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OLEN ELLYN, ILLINOIS 60137 l'
FEB 051986 Docket No. 50-440 Docket No. 50-441 The Cleveland ETectric Illuminating.
Company ATTN: Mr. W rray R. Edelman Vica President Nuclear Group.
Post Office Box 5000 Cleveland, OH 44101 Gentlemen:
This confirms our plans discussed on February 5, 1986, to meet with you and others of the Cleveland Electric Illu:ninating Company's staff at 10:00 a.m.
and 1:00 p.m. on February 11, 1986 at the Perry Training Center, Perry. Ohio.
The purpose of the first meeting is to discuss your review of the January 31 j
1986 earthquake. The second meeting will be to discuss the operational readiness to load fuel at the Perry Unit 1 plant.
We will gladly discuss any questions you have concerning this meeting.
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Sincerely, (eLadk k' +-h Charles E. Norelius, Director DivisionLof Reactor Projects
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J. J. Waldron, Manager, Perry Plant Technical Department M. D. Lyster, Manager, Perry Plant
.0perations Department L. O. Beck, General Supervising
.. Engineer, Nuclear Licensing and Fuel Management Section DCS/RSB(RIDS)
Littnsing Fee Management Branch Resident Inspector, RIII l
Harold W. Kohn, Ohio EPA Terry J. Lodge, Esq.
James W. Harris, State of Ohio Robert H. Quillin, Ohio Department of Health 8605300683 860321 PDR FOIA HIATT86-91 PDR h
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.n/6ff4 DRAFT RESPONSETOCONGRESSIONAL(CONGRESSMANECKART/SEIBERLING)
QUESTIONS RELATED TO THE EARTHQUAKE IN THE VICINITY OF THE PERRY PLANT l
Question: Please inform us by 10:00 am Monday, February 3 whether this earthquake caused seismic forces at the. Perry site in excess of those specified in the seismic design for the Perry Reactors.
Answer:
The analysis of the recorded seismic forces to which the plant was subjected are currently being perfomed. The analysis is somewhat complex; and the plant system has nine seismic detection instruments of three different types. One type had been recently calibrated and the other two were in the process of being re-calibrated and checked at the time of the event. Representatives of the two instrumer,t vendors involved have been on site and are processing the data. The vendor reports are not expected for several days. heliminary data, based on licensee and NRC readings of some instrument readouts, indicated that accelerations over a narrow range of frequencies (approximately 20 bz and higher) appear to have exceeded the design basis values of the Operating Basis Earthquake (0BE) acid possibly the Safe Shutdown Earthquake (SSE) for a brief period of time.
Further analysis of the significance of this data will be perfonned i
after the report from the seismic instrument vendors is received.
This analysis is currently being perfonned by the licensee.
However, the Kinemetrics data, as analyzed by their computer indicates the OBE snd SSE were exceeded for short duration at high 1
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DRAFT frequencies. The licensee is currently reviewing this data for any impact on the plant design basis.
Question: Please indicate the source of data which was used in obtaining the seismic force estimates, as well as a description of the process which was used in converting seismographic data into seismic force i
1 estimates.
Answer:
The seismic monitoring instrumentation at the Perry site includes the following:
P ENGDAHL Instruments Peak Shock Recorder Peak Acceleration Recorder i
i Response Spectrum Annunicator (related to the Peak Shock r
Recorder) t These instruments were manufactured by:
ENGDAHL Enterprises
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2590 Monterey Avenue i
Costa Mesa, CA 92626 714-540-0398 Technicians from ENGDAHL were on site at the time of the earthquake to calibrate these instruments. One instrument, the peak shock I
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DRAFT recorder, was calibrated just prior to the earthquake, Mr. Engdahl, the company president was dispatched to the site following the event to analyze the data for the licensee.
The ENGDAHL instrument records a permanent record by scribing a metal plate to record peak shock and peak acceleration. These plates are then interpreted using a high powered magnification device by.an individual with unique skill and expertise. This data is then recorded and provided to the licensee's engineering staff to interpret and plot against the plant design basis. The Peak Shock Recorder also generates a signal that is transmitted to the control room to the Response Spectrum Annunciation to provide the plant operator with immediate results of the earthquake. The Response Spectrum Annunciator provides visual warning that predetermined acceleration limits, derived from a response spectrum, have been exceeded at certain frequencies. These banks of lights indicate peak shock in the North / South, East / West, and Vertical directions.
