ML18029A385
| ML18029A385 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 02/22/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8503010334 | |
| Download: ML18029A385 (6) | |
Text
ACCESSION NBR:8503010334 DOC ~ DATE. 85/02/22 NOTARIZED:
NO FACIL:50 259 Browns Ferry Nuclear Power Stations Unit 1~
Tennessee 50 260 Browns Ferry Nuclear Power Stations Un)t 2< Tennessee 50 296 Browns Ferry Nuclear Power Station~
Unit 3<
Tennessee AUTH BYNAME AUTHOR AFFILIATION HUFHAMgJ AN ~
Tennessee Valley Authority RECIP, NAME RECIPIENT AFF ILIATION DENTONgH ~ RE Office of Nuclear Reactor Regulationi Director DOCKET 05000259 05000296
SUBJECT:
For wards results of evaluation of imoact of fire door modsi per Exemption 15'll gasket matl will be replaced by labeled gasketing matls 8 plastic signs replaced w/metal signs mechanically
- fastened, DISTRIBUTION CODE:
A006D COPIES RECEIVED:LTR ENCL SIZE:
TITLE! OR Submittal: Fir e Protection NOTES:NMSS/FCAF icy'cy NMSS/FCAF/PM'L:06/26/73 NESS/FCAF icy, icy NMSS/FCAF/PM'L:06/28/74 NMSS/FCAF icy, icy NMSS/FCAF/PM'L:07/02/76 05000259 05000260 05000296 RECIPIENT ID CODE/NAME NRR ORB2 SC 01 INTERNAL~
ACRS 11 ELD/HDS4 NRR HOLONICH 07 NR~RNE/C E B 0 9 F
04 COPIES LTTR ENCL.
3 3
3 3'
0 2
2 2
2 1
1 RECIPIENT ID CODE/NAME ADM/LFMB IE NHITNEY g L NRR WAMBACH 06 NRR/DL D IR RGN2'OPIES LTTR ENCL 1
0 1
1 0
1 1
1 1
EXTERNALS LPDR NSIC NOTES!
03 05 1
1 1
1
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2 NRC PDR 02 TOTAL NUMBER OF COPIES REQUIRED:
LTTR 22 ENCL 19
TENNESSEE VALLEYAUTHORITY CHATTANOOGA. TENNESSEE 37401 1630 Chestnut Street Tower II February 22, 1985 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Dear Mr. Denton:
In the Matter of the Tennessee Valley Authority Docket Nos. 50-259 50-260 50-296 Please refer to L. M. Mills'etter to you dated October 31, 198II regarding Appendix R to 10 CFR 50, Fire Protection, for our Browns Ferry Nuclear Plant.
As committed in that letter, enclosed are the results of an evaluation of the impact of the fire door modifications for exemption No.
15 of our October 31 submittal.
Bill Long of your staff and Mike Hellums of my staff discussed submitting this information to the NRC by February 22, 1985.
If you have any questions, please get in touch with us through the Browns Ferry 'Pro)cot Manager.
Very truly yours, TENNESS E VALLEY AUTHORITY W.
fh censing this' dsy of ku~
Notary Public My Commission Expires Subscrib an/ sworn to efo e me 1985
, Manager d Regulations Enclosure cc (Enclosure):
U.S. Nuclear Regulatory Commission Region II ATTN:
James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. R. J. Clark Browns Ferry Prospect Manager U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue
- Bethesda, Mar yland 2081II 85030i0334 850222 PDR ADOCK 05000259 F
PDR An Equal Opportunity Employer
ENCLOSURE FIRE DOOR MODIFICATION EVALUATION
REFERENCE:
J.
W. HUFHAM'S LETTER TO E.
ADENSAM DATED JANUARY 4,
- 1985, SUBJECT, WATTS BAR NUCLEAR PLANT APPENDIX R FIRE PROTECTION TVA has surveyed the fire doors at BFN that have been modified or changed in some way from the original Underwriters'aboratories (UL) rating criteria.
An inspection of the fire doors was performed utilizing information obtained from a similar walkdwon with representatives from UL at the Watts Bar Nuclear Plant.
The results of that inspection are contained in the referenced letter.
The following is the summary of criteria used in the BFN investigation based on guidelines recommended by UL for WBN.
1.
All gasket material will be replaced by labeled gasketing materials.
2 ~
All plastic signs removed and replaced with metal signs mechanically
- fastened, or the information may be stenciled on the door.
3.
Replace missing screws for metal signs.
All doors should have proper fit in frame with maximum clearance of 1/8 inch.
, 5.
Some of the doors are equipped with clasp and staple type lock. If these are no longer needed, they should be removed and the holes repaired accordingly.
6.
All door frames will be modified as recommended by'L.
7.
Where frame is penetrated by conduit two things are necessary:
a.
A split sleeve must be mounted into frame b.
Conduit must be filled with RTV 800 sealant for a distance of 18 inches from frame penetration.
8.
All doors and frames must have labels on them.
9.
Any door silencer that is missing should be replaced.
10.
Small holes in door may be filled by a sheet metal screw.
No plate may be welded over a hole in the door.
The door will have to be replaced if larger holes are found.
Holes in frames may be repaired using either sheet metal screws or welding a 16-gauge plate over the hole.
- However, TVA proposes not to comply with items 1, 2, and 8 of the UL recommendations.
These three items have been previously addressed in the referenced WBN letter as being unnecessary.
As a result of the investigation, six doors. and four door frames will have to be replaced, and several doors and door frames will need small repairs because of holes or modifications that have been made.
TVA is in the process of doing an engineering evaluation on the door replacement and the. frame work.
These modifications will be performed in accordance with the integrated schedule for Appendix R.
It is TVA~s position that, with the implementation of the corrective
- actions, the fire doors will be restored to a labeled configuration.
1