NUREG-0887, Responds to 860204 Ltr Re 860131 Earthquake Which Occurred in Vicinity of Facility.Nrc Evaluation of Event Will Be Published as Sser (NUREG-0887): Difference between revisions

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{{Adams
#REDIRECT [[NUREG-0887, Forwards Sser 9 (NUREG-0887) Re Operation of Plant.W/O Encl]]
| number = ML20137Y238
| issue date = 03/05/1986
| title = Responds to 860204 Ltr Re 860131 Earthquake Which Occurred in Vicinity of Facility.Nrc Evaluation of Event Will Be Published as Sser (NUREG-0887)
| author name = Denton H
| author affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR)
| addressee name = Loeb D
| addressee affiliation = AFFILIATION NOT ASSIGNED
| docket = 05000440, 05000441
| license number =
| contact person =
| case reference number = RTR-NUREG-0887, RTR-NUREG-887
| document report number = NUDOCS 8603120203
| package number = ML20137Y216
| document type = CORRESPONDENCE-LETTERS, NRC TO PUBLIC ENTITY/CITIZEN/ORGANIZATION/MEDIA, OUTGOING CORRESPONDENCE
| page count = 10
}}
 
=Text=
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                                                                                                                            \
                /                  %, .                        UNITED STATES
[                           g        NUCLEAR REGULATORY COMMISSION 7,                          j                  WASeitNGTON, D. C. 20655 9                                                                                                              l
                ** % .... *#g                                        MAR 0 51986 Mr. David Loeb 6318 Amelia Avenue Ashtabula, OH 44004
 
==Dear Mr. Loeb:==
 
This is in response to your letter dated February 4, 1986 to the Nuclear Regulatory Commission (NRC) concerning the January 31, 1986 earthquake which occurred in the vicinity of the Perry nuclear plant.
The information you provided with your letter is being considered by the NRC staff in its evaluation of the earthquake's impact on the Perry plant design. The NRC staff's evaluation of the event will be published as a supplement to the Perry Safety Evaluation Report (NUREG-0887).
In your letter you address two general issues, the earthquake which occurred in the vicinity of the Perry plant on January 31, 1986 and the issue of the geology of the Perry site.
As you may know, NRC regulations require nuclear plants to be designed and built to withstand earthquakes likely to occur in the area around the plant.
The NRC staff thoroughly reviewed the issue of site geology and published itsconclusionsintheConstructionPermitSafetyEvaluationReport(CPSER),
issued in July 1974, and Supplement 3 to the CPSER issued November 1975.
The Staff affirmed its conclusions in the Operating License SER (NUREG-0887)
                    -issued in May 1982 regarding the geology and seismology of the area, and determined the design of the Perry plant was sufficient to withstand earthquakes of the magnitude likely to occur near the plant.
As for the recent earthquake at Perry, the NRC staff has conducted a thorough investigation of the earthquake and its implications for the Perry plant. In addition, the NRC staff has been conducting extensive reviews of the seismic data recorded from instruments installed in the plant at the time the earthquake occurred. As a part of its investigation, the NRC staff has taken. appropriate actions to ensure that all data connected with the earth-quake is being preserved so as to permit a thorough and complete investigation.
Consistent with NRC Confirmatory Action Letters issued by the NRC regional staff beginning on the day of the earthquake, the Cleveland Electric Illuminating Company (CEI), has maintained, to the extent practical, all plant equipment, structures, and instrumentation in the "as-found" condition, pending evaluation for potential earthquake-related damage. A procedure is in place at Perry to assure that all potential earthquake related conditions are reported to the NRC staff and fully evaluated.
960312o203 e60131 ORREh                  E PDR
 