There are three banks of red and amber lights that indicate exceeding, at various frequencies, of 70 percent of the Operating Basis Earthquake (OBE) and 100 percent of the OBE. During this earthquake the annunciators were illuminated as follows:
Hertz North / South Vertical East / West 16 HZ Amber
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20.2HZ Amber / Red Amber / Red 25.4H2 Amber / Red 3
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DRAFT The data from the ENGDAHL instruments is currently being analyzed by the licensee.
In addition to the ENGDAHL instruments, the Perry site also had Kinemetrics accelographs, time history recorders, installed. These instruments were calibrated in December 1985.
These instruments were manufactured by:
Kinemetrics Systems Two Twenty Two Vista Pasadena, CA 91107 213-795-2220 A technician from Kinemetrics was dispatched to the site following the earthquake to assist in retrieving, providing and assisting in analyzing the data.
The Kinemetric's instrument is a strong motion acceleration system that is multi-channel centralized recording magnetic tape accelograph that detects and records strong local earthquakes.
The record from the magnetic tape can also and was reproduced on paper tapes for preliminary analysis. The magnetic tape data requires detailed analysis by a computer to identify frequency range "G: forces, duration of the event, and to develop a response spectra of the actual event.
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1 DRAFT l
This analysis was perforined by Kinemetrics and the results supplied to the licensee and the NRC.
This data is currently being analyzed.
A check calibration is required to be periodically perforined by plant technicians and was performed in December 1985 and imediately following the earthquake prior to removing the tapes. These traces stored on the magnetic tape can then be compared to verify calibration prior to and following the earthquake.
The licensee in concert with their vendors began calibration of both the ENGDAHL and Kinemetics instruments on February 5, 1986. The NRC plans to observe these calibrations.
Question: In addition, please answer the following questions:
hhat will be the effect of this event upon the Perry fuel load date?
Answer:
Impact is unknown at this time - NRR?
Question: What was the nature, scope and extent of damage to safety related and non-safety related structures, systems and components? What, if any leaks, occurred in safety 'and non-safety related systems?
Answer:
A significant number of safty and non-safety systems were in operation, since the plant is in pre-operational testing. With the 5
DRAFT following exception, these systems continued operating with no problems throughout the event. Three systems tripped as designed when associated circuits actuated; (1) the auxiliary boiler used for plant heating tripped due to a change' in water level, (2) an air compressor tripped due to compressor vibration, and (3) a vibration monitor on the main generator tripped two breakers in the main j
switch yard, there was no loss of offsite power.
Plant walkdowns by the Perry staff and the NRC team have revealed no significant damage. Pipe movement was observed on both safety.and non-safety systems as expected with no apparent damage. A flange on S
a pipe on a hot water heater in the radioactive waste treatment building was observed to have a 20-to-30 drop per minute leak, and i
some small hairline cracks were observed in concrete walls in the l
auxiliary, intennediate and radioactive waste treatment buildings.
Field inspections by the NRC of these conditions and other abnormal conditions identified by the applicant revealed that some if not all existed prior to the earthquake. The observed conditions in the concrete walls do not appear to be abnormal or structurally i
significant.
In non-seismic areas of the plant, objects fell over on desks, one light fell a few inches, and some ceiling tile dust was shaken loose.
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The new fuel and other radioactive materials on site were in storage and were apparently not affected. There were no radiological consequences on or off site.
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DRAFT Region III dispatched an additional five man team to the site on i
February 5,1986, to perform a more detailed inspection by walking down selected systems and by inspection items such as piping, valves, pipe supports / restraints / snubbers, welds, anchor bolts, attachments, HVAC ducts, electrical cable tray and conduit, batteries / racks, electrical switchgear, and foundations. The team will be inspecting for items such as damage, distortion, impact, deformation, anchorage, looseness and cracking.
NRR will also be sending a four man team to the site to inspect i
specific equipment.
Question: Did the devices which record seismic data perform in accordance with their procurement specifications?
i Answer:
The seismic instrumentation was not required to be operable prior to the issuance of the low power license. The licensee was in the process of preparing these instruments for plant operations by performing the necessary calibration, operational checks and tests.
l The Kinemetric's instruments were calibrated in December 1985 and were operational. The ENGDAHL instruments were in the process of being calibrated at the time of the earthquake. The seismic data from those instruments is currently being analyzed by the licensee's l
engineering staff. The staff believes that the Kinemetrics data is r
accurate. The ENGDAHL data is more difficult to evaluate due to the subjective nature of interpretation and calibration status.
