NRC-94-0098, Forwards Nonproprietary Documents Re Turbine Generator Repairs & Restart from Fourth Refueling Outage

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Forwards Nonproprietary Documents Re Turbine Generator Repairs & Restart from Fourth Refueling Outage
ML20076J572
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 10/19/1994
From: Mckeon R
DETROIT EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20076J576 List:
References
CON-NRC-94-0098, CON-NRC-94-98 NUDOCS 9410260088
Download: ML20076J572 (26)
v • d • e


Text

_ _ _ _ _ _ _ _ _ _ _ _

Robert McKeon Assistant Vice Presdynt ard Manager, Operations Edison ==r"yNodh Dme Hw

"  % JP W *L October 19, 1994 NRC-94-0098 U. S. Nt. clear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555

Reference:

Fermi 2 NRC Docket No. 50-341 NRC License No. NPF-43

Subject:

Submittal of Documents Related to Fermi 2 Turbine Generator Repairs and Restart from the Fourth Refueling Outage The purpose of this letter is to submit non-proprietary documents related to Fermi 2 Turbine Generator repairs, actions taken as a result of the December 25, 1993 event, and restart from the fourth refueling outage.

Advanced copies of these documents have already been provided to the NRC staff for their review and some of them were also discussed in various meetings held recently between Detroit Edison and the NRC. A list of the attached documents are enclosed herewith.

If you have any questions regarding these documents, please contact Mr. Girija S. Shukla at (313) 586-4270.

Sincerely, f $V '

Enclosure Attachments cc: w/o attachments T. G. Colburn J. B. Martin M. P. Phillips T. Vegel s,

9410260088 DR 941039 ADOCK 05000341 PDR / u ly&], f A

Enclosure to NRC-94-0098 Page 1 LIST OF ATTACHED NON-PROPRIETARY DOCUMENTS RELATED TO FERMI 2 RESTART FROM THE FOURTH REFUELING OUTAGE

1. Draft RF04 Startup scheduled dated 7/16/94.
2. Startup Chemistry Controls, one page flow diagram.

3 RF04 Modification Status; Plant Engineering Report dated 7/21/94.

4. Core map showing fuel crud sample locations.

5 Hopper report analyzing data from seismic monitoring system; attached to R. Bryer memo to File T1-3680' dated 8/5/94.

6. Final Report Structural Walkdown with forwarding Alchalabi memo to McKeon dated 8/8/94.

7 One page sketch showing LP Stage 7 & 8 pressure plate installation.

8. Hopper and Associates Report on Post event seismic monitoring instrumentation evaluation; dated 2/4/94.

9 Engineering design documents and cales in response to questions from Jonn Ma in a conference call on 9/1/94; design calc DC-5882 on overhead crane damage evaluation and TSR-26565 describing repairs to Turbine Bearing Beam.

10. Executive Summary - Root Cause Report dated.8/27/94.
11. DECO NDE Summary Report, Rev. 1; L. G. Fron & P. K. Hudson memo to L. C. Fron dated 10/11/94, (TMTB-94-0025).
12. Memo from K. Howard to R. Newkirk; dated 9/26/94 responding to NRC questions on tank pedestal and turbine overhead crane inspections.

13 Turbine generated Missile Analysis Report dated 9/30/94 (DC-5144).

14. Memo from K. Howard to R. Newkirk, dated 10/17/94 on Turbine Overhead Crane (TMPE-94-0588).

15 Turbine Missle Accident Safety Evaluation, SE-94-0073, Rev. 1; dated 10/6/94.

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PLANT ENGINEERING RF04 MODIFICATION STATUS

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!9 STATUS AS OF: July 21,1994

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.* APPROVED EDPS FOR RF04 R MOD A TARGET F-CAST COMMENT / REFERENCE SCHED. p DATE DOC DOCe E DESCRIPTION OWNER / ISSUE ISSUE IMPLEM. OUT ISSUED

. TYPE __ _ _

V . . _ . , _ _ _ _ _ _ _ _ _ __ _ . .. . _ _ _ _ . _ _ _ . E_ DATE _ DATE , _ __.__ ___ , _ _ . _ DATE _ LST BY P.E.

