ML18038B914
| ML18038B914 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/11/1997 |
| From: | Abney T TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML18038B915 | List: |
| References | |
| RTR-NUREG-1407 GL-88-20, TAC-M83597, NUDOCS 9707170126 | |
| Download: ML18038B914 (18) | |
Text
CATEGORY 1 REGULATOiINFORMATION DISTRIBUTION ~EM (RIDS)
ACCESSION NBR:9707170126 DOC.DATE: 97/07/11 NOTARIZED:
NO DOCKET ¹ FACIL:50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH.BYNAME AUTHOR AFFILIATION ABNEY,T.E.
Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
Forwards BFN Unit 3 response to GL 88-20,Suppl 4, "IPEEE-FIRE)." Content
& format of rept reflect gu dance of NUREG-1407.
DISTRIBUTION CODE A001D COPIES RECEIVED:LTR I
ENCL
(
SIZE:
43 Q TITLE: OR Submittal: General Distribution NOTES:
RECIPIENT ID CODE/NAME PD2-3 WILLIAMS,J.
INTERNAL: ACRS NRR/DE/ECGB/A NRR/DRCH/HICB NRR/DSSA/SRXB OGC/HDS3 EXTERNAL: NOAC COPIES LTTR ENCL 1
1 1
1 1
1 1
1 1
1 1
1 1
0 1
1 RECIPIENT ID CODE/NAME PD2-3-PD EN R
0 NR NRR/DSSA/SPLB NUDOCS-ABSTRACT NRC PDR COPIES LTTR ENCL 1
1 1
1 1
1 1
1 1
1 1
1 NOTE TO ALL "RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE!
CONTACT THE DOCUMENT CONTROL DESK2 ROOM OWFN 5D-5(EXT. 415-2083)
TO ELIMINATE YOUR NAME FROM DlSTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEEDt TOTAL NUMBER OF COPIES REQUIRED:
LTTR 14 ENCL 13
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Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 36609-2000 July 11, 1997 U.S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.C.
20555 Gentlemen:
In the Matter of
)'ennessee Valley Authority
)
Docket No. 50-296 BROWNS FERRY NUCLEAR PLANT (BFN)
UNIT 3 GENERIC LETTER (GL) 88 20 r SUPPLEMENT 4 r INDIVIDUALPLANT EXAMINATIONOF EXTERNAL EVENTS (IPEEE)
FOR SEVERE ACCIDENT VULNERABILITIES SUBMITTAL OF INTERNAL FIRES ANALYSIS (TAC NO. M83597)
The enclosure to this letter provides the BFN Unit 3 internal fires analysis in accordance with TVA's commitment to GL 88-20, Supplement 4.
TVA committed to submit the Unit 3 internal fires IPEEE within one hundred twenty days after the first refueling outage following restart from the extended recovery outage.
This refueling outage (cycle 7) was completed on March 13, 1997.
The internal fires analysis for BFN Unit 3 was performed in the same manner as Unit 2, using a progressive screening: analysis based on the Fire Induced Vulnerability Evaluation methodology developed by the Electric Power Research Institute.
TVA's analysis showed that there are no 'fire induced vulnerabilities associated with the continued operation of BFN Unit 3.
The content and format of the enclosed report reflect the guidance of NUREG-1407.
The risk assessment process used to generate the report considered the objectives described in GL 88-20, Supplement 4, which provide for (1) an appreciation 9707i70i26 "9707ii PDR ADQCK '050002'Ph p
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I
U.S. Nuclear Regulatory Commission Page 2
July 11, 1997 of severe accident behavior, (2) an understanding of the likely event sequences, (3) a qualitative understanding of the likelihood of core damage and fission product releases, and (4) modifications, where appropriate, of hardware and procedures that would help prevent or mitigate severe accidents.
TVA has previously submitted the BFN Units 1, 2,
and 3
IPEEE analysis of high winds, external floods, and nearby facilities/transportation accidents and the Unit 2 internal fires analysis by letter dated July 24, 1995.
The Units 2
and 3 seismic IPEEE was submitted by. TVA letter dated June 28, 1996.
As previously committed, the internal fires and seismic IPEEE for BFN Unit 1 will be submitted prior to restart.
There are no new commitments contained in this letter.
