ML20112D725

Intervenor Exhibit I-SC-LP-57,consisting of Attachment 11 Re & Description of Data Base on Operating Experience of Unqualified Components During Major Seismic Events Supporting Components of Temporary Power Supply

ML20112D725
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	08/03/1984
From:	Campbell R STRUCTURAL MECHANICS ASSOCIATES
To:	Chau H LONG ISLAND LIGHTING CO.
References
I-SC-LP-057, OL-4, NUDOCS 8501140447
Download: ML20112D725 (36)

Text

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e ATTACID!ENT 11 I

i g g STRUCTURAL R1ECHAnlCS

"""""""""" A S S O C I A T E S SMA 14304 01 w -s . e . .. . c . . .

5160 Becn Street. Newport Beacn. Ca:if 92660 (7143833 7552 April 20, 1984 -

Mr. Hancock Chau Long Island Lighting Comoany Shoreham Nuclear Power Station Nuclear Engineering Department PO Box 618 North County Road Wading River, New York 11792

Dear Hank:

Enclosed is a brief description of a data base on operating experience

• of unqualified components during major seismic events. The enclosed information has been presented to the '<RC and contains a substantial data base to su ; ort successful operation of nany com onents of your temporary power supoly at Snoreham. I hope this will be of value in your upcoming hearings for a low pcaer ocerating license.

Very truly yours, ,

STRUCTURAL MECHANICS ASSOCIATES, INC.

. _ es' ~f'

/df Ljs L-f) i' Robert D. Campbell Project Manager 0DC:kk cc: R. Paccione (LILCO)

M. Frank (NUS)

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EARTHQUAKE EXPERIENCE FOR NON-SEISMICALLY QUALIFIED EQUIPMENT A Seismic Qualification Utility Group (SQUG) has funded a program to document historical performance of equipment not specifically cesigned for earthquakes. A two volume report (Ref. 1) has been issued document-ing performance of electrical ~and mechanical equipment in several fossile a plants and one high voltage DC-AC convertor station affected by several major earthquake events. The components specifically studied were:

Motor Control Centers Low-Voltage (480 v Switchgear)

Metal-Clad (2.4 to 4 kV Switchgear)

Unit Substation Transformers Motor Operated Valves Air Operated Valves .

Horizontal Pumps-Vertical Pumps ,

Reference 2 is a compilation of fragility data developed during the Seismic Safety Margin Research Program sponsored by the USNRC. The more pertinent data for purposes of demonstrating operating performance during an actual seismic event are in Reference 1.

The data in Reference I have been reviewed by an NRC sponsored Senior Seisnic Review and Advisory Committee (SSRAP). A viewgraph presentation that the committee made in December, 1983 to the NRC is enclosed. From the encicsure, it can be seen that all the equipment types studied anich are mounted in structures at less than 40 feet above grade can withstand responses resulting from a 0.29 peak ground acceleration. Furthe rmo re ,

except for motor operated valves with large eccentric o;erator lengtns to pipe diameter ratios, a 0.3g peak ground acceleratien can be withstocd.

Caveats to these general conclusions are that the equipment must te anchored and that there is no sup;crting evidence that internittant malfunction 6

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(chatter or trip) during the seismic event will not occur. These inter-mittant malfunctions do not preclude successful operations after a seismic event, however. The enclosure provides greater detail on the SSRAP con-clusions and recommendations to the NRC. -

The issue at hand is whether the four 2.5 MW temporary diesel generators and their electrical distribution system installed at Shoreham can survive and operate after a 0.29 Design Basis Earthquake (DBE). The essential components are the diesel engine / generator unit, the 4.1 kv local 'switchgear station at the deisel generator units and the 4.1 kv switchgear in the main switchgear room.

The data base of Reference 1 and the enclosed SSRAP review would strongly support the survivability of the 4.1 kV switchgear at both the diesel generator units and the main switchgear room at earthquake levels exceeding the 0.29 DBE. These switchgear were examined during a site visit en Acril .18, 1984 and found to be adequately ancnored for the data base to be applicable.

The diesel generator units were examined and all components were found to be very substantially anchored and stiff. The inherent ruggedness of the diesel units is present due sto the fact that the portable' units must with-stand shipping loads which greatly exceed the DBE as well as withstand the start-up a.nd steady state operation vibrations of the engine. The seismic capacity of the diesel units as well as the local switchgear station is governed by friction between the skids and the railroad tids (wooden blocks in the case of the local switchgear station). Stone and Webster has evaluated the capability of the units to withstand the DBE.

