ML20101F044

Suppls 900320,0627,1211 & 920114 Responses to NRC Bulletin 88-010, Nonconforming Molded-Case Circuit Breakers. Molded-case Breakers Replaced During Cycle 5 Refueling Outage Listed on Encl

ML20101F044
Person / Time
Site:	Sequoyah
Issue date:	06/15/1992
From:	Joshua Wilson TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-010, IEB-88-10, NUDOCS 9206240235
Download: ML20101F044 (6)

Text

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June 15, 1992 U.S. Nuclear Regulatory Commission AT7N: Document Control Desk Washingten, D.C. 20555 Gentlemen! >

In the Matter of ) Docket No. 50-328 Tennessee Valley Authority )

SEQUOYAH NUCLEAR PLANT (SQN) - NRC BULLETIN 88-10, NONCONFGRMING ,

MOLDED-CASE CIRCUIT BREAKERS

References:

1. TVA letter to NRC dated January 14, 1992

2. TVA letter to NRC dated December 11, 1990

3. TVA letter to NRC dated June 27, 1990

4. TVA letter to NRC dated March 20, 1990 In response to Reporting Requirement 2 of the subject bulletin, the enclosure of this submittal provides a list of the molded-case circuit breakers replaced during the Unit 2 Cycle 5 refueling outage. As allowed by Action 5 of the bulletin, TVA has opted to replace untraceable breakers in lieu of testing, in accordance with Action 7 of Bulletin 88-10. The replacement breakers meet the criteria of Action 7 of the bulletin and fulfill the requirement, when combined with the previously replaced breakers listed in References 1, 2, and 3, to replace all of the untraceable circuit breakers before start-up from the second refueling outage beginning after March 1, 1989, for Unit 2.

Please note that Package _No. 10.03, which previously supplied Auxiliary Feedwater Pump A Pressure Control 2-PIC-3-122A, as indicated in Reference 4, has been converted to Reactor Vessel Ucad Vent Throttle Valve Controllers HIC-68-397 and FM-68-397B through the modification process. The end device for this package has been revised accordingly in the enclosure.

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4 U.S. Nuclear Regulatory Connission Page 2 June 15, 1992 Replacement of the breakers shown in the enclosure, along with the breakers reported in References 1, 2, and 3, completes the required activities for SQN compliance with NRC Bulletin 88-10.

No commitments are contained in this submittal. Please direct questions concerning this issue to K. C. Weller at (615 ) E 1-7527.

Sincerely.

j/L. Wilson Enclosure cc (Enclosure):

Mr. D. E. LaBarge, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37370

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Mr. B. A. Wilson, Project Clief U.S. Nuclear Regulatory Comm.ission Region II 101 Marietta Street, NW, Suite 7900 Atlanta, Georgia 30323

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1. 4 ENCLOSURE

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UNTRACUABLE MOLDED-CASE-CIRCUIT BREAKERS REPIACED-DURING THE UNIT 2 CYCLE 5 REFUELING OUTAGE

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SEQUOYAH NUCLEAR PLANT NRCB 88-10 REPLACED MOLDED-CASE CIRCUIT BREAKERS-ENCLOSURE BKR RAT 4 PKG MFR PART NO. ING BOARD AND COMPARTMENT AFFECTCD END J VICE MANUFACTURED NO. .

u KB3 200 200 l 2-PNLB-202-SC-A, LOAD SHEDDING WESTINGHOUSE 6.30 480V ERCW MCC-2A SHUNT TRIP i BKR -- BKR FOR 480V ERCW MCC 2A-A ON 6.9KV SD LOGIC PNL 2A WESTINGHOUSE FB 3020 20 12.10 480V ERCW MCC 2A-A, ERCW PUMP!NG STAfl0N COMPT 4FL UNIT HEATER J HE!WEMANN CF2-243-1 15 14.20 120VAC VITAL INSTRUMENT POWER INCORE TEMPERATURE MONITORING j BOARD 2-II, BKR 13 SYSTEM HEINEMANN CF2-Z43-1 15 14.30 120VAC VITAL INSTRUMENT POWER INCORE TEMPERATURE HC4!TORING l BOARD 2-I, BKR 13 SYSTEM WESTINGHOUSE HLA 2600 600 25.20 125VDC VITAL BATTERY BOARD 11 125VDC BATTERY BD 11 OR V PNL 0, BKR COT PERFORMANCE TEST TERMINALS WESTINGWJUSE HLA 2600 600 25.40 125VDC VITAL BATTERY BOARD IV 12SVDC BATTERY BD IV OR V PNL 0, BKR 001 PERFORMANCE TEST TERMINALS WESTINGHOUSE HKA 2100 100 26.11 125VDC VITAL 8ATTERY BOARD IV UNIV-c ANNUNCIATOR PNL 2-L-237 PNL-3, BKR-328 GENERAL ELECTRIC TED 136020WL 20 31.10 480V REACTOR VENT BOARD 2A-A ' REACTOR LOWER COMPARTMENT COMPT 60 HEATER 2A GENERAL ELECTRIC THED 136100WL 100.