__ RF04 DESIGN _ CHANGES _- TO B_E ISSUED _ _._ _ __ _ _ _

EDP 11738 CONTROL ROOM BREATHING AIR MOD BLACHA 24-May-94 28-Jul-94 284ul-94 X

_ EDP _ 11881___ REPLACE C11,C32 N20,8N21 BARTON_TR_ANSMITTERS HOSCILA S&L 06-Jul-94 02- Aug-94_ INCLUDES TSR 26322 21-Jul-94_ _X _ _ _ _

EDP 13548 REPLACE HYDROGEN MONITOR-OFF GAS PELUSO CDA 274uF94 24-A_ug-94 15-Aug-94 X &

EDP 13813 REROUTE RWCU VALVE ACCUMULATOR DRAIN LINES NG 31-Aug-94 TBS X

._EDP_ 13958 OFFGAS PREHEATER VENT VALVE . N_ICK S&L. 25-Aug-94 16_-Aug-94 _ .

_01-Aug-94 X EDP_ _14080_ OBSOLETE SDV SOLENOlD VALVE _REPLACEMEN_T _ . MAREK _

S&L 284ul-94 _ _ _ _ . _ _ _ . _ _ _ _ . . _ _ _ _ _ _ .

18-Jup94 X EDP 14098 OFF GAS RAPID RECOMBINATION MODIFICATION NICK S&L 25-Aug-94 O s -Aug-9_4_ X. _ _ .

EDP 26043 REMOVE HIGH RAD ALARMS IN CCHVAC WOLFF 07-Sep-94 TBS X EDP 26116 REPLACE SWGR ROOM CONDENSING UNITS JAX S&L 07-Jun-94 02-Aug-94 _

08-Aug-9,4 X, __ _

EDP 26117 REPLACE OSC A/C UNITS DEFIBAUCH S&L 27-Jun-94 02-Aug-94 06-Aug-94 X EDP 26182 RWM SINGLE ROD SCRAM TIME MAREK 18-May-94 294ui-94_ DCAT PRIOR T_O_ REL_OAD__ ._20-Jul-94 X ,

EDP _ 26310 A_ ADD MOV G33F220 PATEL S&L .._ 294ul-94 .

PART 1 ISSUED [c/MA 17-Jun-94 _ X_ . _064ul-94 ADANDON EXTER T50 HEAT TRA_CING . KHAN S&L _27-Jul-94, 01-A_ug-94 X EDP _26312 _ ___

EDP 26321 REPLACE MAIN TURB VIBRATION INSTRUMENTATION PELUSO S&L 03-Aug-94 25-Jul 94 X EDP 26324 MOD RB BASEMENT SW QUAD EQUIP HATCH COVER NG 15-Aug-94 30-Aug-94 X. . . _ _ _ _ _

EDP__ 26332 OFFGAS CHILLER CONTROL PANEL MOD __DEFIBAUGH S&L 014ul-94 294ul-94 0_8-Aug-94 X

_EDP 26356 INDEPT LEVEL CONTROL FOR MAIN CONDENSER BAN _EK S&L 08-Jun-94__264ub_94_ . _ 25-Jul-94 __X_ ___

EDP 26367 STATIC EXCITER KONJA S&L 01-Jul-94 02-Aug-94 224ul-94 X EDP 26408 REPLACE GEMAC CONTROLLER FOR N62F406A&B PELUSO TBS SCOPE DELETE IN PROCESS 02-Aug-94 X EDP 26409 REPLACE GEMAC CONTROLLER FOR N62F401 A&B SAOUETON S&L 10-Aug-94 17-Aug-94 X _ _

EDP 26436 PCRMS COND REMOVAL MOD KHAN S&L 274ul-94 .