Based upon the evidence present, we feel very strongly that there is virtually no chance of failure during a seismic event of the diesel generator units or the 4.1 kv switchgear.

9

s REFERENCES

1. Yaney, P.I. and S. Swan, Program for the Development of an Alternative Approach to Seismic Equipment Qualification, Volume I and II, EQE Inc., 1983.

2. Cover, L.E., M.P. Bohn, R.'D. Campbell and D.A. Wesley, Handbook of Nuclear Power Plant Seismic Fragilities, NUREG/CR-3558, UCRL-53455, Dec. 1983 e

e 5

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USE OF PAST EARTil00AKE EXPERIENCE DATA TO Sil0W SEISMIC RUGGEDNESS OF CERTAIN CLASSES OF EQUIPMENT IN NUCLEAR POWER PLANTS SENIOR SEISMIC REVIEW & ADVISORY PANEL (SSRAP)

PAUL IBANEZ -

ROBERT P. KENNEDY ANSilELL J. SillFF WALTER VON REISMANN LORING A. WYLLIE, JR.

DECEMBER 15, 1983 9

• BACKGROUND t

SSRAP WAS RETAINED TO MAKE AN INDEPENDENT ASSESSMENT OF WilETilER CERTAIN CLASSES OF EQUIPMENT IN OPERATING NUCLEAR POWER PLANTS IIAVE DEMONSTRATED SUFFICIENT SEISMIC RUGGEDNESS IN PAST EARTil0VAKES SO AS 10 RENDER AN EXPLICIT SEISMIC QUALIFICATION UNNECESS/RY. _.

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APPROACil e ASSESSMENT WAS PRIMARILY BASED UPON PAST EARTil0VAKE PERFORMANCE DATA FOR THESE CLASSES OF EQUIPMENT PROVIDED TO Tile SSRAP BY Tile SEISMIC QUALIFICATION UTILITY GROUP (SQUG) THROUGli ITS CONSULTANT, E0E INCORPORATED.

e DATA PRIMARILY FROM:

se M 6.5 1971 SAN FERNANDO es M 6.6 1979 IMPERIAL VALLEY ee M 6.5 1983 C0ALINGA e LIMITED REVIEWS:

ee M 5.9 1973 POINT MUGU ee M 6.5 1976 FRIULI ee M 5.1 1978 SANTA BARBARA se M 6.2 1972 MANAGUA se M 8.4 1964 ALASKA se M 7.7 - 1952 KERN COUNTY se M 7.4 1978 MlYAbl-KEN-0KI J

O SSRAP CONCLUSIONS FOR 8 EQUIPt1ENT CLASSES e EQUIPMENT INSTALLED IN NUCLEAR POWER PLANTS IS GENERALLY SIMILAR AND AT

, LEAST AS RUGGED AS THAT INSTALLED IN CONVENTIONAL POWER PLANTS e THIS EQUIPMENT, WHEN PROPERLY ANCil0 RED AND WITil SOME RESERVATIONS, ilAS AN INHERENT SEISMIC RUGGEDNESS AND llAS A DEMONSTRATED CAPABILITY TO WITHSTAND SUBSTANTIAL SEISMIC MOTION WIT 110VT STRUCTURAL DAMAGE e FUNCTIONALITY AFTER THE STRONG SilAKING HAS ENDED llAS ALSO BEEN DEMONSTRATED, BUT THE ABSENCE OF RELAY CilATTER DURING STRONG SilAKING HAS NOT BEEN DEMONSTRATED e

5

• SSRAP CONCLUSIONS CONTINUED e WITH SEVERAL IMPORTANT CAVEATS AND EXCLUSIONS, IT IS Tile SSRAP JUDGMENT THAT BELOW CERTAIN SEISMIC MOTION B0UNDS IT IS UNNECESSARY TO PERFORM EXPLICIT SEISMIC QUALIFICATION OF EXISTING EQUIPMENT IN TilESE EIGliT CLASSES FOR OPERATING NUCLEAR POWER PLANTS TO DEMONSTRATE FUNCTIONALITY AFTER THE STRONG SHAKING llAS ENDED e THE EXISTING DATA BASE REASONABLY DEMONSTRATES Tile SEISMIC RUGGEDNESS OF THIS EQUIPMENT UP TO TilESE SEISMIC MOTION BOUNDS 4