34.10 480V REACTOR VENT BOARD 2A A AUXILIARY AND CONTROL BLDG COMPT 1102 480V RECEPTACLES GENERAI ELECTRIC THED ' P 3 + 100 40.10 480V REACTOR VENT BOARD 2A-A CONTAINMENT PURGE EXHAUST FAN COMPT 30 2A GENERAL ELECTRIC THED 12

• - 100 40.20 480V REACTOR VENT BOARD 28-B CONTAINMENT PURGE EXHAUST TAN COMPT 2A 2B GENERAL ELECTRIC THED 136050WL 50 40.50 480V REACTOR VENT BOARD 2A-A CONTAINMENT PURGE SUPPLY FAN COMPT 9C 2A CENERAL ELECTRIC TRED 136050WL 50 40.60 480V REACTOR VENT BOARD 28-B CONTAINMENT PURCE AIR SUPPLY COMPT TC FAN 28 GENERAL ELECTRIC THED 136015WL 15 67.31 480V REACTOR MOV BOARD 281-8 SIS BIT INLET SHUTOFF COMPT 11A VALVE 2-FCV-063-040 CF2-Z51-1 15 NSSS AUX RELAY PANEL 2-R-$8, HEINEMANN 80.01 120VAC VITAL INSTRUMENT POWER BOARD 2-!!,.BKR 24 "C" BUS L _--__ _ .

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05/20/92 SEQUOTAM WJCLEAR PLANT -

NRC8 58-10 REPLACED MOLDED-CASE CIRCUIT BREAKERS ENCLOSURE BKR PKG RAT NO. BOARD AND COMPARTMENT AFFECTED END DEVICE MANUFACTURER MFR PART NO. ING 80.02 120VAC VITAL INSTRUMENT POWER SEPARATION AUX RELAY PANEL HEINEMANN CF2-251-1 15 BOARD 2-1, BKR 23 2-R-76, "A" BUS 80.03 120VAC VITAL INSTRUMENT POWER RX VESSEL HD VENT THROTTLE HEINEMANN CF2-Z51-1 15 BOARD 2-;11, BKR 24 VALVE CONTROLLER, HI C-68-397, FM-68-3978 80.04 120VAC V!TAL INSTRUMENT POWER NSSS AUX RELAY PANEL 2-R-55, HEINEMANN CF2-Z51-1 15 BOARD 2-IV, BKR 25 as" BLS 80.05 120VAC VITAL INSTRUMENT POWER SEPARATION AUX RELAY PANEL HEINEMANN CF2-Z51-1 15 BOARD 2-11, BKR 26 2-R-75, "B" BUS 80.08 480V ERCW MCC 2A-A, ERCW PUMP!NG STATION DUPLEX WESTINGHOUSE MCP 0358CR 7 COMPT 4A SUMP PUMP 2A-A, PUMP A 80.09 480V ERCW MCC 2A-A, ERCW PUMP!NG STATION DUPLEX WESTINGHOUSE MCP 0358CR 7 COMPT 48 SUMP PUMP 2A-A, PUMP B 80.11 125VDC VITAL BATTERY BOARD IV, U-2 ROD DRIVE PWR SUP SWGR BKR WESTINGHOUSE HFB 2015 15 PNL 3, SKR 317 28, PNL 2-L-1159 80.15 120VAC VITAL INSTRUMEWT POWER SEPARATION AUX RELAY PANEL NE!NEMANN CF2-Z31-1 13 BOARD 2-11, BKR 23 2-R-76, "B" BUS 80.18 480V REACTOR VENT BOARD 28 B, INCORE FLUX DETECTOR CRIVE GENERAL ELECTRIC THED 136020WL 20 COMPT 102 UNIT 2C 80.19 480V C & A VENT 50ARD 2A2-A, 480V BOARD ROOM 2A UNIT HTR GENERAL ELECTRIC THED 136020WL 20 COMPT 101 80.21 480V ERCW MCC 2A-A, ERCW MCC 2A-A SUPPLY FAN 2A WESTINGHOUSE MCP 31$0CR 15 i COMPT 4C 80.23 125VDC VITAL BATTERY BOARD U2 GEN AU:: PANEL ANNUNCIATOR WESTINGHOUSE HFB 2015 15 Ill, PNL 3, BKR 315 2-L-39 80.24 480V REACTOR VENT B MRD 2A-A, INCORE FLUX DETECTOR DRIVE' GENERAL ELECTRIC THED 136020WL 20 COMPT 1E UNIT 2F 80.26 4COV REACTOR MOV BOARD 2A2-A, LOOP 1 DEAERATION LINE VLV CENERAL ELECTRIC TED 136020WL 20 COMPT 188 2-fCV-3-191 80.27 480V DSL AUX BOARD 2El-B, 480V POWER OUTLETS GENERAL ELECTRIC THED 136100WL 100 COMPT 4C1 4

