ML19347F030
| ML19347F030 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 05/12/1981 |
| From: | Kintner L Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8105150120 | |
| Download: ML19347F030 (11) | |
Text
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UNITED STATES o',,
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NUCLEAR REGULATORY COMMISSION a
h WASHINGTON, D. C. 20555 NAY 121981 Docket No.:
50-341 APPLICANT:
Detroit Edison Company FACILITY:
Fe.rmi 2
SUBJECT:
SUfEARY OF APRIL 28,:.181 OL REVIEW MEETING REGARDING REASSESSMENT OF SEISMIC STRUCTURAL MARGIN The purpose of the meeting was to hear applicant's results for the reassessment of structures and components to withstand a Safe Shutdown Earthquake (SSE).
The following is a list of the enclosures: is a list of attendees, is an agenda, is a handout used in the meeting, and is an FSAR index for seismic qualification of equipment and structures.
The applicant is using a seismic response spectrum for the reassessment that meets the criteria outlined in our March 27, 1981 meeting.
The sequence of events for the plant cooldown is shown on Page 1 of Enclosure 3.
Systems and equipment required to achieve cold shutdown is listed on Pages 2, 3 and 4 of Enclosure 3.
Applicant said they plan to sample systematically the app. 3500 pipe hangers for evaluation. All hangers were designed to a 90% yield strength criteria for the design basis earthquake loads.
Therefore, the margin is designed to be the same for all, so that a few having the least margin cannot be selected. Applicant stated that load combinations varied for different components and structures.
(Enclosure 4, which references FSAR sections for various structures and components, was subsequently provided.)
The staff in Structural Engineering Branch requested that for critical elements of the structures, the stresses for loss-of-coolant accident loads should be provided as well as the stresses for the earthquake loads.
These LOCA stresses will be useful in the staff's judgment of the margin to accommodate the earthquake loads.
The st > ff in Equipment Qualification Branch requested that information needed to assess seismic qualification be included in the reassessment ~ submittal.
A 8105150
MAY l 21981 2-Detroit Edison Company
- The applicant plans to submit its results on May 12, 1981 and meet with the staff on May 19, 1981 to discuss them.
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L. L. Kintner, Project Manager Licensing Branch No.1 Division of Licensing
Enclosures:
As stated cc:
See next page 1
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Mr. Harry Tauber Vice President l
Engineering & Construction Detroit Edison Company 2000 Second Avenue Detroit, Michigan 48226 cc:
Eugene B. Thomas, Jr., Esq.
David E. Ilowell, Esq.
LeBoeuf, Lamb, Leiby & MacRae 21916 John R 1333 New Hampshire Avenue, N. W.
Hazel Park, Michigan 48030 Washington, D. C.
20036 Mr. Bruce Little Peter A. Marquardt, Esq.
U. S. Nuclear Regulatory Conmission Co-Counsel Reside,t Inspector's Office Thb Detroit Edison Company 6450 W. Dixie liighway 2000 Second Avenue Newport, Michigan 48166 Detroit, Michigan 48226 Dr. Wayne Jens Mr. William J. Fahrner Detroit Edison Company Project Manager - Fermi 2 2000 Second Avenue The Detroit Edison Company Detroit, Michigan 48226 2000 Second Avenue Detroit, Michigan 48226 Mr. Larry E. Schuerman Detrolt Edison. Company 3331 West Big Beaver Road Troy, Michigan 48084
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Detroit. Edison Company - NRC April 28, 1981 Detroit Edison Company-S&L, F. E. Gregor R. A. Witt-J. H. Casiglia M. Valathur W. M.-Street P. R. Olson M. Hassaballa GE
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NRC Staff
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L.~ Smith Cedric Child C. P. Tan P. T. Kuo D. Terao J. P. Knight J. Kimball Arnold Lee L. L. Kintner i
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i P00R ORIGINAL ENCLOSURE 2 E - EDISQt PE2TDGG Jerii as - loo #.k.
4 SEDMIC REINAIBlU'IQE Agenda
& b Barthquate Sequence of Lvents
& Wmatxhm ard Q:cIdown with ICE"A
& Idmtification of systems ard c w-.ts
& hepresentalive systens%t selecdon Piping syseens amgers/stwori.s apalpumb - Punes, iraives, wssels
& load Evaluablon on 190azles, h--:-Ei h 16 Piping Desi p Standard Mle Tray Hanger Evaluation 66 vessel and critiesi internals ausyression Pool m2.cericai and omtxol ran.i, hacks avnc Duetsng and s % ;
70wer Systerra (AC/DC) thderground Piping, Duchs 4 hathodsoEEvaluatibn F L. o:mparison t
Actumi asanalysis bryinDetenminallonMui Md=rm I
& Acomptance Criteria Discussion, Omservabism
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& k2-detion cd Results
& &cI==%21e of Sut aittals and Nbdting stretings e suc - Doesticre (MEB, EQB)
ENCLOSURE 3 i
SHUT-DOWN C0OL 00WN SEQUENCE OF EVENTS a).
