ML17157A000
| ML17157A000 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 01/31/1990 |
| From: | Thadani M Office of Nuclear Reactor Regulation |
| To: | Keiser H PENNSYLVANIA POWER & LIGHT CO. |
| References | |
| TAC-72483, TAC-72484, NUDOCS 9002120242 | |
| Download: ML17157A000 (7) | |
Text
January 31, 1990 Docket Nos.
50-387 AND 50-388 Mr. Harold W. Keiser Senior Vice President-Nuclear Pennsylvania Power and Light Company 2 North Ninth Street Al 1 entown, Pennsy 1 vani a 18101 DISTRIBUTION NRC PDR Local PDR PDI-2 Reading SVarga BBoger WButler Mo'Brien MThadani JStone OGC EJordan ACRS (10)
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Dear Mr. Keiser:
SUBJECT:
FOLLOWUP OF DIESEL GENERATOR CRANKCASE EXPLOSION EVENTS (TAC NOS.
72483 AND 72484)
RE:
SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1
AND 2 During the past few weeks your staff and the NRC staff have been in close communication relative to progress towards assessing the root causes of the diesel generator crankcase explosions experienced at Susquehanna.
During those discussions, it has become apparent that there are differing views on the likely causes of the explosions and the remedies to minimize the potential for the diesel generators to not perform their intended function under postulated accident conditions.
In order to deal with the differing views, we are reviewing
'll activities related to the evaluation of the root cause(s) of crankcase explosions and possible corrective action(s) and have developed the enclosed
., request for additional information.
We request that you assist us in our reviews, and provide us your response to the enclosed request for additional information in a timely manner as discussed with your staff during the telephone conversation of January 30, 1990.
Sincerely,
Enclosure:
As stated
/S/
Mohan C. Thadani, Project Manager Project Directorate I-2 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation ETTER]
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Docket Nos.
50-387 AND 50-388 l
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 January 31, 1990 Mr. Harold W. Keiser Senior Vice President-Nuclear Pennsylvania Power,and Light Company 2 North Ninth Street Al 1 entown, Pennsy lvani a 18101
Dear Mr. Keiser:
SUBJECT:
FOLLOWUP OF DIESEL GENERATOR CRANKCASE EXPLOSION EVENTS (TAC NOS.
72483 AND 72484)
RE:
SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1
AND 2 During the past few weeks your staff and the NRC staff have been in close communication relative to progress towards assessing the root causes of the diesel generator crankcase explosions experienced at Susquehanna.
During those discussions, it has become apparent that there are differing views on the likely causes of the explosions and the remedies to minimize the potential for the diesel generators to not perform their intended function under postulated accident conditions.
In order to deal with the differing views, we are reviewing all activities related to the evaluation of the root cause(s) of crankcase explosions and possible corrective action(s) and have developed the enclosed request for additional information.
We request that you assist us in our reviews, and provide us your response to the enclosed request for additional information in a timely manner as discussed with your staff during the telephone conversation of January 30, 1990.
Sincerely,
Enclosure:
As stated Mohan C. Thadani, Project Manager Project Directorate I-2 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation
REQUEST FOR ADDITIONAL INFORMATION REGARDING DIESEL ENGINE R NKCASE P
I N
ENCLOSURE 1.
Please provide a set of the PPKL test design and procedures for the proposed intake air temperature test program.
2.
If PPKL decides to make the service water modifications:
what would be the scope of work; how would the modifications be made; and how long would it take to have all the machines modified?
3.
While the root cause analyses are in progress and possible modifications are in progress, what compensatory measures would PP&L take relative to:
offsite power; diesel generators; and dc power systems?
4.
When does PPSL plan to change the lube oil for the diesel engines?
5.
We propose to have a meeting in Rockvi lie, MD (White Flint) on February 8 or 9, 1990.
PPSL should invite both Cooper and Riccardo representatives to that meeting.
Please confirm your plan to support this meeting.
6.
We propose to hold another meeting in Rockvi lie, MD with PPSL after the proposed tests are completed.
A tentative date of February 21, 1990 is proposed for the second meeting.
Please confirm your plan to support this meeting.
r
Mr. Harold W. Keiser Pennsylvania Power 5 Light Company Susquehanna Steam Electric Station Units 1
8 2
CC Jay Silberg, Esq.
Shaw, Pittman, Potts 8 Trowbridge 2300 N Street N.W.
Washington, D.C.
20037 Bryan A. Snapp, Eso.
Assistant Corporate Counsel
~ennsylvania Power 8 Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr..'.. M. Kenny Licensing Group Supervisor Pennsylvania Pnwer 5 Light Company 2 North Ninth Street A11entown, Pennsylvania 18101 Mr. Scott Barber Senior Resident Inspector U.
S. Nuclear Regulatory Commission P.O.
Box 35 Berwick, Pennsylvania 18603-0035 Mr. Thomas M. Gerusky, Director Bureau of Radiation Protection Resources Commonwealth of Pennsylvania P.
O.
Box 2063 Harri sburg, Pennsyl vani a 17120 Mr. Jesse C. Tilton, III Alleoheny Elec. Cooperative, Inc.
212 Locust Street P.O.
Rox 1266 Har risburg, Pennsyl vani a 17108-1266 Mr. S.
R. Ungerer Joint Generatinn Pro.',ects Department Atlantic Electric P.O.
Box 1500 1199 Black Horse Pike Pleasantville, New lersey 08232 Regional Administrator, Reoion I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Mr. R.. G. Byram Superintendent of Plant Susquehanna Steam Electric Station Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr. Herbert D. Woodeshick Speciai Office of the President.
Pennsylvania Power and Light Company 1009 Fowles Avenue Berwick, Pennsylvania 18603
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