment operation, etc.
6.
How long was power unavailable from the :irc:it?
7.
Date of Event.
B.
For losses of all offsite power:
1.
How long was the power off? How lor; fcr pa-tial recovery?
Please give details.
2.
If turbine trip occurred, how soon after dic loss of offsite power occur?
3.
If power was recovered promptly (10 r.in'.:es :r less), was it due to automati:
or manual actions?
4.
Was any voltage increase or de:reass ex: erie,ced jus: prior to or during the outage?
If so, please give detai~.s, voltages reached, affects, etc.
5.
Was any frequency decay experienced jus: prior to or during the outage?
If so, please give details, lowest # req.ency rea:hed, decay rate, affects on equipment operation, etc.
6., Date of Event.
C.
Were there any other loss of of#s'te oc-e Ever. s ::.er than we have listed?
If so, please give cetails of eac ever..
1702 264