ML20153G770
| ML20153G770 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 02/13/1986 |
| From: | Engdahl P CLEVELAND ELECTRIC ILLUMINATING CO., ENGDAHL ENTERPRISES |
| To: | |
| Shared Package | |
| ML20153G706 | List: |
| References | |
| OL, NUDOCS 8602280422 | |
| Download: ML20153G770 (34) | |
Text
{{#Wiki_filter:UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Appeal Board In the Matter of )
)
THE CLEVELAND ELECTRIC ) Docket Nos. 50-440 ILLUMINATING COMPANY, _E T_ _A _L . ) 50-441 (Perry Nuclear Power Plant, ) Units 1 and 2) ) AFFIDAVIT OF PAUL D. ENGDAHL City of Washington )
- ss:
District of Columbia ) Paul D. Engdahl, being duly sworn, deposes and says as follows:
- 1. I, Paul D. Engdahl, am President of Engdahl Enter-prises ("Engdahl"). Engdahl designs, develops, and manufac-tures seismic instruments used principally at nuclear power plants in the U.S. and abroad. At present, Engdahl seismic instruments are installed in over 70 domestic and foreign nuclear power plants. My business address is 2850 Monterey Av-enue, Costa Mesa, California 92626.
- 2. A statement of my professional qualifications is attached to this Affidavit as Exhibit "A." I began working with response spectra recorders in 1953 while employed at the 8602280422 860225 DR ADOCK 050 4]O
U.S. Naval Ordnance Test Station in Pasadena, California. Since that time, I have performed a variety of work involving response spectra recorders and peak accelerographs. I have in-vented and hold patents for a number of different types of re-sponse spectra recorders and peak accelerographs. These in-clude the Engdahl Peak Shock Recorder, Models PSR1200-H/V and PSR1200-H/V-12A, and the Engdahl Peak Acceleration Recorder, Model PAR 400, that were installed and operational at the Perry Nuclear Power Plant on January 31, 1986, as discussed below.
- 3. The Engdahl recorders installed at Perry conform to the requirements of American National Standards Insti-tute/American Nuclear Society Standard ANSI /ANS-2.2-1978
(" Earthquake Instrumentation Criteria For Nuclear Power Plants") and to NRC Regulatory Guide 1.12 (" Nuclear Power Plant Instrumentation For Earthquakes, Rev. 1"). I am certified as meeting the Level III requirements of ANSI N45.2.6-1978 to read, reduce and evaluate the data recorded by these instru-ments.
- 4. During the January 31, 1986 earthquake that occurred in the vicinity of the Perry Plant, the Engdahl seismic instru-ments installed in the plant recorded the response spectra and the peak accelerations associated with the earthquake. I and a member of my staff have since reduced the data that was recorded. The data, and the results of my evaluation of the data, are discussed in " Report On The Peak Shock Recorders And Peak Acceleration Recorders Installed At The Perry Nuclear
Power Plant During The Seismic Event on January 31, 1986" dated February 7, 1986 (Exhibit "B" hereto). I have personal knowl-edge of the matters set forth in this Affidavit and the atta-ched exhibits, including Exhibit B, and believe the information in the Affidavit and accompanying exhibits to be true and cor-rset. ALk kr Y d Paul D. Engdahy' ' Subscribed and sworn to before me this 13 D day of February, 1986. , 6% h , Notary Public
<VI d6 My Commission Expires:
Nh Agire.% 7 14,1990
~ 4
Exhibit "A" PROFESSIONAL QUALIFICATIONS OF PAUL D. ENGDAHL Employment 1971 - Present President, Engdahl Enterprises General management of company. The company designs, develops, manufactures, installs, and calibrates seismic instrumentation. Most of these instruments are purchased for use in nuclear power plants. 1964 - 1971 Chief Mechanical Engineer, Astroscience Corporation Management of mechanical engineering. Dc-sign and development of high frequency (one megahertz) multi-channel tape record-ers used for high speed data gathering. 1960 - 1964 Retired 1958 - 1960 Operations Manager, Leach Corporation General management of company division in-volved in the design, development, and man-ufacture of response spectrum recorders and high environmental, multi-channel tape re-corders. 1956 - 1958 President, Engdahl Enterprises Designed, developed, and manufactured re-sponse spectrum recorders and multi-channel high environmental tape re-corders. Products sold to Leach Corpora-tion. 1955 - 1956 Mechanical Engineer, North American Instru-ments
Management of mechanical engineering. De-sign and development of high g peak accel-eration recorders and multi-channel tape recorders. . 1952 - 1954 Mechanical Engineer, U.S. Naval Ordnance Test Station Design and development work on steering mechanisms for torpedos, exploders for war-heads, and reed gages (response spectrum recorders) for measuring the impacts of high speed water entry of torpedos. 1951 - 1952 Mechanical Engineer, Consolidated Vultee Aircraft Company Design and development of steering mecha-nisms for anti-aircraft missiles. 1949 - 1951 Mechanical Engineer - Self employed Education University of Minnesota (Bachelors in Mechanical Engineering, 1949) Affiliation American Nuclear Society working group on ANSI /ANS-2.2 " Earth-quake Instrumentation Criteria for Nuclear Power Plants," and ANSI /ANS-2.10 " Guidelines for Retrieval, Review, Processing and Evaluation of Records Obtained from Seismic Instrumentation." Patented Inventions Six patents on instruments for recording response spectra and peak accelerations. Technical Publications various publications on response spectrum recorders, exploders, and steering mechanisms.
