ML19254D077
| ML19254D077 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 10/01/1979 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Librizzi F Public Service Enterprise Group |
| References | |
| NUDOCS 7910220333 | |
| Download: ML19254D077 (3) | |
Text
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OCT 1 1979 Docket No. 50-272 Mr..F. P. Librizzi, General Manager Electric Production Production Department Public Service Electric and Gas Company 80 Park Place, Room 7221 Newark, New Jersey 07101
Dear Mr. Librizzi:
/
RE:
SALEM NUCLEAR GENERATING STATION, UNIT NO. 1 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 are drawing upon the information you provided in Licensee Event Reports (LERs) and followup letters to the NRC.
Our review of, a number of these LERs indicates that loss of offsite power has occurred at your facility on April 18, 1977, May 14, 1977, June 26, 1977 and June 28., 1977.
In order to complete our review of loss of offsite power events we require response to the enclosed request for information.
We request that you provide your response within 90 days of the receipt of this letter.
Sincerely,
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,e
.(joN L-A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors
Enclosure:
Request for Information
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e Mr. F. P. Librizzi Public Service Electric and Gas Company cc: Mark J. Wetterhahn, Esquire Conner, Moore and Corber Suite 1050 1747 Pennsylvania Avenue, NW Washington, D. C.
20006 Richard Fryling, Jr., Esquire Assistant General Solicitor Public Service Electric and Gas Company 80 Park Place Newark, New Jersey 07101 Gene Fisher, Bureau of Chief Bureau of Radiation Protection 380 Scotch Road Trenton, New Jersey 08628 Mr. Hank Midura, Manager Salem Nuclear Generating Station Public Service Electric and Gas Company 80 Park Place Newark, New Jersey 07101 Mr. R. L. Mitti, General Manager Licensing and Environment Public Service Electric and Gas Company 80 Park Place Newark, New Jersey 07101 Salem Free Library 112 West Broadway Salem, New Jersey 08079 Leif J. Norrholm U.. S. Nuclear Regulatory Commission Drawer I Hancocks Bridge, New Jersey 08038
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t ATTACHMENT 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 or decrease experier.ced 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.
3.
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 details, voltages reached, affects, etc.
5.
Was any frequency decay experiu-ed just prior to or during the outage?
If so, please give details, lowest frequency reached, decay rate, affects on equipment operation, etc.
6.
Cate of Event.
C.
Were there any other loss of offsite pcwer events otnar than we have listed?
If so, please give details of each event.
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