ML20199L524
ML20199L524 | |
Person / Time | |
---|---|
Site: | Perry |
Issue date: | 06/30/1986 |
From: | Stefano J Office of Nuclear Reactor Regulation |
To: | Office of Nuclear Reactor Regulation |
References | |
NUDOCS 8607090465 | |
Download: ML20199L524 (88) | |
Text
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p . ,jo g UNITED STATES 8 e NUCLEAR REGULATORY COMMISSION
$ $ W ASHINGTON, D. C. 20555 o
- s...../ JUN 3 01986 Docket Nos. 50-440/441 APPLICANT: Cleveland Electric Illuminating Company FACILITY: Perry Nuclear Power Plant
SUBJECT:
REPORT OF MEETING WITH THE CLEVELAND ELECTRIC ILLUMINATING COMPANY (CEI) ON PERRY EARTHQUAKE CONFIRMATORY WORK PROGRESS I On June 11, 1986, the NRC Staff met with CEI and its consultants to discuss and review progress toward the completion of the Perry Earthquake confirmatory items discussed in SER Supplement 9 for the full power licensing of Perry 1. A copy of the slide material presented by CEI and its consultants during the meeting is contained in Enclosure (1). Enclosure (2) lists the meeting participants. The meeting was noticed in the PDR on June 2,1986 and members of the public invited to attend. A representative from the U.S. Geological Survey (USGS), Mr. R. Wesson, participated in the meeting and provided limited copies of the USGS report on the Perry Earthquake. The USGS plans to release the report as Open-File Report 86-336 on/or about June 20, 1986. Consequently, a copy of the USGS report is not enclosed with this meeting report. The information presented by CEI and its consultants, Weston Geophysical, Gilbert Associates, and Dr. P. Taiwani from the University of South Carolina, updated the NRC Staff on progress made in the completion of the seismological / geological confirmatory work since the last progress meeting held on April 30, 1986. (A report of the April 30th meeting was placed in the PDR and provided to addressees on the Perry Service List by NRC Memorandum dated. May 12, 1986). Specifically discussed was confirmatory work related to: equipment seismic qualifications and seismic margin studies; studies of the earthquakes in the tectonic region in which the Perry plant is located; the the results of gravity and aerial magnetic surveys and geologic mapping in the vicinity of the plant site; and a study of the possibility that the January 31, 1986 earthquake and its aftershocks was induced by Calhio agricultural liquid waste injection wells located between the plant and the 1986 earthquake epicenters. Weston Geophysical (G. Leblanc) summarized seismic activity near the January 31st earthquake location. The thirteen aftershocks recorded were found to occur in a cluster around the earthquake epicenter with a diameter of about 1.5 km, ranging in depth from 3 to 6 km. Re-evaluations of two 1983 earthquakes in Ohio, events which had magnitudes of 2.5 to 3, located these events 3 to 4 km east-northeast of the Calhio injection wells. Weston concluded from these findings that it is uviear if the 1983 events are associated with the wells; however, Weston considers those events as probably being random tectonic events as opposed to being well-induced. A magnitude -0.4 event, which occurred on 8607090465 860630 PDR ADOCK 05000440 E PDR
1 a March 12, 1986, was located 2 km southwest of the Calhio wells at a depth of 2 to 3 km. This hypocentral depth is above the crystalline basement and also not believed to have been well induced. Additionally, Dr. Talwani discussed several factors favoring and not favoring an association between the Calhio injection wells and the January 31st event, concluding that the January 31st earthquake was not induced by activities at the Calhio injection wells. The USGS report findings, mentioned above, similarly conclude that the possibility of the January 31st event being well induced is low. Weston (R. Holt) presented response spectra from the main shock recorded in the plant and from one of the thirteen aftershocks with a 2.1 magnitude, recorded by three USGS digital stations between the plant and the aftershock. He compared peaks in the observed aftershock spectra to predicted site responses. The frequencies of the predicted responses were based on the foundation con-ditions (till thickness and shear wave velocity) at the USGS aftershock re-cording sites. Work is in progress to assess the source of the 20 Hertz energy observed in the plant during the January 31st main shock. Paul Fisk summarized the gravity and magnetic data collected by Weston. A northeasterly trending magnetic low runs through the January 31st earthquake epicentral area. Fisk has modeled the gravity and magnetic data assuming lithologic changes in igneous rocks in the basement. It is not known if the gravity and magnetic anomalies are structurally controlled. The conclusion reached thusfar from