01-Aug-94 X EDP 26524 REDESIGN N&S RFPT DRAIN PIPING BURR S&L 05-Aug-94 254ul-94 X EDP 26660 BOTTOM HEAD DRAIN THERMOCOUPLE MOD BREGNI 29-Jul 94 TBS X EDP 26664 INSTALL TAPS FOR FUTURE HYDROGEN INJEOTION WILGER S&L 08-Aug-94 TBS X

@ EDP 26668 SLC TEST LOOP MOD IFICATION TEMPLE TBS TBS _ X  ;

25 SUB TOTAL l

P2 PLANNING & SCHEDULING (RIO4EDP.WK3) PAGE1 214ul-94 i

APPROVED EDPS FOR RF04 R MOD A TARGET F-CAST COMMENT / REFERENCE SCHED. DN DATE DOC DOC # E DESCRIPTION OWNER / ISSUE ISSUE IMPLEM. DUT ISSUED TYPE V _E__ DATE_DATE DATE LST BY P.E. ,

RF04 DESIGN CHANGES -TO BE ISSUED NOT ON OUTAGE LIST EDP 12767 GENERATOR RELAY MOD PIFER CDA 09-Aug_-94 TBS EDP 26580 SEPARATE HTR 1 & 2 LEVEL CONTROLS BANEK S&L 24-Aug-94,._

TBS ABN 2S$83 ADD QUICKTEST CABLES TO MOV FOR MOV TESTING FRANCIS 21 Jul-94 254ul-94 SPEC REVISION TBS EDP 26678 REPLACE REACTOR VESSEL FLANG TEMP RCDR KLEMPTNER 30-Aug_94 TBS EDP 26726 TURBINE 788 STAGE PRESSURE PLATES T_ASSELL _02-Aug-94 TBS EDP 26749 HWC INSTRUMENTATION MOOlFICATION AMIN TBS ADDED 204UL TBS EDP 26753 PROVIDEINTERLOCKS FOR HFP AND HWC EQUIP AMIN TBS ADDED 204UL TBS 7 SUB TOTAL 32 TOTAL PE PLANNING & SCHEDULING (RF04EDP.WK3) h PAGE 2 M 21-Jul-94

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',- PROVED EDPS FOR RF04 R MOD A TARGET F-CAST COIMIENTAREFERENCE SCHED. DN DATE DOC DOC # E DESCRIPTION OWNER / ISSLT ISSUE IMPLEM. DUT ISSUED TYPE V E DATE DATE DATE LST SY P.E. I RF04 DESIGN CHANGES COMPLETED I EDP 5173 ADD ATWS TRIP TO RECIRC PUMP DRIVE MOTORS KLEMPTNER 08-Sep-93 EOC 93 0009 X 15-Sep-93 -

_EDP 9207 INSTALL FEED FLOW / STEAM FLOW MISMATCH LIMITEI PELUSO 07-Apr-93 X 31-Mar-93 EDP 9569 CONDENSER WATERBOX PLATFORM ABDALLAH 07-Apr-93 X 174an-93 EDP 10201 REAC PRESS CONTRL SYS PRESS REG ISOLATION WOODEN GE 17 Jun-94 27-Jun-94 12-Jul-94 X 30-Jun-94 EDP 10257 SPLITAJPGRADE GLAND STEAM LOCAL CONTROLLER PELUSO 02-Jul-93 X 014ul-93 EDP 10810 FPCCU SKIMMER SURGE TANK LS REPLACEMENT BREGN1 30-Mar-94 X 30-Mar-94 EDP 11002 8 5 N.&S. FEEDWATER HEATERS - lNDEP CONTROLS BANEK 21-Feb-94 X 10-Mar-94 EDP 11062 TRIP CUT OFF SWITHCES FOR 848-87 & 85E-E7 ACHARYA 05-May-93 X 07-Apr-93 EDP 11222 NOSE CONE MOD DROTAR N/A X 30-May-9_0 EDP 11240 REPLACE CONTROLLER FOR C11F412 MAREK 20-May-94 26-May-94 X 11-May-9_4 EDP 11324 5 8 N&S FEEDWATER HEATER - INDEP CONTROLS BANEK 18-AugE_ X 31-Aug-91