l EXHIBIT "B" l ENGDAHl. ENTERPRISES 2850 Monterey Avenue, Costa Mesa, California 92626, (714) 540 4398 l I Document Number 120910 Revision Number N/C Page 1 of 14 i REPORT ON THE PEAK SHOCK RECORDERS AND PEAK ACCELERATION RECORDERS INSTALLED AT THE PERRY NUCLEAR POWER PLANT DURING THE SEISMIC EVENT ON JANUARY 31,1986 Engdahl Enterprises Copy Number 04 Costa Mesa, CA 92626
, February 7,1986
ENGDAHL ENTER'PRISES Costo Mesa, CA 92626 , CONTENTS
- 1. Introduction 3
- 2. Instrument Descriptlons 3
- 3. Designatiens, Locations and Calibration 4 Status of Instruments
- 4. Data Reduction 5
- 5. Data Evaluation 5
. 6. Current Status 7
- 7. Conclusions 7 APPENDICES:
A. Bulletins (3) F 2 Document No 120910 NiC
ENGDAHL ENTERPRISES Costo Mesa, CA 92626
- 1. INTRODUCTION On January 31,1986, the effects of a seismic event were recorded by the Engdahl PSR1200, Peak Shock Recorders and PAR 400, Peak Acceleration Recorders at the Perry Nuclear Power Plant located at Perry, Ohio. The record plates were removed from the recorders within hours and new plates were installed by Perry Plant and Engdahl personnel. A preliminary data reduction was completed the same day. A second independent data reduction was made on February 2,1986. Photographs of all of the scribed records were made on February 2-3, 1986.
This report reviews the status of the instruments at the time of the event, contains the recorded data, and evaluates the data. The report also reviews the present status of the recorders and work to be done in the near future.
- 2. INSTRUMENT DESCRIPTIONS 2.1 PEAK SHOCK RECORDER (Response Spectrum Recorder and Response Spectrum Switch)
The Model PSR1200-H/V, Peak Shock Recorder, is designed to meet the characteristics of the Response Spectrum Recorder and the Response Spectrum Switch as described in the American Nuclear Society Standard ANSI /ANS-2.2-1978, " Earthquake Instrumentation Criteria for Nuclear Power Plants", and NRC Regulatory Guide 1.12 (Rev.1), " Instrumentation for Earthquakes". It is a completely passive device covering the range of 2-25 HZ in 1/3 octave increments. Damping of each accelerometer is nominally 2%. It is completely self contained. Three recorders are arranged triaxially. Twelve reeds of different lengths and weights, one for each frequency, are fabricated from spring steel. A diamond-tipped stylus is attached to the free end of each reed to inscribe a permanent record of its deflection on one of twelve record plates. The record plates are aluminum, plated with successive layers of nickel, tin, and lead-tin. The Model PSR1200-H/V-12A comprises the standard PSR1200-H/V plus the capability of providing instantaneous warning signals when preset accelerations at selected frequencies have been exceeded. This is achieved by adding dual contacts which are closed by the reed when it is deflected through a predetermined distance. 3 Document No. 120910 N/C
ENGDAHL ENTERPRISES Costa Mesa, CA 92626 2.2 PEAK ACCELERATION RECORDER (Peak Accelerograph) The Model PAR 400, Peak Acceleration Recorder, is designed to meet the characteristics of the Peak Accelograph described in ANSI /ANS-2.2-1978 and NRC Regulatory Guide 1.12. It senses and records peak accelerations triaxially. It is a self-contained passive device requiring no external power or control connections and has a minimum band width of 0 to 26 Hertz with a sensitivity as low as .01 g. The recorder is nominally 60% damped. A diamond tipped scriber at the end of an amplifier arm traces a very fine visible permanent record on an aluminum record plate with successive layers of nickel, gold, and burnt gold.
- 3. DESIGNATIONS. LOCATIONS. AND CALIBRATION STATUS OF INSTRUMENTS 3.1 D51-R160 - REACTOR BUILDING FOUNDATION Triaxial Response Spectrum Recorder (PSR1200-H/V-12A)
Location - 574' Reactor Building foundation mat, azimuth 210* (see drawing D-811-801 and D-814-663-909) Active scratch recorder, which alarms on control room panel 1H13-P969, annunciator panel D51-R215 Most recent calibration on 1-14-85.
- 3.2 D51-R170 - REACTOR BUILDING I.D.W. 630' PLATFORM Triaxial Response Spectrum Recorder (PSR1200-H/V)
Location - inside Drywell platform - 630', azimuth,240' (see drawing D-811-605 and D-814-665-910) Most recent calibration completed on 1-30-86.
- 3.3 D51-R180 - HPCS PUMP BASE M AT Triaxial Response Spectrum Recorder (PSR1200-H/V)
Location - HPCS Pump Room - Auxiliary Building foundation mat 574'(see drawing D-811-701 and D-214-663-911) Equipment being calibrated on 1-3.1-86 during earthquake. (North-Soutn and East-West recorders operable). Previous calibration on 1-14-85. *
- Calibration interval is established at 18 months by ANSI /ANS -
2.2-1978, " Earthquake Instrumentation Criteria for Nuclear Power Plants." 4 Document No 120910 N/C
ENGDAHL ENTERPRISES Costo Mesa, CA 92826 3.4 D51-R190 - RCIC PUMP BASE M AT Triaxial Response Spectrum Recorder (PSR1200-H/V) . Location - RCIC Pump Room - Auxiliary Building foundation mat 574' (see drawing D-811-702 and D-814-663-912) Equipment being calibrated on 1-31-86 during earthquake (all recorders operable). Previous calibration on 1-14-85.* 3.5 D51-R120 - REACTOR RECIRCULATION PUMP Peak Acceleration Recorder (PAR 400) Location - inside Drywell - 574' elevation. (see drawing D-811-602 and D-814-663-906). Located on recirculation pump B33-C001 A. Most recent calibration 12-4-85.* 3.6 D51-R140 - HPCS PUMP BASE MAT Peak Acceleration Recorder (PAR 400) Location - Auxiliary Building - 574' HPCS Pump Room - Auxiliary Building foundation mat 574' (see drawing D-814-633-908 and D-811-701) Most recent calibration on 1-30-86. *
- 4. DATA REDUCTION The following tabulations on Pages 8 through 13, show the initial data reduction made on January 31, 1986 by Perry Plant personnel and a field representative of Engdahl Enterprises. An independent data reduction made by Engdahl Enterprises on February 2,1986 is listed alongside the initial reduction.
t A total of 129 data point readings were tabulated. A comparison of the two independent data reductions indicates a very close correspondence. Most indicate no significant differences. For those cases where differences exist, the greatest differences (with one exception) are on the order of 0.03g. The largest acceleration difference between the two data reductions was 9% (MPL Number D51-R170, reed number 12, vertical). Even in this case, the difference is within tolerances allowed by industry standards.