the above related findings, as well as other findings presented at the meeting, is that there appears to be no evidence in the surface geology in the tectonic region in which the Perry plant is located for future earthquakes of somewhat larger magnitude than those which have occurred in the past and that occurred on January 31, 1986. There is a preponderance of evidence from studies completed to date that the January 31st earthquake was not induced by activities at the Calhio injection wells, or other resource extraction activities in the vicinity of the Perry plant site. CEI will inform the staff by letter of its intention to install a digital broadband seismic network between the Calhio wells and the January 31st earthquake epicenter. The schedule for completing the earthquake confirmatory work was also discussed with CEI. The fact that completion of that work had not progressed in accordance with earlier CEI schedules was expressed by the Project Manager as a critical path schedular matter in obtaining a full power license for Perry. At the time of the meeting, submittal of the information required by the NRC to support full power licensing was 3-4 weeks late. CEI acknowledged that a mid-July 1986 full power licensing date was extremely tight in view of delays in submitting the required information, and agreed to get back to the Project Manager subsequent to the meeting with a new full power license date projection. CEI did however provide revised dates at the meeting for the following outstanding seismology / geology confirmatory items, described in SER Supplement No. 9:
' Complete injection well evaluations and June 17, 1986 1 establish a seismic monitoring program l
1
Assessment of additional seismic qualifications June 17, 1986 of plant equipment Generic evaluation of the energy content of June 17, 1986 seismic events of higher frequency and/or longer duration
- Fault plane solutions of the January 31, 1986 June 23, 1986 earthquake and its aftershocks, and identification of a possible source structure Consideration of the impact of enriched high June 23, 1986 frequency content of the January 31, 1986 earthquake Assessment of faults at the plant site June 23, 1986 In a followup telephone call on June 13, 1986, CEI informed the Project Manager that its revised date for Perry 1 full power licensing was the week of August 4, 1986, and requested that the Commission briefing be sc.*1edulad accordingly. As a result, the Project Manager agreed to propose a July 31, 1986 Commission briefing date to NRC Management, and to target full power licensing for August 5, 1986, at the earliest. The Project Manager emphasized to CEI that any further slippage in the receipt of the above listed outstanding seismological / geological confirmatory information would cause a later full power licensing date, and that the proposed Commission briefing date also assumes successful completion of the Perry 1 initial startup tests. (CEI completed its submission of the required confirmatory work results to the NRC on June 24,1986.)
Original signed 12 John J. Stefano, Project Manager BWR Project Directorate No. 4 Division of BWR Licensing
Enclosures:
DISTRIBUTION As stated . Docket File' SStern NRC Participants NRC'PDR^ cc: w/ enclosures LPDR See next page PD#4 Rdg. WButler JStefano CWoodhead,0 ELD EJordan BGrimes ACRS(10)
/
RBernero / ,. RHouston
#4/PM B PD#4/D Glainas JStefano:lb B'DL 'a 'g WButler BLiaw 6/2.7/86 06/3 86 06/je/86 .4Hermann
W . Assessment of additional seismic qualifications June 17, 1986 of plant equipment Generic evaluation of the energy content of June 17, 1966 seismic events of higher frequency and/or longer duration
- Fault plane solutions of the January 31, 1986 June 23, 1986 earthquake and its aftershocks, and identification of a possible source structure Consideration of the impact of enriched high June 23, 1986 frequency content of the January 31, 1986 earthquake Assessment of faults at the plant site June 23, 1986 In a followup telephone call on June 13, 1986, CEI informed the Project Manager that its revised date for Perry 1 full power licensing was the week of August 4, 1986, and requested that the Commission briefing be scheduled accordingly. As a result, the Project Manager agreed to propose a July 31, 1986 Commission briefing date to NRC Management, and to target full power licensing for August 5, 1986, at the earliest. The Project Manager emphasized to CEI that any further slippage in the receipt of the above listed outstanding seismological / geological confirmatory information would cause a later full power licensing date, and that the proposed Commission briefing date also assumes successful completion of the Perry 1 initial startup tests. (CEI completed its submission of the required confirmatory work results to the NRC on June 24,1986.)