_EDP 11492 B31/T49 VLV POS IND MOD TO RG 1.97 REQUIREMENT: KHAN 11-Aug-93 EOC 93-0004 X 31-Aug-E ,

EDP 11493 UPGRD B21R610 IND LOOP TO RG 1.97 REQUIREMENT.HAUPT 284ul-93 EOC 93-0005 X 28-Jul-93 EDP 11498 INCR FREQ RESP OF N22F415 A,8 #5 FW HTRS MAREK 08-Feb-91 X 08-Feb-91 EDP 11583 CHANGE SETPOINTS FOR VALVE E1100F056A/B WILLIAMS 184un-91 X 18,Jun-91 EDP 11629 RECORDER REPLACEMENT RICHARDS N/A X 23-Apr-93 EDP 11655 HPCI TEST RETURN VALVE MOD - E41-F011 DROTAR 15-Feb-94 EOC 94-0001 X 14-Mar-94  ;

EDP 12002 ADD DRAINS TO 3N,4N,86N EXTRACTION STEAM LINE! TEMPLE 08-Apr-94 X 14-Apr-94 EDP 12447 A ADO VALVES AND REPLACE STEAM EXHAUSTERS DEFIBAUGH 29-Mar-94 EOC 93-0008 X 27-Apr-94 EDP 12689 DELETE AUTO CONTROL CKT FROM FAN COIL UNITS SAQUETON 10-Aug-93 X 18-Aug-93 EDP 12727 PROTECTIVE COVERS FOR PUSHBUTTONS BANEK 274ul-94 18-Jul-94 X 084ul-94 EDP 12836 A C11 RELIEF VALVE MOD GRIMES 30-Sep-93 X 01-Oct-93 EDP 12889 E1150F007B CONTINGENCY VALVE REPLACEMENT BLACHA N/A X 16-Sep-92 EDP 12941 72CF AUTO THROW OVER SCHEME ACH AYA 05-May-93 X 08-Apr-93 f/) EDP 13064 ACCESS PLATFORM TO HVAC ABDALLAH 28-May-93 X 10-Apr-93 EDP 13066 HOP ROOM ACCESSIBILITY PLATFORMS SAHINER 02-Mar-93 X 02-Mar-93 EDP 13070 RECtRC MG SET INSPECTION PLATFORM HSU 25-Feb-93 X 02-Mar-93 EDP 13092 REPL CABLES 2013108-1P AND 201311B-1C- EQ AGING FRANCIS 11-Aug-93 X 31-Aug-R EDP 13268 EECW PUMP CASING VENT VALVES ASME CODE DEV. GOLDSBY 27-Apr-93 DER 92-0252 X 13-Apr-93 EDP 13201 REMOVE COVER ON T50 PANEL KHAN 27-Apr-94 X 27-Apr-94 PE PUU#elNG & SCHEDUUNG (RF04EDP.WK3) PAGE 3 214ul-94 i

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PROVED EDPS FOR RF04 R MOD A TARGET F-CAST COMMENT / REFERENCE SCHED. DN DATE DOC DOC 8 E DESCRIPTION OWNER / ISSUE ISSUE IMPLEM. DUT ISSUED TYPE V E_ _DATE DATE DATE LST_BY P.E.

EDP 13298 RWCU HOLDING PUMP DISCHARGE VALVE REPLACE. WILGER 17-Mey-94 _

154un-94 X 19-My-94 EDP 13368 SDV DRAIN UNE _ME_UTO 09-Dec-92 X 24-Feb-93 EDP 13393 REMOVE FLANGE IN RHR TEST LINE WILLIAMS 214un-94 27-Jun-94 X 23-Jun-94 EDP 13576 CONTROL LOGIC CHANGE FOR E21F015A&B FE_RGUS_ON 26-May_94 X 25-May-94 EDP 13605 RWCU ROOM JIB CRANES BURG .

