ML20086B165
| ML20086B165 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 06/26/1995 |
| From: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20086B167 | List: |
| References | |
| GL-88-20, NUDOCS 9507050203 | |
| Download: ML20086B165 (3) | |
Text
-
Clation support Deprrtment
) fa.
u:
GL 66-20 Sup. 4 -
-- v.
PECO ENERGY Po*C:"L,,,
965 Chesterbrook Boulevard Wayne, PA 19087-S691 E,.. -
June 26,1995 i
Docket Nos. 50-352 i
50-353 I
License Nos. NPF 39 NPF-85 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 r
SUBJECT:
Limerick Generating Station, Units 1 and 2 Response to NRC Generic Lc'ter 38-20 Supplement 4, " Individual Plant Examination of External Events (IPEEE) for Severe Accident Vulnerabilities'
Reference:
- 1) Letter from G. J. Beck (PECO Energy) to NRC dated September 18, 1992
- 2) Letter from G. A. Hunger, Jr. (PECO Energy) to NRC dated February 4,1994
- 3) Letter from G. A. Hunger, Jr. (FECO Energy) to NRC dated December 19,1994
Dear Sir:
NRC Generic Letter (GL) 88-20 Supplement 4, " Individual Plant Examination of Extemal Events (IPEEE) for Severe Accident Vulnerabilities,' dated June 28,1991, requested PECO Energy Company (PECO Energy) to perform an Individual Plant Examination of Extemal Events (IPEEE) of the Limerick Generating Station (LGS) and submit the results to the NRC pursuant to 10CFR50.54(f).
j Reference letter 1 committed PECO Energy to submitting a final report to the NRC by June 30, 1995. Accordingly, the LGS IPEEE Final Report is attached. The IPEEE was conducted in i
accordance with the objectives of GL 88-20 Supplement 4 and the guidance provided in NUREG-1407, " Procedural and Submittal Guidance for the indMdual Plant Examiration of External Events (IPEEE) for Severe Accident Vulnerabilities."
Td7 MM E h P
PDR l
m
d June 26,1995 Page 2 l
. Reference letters 2 and 3 were submitted in response to Generic Letter 9248, "Thermo-Lag 330-1 Fire Barriers," and included details of an integrated analysis program prepared in response to the Thermo-Lag issue. This integrated analysis program includes using the fire safe shutdown re-analysis completed as part of this IPEEE final report to minimize our reliance on Thermo-Lag to achieve safe shutdown. The integrated analysis program in response to GL 92-08, and the Thermo-Lag issue, will also use Irisights gained from this IPEEE final report to prioritize resolution of Thermo-Lag assemblies that remain after the fire safe shutdown re-analysis.
As a result of conducting the LGS IPEEE, PECO Energy identified seismic event and fire event findings. Equipment, structures, and systems at LGS are seismically very rugged; however, actions are being taken to address minor housekeeping and maintenance issues related to the seismic analysis such as unrestrained tools, lockers, hoist controllers and lifting devices for low voltage switchgear. Fire brigade drill activities and fire brigade awareness will te increased for 3 areas in the common control structure. Actinns credited in the fire analysis such as improved transient combustible controls, creation c
..nslent combustible free zones and formal designation of certain fire rated doors as 'tro" doors will be implemented at LGS.
If you have any questions concerning this submittal, or require additional information, please e
contact us.
Very truly yours,
/4, G. A. Hunger, Jr.,
r Director Licensing Section Attachment
Enclosure:
Affirmation ec:
T. T. Martin, Administrator, Region I, USNRC (w/ attachment and enclosure)
N. S. Perry, USNRC Senior Resident inspector, LGS R. R. Janeti, Commonwealth of Pennsylvania
6-COMMONWEALTH OF PENNSYLVANIA i
i
- - SS.
l COUNTY OF CHESTER i
W. H. Smith, III, being first duly sworn, deposes and says:
i That he is Vice President of PECO Energy Company, the Applicant herein; that he has read the response to Generic. Letter l
i No. 88-20 Supplement 4 involving Limerick Generating Station, and l
knows the contents thereof; and that the statements and matters set forth therein are true and correct to the best of his knowledge, information and belief.
l i
e i
Vice President i
i i
i Subscribed and sworn to before me this N day of g
1995.
)
i Y,
0 Not,ary Public Efkm A.Sanen NatsyPutic T
54NesbY996 My
v Limerick Generating Station Units 1 and 2 Incividual P arr:
Examination for External Events 3ECO Energy Co.
June 1995
-i m
Limerick Generating ai Station Units 1 and 2 I
f*
ncividua. Plant Examination "or Externe f
Events I
i t
3 ECO Enercy Co.
t une 1995 1
_