ML20125A942
| ML20125A942 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 12/04/1992 |
| From: | Fenech R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-92-001, IEB-92-1, TAC-M77750, NUDOCS 9212090134 | |
| Download: ML20125A942 (3) | |
Text
., -.
d" a=
- p ;-_,
-/
- ~ - - - - - _-
t Tenocscee Vat cfAuthoray, Post O de Bow PfD1 Soddy Datsy. Tonressee 3?379 pryy) l<
t Robert A. Fenoch Vro Preset Sewfah f trJear Plant Decemuer 4 -1992 U.S. Nuclear Regulatory Commission ATIN: Document Control Desk Washington, D.C. 20555 Gentlemen:
In the Matter of
)
Docket Nos. 50-327 Tennessee Valley Authority
)
50-328 SEQUOYAH NC EAR PIANT (SQN) UNITS-1 AND 2 - WITHDRAWAL OF 10 CFR 50 APPENDIX R DEVIATION REQUEST (TAC NO. M77570)
Reference:
WA letter to NRL dated January 28, 1991, "Sequoyah Nuclear Plant (SQN) Units 1 and.2 - Deviation Request From Raq"irements of 10 CFR 50 Appendix R.Section III.G.2" TVA requested a permanent deviation from 10 CFR 50, Appendix R requirements in the referenced letter. The deviation request indicated that the cables in question were wrapped with a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> fire barrier.
~This 1-hour fire barrier is Thermo-Lag.. Based on the information received by TVA in NRC Bulletin 92-01 and NRC Bulletin 92-01, Supplement 1, the-qualification of Thermo-Lag as a fire barrier is presently indeterminate. WA is therefore withdrawing the referenced deviation request.
SQN presently has 1-hour, roving fire watches in this area as required by SQN technical specifications. Therefore, no additional compensatory actions are required.
Appropriate actions to verify or restore fire barrier operability are being dece'oped through an industry program being coordinated by NUMARC.
TVA vi: (
ut.piy the results of these efforts, when completed, to the Thermo-u s invita11ations within the scope of Bulletin 92-01.
TVA may also develop its.own program for resolution of this issue to support specific schedule requirements for units under construction.
i.
9212090134 921204 i
PDR 'ADOCK 05000327 F
.PDR--
l /}
n
l s
'e r.
-U.S.~ Nuclear. Regulatory Commission Page 2 December 4, 1992 Once results of an approved Thermo-Lag' qualification program are finalized. TVA will readdress the subject deviation request.
If you have any questions regarding this response, please telephone i"
K. E. Meade at (615) 843-7766.
Sincerely, Robert A. Fenech ccr Mr. D. E. LaBarge, Project Manager U.S. Nuclear Reguintory Commiss.:on One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739' NRC Resident Inspector Sequoyah Ncclear Plant
.l 2600 Igou F rry Road Soddy-Daisy, Tennessee 37379-3624 Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta-Street, NW, Suite 2900 Atlanta, Georgia 30323-0199
?
ad w
-vg 4
)
5 W
9
- i4-
' 4
?
e U.S. Nuclear Regulatory Commission-Page 3-December 4, 1992 MAC:RRT:KEM:JIS cc R.-J.
Beecken, POB 2D-8QN.
M. J. Burzynski, LP 58-C J. R. Bynum, LP 3B-C E. S. Christenbury, ET 11H-K W. R. Cobean, Jr., LP 3B-C M._A. Cooper, OP3 /C-SQN L. M. Cuoco, LP 5B-C M. J. Fecht, LP SB-C-T. A. Flippo, SB IC-SQN R. W. Huston, Rockville Licensing Ollice E. T. Landrey, MR 2C-C T. J. McGrath -LP 3B-C M. O. Medford, LP 3B-C G. R. Mullee, BR SD-C Nuclear Experience Review Files, OPS 4D-SQN D. E. Nunn, Jr., LP 3B-C Senior Vice President, LP 3B-0 SQN Compliance Files OPS 4D-SQN J. N. Ward OPS 4H-SQN RIMS, MR 2F-C (Re:
L44 910128 805)
PLO90204/2190 p.-