19-Apr-94 X 19-Apr-94 EDP 13623 CHANGE LOGIC TO OPEN/CLOSE - E4150F008 BYRD 03-Nov-93 X 17-Nov-93,

_EDP 13653 FEED HEATERS (3,4,5) FANS ACCESS PLATFORM BRYER 304ul-93 X 284ul-93 EDP 13658 TORUS VALVE (E4150 F021/22) ACCESS PLATFORMS _B.URG 31-Aug-93 X 31-Aug-93 EDP 13667 COMPLETE DW SNUBBER REMOVAL PHASE 2 _WILLIAMS 07-Sep-93 EOC 934010 X 10-Sep-93 EDP 13672 ISOLATE AIR FOR (12-14} SRV ACCUM CHECK VALVES TASSELL 07-Sep-93 EOC 93-0002 X 08-Sep-93 EDP 13677 REPLACEMENT OF TESTABLE CHECK VLV_POS SWS FERG.US_ON 07-Sep-93 X 08_Sep-93 EDP 13679 REPLACEMENT OF POS IND PROB CONNECTORS RICHARDS . 19_4an-94 X 284an-94 EDP 13687 EECW DRYWELL MANUALISOLATION VALVE _MUDAR 07-Sep-93 X 08-Sep-93 EDP 13714 REROUTE DRYER SEPERATOR PIT DRAIN UNE GRIMES N/A X 27-Dec-93 EDP 13724 REHEATER STEAM PRESSURE CONTROL VALVES MUDAR 25-May-93 X 074un-93 EDP 13727 REMV DAMPER T4100F208 STM TUNL I CHG ACTUATOEJAX 06-Apr-93 DER 92-0633 X 08-Apr-93 EDP 13734 COLD REHEAT HANGER WI_LLAMS 10Dec-93 X 284an-94 EDP 13751 RX WATER LEVEL INSTRUa1ENTATION KLE_MPTNER 08-Sep-93 EOC 93-0011 X 23-Sep-93 EDP 13764 BELLOWS REDESIGN FOR NO 3 EXT. STEAM LINE WILLAMS 034an-94 X 13-Jan-94

_EDP 13787 RELOCATE G33F001 TS HYPASS US CONTACT BREGNI 01-Sep-93 X 31-Aug-93_

EDP 13795 REMOVE UNDER VESSEL ROOM INTERFERENCES BLACHA 01-Mar-94 X 03-Mar-94 EDP 13818 TURBINE CONTROL VALVE MODIFICATION TASSELL 05-Apr-94 X 06-Apr-94

_EDP 13850 CHANGE FUSE TYPE IN CKT 31 KONJA 23-Mar-93 X 17-Mar-93 EDP 13921 ADHRS - RHR CROSS TIE MODIFICATION MELITO 02-Nov-93 X 16-Mar-94 EDP 13922 ADHRS - BRANCH CONN TO RHR PUMPS MEUTO 06-Oct-93 X 16-Mar-94

@ EDP 13924 RHR CROSS-TIE PIPING MEUTO S&L 30-Jun-94 174un-94 244un-94 X 17-Jun-94 EDP 13972 ADHRS - ELECTRICAL MODS KONJA 01-Feb-94 X 02-Feb-94 EDP 13977 EXTEND HPCIINJECTION VENT UNE SAHINER 15-Mar-94 X 23-Mar-94 EDP 13978 REMOVE INSULATION FROM HPCI INJE_CTION LINE JAX 14-Mar-94 X 16-Apr-94 ECP 13993 RHR CR 2820 TIME DELAY RELAY REPLACEMENT KHAN 22-Dec-93 X 28-Dec-93 EDP 13996 EDG START AIR PRESSURE CONTROL SCHEME ANDERSON 15-Dec-93 X 08-Feb-94 PE PLANNING & SCHEDUUNG (RF04EDP.WK3) PAGE4 014ul-94

e APPROVED EDPS FOR RF04 R MOD A TARGET F-CAST COMMENT / REFERENCE SCHED. DN DATE DOC DOCS E DESCRIPTION OWNER / ISSUE ISSUE IMPLEM. DUT ISSUED TYPE V . _E_ DATE DATE DATE LST BY P.E.