OrigNI stened & John J. Stefano, Project Manager BWR Project Directorate No. 4 Division of BWR Licensing
Enclosures:
DISTRIBUTION As stated Docket File SStern NRC PDR NRC Participants cc: w/ enclosures LPDR See next page PDF4 Rdg. WButler JStefano CWoodhead,0 ELD EJordan BGrimes ACRS(10) 1 / RBernero ( - #4/PM
\h BWEBk., PD#4/D D RHouston Glainas JStefano:lb BOL WButler BLiaw 6/7.7/86 06/3 86 06/jc/86 RHermann
i i Assessment of additional seismic qualifications June 17, 1986 of plant equipment
" Generic evaluation of the energy content of June 17, 1986 seismic events of higher frequency and/or longer duration Fault plane solutions of the January 31, 1986 June 23, 1986 earthquake and its aftershocks, and identification of a possible source structure
- Consideration of the impact of enriched high June 23, 1986 frequency content of the January 31, 1986 earthquake Assessment of faults at the plant site June 23, 1986 In a followup telephone call on June 13, 1986, CEI informed the Project Manager that its revised date for Perry 1 full power licensing was the week of August 4, 1986, and requested that the Commission briefing be scheduled accordingly. As a result, the Project Manager agreed to propose a July 31, 1986 Commission briefing date to NRC Management, and to target full power licensing for August 5,1986, at the earliest. The Project Manager emphasized to CEI that any further slippage in the receipt of the above listed out:tanding seismological / geological confirmatory information would cause a later full power licensing date, and that the proposed Conunission briefing date also assumes successful completion of the Perry 1 initial startup tests. (CEI completed its submission of the required confinnatory work results to the NRC on June 24,1986.)
...g! A j / J hn J. Stef no, P oject Manager / BWR Project [iirec rate No. 4 , D vision o WR L censing
Enclosures:
V As stated cc: w/ enclosures See next page
a ( Mr. Murray R. Edelman Perry Nuclear Power Plant The Cleveland Electric Units 1 and 2 Illuminating Company cc: Jay Silberg, Esq. Mr. Larry 0. Beck Shaw, Pittman, & Trowbridge The Cleveland Electric 1800 M Street, N. W. Illuminating Company Washington, D. C. 20006 P. O. Box 97 E-210 t Perry, Ohio 44081 Donald H. Hauser, Esq. The Cleveland Electric Mr. James W. Harris, Director Illuminating Company Division of Power Generation P. O. Box 5000 Ohio Department of Industrial Cleveland, Ohio 44101 Relations 2323 West 5th Avenue Resident Inspector's Office Post Office Box 825 U. S. Nuclear Regulatory Commission Columbus, Ohio 43216 Parmly at Center Road Perry, Ohio 44081 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Donald T. Ezzone, Esq. Assistant Prosecuting Attorney 105 Main Street Lake County Administration Center Painesville, Ohio 44077 Ms. Sue Hiatt OCRE Interim Representative 8275 Munson Mentor, Ohio 44060 Terry J. Lodge, Esq. 618 N. Michigan Street Suite 105 Toledo, Ohio 43624 John G. Cardinal, Esq. Prosecuting Attorney 4 Ashtabula County Courthouse Jefferson, Ohio 44047 O
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, t Enclosure (2)
PERRY EARTHQUAKE JUNE 11, 1986 NRC/CEI MEETING PARTICIPANT 5 U.S. NRC J. Stefano, Project Manager, DBL P. Sobel, EB/ DBL A. Lee, EB/ DBL L. Reiter, DSR0
- 1. Alterman, RES L. Ong, OPE G. Giese-Koch, PAEB U.S. Geological Survey R. Wesson Cleveland Electric Illuminating Co.