- 5. DATA EVALUATION The record plates from three of the four triaxial PSR1200 recorders had many scratches and some had multiple zero lines which made them difficult to read. This condition was due to construction work in progress since the recorders had been calibrated and installed in January 1985. Although initial review of these plates indicated that data reduction might be questionable, further review (including comparison with data from the Kinemetries Time-History recorders") has established the validity of the data reduction.
**Kinemetries/ Systems, " Strong-Motion Data Report for the ML 5.0 Earthquake of 1147 EST January 31,1986" (February 4,1986) 5 Document No. 120910 N/C
ENGDAHL ENTERPRISES Costa Mesa, CA 92626 5.1 D51-R120, Reactor Recirculation Pump and D51-R140, HPCS Pump Base Mat The records from these PAR 400 recorders were good. D51-R120 had the best records. D51-R140 had poorer zero lines but the results were nonetheless in close agreement with Reactor Building foundation mat data from Kinemetrics Time-History recorder data. 5.2 D51-R160, Reactor Building Foundation A reading was made for each reed in the horizontal directions. The North / South accelerations were in very close agreement with the response spectrum generated from the Time-History recorder (D51-N101). The East / West did not agree as well but was similar. Only six of twelve vertical data points were readable. All of these values were quite low indicating a low vertical component of acceleration. 5.3 D51-R170, Reactor Building 1.D.W. 630' Platform The most readable of the PSR1200 records were on the Reactor Building 1.D.W. 630' Platform. The North / South was especially good with very good zero lines. The East / West and the vertical recorders each had two of twelve records that were difficult to read.
- 5.4 D51-R180, HPCS Pump Base Mat and D51-R190, RCIC Pump Base Mat These two installations are both on the Auxiliary Building foundation mat but separated by approximately 80 feet. The resulting North / South response spectra are almost identical. The East / West response spectra were similar. The vertical D51-R180 recorder was not in service due to recalibration activities, so no comparison can be made. The vertical D51-190 recorder is questionable since the zero lines were offset by large amounts in most cases.
5.5 Dual records were noted on some of the record plates. The clearest of these are on D51-R160 East / West. A separate tabulation is made of the six best records (see page 14). A dual record is normally made when the record plate moves a very slight amount (.001 to .002 inches) after one record is made and then a second record is made. It is possible that all six plates moved at low levels and that the second record is just a continuation of the same event. It is also possible that the low level event was recorded and then the r.lates moved before the second event. 6 Document No. 120910 N/C
l ENGDAHL ENTERPRISES Costa Mesa, CA 92626
- 6. CURRENT STATUS 6.1 At present, the instruments are in operation with new record plates except the vertical recorder, D51-R180, which has been removed for recalibration.
6.2 Plans have been made to start the recalibration of all of the instruments on February 10, 1986. This recalibration is in preparation of fuelloading, and not as a result of the seismic event.
- 7. CONCLUSIONS Although the records were not always easy to read because of activity at the plant during the construction phase, the records were clear enough in most cases to give very good overall results.
Recalibration of the instruments was not required by the seismic event. Recalibration will be performed starting February 10, 1985 in preparation for fuel loading. Paul D. Engdat)f c]w 7 Document No 120910 N/C a - - _
ENGDAHL ENTERPRISES Costa Mesa, CA 92626 MPL NUMBER: D51-R120 LOCATION: REACTOR RECIRCULATION PUMP ACCELERATION (g) SENSOR LOCATION 1-31-86 2-2 86 NORTH / SOUTH (L) .32 .318 EAST / WEST (T) .10 .106
- VERTICAL .07 .048 *
- Zero lines not clear, best estimate 8 Document No. 120910 N/C
ENGDAHL ENTERPRISES Costo M:sa, CA 92626 MPL NUMBER: D51-R140 LOCATION: HPCS PUMP BASE MAT - 574* ACCELERATION (g) SENSOR LOCATION 1-31-86 2-2-86 NORTH / SOUTH (L) .15 .167 E AST/ WEST (T) .06 .058 VERTICAL .04 .029 9 Document No. 120910 N/C
l ENGDAHL ENTERPRISES Costa Mesa, CA 92826 MPL NUMBER: D51-R160 LOCATION: REACTOR BUILDING FOUNDAT ON - 574' ACCELERATION (g) NOMINAL FREQUENCY North / South East / West Vertical NU BER (HERTZ) 13186 2286 13186 2286 13186 2286 1 2.00 .027 .027 .029 030 .007 2 2.52 .038 .038 .046 .046 .013 .011 3 3.17 .062 .060 .039 .040 4 4.00 .032 .035 .022 .026 5 5.04 .067 .069 .056 .054 .018 6 6.35 .065 .075 .054 .054 .016 I ** 7 8.00 .143 .133 .056 .051 .010 8 10.1 .136 .091 .176 .160 .061* .053* 9 12.7 .196 .227 .236 .230 .032 .038 10 16.0 .286 .305 .284 .284 .101 .111 11 20.2 1.04 1.02 .605 .586 .224 12 25.4 .7657 .766 .540 .513 .329 "C" surface
** Unreadable l
I 10 Document No 120910 N/C
l l ENGDAHL ENTERPRISES Costo Mtsa, CA 92626 MPL NUMBER: D51-R170
- LOCATION: REACTOR BUILDING 1.D.W. 630' PLATFORM - DW 630', 240' ACCELERATION (g)
NOMINAL FREQUENCY North / South East / West Vertical NU BER (HERTZ) _ 13186 2-2 86 13186 2 2-86 13186 2286 1 2.00 .047 .048 .049 .051 .007 .007 2 2.52 .082 .082 .086 .084 .013 3 3.17 .184 .184 .144 .140 .015 .014 4 4.00 .226 .223 .128 .127 .023 .023 5 5.04 .132 .134 .158 .158 .035 .033 6 6.35 .131 134 .058 .055 .033 .030 7 8.00 .104 .104 .109 .090 .019 (2) 8 10.1 .093 .093