EDP 14015 INSTALL _ PLATFORM UNDER HP TURB_INE SAlilNER _30_-Mar-94 X 2_6-Apr-94 EDP 14022 CHANGE FUSE TYPE K_OtLIA _03-Aug-93_ X 284ul-93 EDP 14039 FEED WATER HEATER PRESSURE REUEF VALVE WILGER _04_-Ma_r-94_ X 07-Mar-94_

_EDP 14087 MS SNUBBER REPLACEMENT _H_SU 04-Mar-94 X 264 arf 94 EDP 14099 REMOVAL OF REMA!NING THERMO-LAG _ BARRIERS KlL_ROY 12-Apr-94 X 19-Apr-94 EDP 14125 ADD RHR & CS FLOW METER FOR SURVEILLAN_CES SHARMA 194 arf 94 X 13-Apr-94 EDP 26000 DIV 2 EECW MAKE UP TANK LEVEL REFERENCE LEG AMIN S&L 224urF94 274urF94 X 224urF94 TSR 26013 s 2/3 RECIRC UMITER SPC FOR STAB _luTY KLE_MPTNER 17-Feb-94 X 14-Apr-94 EDP 26025 HPCIINPUT SUCTION TRANSFER TO TORUS _HAUPT 02-Feb_-94 X 21-Feb-94 EDP 26039 RHR PUMP SWITCH SEAL-4N SHARMA 23-Fel>94 26-Apr-94 X 20-May-94 TSR 26049 B HDP SEAL & BASEPLATE MODIFICATION NG 24-May-94 304urF94 X 25-May-94]

_EDP 26171 SNUBBER REDUCTION -RPV DRYWELL BURR 24-May-94 084urF94 X 25-May-94 EDP 26256 OSSF HVAC FIRE DETECTION MOD McDONOUGH S&L 31-May-94 20-May-94 014ul-94 X 024urF94 EDP 26257 REMOVE SAND FROM SAND CUSHION DRAIN UNE BUCK 10-Mar-94 X 16-Mar-94 EDP 26265 RB HVAC FIRE DETECTION MOD McDONOUGH S&L 144un-94 084ul-94 204ul-94 X 084ul-94 j EDP 26271 MODIFY PENETRATION IN OUTAGE BUILDING BUCK 12-Apr-94 X 14-Apr-94 EDP 26276 RBHVAC INLET DAMPER ACTUATOR REPLACEMENT DEFIBAUGH 284un-94 134ul-94 X 294urF94 EDP 26310 ADD MOV G33F220 PATEL S&L 294ul-94 PART 1 ISSUED 174urF94 X 064uk94 EDP 26315 REPLACE G11 FLOW INDICATOR XMITTER AMIN 06-Apr-94 X 06-Apr-94 EDP 26322 CCHVAC TEMP SWITCH REPLACEMENT SAOUETON 23-Mar-94 X 23-Mar-94 EDP 26328 GUARD RAll FOR RACKS H2100P004 & 5 BURG 13-May-94 X 13-May-94 EDP 26331 RINGWATER PUMP MECHANICAL SEAL AND FILL UNE BLACHA S&L 014ul-94 264ul-94 INCLUDES TSR 26325 284ul-94 X 134ul-94 EDP 26352 REPLACE LPRM CABLES AND CONNECTORS WOLFE S&L 25__-May-94 074un-94 104urF94 X 094un-94 EDP 26362 RELOCATE CHECK "'LVE N2100F078 WILGER S&_L 224urF94 084ul-94 X 234un-94 TSR 26365 CONDENSER WB PLA( ORM & HANDRAll ABDALLAH S&L 17-May-94 X 19-May-94

@ EDP 26375 E11F015A PRESSURE LOCK MOD BLACHA S&L 014un-94 24-May-94 044un-94 X 27-May-94_

EDP 26376 E21F005A PRESSURE LOCK MOD BLACHA S&L .._014urF94 064un-94 X 27-May-94 TSR 26395 REHEATER SEAL TANK LEVEL TRANS SUPPORT MOD NG 27-May-94 164un-94 X 26-May-94 TSR 26396 FLASH TANK MANWAY COVER MOD TEMPLE 014ul-94 204ul-94 17-Aug-94 X 204ul-94 TSR 26397 HOP SUCTION PIPE LOW POINT DRAIN WILUAMS S&L_ 114ul-94 194ub94 254ul-94 X 154ul-94 EDP 26398 CONDENSATE HIGH POINT VENT REROUTE TO FLOOR WILLIAMS S&L 114ul-94 254ul-94 X 144ul-94 PE PLANNING & SCHEDUUNG (RF04EDP.WK3) PAGE5 214ul-94 4

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\ APPROVED EDFS FOR RF04 R MOD A TARGET F-CAST COMMENT / REFERENCE SCHED. ON DATE DOC DOC 8 E DESCRIPTION OWNER / ISSUE ISSUE IMPLEM. DUT ISSUED TYPE V E DATE DATE DATE LST BY P.E _.