E. Buzzelli M. Hayner Weston Geophysical (CEI Consultant) R. Holt E. Levine P. Fisk P. Turner G. Leblanc Shaw-Pittman Assoc. (CEI Attorney) J. Silberg P. Bangser Geoscience Services J. Fischer U. of South Carolina (CEI Consultant) P. Talwani Gilbert Commonwealth Assoc. (Perry A/E) C. Chen W. Santamour NTS Engineering (NRC Consultant) J. Johnson
}
Endaw (/) ! CEI PRESENTATION ON SSER NO. 9 CONFIRMATORY ISSUES PROGRESS June 11, 1986 INTRODUCTION Confirmatory Items New Information EQUIPMENT SEISMIC MARGINS Report Description Modeling Results GEOLOGICAL / SEISMOLOGICAL STUDIES Overall Summary Review of Seismic Activity Intensity Survey Gravity / Aerial Magnetic Survey Geological Field Mapping Injection Wells
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- IWICIIuguimenay Guide 1.61dumpingunimesaseused. af h ur instrument each,ese new Samrs==P====spesma ase casumasadium asapiirmasin-rack response spectra using iswitu amammused transfer fusuctions. i 2.1 EquipmentQualified byTesting Test Reponse Spectra (TRS) are used to compare with the new " ;2-d !
R Spectra (RRS) of the same dem sing values. The margin a as the ratio of TRS to RRS at the Frequency value with emman m ratso. All TRS envelop RRS except two cases where TRS are enceeded at isolated frequency point. For these cases, the margins, which ase seit larger than one, are defined as the ratios of TRS to RRS at Wee usaeusal frequenoes of the equipment. If thee that of Zero Penod Acce6eration (ZPA)quipment values. are rigid, ese passerwaiti he
- ( 2.2 EquipmentQualified by Analysis '
The margin is defined as the product of spectrum ratio and stress ratio. Spectrum ratio is defined as tne ratio of SSE spectrum to new spectrum of the same damping values at the natural frequency value of the equipment and the stress ratio is the ratio of the allowable stress to the calculated SSE stress. All margins are larger than one. This study of margin quantification as detailed in Appendix A has confirmed the earlier condusion that the short duration, high frequency, low velooty, small displacement earthquake has no impact on perry Power Plant design. It j is appropriate to point out that the margins obtained here are only 9 tone based on testing response spectra and allowable stresses. The aesel margins based on expenence data are expected to be much larger than enese sonown in Appendix A. 1' This generic ede uses the concept of ducasity dennendrandenengr consumed byasingle of freedomawahm., e ~ wasusedto pertensethe demand calcedseiori.~ Ldtna'i3-3sumeusedter pimpen,megee perform parameencstudyand calculation of energyconsumed. Since the elastic spectra of the recorded motion enceeds the design spectra around the isoisted frequency of 20 Hz, this study concentrates on 20 Hz in
, order to evaluate the most critical case. Per Section 111 of the ASME Boiler and i
l l Gilbert / Commonwealth
4 O R R - l Rev. 6 i TABLE A 1 ! SEl$MIC CONFIRMATORY PROGRAM i 1984 PERRY RECORDED EARTH KE EQUIPMENT SELECTED FOR EVALUA FROM { PERRY SEl$MIC EQUIPMENT QUALIFICATION UST 1 80uipessarfasaad MPL # $Y$ftM LOCAfl088 OUAlsles tret. TVPE WOWlME (AAKfEECoot eAAaGast E5W5creenweehvert Nap 8PetC0002A.B Emergenrylervice Water E5W Pumphouse 586* Analysed SP-101 hearlt Gendd 24768.976 1.13
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TABLE R.5-150MMARY OF ADINA FMTg n msedT ANAYLSIS RESULTS Accelesegsaph Seaunic m _ 'i umnax Ratio Locapten Cosnoonent $$f_ m WS146 Event SSE/ Rec Co W EMt 341 5.3 S.3 Wesset, W M. ) 5.4 1.8 Et. GOELW I46 2&5 9.4 3.8 Reactor ENW 3.1 2.5 u Bldg. Mat, Vertical 342 41 R3 EL. 574.8* WS 12.6. 5.2 24 NOTES
- 1. Allowablestress/Sy ratio = 2.0isused forallcases.