SEE-Quake Causes Loss of Offsite Power.
b).
LOPA Initiates Isolation and Scram Via CRD.
c).
IIPCI & RCIC Start Automatically.
d).
IIPCI Trips on liigh Level or Manually by Operator.
c).
SRV's )by Open on Springs (Iligh Prensure).
f).
Operator Opens SRV's on M.S. Line B to Aid Depressurization.
g).
RPV is depressurized to 95 PSIC using SRV & RCIC in Torun Suction Mode.
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RilR SD Cooling Mode Initiates - RCIC Trips.
i).
RilR/SDC Cools RPV to <( 200r.
- Transient Ends -
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1 HAIN SYSTEMS LISTING 1).
RCIC 2).
Nucicar Boiler (M.S.L. B + 3 SRV) 3).
RllR - Div II (SDC) 4).
CRD AUXILIARY (SUPPORT) SYSTEMS LISTINC 1).
RilR SW - Div I 2).
Ciesel Cens - Div I 3),
Diesel Fuel Oil & Lube Oil - Div I 4).
EECW Div 1 5).
EESW Div I 6).
Control Air - Div I 7).
Control Center ilVAC - Air Side-DiV I 8).
Control Center HVAC - Water Side - DIV I 9).
Drywell Cooling 2 Speed Fans Only 10).
Small Piping - Report SL-3159 i
11).
Diesel Generator Ventitation - Div I 12).
Torus 13). DGSW - DIV I t6 <
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CEhERIC ESSENTIAL EQl'IP!fENT LISTING Equipnent Drywell Coolers Room Coolers.
1 Elect Tray Elect Conduit Hangers I & C Tubing MCC's Switehgear Relay Room & Control Room Racks Batteries & Chargers Diesel Generators Underground Elact Ducts
- Underground QAI Pipe (RilR Complex)'
MOV Operators 1
Pumps & Motors - Non CE Control Center Ceiling 6 Lights f
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. NSSS EQUIPMENT LISTING I.
RPV and Internals Key Vessel & Internal Components per FSAR Table 3.7-11 II.
Piping in Drywell Main Steam Lines A and B Snubbers MSIV's - Inside SRV's HPCI RCIC Recirculation - Suction and Discharge Valves Pump and Motor RHR Supply Line RHR Return Line Snubbers III.
Floor Mounted Equipment Hydraalic Control Units RHR Pumps and Motors RCIC Equipment l
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Representative Panels and Racks l
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ENCLOSURE 4 Response to Info. Request on Seismic Reevaluation Per Meeting 4/28/81 Qualification of Seismic Category I Equipment and Structures Component Qualification Procedure FSAR Reference Electrical & Instrumentation Envelope of NS & EW +
3.10.1.3.3.7 Y Simultaneously (by analysis)
Cable Trays SRSS of H & V Along Principal 3.10.2.2 AXIS Piping (Subsystems)
SRSS of NS-EW-V 3.7.3.6.7 Mechanical Equipment SRSS of NS-EW-V 3.7.3.16.2 G.E. Supplied IEEE 344-1971 3.10.1.2 Structure SRSS of NS-EW and V 3.7.2.1.2.2 1
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Buried Duct and Piping Forces Due to Wave Propagation 3.7.2.1.3.1 -
l in Rock and soil l
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MEEIING SUMfM5]lJ, DI,STR,ll10T,lDN MAY l 21981 Docket File G. Lear NRC PDR V. Noonan Local PD S. Pawlicki o g/ g(
TIC /NSI ra V. Benaroya N. Hugh c
Z. Rosztoczy s
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i LE/l Reading N(LL g
gg W. Haass p'gy131981>y H. Denton D. Muller E. Case I
7 R. Ballard D. Eisenhut M2 W. Regan I
R. Purple c> "5- @sYs D. Ross B. J. Youngblood P. Check f
A. Schwencer 4
g Chief, Power Systems Branch F. Miraglia co to
- 0. Parr J. Miller F. Rosa G. Lainas W. Butler j
R. Vollmer W. Kreger J. P. Knight R. Houston R. Bosnak Chief, Radiological Assessment Branch F. Schauer L. Rubenstein R. E. Jackson T. Speis Project Manager L. L. Kintner W. Johnston Attorney, OELD J. Stolz M. Rushbrook S. Hanauer 0IE (3)
W. Gammill ACRS (16)
T. Murley R. Tedesco F. Schroeder D. Skovholt M. Ernst NRC
Participants:
R. Baer C. Berlinger C. P. Tan, P. T. Kuo K. Kniel D. Terao, J. P. Knight, G. Knighton J. Kimball, Arnold Lee, A. Thadani L. L. Kintner D. Tondi J, Kramer D, Vassallo P. Collins D. Ziemann bcc: Applicant & Service List r