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o MAJOR RESERVATION ,

THOROUGH WALKTilROUGH OF PLANTS USING EXPERIENCE DATA NEEDED s ANCHORAGE ,

e IMPACTING ADJACENT STRUCTURES & EQUIPMENT se CLEARANCE -

ee INADEQUATE ANCHORAGE OF ADJACENT EQUIPMENT e UNUSUAL 0R NON-TYPICAL CONDITIONS O O

s ANCll0 RAGE e MUST ASSURE ADEQUATE ANCil0 RAGE e INADEQUATE ANCHORAGE INCLUDES:

se SHORT OR P0ORLY INSTALLED BOLTS OR EXPAHSION ANCil0RS se IMPROPER WELDING se BENDING OF SHEET METAL FRAMES AT ANCil0R e EQUIPMENT'ANCil0 RAGE MUST BE STRONG EN00Gil TO RESIST ANTICIPATED FORCES AND STIFF EN0 Ugli TO PREVENT EXCESSIVE MOVEMENT OF Tile EQUIPMENT AND POTENTI AL RESONANCE RESPONSE WITil Tile STRUCTURE se FOR ELECTRICAL EQUIPMENT CABINETS, BASE ANCil0 RAGE Sil0VLD PROVIDE A FREQUENCY OF APPROXIMATELY 8 IlZ OR GREATER FOR Tile ANCl10 RED CABINETS e

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LESSER RESERVATION f'

e IF POSSIBLE, EQUIPMENT FAILURES DURING ALASKA AND MANAGUA EARTHQUAKES Sil0VLD BE MORE Til0ROUGilLY ADDRESSED e THE DRAFT SQUG SUBMITTAL 0F NOVEMBER 21, 1983 ON Tills SUBJECT IS INADEQUATE

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OUTSIDE SCOPE OF SSRAP CONCLUSIONS e RELAY CilATTER DURING STRONG SilAKING

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PROBLEM AREAS IN PAST EARTl100AKES e INADEQUATE ANCHORAGE (0VERTURNING, SLIDING, EXCESSIVE DEFORMATION) e IMPACTING FORCES

'e LOSS OF UTILITIES TO EQUIPMENT (AIR, POWER, FUEL, COOLING LINES) e RELAY CHATTER ~

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• SSRAP BELIEVES ITS RESERVATIONS COVER EACil 0F TilESE ITEMS 4

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BOUNDING SPECTRA USAGE e FOR EQUIPMENT MOUNTED LESS TilAN 40 FEET AB0VE GRADE (TOP OF GROUND SURROUNDING BUILDING) EITilER OF TWO CRITERIA IS ACCEPTABLE:

1. HORIZONTAL GROUND 5% DAMPED RESPONSE SPECTRUM LESS TilAN B0UNDING SPECTRUM AT AND AB0VE EQUIPMENT NATURAL FREQUENCY

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2.  ; HORIZONTAL FLOOR 5% DAMPED RESPONSE SPECTRUM AT EQUIPMENT BASE LESS THAN 1.5 TIMES B0UNDING SPECTRUM AT AND AB0VE EQUIPMENT NATURAL FREQUENCY e FOR EQUIPMENT MOUNTED MORE THAN 40 FEET AB0VE GRADE, ONLY CRITER10N 2 AB0VE IS ACCEPTABLE

EQUIPMENT CLASS BOUNDING SPECTRA MOTOR CONTROL CENTERS LOW-VOLTAGE (1180-V) SWITCilGEAR TYPE B METAL-CLAD (2.11 T0 ti-KV) SWITCilGEAR TRANSFORMERS MOTOR-0PERATED VALVES

.WITH LARGE ECCENTRIC OPERATOR TYPE C -

LENGTHS TO PIPE DIAMETER RATIOS OTHER MOTOR-0PERATED VALVES-AIR-0PERATED VALVES TYPE A -

HORIZONTAL PUMPS VERTICAL PUMPS .

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PLEASANT VALLEY PUMPING PLANT (C0ALINGA EARTil0VAKE) e TYPE B - SYLMAR CONVERTER STATION (SAN FERNAND0 EARTil0UAKE) .

e TYPE C - VALLEY STEAM PLANT (SAN FERNAND0 EARTil00AKE)

BURBANK POWER PLANT (SAN FERNANDO EARTl100AKE) 4

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COMMENTS ON TYPE C B0UNDING SPECTRUM e APPLIES TO SMALL PIPE DIAMETER MOTOR OPERATOR VALVES AND MOTOR OPERATOR VALVES WITil LARGE ECCENTRIC ~0PERATOR LENGTilS TO PIPE DIAMETER RATIOS e , SSRAP JUDGES Tills SPECTRU.1 B0UND LIKELY TO BE EXCESSIVELY CONSERVATIVE e HOWEVER, NO EXPERIENCE DATA WITil HIGilER GROUND MOTION INPUT WAS SUBMITTED _ ,