Mr. David Loeb                                2-On February 11, 1986, the NRC staff held a technical meeting at the Perry plant site to discuss with CEI and its consultants the results to date of CEI's review and evaluation of the earthquake and the plant response. On February 12, 1986, CEI submitted a written report of its findings, which the NRC staff is now carefully evaluating. The NRC staff's initial reports to the Commission's Advisory Conunittee on Reactor Safeguards were made on February 12 and 13, 1986.
To date, CEI's reviews and NRC inspection teams have found no significant physical damage to plant structures or equipment. According to CEI, a large number of plant systems were energized at the time of the earthquake, and those systems were not adversely impacted. CEI has also submitted to the NRC staff its_ analysis of earthquake-related data, and its analysis of the impact of the earthquake on the plant design, concluding that the earthquake:
: 1) did not exceed the design capacity of the Perry plant; 2) did not damage the Perry plant; and 3) provides no reason to change the design basis for the Perry plant.
The NRC staff and its consultants are carefully reviewing CEI's analysis and conclusions. Based on that review, and its own physical inspections and engineering analysis, the NRC Staff will determine whether the earthquake adversely affected the plant and whether, on the basis of the new data, it is able to reaffirm its prior favorable determination regarding the adequacy of the Perry plant design. The NRC staff expects to complete its technical assessment of the earthquake issue by March 1986.
The NRC Advisory Committee on Reactor Safeguards is expected to provide its assessment of the staff's technical findings and conclusions by mid-March 1986.
I trust that this letter has satisfactorily responded to your inquiry.
Sincerely.
Originalsipd tf H. R. Dentes Harold R. Denton, Director Office of Nuclear Reactor Regulation
*Previously concurred:                                                          >
0FC      : P D #4        : P D #4      :0 ELD        :0D:NRR        :D:NRR        :DIV:DD        :DIV:D
.......:__......____:__........__:............:.L._____.___:.___g...._:..__________:...........
'NAME :*JStefa no          :* W B utler  :*CWoodhead :DEisenhut
: H Demon      :* R H ou ston :* R B ernero
.......:............:_.......____:..._________: .....__....                  -j...__...:............:...........
DATE :2/19/86              :2/25/86      :2/20/86      :2/ /86N        : $/86        :2/26/86      :2/27/86
 
i                    c GREEN TICKET NO. 001416                                                                                                              +
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                      ' Local PDR
                      ~EDO #001416
                      .EDO Reading ,                                                                                                                        ,
          ....          HDenton/DEisenhut PD#4 Reading-DELD VStello DMossburg(ED0#001416)
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                      'JKeppler-JTaylor JSniezek JRoe.                                                                                                                                  .
TRehm-                                                                                                                                l i
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On February 11, 1986 . the NR C staff held a technical meeting at the Perry plant site to discuss with CEI and its consultants the results to date of CEI's review ~ and evaluation . of the earthquake and the plant response.                                                                          On
.            February 12, 1986, CEI submitted a written report of its findings, which the N RC staff is now carefully evaluating. - The N R C staff's initial reports to the Commission's Advisory Committee on Reactor Safeguards were made on
]'          February 12 and 13, .1986, r
l            To date, CEI's reviews and NRC inspection teams have found no significant                                                                                      -
physical damage to plant structures or equipment. According to CEI, a large                                                                                    i number of plant systems were energized at the tirts of the earthquake, and                                                                                      ,
those systems were not' adversely impacted.                    CEI has also submitted to the                                                                    ,
NRC staff its analysis of earthquake.related . data, and its analysis of the impact of the            earthquake    on      the  plant. desig n ,          conclu din g                                          that the earthquake:          1) did not exceed the design capacity of the Perry plant; 2) did not damage the Perry plant; and 3) provides no reason to change the design basis for the Perry plant.
The N R C staff and its consultants are carefully reviewing CEI's analysis and conclusions.        Based on that review, and its own physical inspections and                                                                                '
engineering analysis, the NRC Staff will determine whether the earthquake adversely affected the plant and whether, on the basis of the new data, it is able to reaffirm its prior favorable determination regarding the adequacy of the verry plant design.            The NRC staff expects to complete its technical                                                                              ,
assessment of the earthquake issue by March 1986 The NRC Advisory Committee on Reactor Safeguards is expected to provide its                                                                                    1 assessment of the staff's technical findings and conclusions by mid-March 1986.                                                                                I I trust that this letter has satisfactorily responded to your inquiry.
Sincerely, Harold R. Denton, Director Office of N uclear Reacter Regulation i
CPraviously concurred:
                                                                                  /(\')  "
DFC    :PDf4                            :0 ELD            :DD:NRR            :D:NRR                                          :DIV:DD                :DIV:D
:PD#4        i f
  .......:............:....._Q)...:.____....__:............:............:............:...........
NAME :*JStefano      :*W B utler      :*CWoodhead :DEisenhut                : H Denton                                      :* R H ou ston :* R B ernero
  .......:............:............:.......__ ..:..........._:............i............:...........
DATE :2/19/86        :2/25/86 g :2/20/86                  :2/ /86            :2/ /86                                          :2/26/86                :2/27/86
 