- 2. Preload equals zero in allcases.
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l . . t containment vessel was the most severe of all the recorded responses, this particular ( location was selected for further study using the simplified pulse type accelerations. The charactenstics of the acceleration pulses used in these studies are summarimod below. Three full acceleration cydes are used in each case. Earthquake peak Ground Ground W4 Period (sed 7 -M.cy n --
)
Design SSE 0.40 0.20 5.0 , High frequency, 0.55 0.05 20.0 shortduration The primary advantage of using these simplified acceleration pulses is a tremendous savings in computational effort. With these simplifying approximations, it was possible to solve the nonlinear dynamic analysis problem with relative ease with the aid of an ordinary spreadsheet program on a micrucomputer. The LOTUS 1-2-3 program [7] was used for this purpose. C Verification of the spreadsheet template's accuracy was accomplished by independent manual calculations, duplication of textbook problems and by comparison of results with ADINA finite element analysis results for identical problems. The SDOF system used in the LOTUS 1-2-3 analyses is shown in Figure 8.4-3. This system is essentially the same as the one used for the ADINA analyses except for the units of length and certain limitatsons which are imposed on this simplified analysis model. The difference in the length units (feet with ADINA, inches with LOTUS 1-2-3) has no effect on results. I (
; One limitation is that no provisions were made to perform equilibrium l
) iterations at each time step. Another limitation is that only perfectly elasto-plastic material behavior is considered. Finally, due to storage capacity limitations, only three full acceleration cycles are analyzed. Despite these limitations, the results obtained are sufficiently accurate for purposes of studying the effects of short ( - 11 I
n Q
- 1. Updated Seismicity (200 m.)
- 2. Updated Seismicity (50 m.)
- 3. List of Aftershocks
- 4. Histogram of Aftershocks
- 5. Epicentral Distribution of Aftershocks
- 6. Composite Solution of Events 1, 3, 4, 5, 12, 13. First Motions i
- 7. Composite Solution of Events 1, 3, 4, 5, 12, 13. Stress Axes
- 8. Composite Solution of Events 1, 3, 4, 5, 12, 13. Fault Plane Solutions
- 9. Composite Solution of Events 6, 7, 10, 11. First Motions
- 10. Composite Solution of Events 6, 7, 10, 11. Stress Axes
- 11. Composite Solution of Events 6, 7, 10, 11. Fault Plane Solutions
- 12. Stereo View of Hypocenters, az - 205*
- 13. Stereo View of Hypocenters az = 110*
- 14. Data Solutions for January 22, 1983 Event
- 15. Station Distribution for January 22, 1983
- 16. Sensitivity Tests of Epicentral Solution - January 22, 1983
- 17. Summary (graph) of Previous Solutions
- 18. Sensitivity Tests of Epicentral Solution Vp/V, = 1.78
- 19. Sensitivity Tests of Epicentral Solution Vp/V, = 1.73
- 20. University of W. Ontario January 22, 1983 Seismograms
- 21. University of W. Ontario November 11, 1983 Seismograms
- 22. March 12, 1986 Relocation j 23. U. S. Geos Seismogram for March 12, 1986 I
- 24. W.G.C. Smoker Seismogram for March 12, 1986