BY SQUG FOR Ti1ESE VALVES e SSRAP WISilES TO ENCOURAGE S00G TO SEARCil FOR ADDITIONAL EXPERIENCE OR TESTING DATA ON TilESE VALVES WillCil MIGilT ENABLE T.!!E TYPE C SPECTRUM TO BE INCREASED D

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Il0RIZONTAL PUMPS l

EXPERIENCE DATA DEMONSTRATES SEISMIC RUGGEDNESS FOR ALL ll0RIZONTAL PUMPS SUBJECTED TO GROUND MOTION LESS TilAN Tile TYPE A BOUNDING SPECTRUM WITil THE FOLLOWING CAVEATS.

CAVEATS:

e ADEQUATE ANCl10 RAGE e RIGID INTERCONNECTION BETWEEN PUMP AND MOTOR BASES 9 O

VERTICAL PUMPS EXPERIENCE DATA DEMONSTRATES SEISMIC RUGGEDNESS FOR Tile FOLLOWING PORTIONS OF VERTICAL PUMPS SUBJECTED TO GROUND MOTION.LESS TilAN Tile TYPE A B0UNDING SPECTRUM:

e ALL PORTIONS AB0VE Tile il00 SING BASE FLANGE e SHAFTS UP TO 20 FEET LENGTil FOR TURBINE PUMPS S0 LONG AS SilAFT IS

, SUPPORTED AT ITS BASE OFF 0F CANTILEVERED CASING ,

e IN OTHER CASES, SEISMIC ADE00ACY OF SilAFT SIIOULD BE DETERMINED BY ANALYSIS CAVEATS:

e ADEQUATE ANCl10 RAGE e INCREASED BEARING WEAR MAY OCCUR AFTER EARTil00AKE O

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MOTOR OPERATED VALVES .

EXPERIENCE DATA DEMONSTRATES SEISMIC RUGGEDNESS OF ALL MOTOR OPERATED VALVES WilICil FALL WITillN RANGE OF EXPERIENCE DATA SUBJECTED TO GROUND

. MOTION LESS THA" Tile APPLICABLE BOUNDING SPECTRUM WITil Tile FOLLOWING CAVEATS.

CAVEATS:

e NEITilER VALVE Il0USING NOR YOLK IS OF CAST IRON .

e VALVE MOUNTED ON AT LEAST 2-INCil DIAMETER PIPE e Tile ACTUATOR IS SUPPORTED BY Tile PIPE AND NOT INDEPENDENTLY BRACED TO Tile STRUCTURE UNLESS PIPE IS ALSO BRACED IMMEDIATELY ADJACENT TO Tile VALVE TO A COMMON STRUCTURE m

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TYPE C SPECTRUM

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AIR OPERATED VALVES EXPERIENCE DATA DEMONSTRATES SEISMIC RUGGEDNESS OF ALL AIR OPERATED VALVES WillCil FALL WITilIN RANGE'0F EXPERIENCE DATA SUBJECTED TO GROUND MOTION LESS TilAN Tile TYPE A BOUNDING SPECTRUM WITil FOLLOWING CAVEATS.

CAVEATS:

c VALVE il00 SING IS NOT OF CAST 1RON e VALVE MOUNTED ON AT LEAST 1-INCil DIAMETER PIPE .

a T11E ACTUATOR IS SUPPORTED BY Tile PIPE AND NOT INDEPENDENTLY BRACED TO Tile STRUCTURE UNLESS PIPE IS ALSO BRACED IMMEDIATELY ADJACENT TO Tile VALVE TO A C0 VION STRUCTURE 9 9

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AIR & MOTOR OPERATED VALVES OUTSIDE RANGE OF EXPERIENCE DATA SEISMIC RUGGEDNESS FOR GR'0VND MOTION UP TO TYPE A SPECTRUM FOR YOKES WITil LENG OR OPERATOR WEIGilTS GREATER TilAN THE EXPERIENCE DATA RANGE MAY BE DEMONSTRATED BY STATIC PULL TESTS o

STATIC PULL FORCE APPLIED AT Tile CENTER OF GRAVITY OF OPERATOR ,

o STATIC PULL FORCE EQUAL TO TilREE (3) TIMES APPROXIMATE OPERATOR WEIGilT -

o APPLIED NON-CONCURRENTLY IN EACil 0F~ TilREE ORTil0 GONAL PRINCIPAL AXES OF YOKE OTilER CAVEATS REMAIN IN EFFECT O e e

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MOTOR CONTROL CENTERS & SWITCilGEAR -

EXPERIENCE DATA DEMONSTRATES SEISMIC RUGGEDNESS.FOR MOTOR CONTROL CENTERS GEAR SUBJECTED TO GROUND MOTION LESS TilAN Tile TYPE B BOUNDING SPECTRUM WITH FOLLOWIRG CAVEATS.