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SEQUOYAN NUCLEAR PLANT NRCS 88-10 REPLACED MOLDED-CASE CIRCUIT BREArERS ENCLOSURE BKR PKG RAT NO. BOARD AND COMPARTMENT AFFECTED EMD DEYlCE MANUFACTURER MFR PART NO. ING 80.28 125VDC VITAL BATTERY BOARD I, CAS WASTE DISPOSAL PAWEL WESTINf HOUSE HFB 2030 30 PNL 2, BXR 215 0-L-2C 80.31 480V REACTOR VENT BOARD 23 9, CONTROL BAY SUMP PUMP 2 GENERAL ELECTRIC THED 136020WL 20 COMPT TE1-80.32 125VDC VITAL BATTERY BOARD 1, 125V BATTERY I OR V WESTINGHOUSE HLA 2600 600 PNL 0, BKR 001 PREFORMANCE TEST TERMINALS 80.36 480V DSL AUX BOARD 2B2-B, 480V RECPT(COOLING TWR BD & GENERAL ELECTRIC THED 136100WL 100 COMPT 3A2 AERCV PMP STATION) 80.38 480V C&A VENT BOARD 281-B, UNIT CONTROL ANNUNCIATION GENERAL ELECTRIC THED 136020WL 20 COMPT 6C SYSTEM 3 KV4 XFMR 80.40 480V ERCW MCC 2B-B, PEDESTAL CRANE ERCW WESTINGHOUSE KB 3200 200 COMDT 4A 80.42 120VAC YlTAL INSTRUMENT POWER NSSS AUX RELAY RACK B HEINEMANN CF2-Z51 1 15 BOARD 2-!!, C(R 25 80.65 480V REACTOR MOV BOARD 2R2-B, LOWER CONTAINMENT 2D COOLER GENERAL ELECTRIC THED 136015 15 COMPT SE SUPPLT ISOLATION VALW 2-FCV-67-89 80.66 480V REACTOR MOV BOARD 2A2-A, LOWER CONTA!WMENT 2D COOLER GENERAL rt ECTRIC THED 136015WL 15 COMPT 6A SUPPLY ISOLATION VALVE 2-FCV-67-105 80.67 480V REACTOR MOV BOARD 282-B, LOWER CONTA!NMENT 28 SUPPLY GENERAL ELECTRIC THED 136015WL 15 COMPT 9A ISOLATION VAlbE 2-FCV-67-90 80.68 480V REACTOR MOV BOARD 2A2-A, LOWER CONTAINMENT 2B COOLER CENER#1 ELECTRIC THED 136015 15 COMPT 68 SUPPLY ISOLATION VALVE 2-FCV-67-106 80.69 480V REACTOR MOV BOARD 2A2-2, CONTA!W4ENT ISOLATION VALVE CENERAL ELECTRIC THED 136015 15 COMPT 4E 2-FCV-70-141