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,, YEARMODY HRMISEC LATITULE LDNGITUDE DEPTH NP GAP RM3 ERH ERZ HAG
- i cg . ' 19860201 185449.35 41 38.L 7 81 9.17 4.35 20 94 .03 .3 .5 1.5
? 19860202 32248.67 41 38.72 81 9.55 4.85 37 72 .07 .1 .2 .9 I. 19860203 194719.77 41 38.52 81 9.48 5.83 52 75 .03 .2 .2 2.0 fp , 19860205 634 2.47 41 38.50 81 9.27 3.73 31 '. 52 .03 .2 .3 .1 d 19860206 183622.44 41 38.72 81 9.61 5,50 50 47 .07 .1 .2 2.5 19860207 152020.38 41 39.C 3 81 9.22 3.76 44 42 .0F .1 .3 1.1 g) "- 19860210 20613.61 41 3 9.1 J 81 9.39 4.73 21 73 .05 l . 19860223 32948.50 41 39.18 .1 .4 .8
' 81 9.09 5.48 22 76 .06 .2 .4 .1
' 19860224 1655 6.48 41 38.E5 81 9.60 3.25 10 91 .0 ) .5 2.7 .1 e) 19860228 13934.21 41 39.23 81 9.61 3.91 12 ' 91 .05 .3 .5 .1 19860308 204249.68 41 38.(7 81 9.20 3.12 23 65 .13 .3 .7 .1 '19860324 134241.31 41 38.31 81 9.31 3.84 - 12 e) 19860410 65805.71 41 38.51 81 9.55 5.11 22 79 63 .12 .03 .51.8 .2 .3 1.4- .1 Vs1=4.25 k m/s h= 2 km t '. Vp2*6.5 km/s h = 33 km
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! TIME (d a y s) 1 O ASH 0CES.DAT e l
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SOLUTION FILE NAME PCI.0UT 7-JUN-86 12:38 04 Compeeste A ehecke 1.3.4.5.12.13 COMPOSITE Fe b-01. 03. 05. 06. Mo r-24. Ap r 10: 2 eccoc. 56 P polecitsee end 2 ellowed eccer. Threshold = 1.00
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2 POLARITY ERRORS Stellent HLH
i SOLUTION FILE NAME t PCI.0UT 7-JUN-86 12:38604 Compee.t. A ehecke 1.3.4.5.12.17 COMPOSITE Feb-01.03.05.06.Mor-24.Apr los 2 ercee. 56 P polersties end 2 elle ed errer. Thresheid = 1.00
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i SOLUTION FILE NAME s PC2 00T 7-JUN-86 13:07: 43 l Composite A shocke 6,7.10.11 COMPOSITE Feb-07.10.28. Mar-08 30 P polerettee end I ellowed errors Threshold = 1.00
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i SOLUTION FILE NAME s PC2 0VT 7-JUN-86 13sD7643 Composite A ehoeke 6.7.10.11 COMPOSITE Feb-07.10.28.Moe-08 30 P poleraties and 1 ellowed eccoce Threshold = 1 00 l I 1 o e n f
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l Il 2b 2b VECTOR VIEW ALT. ANGLE = 0. A21MUTH = 205 VIEW DIST. = 13. CENTER POINT COORDS = 41.642 -81.155 CENTER POINT ELEV =0
]; c i c . :. a 2b .
VECTOR VIEW ALT. ANGLE = 0 A21MUTH = 205. VIEW DIST. = 13 CENTER POINT COORDS = 41.642 -81 155 CENTER POINT ELEV =0 l! W
Y ~ M5P " dp VECTOR VIEW ALT. ANGLE = 0. A21MUTH = 110. VIEW DIST. = 13. CENTER POINT COORDS= = 41.642 -81.155 CENTER POINT ELEV 0.
~ ~ - 5E d5F ,1 VECTOR VIEW ALT. ANGLE = 0.
AZlMUTH = 110. VIEW OlST. = 13. CENTER PolNT COORDS = 41 642 -81 155 CENTER POINT ELEV = 0.
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Vp/Vs - 1.78 10 T esrM ac a HrMn :ec latitwJe Longitude 04pth 1P RMS ERH ER2 500 Co==ents A !)8J0122 G74557.) 41. 76 7 5 N 81.1172W 1.3 18 0.41 1.4 2.4 0C CLE Incl. 5 Incl. Ne= Readings 8 19830122 074657.7 41.7610:4 81.1113W 0.6 18 0.36 1.6 24 CC Ne= Weight C 196J0122 074657.8 41.7642t4 81.1384W CLE Incl. 5 Incl. Chengo in Model 1.3 16 0.37 2.2 4.4 C0 CLE Esc 1. 5 Incl. Rest Saee op Model 8
]. O 198J0122 074657.9 41.7632:4 31.1074W 2.5 12 0.34 3.5 5.5 C0 CLE Escl.
