ML20063E235

Seismic Qualification Rept 3394-1 Anticipatory Reactor Trip Sys

ML20063E235
Person / Time
Site:	Davis Besse
Issue date:	03/01/1982
From:	Lepkowski L, Loczi V, Masciantonio A AUTOMATION INDUSTRIES, INC.
To:
Shared Package
ML20063E227	List: ML20063E221 ML20063E235 ML20063E258 ML20063E273 ML20063E291
References
3394-1, NUDOCS 8207130355
Download: ML20063E235 (16)

Text

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AT*ThC HMG'N ' TO G I L4f92 SEISMIC QUALIFICATION REPORT NO. 3394-1 ANTICIPATORY REACTOR TRIP SYSTDi Davis-Besse Nuclear Power Station Unit 1 March 1, 1982 Prepared for Toledo Edison Company under Purchase Order No. Q 50754 Prepared by: Approved by:

Q S. W~w A. S. Masciantonio Engineer 0%

V. Loc:1 Section Leader

. s' L. R. Lepkowsi Group Supervisor g AUTOMATION INDUSTRIES,INC.

VITRO LABORATORIES OlVISION

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. AUTOMATION INDUSTRIES,INC.

VITRO LABORATORIES DIVISION ABSTRACT This report describes the tests conducted for seismic qualification of the Davis-Besse Nuclear Power Station, Unit 1, Anticipatory Reactor Trip System.

A fully operational, deliverable enclosure was subjected to biaxial, random multifrequency seismic tests in both the front-to-back/ vertical and side-to-side / vertical directions. The results show that the enclosure and devices met all the required acceptance criteria and suffered no damage as a result of exposure to the re-quired seismic levels.

All fasteners were tightened prior to test. A pre-test in-spection revealed a hairline crack on a weld on the upper right card file enclosure. Evidence of rust indicated that the crack was not a recent occurrence. The seismic tests were conducted and the crack was inspected after both series of OBE and SSE tests. The crack was unaffected by the seismic tests.

A post-test inspection revealed a second weld with a hairline crack inside the card file enclosure. This crack also had evidence of rust on it and was obviously not caused by the seismic test.

Both weld locations were repaired prior to delivery of the enclosure.

O AUTOMATION INDUSTRIES,INC.

VITRO LABORATORIES DIVISION CERTIFICATE OF COMPLIANCE .

FOR SEISMIC QUALIFICATION OF THE ANTICIPATORY REACTOR TRIP SYSTEM It is hereby certified that the Anticipatory Reactor Trip System (ARTS) for the Davis-Besse Nuclear Power Station Unit No. 1 can withstand, without loss of safety function, the seismic occurrences which cause a floor response as depicted in Attachements 9 through 14 to Specification No. 7749-E-241Q. This certification is based on the information contained in Seismic Qualification Report No. 3394-1 and is the result of complete and carefully conducted tests and analysis that are to the best of our knowledge true and correct in all respects and is in compliance with the above referenced specification.

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/ (Date) ' M William L. Freienmuth (Date)

['JamesG.Dougherty,Jr.

Quala.ty Assurance Manager -

Vice President I. Engineering Services i

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3/M/h5 i Dr. Donald Seaton, PE4471ME (Date) l Professional Engineer I

O I AUTOMATION INDUSTrilES,1NC.

VITRO LABORATORIES DIVISION TABLE OF CONTENTS Section P,aage, I INTRODUCTION AND

SUMMARY

. . .... . . .. . . 1 II SEISMIC TEST PROGRAM. . . .... . . ... . .

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1. Seismic Test Facility. . . . . . . . . . . .

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2. Seismic Test Equipment. .. .... .. . ..

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3. Equipment Tested. . . . . . ... . . . . ..

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4. Test Setup. . . .. .. ... .. . . . .. 3

5. Test Description. . . . ..... .. . . ..

3

6. Test Monitoring. . . ... . .... .. . . .

3

7. Test Acceptance Criteria. .... . .. . .

4 III SEISMIC TEST RESULTS. . .... . . . . .. . .

6

1. Weight and Center of Gravity Location. . . ..

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2. Resonance Search Test Results. . . .. . ..

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3. Random Mult1 frequency Test Results. . . . ..

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4. Electrical Test Results. . ... . . . . ..

9 IV CONCLUSIONS. . . . . . . . . ... . . . .. . . 10 I 111 l

e e AUTOMATION INDUSTRIES,INC.

VITRO LABORATORIES DIVISION LIST OF FIGURES Figure No. Title Page

1. Anticipatory Reactor Trip System Seismic Test Setup. . . . . . . . . . . . . . . . . . . . 7 LIST OF TABLES Table No.

1 Resonant Frequencies, Amplification Factors, and Damping Coefficients. . . . . . . . . . . . . 8 LIST OF APPENDICES Appendix A. Anticipatory Reactor Trip System Seismic Qualification Test Plan No. 3394.01, Rev. B, dated January 27, 1982.

