ML18024A768
| ML18024A768 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Oconee  |
| Issue date: | 04/10/1979 |
| From: | Gilleland J TENNESSEE VALLEY AUTHORITY |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7904130219 | |
| Download: ML18024A768 (4) | |
Text
REGULATORY INFORMATIOiN OISTRIOUTION SYSTEM (RIDS)
ACCESSION NBR:7904130219 ODC ~ DATE: 79/04/10 NOTARIZED:
NO DOCKET ¹ F ACIL.:50 259 BROWiVS FERRY NUCLEAR POItiKR S l'ATION
'UNIT 1
TENNESSEE 05000259 RO<rNS FERRY NUCLEAR PO'AER STA T ION g UNI T 2g TENNESSEE 05000260 50 296 0@NS FERRY NUCLEAR POI'E'ER STATION UNIT 3 TENNESSEE 05000296'U HE AUTHOR AFF ILI AT ION GILLELAIVDIJ ~ E ~
TKNiVESSEE VALLEY AUTHORITY VECIP,NAME RECIPIENT AFFILIATION STELLO, V.
DI V I SION OF PROJECT MANAGEMENT
SUBJECT:
RESPONOS TO IE -SULLET IN 79-01
~ DETER)II VES STEM MOUNTED LIMIT SW'I TCHES DN TFSTABLK CHECK VALVES IN CORK SPRAY SYS ARE SAME TYPE AS REFERENCED IN IE SULLETIN 79~01,SHITCHKS HAVE NO SAF ETY OR COiVTROL FUNCTIONS ~
01S lRIHUTION CODE:
A0015 COPIES RECEIVED:LTR
/
ENCI. <
SIZE!
TITLE: GENERAL DISTRISUTION FOR AF TER ISSUANCE OF OPERATING I.IC iVOTES:
REC IP IKNT ID CODE/NAME ACTIONS 05 BC 6R8 ~M INTERNAL:
REG F ILE 1
15 CORE PERF SR 1I ENGR OR 19,PLANT SYS OR 21 EFLT TRT SYS EXTERNAL: 03 LPOR 23 ACRS COPIES L TTR ENCL 1
16 1
RKC I P IENT IO COOK/NAME 02 iVRC POR 14 TA/EDO 16 AD SYS/PROJ 16 REAC SFTY OR 20 EEB 22 BR INKMAi4 04 NSIC COP IES LTT R ENCI 0
TOTAL NUMOER OF COPIES REQUIRED:
LTTR 36 KNCI.
I FNN=SS" 7 /ALL=f AUTHORIT'f c'HA i i AilCOQA. i F~liVKSSE= 3740 l 500C Chestnut Street Tower II April 10, 1979
>fr. Victor Stello, Director Division of Operating Reactors Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Hr. Stello:
This report is in further response to James P. O'Reilly's letter to H.
G. Parris dated February 8, 1979, which enclosed IE Bulletin 79-01.
We have determined that stem-mounted limit switches on testable check valves in the core spray system at Browns Perry units 1, 2, and 3 are of the same type referenced in IE Bulletin 79-01.
The only function of this switch is to provide remote position indication of the valve's rotary test actuator which is used to exercise the valve disc.
A separate magnetic switch (which has been environmentally qualified) is used to indicate actUal valve disc position.
The limit switch has no control or safety functions and its operation is not required during a LOCA.
Therefore, the safe operation of the Browns Ferry units is not compromised in any way.
Supplemental information will be provided in the 14-day followup report.
Very truly yours, J.
E. Gilleland Assistant ifanager of Power cc:
i~fr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II Suite -3100 101 Marietta Street Atlanta, Georgia 30303
4 4
I