EDP 26405 MANUAL BYPASS GSW TCVS FOR TBCCW & RBCCW MUDAR TBS X 21-Mar-94 TSR 26400 TURBINE BUILDING LADDERS / PLATFORMS ABDALLAH 27-May-94 13 Jun-94 X 24-May-94 EDP 26435 DW COOLER FLANGE MOD JAX 03-May-94 10-May-94 X 11-May-94 TSR 26442 TB HVAC SET POINT CHANGE SAOUETON 15-Apr-94 X 15-Apr-94

_EDP 26452 REVISE SCHEME FOR CONDENSATE MIN FLOW VALVE SAOUETON 294un-94 014ub94 164ul-94 X 014ul-94 TSR 26484 BECKMAN CONDUCTIVITY CELL REPLACEMENT AMIN 15-Jun-94 254ul-94 X 154urF94

_ED_P 26510 ADD ISOLATION VALVES FOR RB SUMP PUMP BURR 05-Jul-94 154u'94 19-Jul-94 X 184ul-94 EDP 26515 PERMANENT REMOVAL OF SEISMIC RESTRAINTS WILLIAMS 24-May-94 01-Jun-94 X 24-May-94 EDP 26520 REMOVE CHECK VALVE E41FD46 DROTAR 144un-94 TBS X 154urw94 EDP 26523 RFP SEAL WATER SYSTEM MODIFICATION PELUSO 084ul-94 284ul-94 X 134ul-94 TSR 26565 TURBINE BEARING BEAM REPAIRS SAHINER 064un-94 13-Jun-94 TBS X 144un-94 TSR 26567 CONDENSER STRUCTURAL REPAIRS SAHINER 204un-94 064un-94 X 204un-94 TSR 26566 TUBINE (LP3) STRUCTURAL REPAIRS SAHINER 134un-94 31-May-94 X 144un-94 TSR 26577 TBHVAC EXHAUST FAN MISSLE PROTECTION ABDALLAH S&L 02-Jun-94 X 02-Jun-94 EDP 26593 RBHVAC DUCT ACCESS MODIFICATION JAX S&L 224un-93 22-Jun-94 EDP 26605 REMOVAL OF SNUBBER T23-2837-53-G34 WILLIAMS 194ul-94 264ul-94 X 20-Juk94 TSR 26610 INSTALLATION OF NEW 480V DIST. CABINET ON TB3 PlFER 20-Jun-94 054ul-94 26-Jul-94 X 054ul-94 EDP 26614 RPL 18 EXP JNTS ON HEATER 1&2 EXTRACTION PIPlNCWILLIAMS 114ul-94 184ul-94 X 084ul-94 TSR 26640 MOD SEAT RING ON HFP MIN FLOW BYPASS VLV DROTAR 134un-94 ADDED 6/21/94 X 13-Jun-94 EDP 26662 EDG AIR RECEIVER DRN VALVE REPLACEMENT ANDERSON 284un-94 28-Jun-94 294un-94 EDP 26710 REPLACE TWMS VALVE G5100F607 WILGER 224un-94 ADDED 6/22/94 224un-94 EDP 26718 NEW SOFTSEAT FOR C41005006 GRIMES 08-Jul-94 ADDED JULY 8 TBS X 08-Jul-94 114 TOTAL RF04 COMPLETE 111 x

i j PE PLANNING & SCHEDUUNG (RF04EDP.WK3) PAGE 6 214ul-94

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O L.

l NUCLEAR GENERATION MEMORANDUM Date: August 5, 1994 File 0801.21 TMPE-94-0465 l l