.052 .093 .085 (1) (2) 9 12.7 .188 .182 .166 .080 .198 .199 (2) 10 16.0 .194 .204/ .348 .312 .490 .500
.167 11 20.2 .152 .152 .191 .175 .973 .973 12 25.4 .114 .091 .155 .158 1.7 1.54
- Unreadable (1) Unusuel appearance j (2) Very difficult to read - best estimate i
1 i
~
11 Document No 120910 toc
ENGDAIIL ENTERPRISES Costa M:sa, CA 92626 MPL NUMBER: D51-R180 LOCATION: IIPCS PUMP BASE MAT - 574' ACCELERATION (g) NOMINAL FREQUENCY North / South East / West Vertical
- N BER (HERTZ) 1-31 86 2 2-86 13186 2-2-86 13186 2 2-86 1 2.00 .0198 .020 .022 .021 - -
2 2.52 .0358 .036 .033 .031 - - 3 3.17 .0677 .068 .045 .048 - - 4 4.00 .0474 .047 .022 .020 - - 5 5.04 .0637 .064 .033 .029 - - 6 6.35 .0735 .068 .054 .050 - - 7 8.00 .0473 .052 .046 .046 - - 8 10.1 .0744 .074 .566 - - 9 12.7 .125 .149 .182 .176 - - 10 16.0 .4582 .449 .253 .214 - - 11 20.2 .9130 .896/ .413 .429 - -
.432 12 25.4 .6100 .610/ .191 - -
.293
- Notin service
** Unreadable 12 Document No 120910 N/C
ENGDAHL ENTERPRISES Costa Mesa, CA 92626 MPL NUMBER: D51-R190 LOCATION: RCIC PUMP B ASE MAT - 574" - ACCELERATION (g) NOMINAL FREQUENCY North / South East / West Vertical NU BER (HERTZ) 1 31-86 2-2 86 13186 2286 13186 2 2-86 1 2.00 .021 .018 .026 .022 2 2.52 .039 .030 .031 .021 .013 (1) 3 3.17 *
.024 .017 4 4.00 .0367 .031 .028 .023 .029 5 5.04 .0305 .045 .037 .038 6 6.35 .0896 .065 .057 .048 7 8.00 .0750 .040 .068 .034 .019 .014 8 10.1 .097 .044 9 12.7 .130 .124 .142 .136 .053 .024 10 16.0 .409 .400 .162 .162 .082 .055 11 20.2 .810 .794 .237 .099 12 25.4 .556 .557 .156 .256 .256 (1) Mathematical error corrected. Originally reported acceleration 0.198.
- Unable to read due to corrosion
- Unreadable 13 Document No. 120910fvC
^
- - - - . . - .. . _ _ = .
l ENGDAHL ENTERPRISES Costo Mesa, CA 92626 MPL NUMBER: D51-R160 LOCATION: REACTOR BUILDING FOUNDATION - 574' DUAL RECORDS ACCELERATION (g) NOMINAL FREQUENCY North / South East / West Vertical N BER (HERTZ) 13186 2 2-86 1-31 86 2286 13186 2286 1 2.00 - - -
.006 - -
2 2.52 - - -
.009 - -
3 3.17 - - -
.010 - -
4 4.00 - - -
.026 - -
5 5.04 - - -
.054 - -
6 6.35 - - -
.035 -
7 8.00 - - - - - - 8 10.1 - - - - - - 9 12.7 - - - - - 10 16.0 - - - - - 11 20.2 - - - - - 12 25.4 - - - - - - 14 Document No 120910 N/C
APPENDICES 9 __
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'f MODEL PSR1200 V T
PEAK SHOCK RECORDER " l SENSES AND PERMANENTLY RECORDS THE SPECTRAL ACCELERATION AT SPECIFIED FREQUENCIE 'i PROVIDES SIGNALS FOR IMMEDIATE REMOTE INDICATION THAT ! j SPECIFIED PRESET SPECTRAL ACCELERATIONS HAVE BEEN EXCEEDED . ', l I i G EARTHQUAKES l i l S STORMS ( e EXPLOSIONS RELIABLE and ECONOMICAL i ENGDAHL ENTERPRISES I '
.850 Monterey Avenue .
Costa Mesa Cahfornia 926:6 (714) 54M398 I i
data and decide whether or not structural Introduct. ion damage had been sustained. i Traditionally, measurement of acceleration has To simplify the design of shock resistant implied measurement with the aid of a device structures, dynam,i cists frequently define shocks whose resonant frequency was far removed frr"n and earthquakes in terms of response shock the frequency range of interest. A typical spectra. Basically, a response shock spectrum is a accelerometer for aerospace applications might Pl ot of acceleration vs. frequency ,n i which each have a mass of 10 grams and a resonant p int upmsenu the peak acceleration expui- , frequency of 10 kHz or higher. Such devices enced by an accelerometer tuned to that specific were designed -primarily for attachment to a frequency. The range of frequencies covered by structural member to measure its response to the peak shock accelerometers corresponds to shock or vibration. Their low mass was necessary those found in most structures, systems, and c mp nents. S,m ce all structural elements to avoid modifying the characteristics of the device under test, while the resonant frequency p ssess s me I w inherent damping, the Peak had to be at least five times that of the highest Shock RecorderTM has been designed with 2% frequency of interest. At the other end of the f critical damping. The output obtained is thus spectrum, earthquakes and other low frequency ectly ap%caMe to stmetwal & sign and phenomena are conventionally detected and ""#'Y recorded using instruments whose resonant frequencies are much lower than the frequency A response spectrum may be derived from the range of interest. conventional acceleration vs. time record of a A structure such as a large office building, a suitable ' recording accelerometer, but this in. missile silo or an electrical generating station has volves either digitizing the records followed by many members and subassemblies with a wide computer manipulation of the data or the use of range of resonant frequencies, and many of a large amount of auxiliary equipment. The first these are lightly damped, i.e., a shock will cause method is time consuming, while the second is g them to " ring" for a relativelv long time. To expensive. The Model PSR1200.H/V is an inex-measure the effects of an earthquake or other pensive instrument requiring no source of shock on such a structure in the traditional way, power, and virtually no maintenance. It provides would require a very large number of trans- a permanent record of data from which the ducers and a complex data acquisition system response spectrum may be plotted by a very followed by computer analysis to digest the raw simple reduction process. nc rder Mu the msonant (nquency and Description g4ensitivity of each reed.