If you have any questions regarding this report, please contact me at (205) 729-2636.
ncere T. E. Abney Manager Licens an ndustry Af ngairs Enclo re cc:
See
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',I CA
U.S. Nuclear Regulatory Commission Page 3
July ll, 1997 Enclosure cc (Enclosure):
Mr. Mark S. Lesser, Branch Chief U.S. Nuclear Regulatory Commission Region II 61 Forsyth Street, S.W.
Suite 23T85
- Atlanta, Georgia 30303 NRC Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road
- Athens, Alabama 35611 Mr. J.
F. Williams, Project Manager
'U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852
. i V
ENCLOSURE TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)
UNIT 3 GENERIC LETTER 88 20 i SUPPLEMENT 4 I INDIVIDUAL PLANT EXAMINATIONOF EXTERNAL EVENTS (IPEEE)
FOR SEVERE ACCIDENT VULNERABILITIES INTERNAL FIRES ANALYSIS (SEE ATTACHED)
4i iO
'L C
l4 1
'll
Tennessee Valley Authority, Post Office Box 2000. 0 catur. Afaharna M609-2000 July 11, 1997 U.S.. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.C.
20555 Gentlemen:
In the Matter of Tennessee Valley Authority Docket No. 50-296 BROWNS FERRY NUCLEAR PLANT (BFN)
UNIT 3 GENERIC LETTER (GL) 88 2 0 r SUPPLEMENT 4'
INDIVIDUAL'LANTEXAMINATION 'OF EXTERNAL EVENTS (IPEEE)
FOR SEVERE ACCIDENT VULNERABILITIES SUBMITTAL OF INTERNAL. FIRES ANALYSIS (TAC NO. 'M83597)
The enclosure to this letter provides the BFN Unit 3 internal fires analysis in accordance with TVA's commitment to GL 88-20, Supplement 4.,
TVA committed to submit the Unit 3 internal fires IPEEE within one hundred twenty days after the first refueling outage following restart from the extended recovery outage.
This refueling outage (cycle 7) was completed on March 13, 1997.
The internal fires analysis for BFN Unit 3 was performed in the same manner as Unit 2, using a progressive screening analysis based on the Fire Induced Vulnerability Evaluation methodology developed by the Electric Power Research institute.
TVA's analysis showed that there are no fire induced vulnerabilities associated with the continued operation of BFN Unit 3.
The content and format of the enclosed report reflect the guidance of NUREG-1407.
The risk assessment process used to generate the report considered the objectives described in GL 88-20, Supplement 4, which provide for (1) an appreciation
Qi i
U.S. Nuclear Regulatory Commission Page 2
July 11, 1997 of severe accident behavior, (2) an understanding of the likely event sequences, (3) a qualitative understanding of the likelihood of core damage and fission product releases, and'4) modifications, where appropriate, of hardware and procedures that would help prevent or mitigate severe accidents.
TVA has previously submitted the BFN Units 1, 2,
and 3
IPEEE analysis of.high winds, external floods, and nearby facilities/transportation accidents and the Unit 2 internal fires analysis by letter dated July 24, 1995.
The Uni;ts 2
and 3 seismic 1PEEE was submitted by TVA letter dated June 28, 1996.
As previously committed, the internal fires and,seismic IPEEE for BFN Unit 1 will be submitted prior to restart.
'There are no new commitments contained in this letter.
If you have any questions regarding this report, please contact me at (205) 729-2636.
S ncere T. E. Abney Manager Licens an ndustry Af ngairs Enclo ure cc:
See
4 k
J
-U. S. Nuclear Regulatory Commission Page 3
July 11, 1997 Enclosure cc (Enclosure).:
Mr. Mark,S.
Lesser,,
Branch Chief U. S. Nuclear Regulatory Commission Region II 61 Forsyth Street, S.W.
Suite 23T85
- Atlanta, Georgia 30303 NRC Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road
- Athens, Alabama 35611 Mr.. J.
F. 'Wi.'lliams, Project Manager U.S. Nuclear Regulatory Commission One.White Flint, North 11555 Rockville Pike Rockville, Maryland 20852
r.
ENCLOSURE TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)
UNIT 3 GENERIC LETTER 88 20'I SUPPLEMENT 4 I IND IVIDUAL'LANT EXAMINATIONOF EXTERNAL EVENTS (IPEEE)
FOR SEVERE ACCIDENT VULNERABILITIES INTERNAL FIRES ANALYSIS (SEE'TTACHED)
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