ML18036B329
| ML18036B329 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 06/14/1993 |
| From: | Salas P TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TAC-M59073, NUDOCS 9306210022 | |
| Download: ML18036B329 (6) | |
Text
ACCELERATF DOCUMENT DISTRjUTION SYSTEM REGULAT INFORMATION DISTRISUTIOtISTEM (RIDS)
ACCESSION NBR:9306210022 DOC.DATE: 93/06/14 NOTARIZED: NO DOCKET FACIL:50-240 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 AUTH MNAME AUTHOR AFFILIATION SALAS,P.
Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATXON Document Control Branch (Document Control Desk)
SUBJECT:
Notifies of implementation of alternate rod injection design per ATWS rule 10CFR50.62,including.
equipment a mfg diversity.
DISTRIBUTION CODE:
D030D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: TVA Facilities Routine Correspondence NOTES:
R D
RECIPIENT ID CODE/NAME COPIES LTTR ENCL RECIPIENT ID CODE/NAME COPIES LTTR ENCL INTERNAL: ACRS OC ~F5)CB EG ILE EXTERNAL: NRC PDR Ol NRR/DSSA OGC/HDS3 RES/DE/SSEB/SES NSIC D
D D
D NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTEI CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAMEFROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEEDI D
~
S TOTAL NUMBER'F COPIES REQUIRED:
LTTR 13 ENCL
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Tennessee Valley Authority. Post Office Box 2000. Decatur. Alabama 35609 JUN 14 1993 U.S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.C.
20555 Gentlemen:
In the Matter of Tennessee Valley Authority Docket Nos.
50-260 BROWNS FERRY NUCLEAR PLANT (BFN) - COMPLETION OF ANTICIPATED TRANSZENTS WITHOUT SCRAM (ATWS) RULE (I.O CFR 50'2)
COMMITMENTS FOR UNIT 2 (MPA A 2 0 i TAC NO e.f)59 073 )
References:
1), TVA letter to NRC, dated May 24,
- 1993,
'Completion.of Commitments'or Unit 2 Cycle 6
Outage and Response to Related Issues 2)
TVA letter to NRC, dated November 29,
Response
to NRC Followup Items Received During ATWS Inspection 3)
NRC letter to TVA, dated December 17,
- 1990, Notice of Violation (NRC Inspection Report Nos. 50-259/90-33, 50-260/90-33, and 50-296/90-33)
This letter provides notification of the implementation of an alternate rod injection design that is in full compliance with the ATWS Rule, including equipment/manufacturing diversity.
TVA committed to provide this notification as part of the Unit 2 Cycle 6 outage completion letter (Reference 1).
As committed in TVA's response (Reference
- 2) to an ATWS inspection (Reference 3),
TVA has installed analog trip units (ATUs) from General Electric in the Alternate Rod Injection (ARI) system.
These ATUs are diverse from the existing Rosemount ATUs installed in the Reactor Protection System (RPS).
9306220022'30624 PDR-ADOCK 050002h0 P
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U.
S. Nuclear Regulatory Commission
'JUN 14 1993 Also as committed in Reference 2:
- 1) 'TVA replaced the existing solenoid valves with valves that contain position switches and provided valve position indicating lights, and 2)
TVA revised the applicable Surveillance Instruction to require once per cycle functional testing of the ARI solenoid valves.
There are no additional commitments contained in this letter.
If you have any questions, please telephone me at (205) 729-2636.
Sincerely, Pe ro Salas Manager of Site Licensing ccrc NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637
- Athens, Alabama 35611 Mr. Thierry M. Ross, Project Manager
'U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike
.Rockville, Maryland.20852 U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
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