-V designates a recorder designed for vertical shock recording (compensated for earth's The Model PSR1200 H/V, Peak Shock Re- gravitational force). -H designates a recorder corderT M , is a completely passive device designed for horizontal shock recording.
covering the range of 2 25 Hz in 1/3 octave The Model PSR1200.H/V 4A/12A comprises the increments. Damping of each accelerometer is standard PSR1200-H/V plus the capability of nominally 2%. It is completely self contained. providing instanuneous warning signals when Twelve reeds of different lengths and weights, preset accelerations at selected frequencies have one for each frequency, are fabricated from been exceeded. This is achieved by adding dual spring steel. A diamond tipped stylus is attached contacts which are closed by the reed when it is to the free end of each reed to inscribe a deflected through a predetermined distance permanent record of its deflection on one of Model -4A monitors four selected reeds, while , twelve record plates. A calibration sheet for each -12A monitors all of the reeds.
been exceeded. The remote indication that four Uses o, twei,, oo,i ,eceie,,, ion i,mit, na,e o, na,e not been exceeded provides immediate informa-tion 9n which to act. ck RecorderTM can be used in The PSR1200, Peak Shock RecorderTM, is *""'"*'I useful whenever acceleration measurements are
- i desired at low frequencies. These accelerations may be due to earthquakes, storms, or
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- 3. Refineries explosions. The plot of the recorder's twelve 4. Bridges and dams individual measurements is the response spec- 5. High rise structures trum of the acceleration to which the recorder 6. Oil explorations was subjected. 7. Mines The response spectrum switch (-A) version of 8. Ships the PSR1200 is useful whenever remote indica- 9. Earth studies tions are desired that acceleration limits have 10. Towers Features Additiaa k' vias 35 P' avid'd 6*"a th*
covers and housmgs in the form of dowel pins. These pins prevent the cover from being put on upside down. They also prevent a cover from a horizontal recorder (-H) being put on a vertical Dzus, quarter turn fasteners, are used to secure the cover, making it easily removable. The cover rec rder (-V) or a -V on a -H. b clamped tight enough against the gasket Since a lower atmospheric pressure could be bonded to the watertight housing to provide created inside the recorder than outside during pr:tection of the u it to 50 PSI (3.6 kg/cm2) of shipment by air, a jackscrew is provided in the water pressure. cover to lift a corner of the cover and break the partial vacuum, it will also be of assistance when The record plates are serialized so only one set the unit has been closed for a long period of cf twelve have the same number. In addition, time as the neoprene gasket may adhere slightly Ce plates have two types of slots to allow to the cover. keying. The narrow key slot allows the plate to slide into only one slot in the housing to its full The recorder is reliable because of its simplicity, depth. That is, the plates all have to be in their it does not contain any of the more complex correct locations in the housing to attach the and less reliable components, i.e., batteries, cover. connectors, motors, and bearings. Its rugged structure is fabricated from aluminum alloy. The record plates can be inserted four different Only a few parts are used. The recorder is ways into the housing, allowing four records to self contained, and requires no start up time, be made before using a second set of plates. To prevent mixing the records, all plates must be The recorder is economical in that no external inserted for the record to appear at A,8, C, or D connections or power are required. The record or, again, th' coveri cannot be attached. A plates are reusable by replating after four viewing window is provided, and the appropriate records have been obtained. Maintenance is very letter A through D will show so the cover need low since the unit can be unattended for long , not be removed to know how the plates are periods of time. Data reduction is very simple, inserted. During shipping, a red dot is seen. This requiring only one measurement and one means that the plates have been removed and multiplication for each record plate to plot its the reed support structure is in place. point on the response spectrum.
The response spectrum switch (-A) ver- High impedance circuitry permits normal sion of the recorder has all of the features operation even if switch contact resistance of the PSR1200. exceeds several hundred thousand ohms. Ceramic encapsulated integrated circuits To retain the basic reliability of the offer maximum resistance to the eff ects of PSR1200, no batteries, motors, or bearings temperature and humidity, have been added. Electrical power is pro-vided from the Peak Shock Annunciator'. Finally, the heavy cast aluminum housing of the recorder offers protection against Every effort has been made to achieve the radiated interference or spurious mech-utmost reliability in the switching circuitry anical operation caused by striking the so as to match the reliability of the basic
CO'd'
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' contact sets an electronic latching switch The recorder can be used singly, biaxially,
. .which energizes the appropriate circuit in or triaxially. the annunciator and holds it energized
' until reset by the key switch.
5 l I 231/8 inches (58,7 cm) l - TRIAX1AL INSTALLATION OF THREE MODEL PSR 1200-H/V 12A l PEAK SHOCK RECORDERS
- ON TRIAX1AL MOUNT Switch Settings (-A version only)
The switch settings are permanently set levels can be selected for switch contacts to positions required by the customer's for each reed frequency, e.g., .47 g and application. The -4A allows four dual .70 g at 3.2 Hertz. The -12A has twelve settings, that is, the customer selects dual settings between 2 and 25 Hertt See four frequencies to be monitored be- the tabulation cf " Frequency and Switch tween 2 and 25 Hertz. Two acceleration Setting Umits" for selection available.
" Acceleration sensitivity" and record in the " Equivalent static acceleration" l Data Reduct. ion coiumn. pio, tne response speci,um gra ph.