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DRAFT Question: Was the seismic data analysis performed in a timely and accurate manner?
Answer: The staff believes that the seismic data analysis is being performed in both a timely and accurate manner.
This process is somewhat complex considering the number and different instruments involved.
The Kinemetrics data requires a computer analysis of the magnetic tapes to identify the various parameters of the earthquake. This data then has to be plotted against the design response spectra and analyzed by the licensee. Results exceeding the design basis will have to be analyzed and resolved by the licensee's engineering staff, their Architect / Engineer and consultants. NRR will be reviewing this process and its results.
Not all of the ENGDAHL data can be relied on due to the lack of current calibration and poor quality of data from some instruments in the plant. Some of the plates had anomalous scratches on them which Mr. Engdahl attributed to causes other than the earthquake; i.e., damage during construction.
Question: At what time was the NRC operations center notified of this event?
At what time was the Commission notified? At what time were the relevant government entities in the Perry emergency planning area notified? Were these communications conducted in the timely manner specified in the Perry Emergency Plan?
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DRAFT Answer:
The event and notification times and whom was notified are as follows:
Time (EST)
Event / Notification 11:47 Earthquake l
12:06 Site area emergency declared by Perry Plant f
12:16 FEMA notified NRC of earthquake in area 12:25 Astabula County notifiied by Perry Plant Geauga County notified by Perry Plant Lake County notified by Perry Plant 12:29 NRC Operations Center (OPS) notitied by Perry Plant. The NRC OPS Center subsequently notified Region III 12:40 State of Ohio notified by Perry Plant 15:00 Commission notified by NRC management The emergency plan is not required to be implemented until a low power license is issued. All notifications were prompt and as required by the emergency plan except the local governments were reportedly notified 4 minutes late. Region III dispatch'ed an i
Emergency Preparedness inspector to the site to verify the effectiveness of the Emergency Plan.
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t*160 Amin 190MMMO ART-lR[F86-098 Date FIbruary 6,1986 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety cr public interest significance. The information is as initially received without VIrification or evaluation, and is basically all that is known by the Region III staff on this date.
Facility: Cleveland Elec. Illuminating Licensee Emergency Classification:
Perry Nuclear Power Plant Notification of an Unusual Event Perry, OH 44081 Alert XX Site Area Emergency Docket Nos: 50-440; 50-441 General Emergency Not Applicable Subjtct: EARTHQUAKE (SECOND UPDATE)
S21smic instrumentation at John Carroll University in the Cleveland area registered a slight earthquake tremor at 1:36 p.m. (EST), February 6,1986. A spokesman for the university told Region III (Chicago) that he could not give a magnitude, but if he could it would be very small. He added that the epicenter was located south of the Perry Nuclear Plant.
The resident inspectors at Perry said they did not feel the aftershock. Plant seismic instrumentation also did not register the tremor.
However, the after shock was felt by some area residents who called local public agencies for verification.
On January 31, 1986, the Cleveland area was struck by an earthquake registe: ring 5.0 on the Richter scale. An NRC Augmented Investigation Team was dispatched to the site and ditennined that there was no apparent structural damage to the Perry plant as a result of the quake. A team is still on site.
In PNO-III-86-09 it was stated that the Palisades plant had no registered ground movement as a result of the quake in Michigan on January 31, 1986.
It was later found that one instrument did regi' ster the quake.
It is presently being analyzed.
The States of Ohio and Michigan will be notified.
The resident inspectors notified Region III of the aftershock at 1:45 p.m. (EST),
February 6, 1986. This infonnation is current as of 4 p.m., (EST), February 6,1986.
1 CONTACT:
R. Knop C.
us FTS 388-5547 FTS 388-5717 DISTRIBUTION:
H. St.
ED0 NRR E/W Willste Mail: ADM:DMB Chainnan Palladino PA IE NMSS DOT:Trans only Conin. Zech ELD OIA RES Comm. Bernthal AE00 Conrn. Roberts Consn. Asselstine SP Site Regional Offices ACRS SECY INP0 // W NSAC 4.:tt CA RIII Reside'nt Office PDR Licensee:
,$ : 2:7 (Corp. Office - Reactor Lic. Only)
$f245
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Region III Lp.
Rev. November 1985
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