To: File -

From: R.A.Bryerg Ref.: Edison File T1-3680

Subject:

Fermi 2 Turbine Failure - Post Event Earthquake l Instrumentation Data Evaluation l Hopper and Associates letter HA-02/94-775 dated February 4, 1994,

submitted a report titled " Fermi 2 Turbine Failure Post Event Earthquake Instrumentation Data Evaluation ." This report was based on data from the passive sensors and digitized time history record taken from the active sensors magnetic tape. l l

Subsequent waterfall plots of the recorded signals from the active sensor data by Detroit Edison Technical and Engineering Services personnel has determined that the spikes on the active data records are recorder startup spikes and are not ground motion.

The active recorders were designed to record ground acceleration initiated by an earthquake exceeding .01g acceleration. The recorder has 0.01 second lag time from initial shock to data recording. The instrument, therefore, will not record the initial shock impulse but will record subsequent accelerations for the duration of the earthquake.

Hopper and Associates was, therefore, asked to prepare a report based on passive sensor data only. The passive instruments are peak shock recorders that measure any displacement the recorder is i i subjected to. This new report transmitted via Hopper and l Associates letter HA-08/94-0841 dated August 5, 1994, supersedes the report received February 4, 1994 (Edison File T1-3680). The ,

conclusions in the report have not changed. '

Noted by:  %/2 K. E. Howard, Supervisor, Hech/ Civil RAB/psl cc: with reports A. M. Alchalabi A. J. Banek J. E. Conen L. S. Loveland D. P. Hesaros R. A. Newkirk J. G. Walker ETS PE File LER 93-14 File

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HOPPER AND ASSSCIATES ENGINEERS 300 Vista Del Mar Redondo Beacn, CA 90277 G10) 373 5573 fax
G10) 7917308 j 1

August 5,1994 HA-08/94-0841 i i i

Detroit Edison Company Enrico Fermi 2 Job Site

. 6400 North Dixie Highway Newport, MI 48166 Attention: Mr. Bob Bryer, Senior Engineer Subject- Fermi 2 Turbine Failure Post Event Earthquake Passive Instrumentation Data Evaluation

Reference:

Letter from K.E. Howard to David Hopper TMPE-94-0389 File 0801.21, Fermi 2 Turbine Failure - Post Event Earthquake instrumentation Data Evaluation; June 27,1994 Gentlemen:

As you requested, we have comp!eted the subject and enclose a report elucidating our work. The turbine failure at Fermi 2 on December 25,1993 should not be compared with a tectonic earthquake, and globally, the Reactor / Auxillary building did not experience OBE excitation levels. Please allow this letter to summarlZe our findings and observations.

1 The seismic event alarm in the Fermi 2 Reactor / Auxiliary Building adjacent to the Turbine Generator Building was activated during the December 25,1993, Turbine Failure

! Event by an excitation having an acceleration amplitude exceeding the 0.019 Instrumentation trigger activation level. This event was also recorded on the sub-basement passive triaxial earthquake recording devices but not on the other passive triaxial earthquake ,

recording devices mounted in the Reactor / Auxiliary Building at various locations between the I sub basement and the fifth ficor. These devices show that surface tremors passed through I the Reactor / Auxillary Building foundation without globally exciting the structure as a tectonic i earthquake event would have.

Although the data indicate that the Reactor / Auxiliary Building did not experience any significant dynamic excitation, the impulsive waves passing through the foundation occasioned localized safe shutdown earthquake exceedence indications in the foundation instrumentation as would be anticipated. For this reason, the post event earthquake instrumentation data was evaluated in accordance with those provisions established as though there had been an earthquake, 1

i

bk HCPPER AND ASSOCIATES ENGINEERS The enclosed report describes data reduction, analysis, and interpretation f rom the passive earthquake instrumentation. Also, the satisfactory performance of all Reactor / Auxiliary Building systems and components during and after the event and acceptable inspection of the structures after the event are documented. ,

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i If questions arise, please contact the undersigned.  !

Very truly yours,

$W W Philip N. Hasrouni Professional Engineer Enclosure l

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