Data reduction is done by measuring the Large displacement measurements can be maximu m distance of the scratched made with a six. inch (152 mm) scale with record from the zero line. Normally just graduations in hundreths (.01) of an inch t the maximum is recorded regardless of the (.25 mm). Small displacements can be ( direction. List th,s i distance under made using a microscope with a reticle ' r " Displacement on the calibration sheet. having graduations in thousandths (.001) Multiply the " Displacement" times the of an inch (.025 mm). I t I l REs*oNSE SPECTRUSA I cat.teR ATION SMEET AND TEST DAT A , , , __ , _ , _ _ , ,, ,_ ___ , __ , _ , ,_ , i -. -
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PEAK SHOCK RECORDER" MODELS P5R1200 H/V-4A and PSR1200 H/V-12A QUALIFIED fo: CutOf POS silsMIC QuAUPICAftone Of cLAsl 9 Elf CTRIC4L IQUtPMENT fot NUCLIAA POWit CINERAftNC sfAftoms - litt GutOf 344 Designed to meet the characteristics of the Response Spectrum Recorder and the Response Spectr described in the American Nuclear Society's Standard, ANSI /ANS-2.2 1978, Earthquake instrumentation C Nuclear Power Plants and the U.S. Nuclear Regulatory Commission's Regulatory Guide 1.12, Nuclear Pow instrumentation for Earthquakes, Revision 1. NOTE: Frequency range from 2.00 to 25.4, instead of 1.00 to 3 PHYSICAL SENSOR 5 Length 12 27/32 inches (32,6 cm) Width Number of 11-1/2 inches (29,2 cm) Sensing Elements 12 Thickness 10 inches (25.4 cm) Damping 2% (Q of 25) Weight 34 pounds (15,4 kg) Arrangement of i 36 pounds (-A) (16,3 kg) , Sensing Elements Coplanar Number of ENVIRONMENTAL Temperature Switch Contacts
-40'C to +85+C -4A 4 Dual Contacts Altitude To 50,000 feet (15.240 meters)
Humidity -12A 12 Dual Contacts lo 100% RH s RFI No adverse radiated or conducted RFl ACCURACY Water Tight To 50 PSI (3,6 kg/cm8 ) Frequency 1% To 10 PSI (-A) (,7 kg/cm2 ) Acceleration Nuclear Radiation No effect on performance 13% at Is Dynamic Range See Table of permanent recorder. Switch Settings 13% at 1g Switch electronics are not radiation hardened, unless requested at extra cost. MOUNTING 4 through holes for 1/2 inch bolts FREQUENCY, RANGE, and SWITCH SETTING LIMITS OF SENSING ELEMENTS N ac- o, ae n. ai r.n sem a.ae. s a s a=, t-i" N 6. se.g ao Aa*e.e a se in w is - M. .
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+, MODEL PAR 400 PEAK ACCELERATION RECORDERW SENt ES AND PERMANENTLY RECORDS PEAK ACCELER ATIONS l
e EARTHQUAKES I 1 l e STORMS S EXPLOSIONS l RELIABLE and ECONOMICAL M ENGDAHL ENTERPRISES 2850 Monterey Avenue Coua Meu Cabfomia 92626 (714, 5 4oa> N = v 1 n )
l Introduction Seismic events are random events, and may occur in had been pushed to their design limits, an entirely new remote and inaccessible locations or in built up areas. Instrument was required. Scientists and engineers frequently need to know the acceleration levels associated with these events, and for This requirement has been met with the Model PAR 400, this reason, have developed instruments requiring no Peak Acceleration l'ecorderTM. It is an inexpensive , souece of power, which can provide permanent records trianial unit which rer,pires no power supply, and is of peak acceleration. virtually maintenance free. Feak accelerations as low as
.013 can be recorded, and the minimum bandwidth instruments of this type have been used for many years, entends from 0 to 26 Hertz. Permanent records are but with the advent of the nuclear power plant, higher scribed by diamond stylii on replaceable metal plates.
i sensitivity and increased bandwidth are required to The peak acceleration is computed by multiplying the l measure the accelerations induced in piping and other maximum excursion of the trace by the acceleration I equipment. Since the older types of peak accelerometers sensitivity of the recorder. Description I The Model PAR 400, Peak Acceleration RecordertM, Sensors are available in three natural frequencies: 32, $1 senses and records peak accelerations triaxially. It is a and 64 Hertz. The assemblies are mechanically identicat self-contained passive device requiring no external power and completely interchangeable, so any combination or control connections and has a minimum band width may be included in a trianial recorder, of 0 to 26 Hertz with a sensitivity as low as .013 The record is scratched permanently on a meul plate ]
! Each sensor of the PAR 400 incorporates a new method which .is both serialized and keyed to the recorder to i of mechanical ampiification which makes it more than assure that the records are not confused among the three five times as sensitive as previous devices. With the aid of axes. Since the record is scratched,it can be measured ; optical magnification,its permanent record can be read without further processing. The record plates are in- )
to .001 of an inch (.025 mm) or less. With a full scale setted through side holes in the casting without takieg deflection of ,200 inches (5 mm), the -1 version (2 g off the cover. This minimites the possib>Iity of damas'ns full scale) has a dynamic range of 200:1 (46 db). the recorder or inadvertently recording on the reco*d Air dampir 3 si used since it is very efficient for its site [hani and weight. Minor adjustments of dampir$g can be made i in the field,if required. l l Applications The PAR 400 is useful whenever low frequency peak 3. Refineries acceleration measurements are needed. These accelera- 4. gridges and dams tions may be due to earthquake, storms, or exp'osions. The three records give the acceleration levels along three 5. High rise structures 3 mutually perpendicular axes. 6. Mines The Peak Acceleration RecorderTM can be used in 7. Ships connection with: 4. Off shore oil rigs
- 1. Nuclear power plants 9. Transportation shock
- 2. Steel mills 1
Features
! The PAR 400 is a very sensitive, wide band, low motion. A diar,ond tip scriber at the end of ta.
frequency acceleration recording instrument. The high amplifier arm traces a very fine visible permanent reco 3 g
, sensitivity is obtained by using a heavy mass to detect of the arm's excursions. The scribe line widths are oa t*e the acceleration, and then mechanically amplifying its order of .0004 inches (.01 mm).