                                                                  \
On February 11, 1986, the NRC staff held a technical ' meeting at the Perry plant site to discuss with CEI and its consultants the results to date of CEl's review and evaluation of the earthquake and the plant response.                          On February 12, 1986, CEI submitted a written report of its findings, which the NRC staff is now carefully evaluating.            The NRC staff's initial reports to the Commission's Advisory          Committee on Reactor Safeguards were made on February 12 and 13,1986.
To date, CEl's reviews and NRC inspection teams have found no significant p'tysical damage to plant structures or equipment.            According to CEI, a large number of plant systems were energized at the time of the carthquake,                  and those systems were not adversely impacted.                CEI has also submitted to    the NRC staff its analysis of earthquake-related data, and its analysis of                the impact of the carthquake on the plant design , concluding that                          the carthquake:      1) did not exceed the design capacity of the Perry plant; 2) did not damage the Perry plant; and 3) provides no reason to change the design basin for the Perry plant.
The NRC staff and its consultants are carefully reviewing CEI's analysis and conclusions.      Based on that review, and its own physical inspections and engineering analysis, the NRC Staff will determine whether the carthquake adversely affected the plant and whether, on the basis of the now data, it is able to reaffirm its prior favorable determination regarding the adequacy of the Perry plant design.              The NRC staff expects to complete its technical assessment of the carthquake issue by March 1986.
The NRC Advisory Committee on Reactor Safeguards was briefed by the applicant and the NRC staff on February 12 and 13,1986 as stated above and is expected to provide its assessment of the staff's technical findings and conclusions prior to the decision to issue a low power operating license for Perry Unit 1.
I trust that t'ais letter has satisfactorily responded to your inquiry.
Sincerely, liarold R. Denton, Director Office of Nuclear Reactor Regulation
: c.            .  .                                                A*Lh    NY OFC    :PD4
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NAME :JSt      no    :WDutler          :CY db        ': DEisenhut :IIDenton      :RIlous on      : RDernero
_______.____________.___7    __
DATE :2/ /86          :2/gl$/86        :2/2lp/86      :2/ /86        :2/ /86      :2/g/86        :2/d /86
 
Document Name:
90/86 Requestor's ID:
ROSEANNS Author's Name:
Woodhead Document Comments:
letter to david loch
 
o                                    UNITED STATES g
3              o                NUCLEAR REGULATORY COMMISSION 3                p                                WASHINGTON, D. C,20555
                  \...../
Mr. David Loeb 6318 Amelia Avenue Ashtabula, OH 44004 2
 
==Dear Mr. Loeb:==
 
This is in response to your let er dated February 4, 1986 to the Nuclear Regulatory Commission (NRC) conc rning the January 31, 1986 earthquake which occurred in the vicinity of the rry { rplant7m09                                                            ,  .
The information you provided with your letter r ' he f =d:d                    i
_ the-NRC        y LosfM4AHQ s taff '-- "ae id        " *- initsevajuationoftheearthquake'simpatonthe Perry plant design. The NRC staff s evaluation of the event will be published as a supplement to the Perry Safety Evaluation Report (NUREG-0887).
In your letter you address two general issues, the earthquake which occurred in the vicinity of the Perry po k r plant on January 31, 1986 and the issue of the                                                                  e geology of .the 1-                                  bA~isdb /#o                                f        #'h#
v- Perry
                                              ,t-lw si,ter yh G fd              jaMohhufaYlwdh#RE d at                                                      uuk-b ir/
g \Tha  ^60 m Uh214nceaf
                                  + aksi.                  ,g/As-te the Mue_of-the-geology-in:the                                                                  f i      taff thoroug11y reviewed the issuelof site geology and published its                                                              ,g[fg j5 t
conc issuedusions      in the upplement in July,1974f,A    Con truction          Permit 3 to the. CPSER  Safety      issuedEvaluation November 1975.and-        Report (CPSER),7LGi$
again affirmed its MeAMe conclusions in the Operating License SER (NUREG 0887 i        ed in Ma ,,.1982 A                                dn                AM ,umug                                      f m      duft f OutG) Nss_ ilwnshtte dk<th/utadup 7tu <i 7h Nth ff' < aTfN@gt1&pg /Tff/pH/S As for the recent earthquake at errygthe y staf' S::
w + as ia it:        :::::;;rd. f-tg'yg g' y earthjugke      -_.
ontakenthefell=:i((MS[g#'
Parry:                                    .
j '[I      g
                                                          ~I                                                                                                .
( h e NRC                  staff has its implications      for the conducted Perry plant.                        a thorough investigation                                      NM' of conducting installed in the plant extensiveat the timereviews the earthquake              of the  seismic occurred. As a part                      data off recorded  I' fr its investigation, the NRC staff has taken appropriate actions to ensure t 94"P                    that all data connected with the earthquake is being preserved so as to permit a thorough and complete investigation.\ Consistent with NRC Confirmatory Action Letters issued by the NRC regional staff beginning
              !          on the day of the earthquake, the Cleveland Electric Illuminating Company (CEI), has maintained, to the extent practical,\all plant equipment, structures, and instrumentation in the "as-found," condition, pending evaluation for potential earthquake-related damage. A procedure is in place at Perry to assure that all potential earthquake related conditions are reported to the NRC staff and fully evaluateo.'
On February 11, 1986, the NRC staff held a technical meeting at the Perry plant site to discuss with CEI and its consultants the results to date of
((* g< ,CEI's
                .        February 12,review 1986, CEI submitted and aevaluation written report of its findings,  of the                            whichearthquak On a
  'j#            /      the_NRC staff is now carefully evaluating. The NRC staff's initial reports tothe9AdvisoryCommitteeonReactorSafeguardsweremadeonFebruary12
  >      .              and 13, 1986.
 