B. Wyle Laboratories Seismic Simulation Test Report No. 45183-1, dated February 11, 1982.

C. Anticipatory Reactor Trip System Seismic Electrical Test Procedure TP 3394-1032 l

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II AUTOMATION IMDUSTRIES,1NC. I VnTH) LABORATORIES DIVISION l

Section I l

INTRODUCTION AND

SUMMARY

This report provides details of the seismic tests conducted on the Anticipatory Reactor Trip System (ARTS) for the Davis-Besse Nuclear Power Station Unit No. 1. s The ARIS is described by Automation Industries,Inc., Drawing No. 3394-1001. The system safety function is to provide for an auto-matic and safe shutdown of the reactor. The equipment monitors appro-priate input signals and generates trips when plant conditions deviate beyond set limits.

Seismic qualification was accomplished by test. A completely assem-bled, operating, deliverable enclosure was seismically tested in accord-ance with the requirements of LEEE Standard 344-1975 as detailed in the Anticipatory Reactor Trip System, Seismic Qualification Test Plan No.

3394.01.

Section II of this report describes the test facility, equipment, set-up, monitoring, and acceptance criteria.

Section III gives the results of the seismic test program.'

Section IV presents the conclusions and establishes seismic qualification.

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9 AUTOMATION INDUSTRIES,1NC.

VITRO LABORATORIES DIVISION Section II SEISMIC TEST PROGRAM This section describes the test facility, the test equipment, the equipment tested, the test setup, the test description, the test monitoring, and the test acceptance criteria. The ARTS was subjected to seismic test on January 18, 1982.

1. Seisnic Test Facility The seismic tests were conducted at Wyle Laboratories, Scientific Services and Systems Group, 7800 Governors Drive, Post Office Box 1008, Huntsville, Alabama 35807.

2. Seismic Test Equipment The seismic test machine "D" is a hydraulic, servo-controlled, biaxial seismic simulator with an 8 X 8 foot table capable of generating random-motion, multiple-frequency tests, with a maximum displacement of 8 inches double amplitude, a maximum velocity of 35 inches per second, and a max-1 imum acceleration of 4.5 g at 3,000 pounds. The test machine is capable of exciting the equipment under test to horizontal and vertical input accelerations that are phase incoherent.

3. Equipment Tested The ARTS is contained in a wall mounted, Hoffmann Engineering Company cabinet enclosure approximately 48 inches high, 36 inches wide and 12 inches f

l deep. A completely assembled, operating, deliverable enclosure was seis-mically tested.

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e AUTOMATION INDUSTRIES,INC.

VITRO LABORATORIES DIVISION

4. Test Setup The ARTS cabinet was mounted on a vertical wall fixture identi-cally to the actual in-plant installation as shown in figure 1. The four 1/ 2- 13 UNC, SAE Grade 5 mounting screws were torqued to 80 I 8 ft-lbs. The fixture was welded to the seismic test table. The -

horizontal and vertical control accelerometers were attached to the vertical wall fixture in order to eliminate any resonances due to the i

test fixture. ,

5. Test Description The resonance search tests of the ARTS enclosure were independently b

performed in each of the three perpendicular directions, using a sinusoidal steady-state input of approximately 0.2 g from 0.5 Hz to 50 Hz, at a rate of approximately one octave per minute.

The Operating Basis Earthquake (OBE) and Safe Shutdown Earthquake (SSE) proof tests consisted of biaxial, random-motion, multifrequency, phase-incoherent, simultaneous horizontal and vertical inputs from 1.0 Hz 3

to 40 Hz for 30 -+0seconds each. The resonance search and proof tests were performed in accordance with Appendix A, Anticipatory Reactor Trip System Seismic Qualification Test Plan, No. 3394.01.

6. Test Monitoring Acceleration levels at the devices were monitored during the resonance search and proof tests. Transmissibility plots from 1.0 Hz to 50 Hz were obtained from the resonance search tests. In addition to the accelerometers, six channels of oscillograph recordings of the operating devices were obtained before, during and after the proof

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e I AUTOMATION INDUSTRIES,1NC.

VITRO LABORATOFilES DIVISION tests to provide evidence of proper device operation. The six channels were used to monitor the following:

Recorder Channel, Device Function 1 Relay Contacr.

2 Relay Contact 3 Transistor 4 Transistor 5 Transistor 6 Relay Contact

7. Test Acceptance Criteria The criteria for seismic qualification test acceptance of the ARTS enclosure were:

a. The cabinet mounting method complied with figure 1.

b. There was no structural failure, broken or loosened parts, deformation, or deflection which could cause interference with the safety related function of Class 1E devices and t circuits.

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c. Sufficient instrumentation capable of monitoring all variables of interest were provided to record equipment per-formance during seismic tests.

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d. The Test Response Spectra of the control accelerometers envel-oped the Required Response Spectra for each valid proof test.