E 19830122 074657.7 41.7610N 91.1113W 5 Escl. - 0.6 18 0.36 1.6 '2.4 CC CLE Incl. l
. EE 19830122 074657.7 41. 75 2 3 N 81.1017W 0.6 13 0.31 2.3 3.1 CC 5 Incl.
7 19830122 074658.1 41.7693N CLE Incl. 5 Escl. 81.1161W 5.0 13 0.37 2.2 2.8 CC {. G 19830122 074657.9 41.7616N 81.1096W 3.0 13 Ctt Incl. 5 Escl. M=5 0 34 23 2.9 CC CLE Incl. 5 Escl. M=3 J I M 19830122 074657.0 41.7577N 81 1063W 2.0 13 0 32 23 3.0 CC r I 19830122 074657.8 41.7650N 81.1149W 2.0 CLE Inct. 5 Escl. M=2
--J 19838122 0 746 5 7. 9 18 0.38 16 2.3 CC CLE Incl. 5 Incl. M=2
- 41. 76 03 N 81.1171W 3.8 18 0.40 CC I' E 19830122 874658.1 41.7738N 81.1225W 5.0 1.6 2.2 CLE Incl. 5 Incl. M=3 18 0.44 1.6 21 CC L 19830122 074658.1 41.7787N CLE Incl. 5 Incl. H=5
.'* M 19830122 874657.9 41.7709N 81.1134W 81.1107W 5.0 3.0 16 16 0.40 0 38 2.3 2.2 4.4 4.4 C0 C0 CLE Esc 1.
CLE Esc 1. 5 Incl. P= 5
*) N 19830122 074657.9 41.7671N 81.1095W 2.0 16 5 Incl. M=3 ~! 0 37 22 4.4 C0 CLE Emet. 5 Incl. H=2 O 19830122 074658.1 41.7723N 81.1142W 5.0 12 0.37 3.5 5.4 C0 CLE Esc 1.
P 19838122 074657.9 41.7626N 81.1089W 5 Esc 1. M= 5 3.8 12 0.35 3.5 5.5 C0 CLE Esc 1. - 5 Escl. M=3 8 19830122 874657.8 41. 75 78N 81.1062W 2.0 12 0.34 3.5 55 C0 CLE Esc 1. 5 Escl. H=2 i e
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- 2.9 g/cm8 Mafic Intrusive Mafic Intrusive Felsic Intrusive or Low Density Metasediment hl GENERALIZED GEOLOGIC INTERPRETATION
. P GEOLOGIC MAPPING TO LOCATE STRUCTURES IN EPICENTRAL AREA
.l. Stratigraphic Column
- 2. Geologic and Lineament Map
- 3. Photograph 1. Typical Joint
- 4. Joint Orientation
- 5. Photograph 2. Typical Anticlinal Structure
- 6. Rose Diagram of Anticlinal Fold Axes
- 7. Photograph 3. Typical Thrust Fault
- 8. Fault Plane Orientations
- 9. Photograph 4. Detail of Thrust Fault Deformation
- 10. Photograph 5. Photomosaic of Structure
- 11. Detailed Outcrop Map
- 12. Big Creek Tributary Structure Location
- 13. Seismic Refraction and Magnetometer Surveys
- 14. Stratigraphic Section From Borings and Gamma Logs
- 15. Photograph 7. Grand River Structure STRUCTURAL CONTOUR MAPPING OF PALE 0 ZOIC UNITS
- 16. Stratigraphic Column
- 17. Precambrian Wells in Ohio with Interpreted Lithologies (Lucius, 1985)
- 18. Precambrian Surface - Northeastern Ohio k
- 19. Top of " Packer Shell"
- 20. Well Locations
- 21. Top of Delaware Limestone
- 22. Cross-sections B-B C-C m - - , -.-v. -.,. , yn---
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, u, 1/22/83 DEPTHS .c q A PADH 11/19/83 C R HIO x 0.0+