CAVEATS:

e ADEQUATE ANC110 RAGE OF CABINET es STRENGTil ce STIFFilESS ( 2 811Z CABillET FREQUENCY) c FORM SIMILAR TO TilAT OF CABINETS WITilIN EXPERIENCE DATA BASE e MAXIMUM CUTOUT DIMENSTION FOR CABINET SilEATillNG o

co MOTOR CONTROL CENTERS 8 LOW VOLTAGE SWITCilGEAR - 6" WIDE X 12" IIIGil .'

EXTERNALLY MOUNTED EQUIPMENT WEIGilT LESS TllAN 100#

c ALL lilTERNAL SUBASSEMBLIES MUST BE SECURELY ATTACllED TO CABINETS WillCH CONTAIN TilEM o

ADJACENT ASSEMBLIES (CABINETS) MUST BE STRUCTURALLY INTERCONNECTED

UNIT SUBSTATION TRANSFORMERS EXPERIENCE DATA DEMONSTRATES SEISMIC RUGGEDNESS FOR UNIT SUBSTATION TRANSFORM ASSOCIATED WITil LOW VOLTAGE AND METAL-CLAD SWITCilGEAR SUBJECTED TO GROUND MO LESS TilAN Tile TYPE B BOUNDING SPECTRUM WITil Tile FOLLOWING CAVEAT.

CAVEAT:

ADEQUATE ANCil0 RAGE OF TRANSFORMER TO ENCLOSURE 8 ADEQUATE '

ANCil0 RAGE OF ENCLOSURE

. e

~ _. , - _ _ _ _

SSRAP CONCLUSIONS FOR 8 EQUIPl1ENT CLASSES e

EQUIPMENT INSTALLED IN NUCLEAR POWER PLANTS IS GENERALLY SIMILAR AND AT LEAST AS RUGGED AS TilAT INSTALLED lil CONVENTIONAL POWER PLANTS e Tills EQUIPMENT, WilEN PROPERLY ANCil0 RED AND WITil SOME RESERVATIONS, HAS AN INHERENT SEISMIC RUGGEDNESS AND llAS A DEMONSTRATED CAPABILITY TO WITilSTAND SUBSTANTIAL SEISMIC MOTION WITil00T STRUCTURAL DAMAGE o FUNCTIONALITY AFTER THE STRONG SHAKING llAS ENDED llAS ALSO BEEN DEMONSTRATED, BUT TliE ABSEllCE OF RELAY CilATTER DURING STRONG SilAKING llAS NOT BEEN DEMONSTRATED 9

9 8 9

s SSRAP CONCLUSIONS CONTINUED e

klTil SEVERAL IMPORTNiT CAVEATS Afl0 EXCLUSIONS, IT IS Tile SSRAP JUDGMENT TilAT BELOW CERTAIN SEISMIC MOTION BOUNDS IT IS UNNECESSARY TO PERFORM EXPLICIT SEISMIC QUAllFICATION OF EXISTING EQUIPi1ENT IN TilESE EIGilT CLASSES FOR OPERATING NUCLEAR POWER PLANTS TO DEt10NSTRATE FUNCTIONAL AFTER Tile STRONG SilAKING llAS ENDED -

o Tile EXISTING DATA BASE REASONABLY DEMONSTRATES Tile SEISMIC RUGGEDNES Tills EDUlPMENT UP TO TilESE SEISMIC .90T10N BOUNDS 9

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s LXILNSION OF CONCLUSIONS TO NEW EQUIPMENT CLASSES o

SSRAP BEllEVES ITS CONCLUSIONS CAN BE EXTENDED TO OTHER CLASSES OF EQUIPMENT BUT ONLY WITH FURTHER STUDY ON A CLASS BY CLASS BASIS so EXPERIENCE DATA es TEST DATA c

EXAMPLE CANDIDATE CLASSES FOR EXTENSION OF CONCLUSIONS se llEAT EXCilANGERS se FANS os DIESEL GENERATORS se HVAC DUCTS so ELECTRICAL MOTORS es PIPING .

so AIR COMPRESSORS se CABLE TRAYS

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