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7 O AUTOMATION INDUSTRIES,1NC.

VITRO LABORATORIES DIVISION The criteria for acceptance of the ARTS devices were:

a. There was no loss of output signals, short or open circuits.

b. There was no closing of an open, or opening of a closed output relay contact greater than 2.0 milliseconds,

c. There was no malfunction or failure that could inhibit the class lE functions.

d. There was no loss of required performance characteristics or ability to change state or position.

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VITRO LABORATORIES DIVISION Section III SEISMIC TEST RESULTS This section presents the results of the seismic test program, including the assembled cabinet weight and center of gravity location.

1. IJeight and Center of Gravity Location The assembled cabinet weight is 280 lbs. The center of gravity is located 22 3/4 inches from the bottom, 5 1/2 inches from the back and on the cabinet centerline is the side-to-side direction, as depicted in figure 1.

2. Resonance Search Test Results The ARTS resonant frequencies, amplification factors, and damping coefficients were determined from the transmissibility plots provided in Appendix B, pages 19 through 28. Table 1 contains a listing of resonant frequencies, amplification factors, and damping coefficients.

The damping coefficients were determined, using the bandwidth method as follows:

F damping coefficient , 2 1 2F n

where: F and F 2 are frequencies at which Q=Oo NT Q = Resonant Amplification Factor (Resonance is defined as a transmissibility in excess of 2.0)

F = Resonant Frequency O AUTOMATION INDUSTRIES,1NC.

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I VITRO LABORATORIES DIVISION

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-13UNC, SAE Grade 5 Mounting Bolts 80+6 ft-lbs 4 places JL i

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Accelerometer 1.ocations , ,

No. Direction Denrice 1 Vertical Maximum Cabinet Response, All Devices  !

2 Horizontal Power Supply 3 Horizontal Digital Isolator 4 Horizontal Control Panel / Card File  !

5 Horizontal Relay and Terminal Block *

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O AUTOMATION INDUSTRIES,1NC.

VITRO LABORATORIES DIVISION TABLE I ARTS RESONANT FREQUENCIES, AlIPLIFICATION FACTORS AND DAMPING COEFFICIENTS ACCELEROMETER AMPLIFICATION RESONANT DAMPING TEST NUMBER AND FACTOR FREQUENCY COEFFICIENT NO. DIRECTION Q9 (Hz) (%)

1 2 FB - - -

1 3 FB -- -- -

1 4 FB 15 46 3.8 1 5 FB - - --

2 1V - -- -

12 2 SS - - -

12 3 SS - - -

12 4 SS - - --

12 5 SS - - --

l l Legend FB = Front to Back SS = Side to Side V = Vertical

II AUTOMATION INDUSTRIES,1NC. l VRTK) LAEMORATORIES DIVISION j

3. Random Multifrequency Test'Results A. Cabinet The seismic tests that were conducted demonstrated that the ARTS can withstand the required seismic environment without loss of safety function or compromise to the structural integrity of the cabinet. The Test Response Spectra of the control accelerometers enveloped the Required Response Spectra for each valid proof test. A post-test visual inspection revealed no damage resulting from the seismic test.

. B. Devices The ARTS was able to perform its Class lE functions without compromise. There were no loss of output signal, short or open circuits, no relay chatter, no Class 1E device structural failures, broken or loosened parts, nor deflections which caused interference with the safety-related functions, and there was no loss of required function nor loss of ability to change state or position.

4. Electrical Test Results Results of the electrical tests performed on the ARTS were completely satisfactory. The equipment function was exercised and moni-tored as detailed in Seismic Test Procedure TP 3394-1032. All devices operated as designed before, during, and after the simulated seismic event.

The electrical test and test results are presented in Appendix C.

The oscillograph recording of the functions monitored during the electrical test is maintained on file and is available for inspection at Automation Industries, Inc., Vitro Laboratories Division.

s O AUTOMATION INDUSTRIES,lNC.

VITRO LABORATORIES DIVISION Section IV CONCLUSIONS The results of this test prcgram provide conclusive evidence that the Anticipat'ory Reactor Trip System for Davis-Besse Nuclear Power Station Unit 1 is seismically qualified. It can meet, without compromise to structure or electrical function, the seismic require-ments detailed in Specification No. 7749-E-241Q Revision OF. The test program was conducted in accordance with the requirements of IEEE Std. 344-1975 and Seismic Test Plan No. 3394.01.

The acceptance criteria stated in the Seismic Qualification Test Plan, No. 3394.01 have been realized for the cabinet enclosure and the devices tested.

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, AUTOMATION INDUSTRIES,1NC.

VITRO LABORATORIES DIVISION 1

APPENDIX A ANTICIPATORY REACTOR TRIP SYSTEM SEISMIC QUALIFICATION TEST PLAN NO. 3394.01 REVISION B, JANUARY 27, 1982 l

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