To date, CEI's reviews and NR inspection teams have found no significant physical damage to plant struc ures or equipment. According to CEI, a large number of plant systems were en rgized at the time of the earthquake, and those systems were not adversel impacted. CEI has also submitted to the NRC                          ''.
staff its analysis of earthquake-related data, and its analysis of the impactt/-
the earthquake on the plant design, concluding that the earthquake: 1) did /
not exceed the design capacity of the Perry plant; 2) did not damage the Perry plant. plant;kd.(
                /        )3},,providesnoreason'ochangethedesignbasisforthePerry u
The NRC staff and its consultants ard, carefully reviewing CEI's analysis and conclusions. Based on that review, and its own physical inspections and engineering analysis, the NRC staff will determine whether the earth-quake adversely affected the plant andiwhether; on the basis W new da W it is able to reaffinn its prior favorable determination r/Jarding the adequacy of the Perry plant design. The NRC staff expects to complete its technical assessment of the earthquake i,ssue by March 1986.
The NRC Advisory Committee on Reactor Safeguards was briefed by the applicant and the NRC staff on February 12 and 13,1986 as stated above r.d is expected to provide its assessment of the staff's technical findings and conclusions prior to the decision to issue a low power op'erating license for Perry Unit 1.
Itrustthatthisletterhassatisfactorilyrehpondedtoyourinquiry.
Sincerely, s
                                                          \
                                                            \
Harold R. Denton, Director Office of Nucelar Reactor Regulation
 
To date, CEI'.s reviews and NRC inspection teams have found no significant physical damage to plant str tures or equipment. According to CEI, a large number of plant systems were nergized at the time of the earthquake, and those systems were not advers y impacted. CEI has also submitted to the NRC staff its analysis of earthqua -related data, and .its analysis of the impact the earthquake on the plant de gn, concluding that the earthquake: 1) did not exceed the design capacity of the Perry plant; 2) did not damage the
          . Perry _ plant; 3) provides no reas,on to change the design basis for the Perry plant.
                                              \
The NRC staff and its consultants \are carefully reviewing CEI's analysis and conclusions. . Based on that review, and its own physical inspections and engineering analysis, the NRC staff will detennine whether. the earth-quake adversely affected the plant and whether on the basis the new data, it is able to reaffirm its prior favorable determination regarding the adequacy of the Perry plant design. \The NRC staff expects to complete its
          . technical assesscent of the earthquake issue by March 1986.
The NRC Advisory Committee on Reactor 1 Safeguards was briefed by the applicant
;          and the NRC staff on February 12 and 13, 1986 as stated above and is expected to provide its assessment of the staff's technical findings and conclusions prior to the decision to-issue a low p,ower operating license for Perry Unit 1.
I trust that this letter has satisfact rily responded to your inquiry.
                                                    , Sincerely, l Harold R. Denton, Director Office'of Nucelar Reactor Regulation
                                                        \.,
                                                          \
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UNITEJ STATES
_ ''/                #qi, j
            -!                              NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20065
                    ....../    .
FDO PRINCIPAL CORRESPONDENCF' CONTROL DUF: 03/04/86          EDO CONTROL: 001416 FROM:                                                                      DOC DT~ 02/04/86 FTNAl RFPLY:
DAVID LOFB ASHTABULA. OH
            .TO:
NRC.
                                                          **  GRFEN        **      SFCY NO:
FOR SIGNATURE OF:
DENTON ROUTTNG:
DESC                                                                  LTR ONLY:
GCHNNINGHAM COMMENTS RE EARTHQUAKE NEAR PERRY NUCLEAR Pl. ANT              KEPPLER TAYLOR
  ,          DATE: 02/11/86 ASSIGNED TO: NRR                  CONTACT: DFNTON SPECIAL INSTRUCTIONS'OR RFMARKS:
NRR RECEIVED: 02/12/86-ACTION:            DBL - BERNER0 NRR ROUTING:      DENTON/EISENHUT PPAS MOSSBURG/ TOMS L}}

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