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10' (Modified irom Wesson. Pers. Come, 19861 Figure 5. Preliminary U.S.G.S. and revised Weston location of 3/12/86 event and location of the 1983 earthquakes, s e { l
1 Cunningham, V A 2 Dixfield, ME 15 9 3 La ncaster, P A 13 5 4 Gaza, NH 5 Bath, ME
- 2 C 10 '
- 6 Mir amic hi, N.B. i 4
4 e 5 j 7 Goodnow, NY , 7 , j 8 Sharpsburg, KY i h # 14 [ Il St. Dona t, Quebec 9 10 North Gower, Ontario
]F) I 3
- 11 Ardsley, NY t 70.W 12 Quebec-ME border g 13 Maniwa ki, Quebec 9 8
- l 8 1
- 14 Attica, NY i 15 St-fidele, Quebe c 1, 16 5. Central Illinois
I7 17 La f ayette, G A
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18 Knnxville, TN I e 4.0 - 4.4 l 0 4.5 - 4.9' i l G 5.0 - 5.4'
# G 5.5 - 5.9 'i 80*W l
Figure 27. Locations of eastern U.S. tectonic earthquakes with M2 4.0 which has occurred since the mid 1960's. l
a . FACTORS FAVORING THE LEROY EARTHQUAKE BEING INDUCED BY FLUID INJECTION LARGE FLUID VOLUME i PUMPING RATES i PERMEABILITY IN mDARCIES TIME LAG BEIWEEN INJECTION AND SEISMICITY ONSET THEORETICALLY POSSIBLE UNDETECTED MICR0 EARTHQUAKES (M4.2.0) 1 i i l
I FACTORS AGAINST.THE LEROY EARTHQUAKES BEING INDUCED BY FLUID INJECTION VERY FEW EARTHQUAKES LOW b-VALUES t SHORT SEQUENCE TEMPORALLY ABSENCE OF INTENSE SEISMICITY IN VICINITY OF CALHIO WELLS LACK OF KNOW FELT (M(2.0) EARTHQUAKES IN " CORRIDOR" BETWEEN WELLS AND EPICENTRAL AREA i r 1 i t I l
- ~ _ _ _ _ _ _ _ _ _ , ,_ ___ _ - _ _ , __ . _ . _ . , , , , - . _ _ _ . _ , . . - . _ _ , , . . _ . , . . . _ . _ . _ _ _ _ . _ . _ . _ _ _ _ _ ._ ._ ._ _ _ _ _ _ _ . _ _ . . _ , . _ , - . _ ,
1
, a , 75 IfeUCED EARTHQUAKE SEQUENCE 8 43148)
I (1814) l 1800 =' * (.
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l Figure 27. A eesperison of the number of evetits in documented cases of well injection induced seismicity-with the Leroy sequence. Ilote the differences in the recording period $in parentheses, and the detection threshold.
- e ; FACTORS FAVORING LEROY EARTHQUAKE BEING A TECTONIC EVENT CLUSTERED PATTERN SIMILAR TO OTHER TECTONIC EVENTS NO. OF AFTERSHOCKS COMPARABLE TO OTHER TECTONIC EARTHQUAKES DURATION OF AFTERSHOCK SEQUENCE SIMILAR TO OTHER TECTONIC EARTHQUAKES MAGNITUDE OF MAIN SHOCK COMPARABLE TO OTHER EVENTS IN EUS LEROY SEQUENCE OCCURRED IN REGION OF KNOWN HISTORICAL SEISMICITY
(
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- MAGNITUDE , e ; -
f Figure 21. Bamber'of $f tersho'cks of tectonic eartfutuakes in saatess 5.8.
! Note the differences 1 \ :1[theree"6tdingperiodsandmagattades.
I l 4
- 1 CONCLUSION LEROY SEQUENCE WAS A "RUN OF THE MILL" NORMAL TECTONIC s
EARTHQUAKE AND IT'S AFTERSHOCKS I i l !}}