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i l l l 4 Three plates, stamped L, T, and V, respectively, are used shifting between insertion and removal. If there is a 13 record the excursions in the three axes. Slotted shift, the user is made aware that a problem exists. keyways on the plates match up with pins in the housing so that only the correctly stamped plate can be inserted full depth into the corresponding sensor. Each set of To obtain wide band response, the instrument is three plates also carries a unique serial number. This damped to 60% of critical. A preadjusted air damper is permanent identification system eliminates the possibil- used for damping to keep the size and weight of the ity of confusing the records. total package as small as possible. The rugged cast aluminum housing has three pads to The recorder is reliabte because of its simplicity. it does contact the mating surface when mounted. A single not contain any of the more complex and less reliable screw is used for attachment. Shims can be slid under components, i.e., batteries, connectors, motors, and the appropriate pad to level the unit. The screw is then bearings. The recorder is self. contained, and reavires no tightened. A clearance hole is provided in the cover for
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startsp time. the screw head 5o the cover need not be removed during mounting of the recorder, The recorder is economical in that no external connec-tions or power are required. The record plates are To install the record plates, three plugs are removed reusable by replating Maintenance is very low since the from the side walls of the casting and the plates are unit can be unattended for long periods of time. slipped into the appropriate holde 5. The plugs are of such a size as to preclude damage to the mechanism Materials have been selected for long life even when during insertion or removal of the record plates. Since exposed to nuclear radiation. The cast housing, along the cover does not have to be removed to replace record with the cover and three plugs, is chemically filmed plates, the mechanism is not exposed to inadvertent (alodine) and painted with epoxy paint. The gaskets damage. are made of EPDM to increase resistance to radiation. When a record plate is inserted, a spring-loaded pin All hardware is stainless steel. An indicating tilica gel desiccant is also provided to decrease the humidity inside forces the plate to one side of the track to eliminate anY the recorder. 6 side play which would introduce an error in the recorded acceleration. The insertion produces a zero line on the plate. On removal, a zero line is also scratched These Data reduction is very simple requiring only one measurement and one multiplication for each of the zero lines should coincide if there is no mechanical three record plates to obtain its maximum accele'ation Data Reduction Data reduction is accomplished by measMng the maxi-mum displacement of the scratched recoru . rom the zero Small displacement measurements can be made using line. Normally just the maximum is recorded regardless a microscope with a reticle having graduations in cf the direction. List this distance under " Displacement" thousandths 1001) of an inch. A magnifier with a rects-cle g,aduated in tenths (.1) of a mm can be used for en the calibration sheet. medium displacements. Consult Engdahl Enterprises Multiply the " Displacement" times the " Acceleration ###E" Sensitivity" and record in the " Acceleration" colen. SAWLE OF A MAGNIFIED RECORD CALIBR ATION AND TEST DATA SHEET USING A RETICLE 4 u. ., . . .. D ,.. N..... S.e.. ,v .., s.. ., F,., m.,m tv,om no ..o 4......o., iv..i ,; ic L 32.3 14.0 023 '32 (.551) ( 58) T 30.9 13.5 010 'g 9 _ V (.532) (.26) 33.3 14.2 .005 (.559) (.13) Call 8 RATION DATA REDUCTION
PEAK ACCELERATION RECORDER" MODEL PAR 400 QU ALIFIED To IEEE RECOMMENDEo PR ACTICEs Fo A sElsMIC QUAllFICATioN oF class IE EQUIPMENT FoR NUCLEAR POWE R GENERATING STATIONS,sTD. 3441975 1 Designed to meet the characteristics of the Peak Accelerograph described in the American National Standard AN51/ANS 2.2-1978, Earthquake Instrumentation Criteria for Nuclear Power Plants and the U.S. Nuclear Regulatory Commission's Regulatory Guide 1.12, Nuclear Power Plant instrumentation for Earthquakes, Revision 1. SENSORS MOUNTING Number of Sensing Elements 3 One (1) e10-24 Screw. Arrangement of Elements Triaxial Level Recorder to 11* (1/16 inch in 3% Full Scale Acceleration -1 23 inches) ( 1.6 mm in 90 mm ) by adding
-2 5g shims under the appropriate mounting pad. :
-3 10 g "V" will measure the vertical accelerations.
Dynamic Range -1 200:1 (46 db) Align long side of recorder within 3' (%
-2 385:1 (52 db) inch in 51/8 inches) (6.4 mm in 130 mm)
-3 500:1 (54 db) . of designated North / South line. "L" Natural Frequency (15%) -1 32 Hz (longitudinal) will measure N/S accelera-
-2 51 Hz tions. "T" (transverse) will measure E/W.
-3 64 Hz Damping 55 to 70% of Criticall ENVIRONMENTAL Bandwidth -1 0 to 26 Hz Temperature -40*C to + 85'C
-2 0 to 41 Hz Humidity To 100% RH
-3 0 to 52 Hz RFI Does not radiate or conduct Overall within 15% at full scale, RFl. Not affected by Accuracy changing linearly to i 1.5% of external RFl.
full scale at 0.01 g Water Water Ti(ht to 70 PSI Detail -1 .01 to .50 g 1.01 g (5 kg/ cme) Acceleration .50 to 1% g 12% g Accuracy 1% to 2 313% Nuclear Radiation
-2 .013 to .65 g1.013 g The following materials are used in the
.65 to 2 g12% construction of the PAR 400.
2 to 5 g13% 1. Metals: Aluminum, Brass, Stainless
-3 .02 to 1 g1.02 g Steel, Beryllium Copper, Gold, Nickel 1 to 3 g 2 2% 2. Non Metallic Materials 3 to 10 g13%
Spurious Resonances: None within frequency siren A,,,e. si i,,n,,2 range of interest Dewription Material Level (R AD) Cross Axis Sensitivity: Less than .03 g/g Paint Epony L.. i ics Adheseve Epony Lo* 1 a 108 Adhesive Anae rotH C Low 2 a108
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PHYSICAL DIMENSlONS c ,",',$ ' h 'o) "' U ", ' ", fo! Length Pisaa Graphite to- 2 = 108 51/4 inches (13.34 cm) Width 3 5/8 inches (9.21 cm) N,','[," [',",, , [ j",$ Height 311/32 inches (8.49 cm) Weight 2 3/4 pounds (1.3 kg) POWER REQUIREMENTS - None 2 source: Dow Corning Corporation. Loctite corporat.on. Corning Glees Work. E.8. Du Pont De Nemours & Com-1Demping ediusted at nominal semoecheric preemare pony. Parker seel Company, Roychem Corpor ation, espected et time of operation. General Electric REPRESENTED eY: l 1 4 s.1 M 4007005
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N . u MODEL PSA1575 m i PEAK SHOCK ANNUNCIATOR !
; l INDICATES THAT SPECIFIED PRESET SPECTRAL ACCELERATIONS HAVE BEEN EXCEEDED PROVIDES CONTACT CLOSURES FOR REMOTE INDICATORS OR ALARMS i
l e EARTHQUAKES i ) ! l 8 STORMS ' e EXPLOSIONS l
. RELIABLE and ECONOMICAL fA V
9 O v ENGDAHL ENTERPRISES 2850 Monterey Avenue . Costa Mesa, Cahfornia 92626 . (714) 540 0396 V . .
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Description The Models PSA875' and PSA1575, Peak Shock three mutually perpendicular axes. Amber lights Annunciators', give visual warning that pre- indicate accelerations approaching design limits determined acceleration limits, making up a re- (normally 70%) while red lights indicate that sponse spectrum, have been exceeded at certain design limits have been exceeded. Model PSA875 frequencies. They are designed to operate in monitors four frequencies per axis while Model conjunction with tuned Peak Shock Recorders', 1575 monitors twelve. Both models may be PSR1200 H/V-4A/12A. Both models have three equipped with relays to operate remote indicators banks of indicator lamps, one bank for each of or alarms. (See " Options and Accessories".) Applications The annunciators may be used whenever it is The Peak Shock Annunciator' can be used in desired to indicate instantaneously the reaction connection with: of a structure to a complex shock such as an earth- 1. Nuclear power plants quake or an explosion. The information provided 2. Steel mills permits an immediate decision as to whether or 3. Refineries not the operation can continue or must be shut 4. Bridges and dams down. 5. High rise structures
- 6. Mines
- 7. Ships
- 8. Off shore oil rigs
- 9. Transportation shock Features The "AC Power" indicator lamp is fed from the all relays (if provided) should be energized This DC power on the printed circuit boards and permits an immediate check that the annunciator shows that the incoming power line and the is functioning correctly. When the key is returned regulated DC supply are both operating normally, to the " reset" position and removed from the switch, all indicators will be de energized the A key-operated test / reset switch is provided. It latches will be reset, and the annunciator is read y controls two functions. In the " test" position, all to receive signals from the Response Spectrum of the indicator lamps should be illuminated and Recorder". Once a signal has been received. the
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appropriate lamp and relay,if any,will remain ener- Uninterruptible power supplies incorporating gized until the annunciator is reset with the key. batteries for emergency operation can also be provided. If power failure is anticipated, battery Whsre relays are provided for remote indidators operation is strongly recommended since power or chrms, separate electronic driving circuitry is failure will reset any annunciated signal at the provided. Dual redundancy is thereby achieved time of failure. Two additional indicators are for edditional reliability, mounted on the panel. One monitors the AC power at the transformer of the battery charger. The second monitors the charging circuit.
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8 MODEL PSA875 PEAK SHOCK ANNUNCIATOR' t l TRIAXIAL. INSTALLATION OF THREE MODEL PSR 1200 H/W4A, PEAK SHOCK RECORDERS' ON TRIAXlAL MOUNT , l O < l I
TM PEAK SHOCK ANNUNCIATOR Models PSA875 and PSA1575 QUALIFED To: GUIDE FoR sElsMIC QUALIFICATION oF CL Ass i ELECTRICAL EQUIPMENT FoR NUCLEAR POWER GENERATING stations -IEEE GUIDE s44 Designed to meet the characteristics of the Control Room Indicator for Response Spectrum Switch described in the American Nuclear Society's Standard ANSl/ANS 2,21978, Earthquake Instrumentation Criteria for Nuclear Power Plants and the U.S. Nuclear Regulatory Commission's Regulatory Guide 1.12, Nuclear Power Plant Instrumentation for Earthquakes, Revision 1. PHYSICAL ENVIRONMENTAL PSA875 PSA1575 Length 19 inches 19 inches Temperature O to +70T (48,3 cm) (48,3 cm) Humidity To 100% RH Width 20% inches 20% inches RFI No adverse radiated (52,4 cm) (52,4 cm) or conducted RFI Thickness 10% inches 17% inches (26,0 cm) (43,8 cm) POWER REQUIREMENTS Weight 33 pounds 45 pounds (15 kg) (20,5 kg) Voltage 115 VAC Current 2% amperes INDICATORS maximum Number of 3 3 Axes Monitored Number of 12 36 Frequencies MOUNTING Bench or Monitored Standard 19" (48,3 cm) Relay Rack
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Number of 24 72 8%" (22,2 cm) high or Indicators 15%" (40,0 cm) high 27 lbs. (12,3 kg) ! Options and Accessories (avaiiabie ai entra cost)
- 1. Relay closures for remote indication and alarm. 2. Uninterruptible power supplies incorporating One relay with Form C contacts can be provided batteries for emergency operation can be fur-for each output indicator. A connector on the back nished within the confines of the annunciator.
of the chassis facilitates system implementation. If power failure is anticipated, battery operation is The connector is wired for normally open or strongly recommended since power failure will normally closed operation. reset any annunciated signals at the time of the failure. To date, most customers have selected a two-relay system. One relay indicates that the lower level (amber) has been exceeded. The second relay Indicates the upper level (red) has been exceeded at least once. Relays are rated at: 1/10 Hp,3 amps 4120 VAC or 3 amps 6 28 VDC resistive. REPRESENTED SY: i..s. m .rst e .
ATTACHMENT 4 J e}}