ML19337B433

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Viewgraphs of SRV Discharge Loads Improved Definition & Application Methodology to Mark II Containments
ML19337B433
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 09/18/1980
From:
BURNS & ROE CO.
To:
Shared Package
ML19337B432 List:
References
NUDOCS 8010020400
Download: ML19337B433 (14)
v • d • e


Text

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9 SRV DISCHARGE LOADS I:!PRC'/EJ DE?I?lITI001 AilD APPLICATIO ! ".ETHODCLOGY TO l! ARK II C0flTA!liliEllTS PRE?AREJ 3Y BUR?!S AliD RCE, I?!C.

FOR APPLICATICtl TO WASHINGT0il PUELIC POWER SUPPLY SYSTEM WilP-2 THis DOCUMEilT CONTAINS POOR QUAllTY PAGES i

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SRV DISCHA.?CE C'/ '!T DESCRI3ED IN OFFR - RE/. 3 IN sui 2ARY, AFTER SRV ACTUATION THE FCLLOWI?iG E/E?lTS TAXE PLACE SEGUEilTIALLY.

SR'/ OPE.'lS; STEA.'1 FR0ii ?!AIN STEAfi L!.'IES FL0t.is INTO Af!D PRESSURIZES THE SRV DISCHARGE LINE (SRVDL);

lIATER INITIALLY Ill SRVDL IS DISCHARGED I'1TO SUFFRESSI0il FOOL;

- AIR INITIALLY Ill SRVDL IS DISCHARGED INTO SUFFRESSION FOOL; ST A!1 FLOWS THROUGH QUENCHER HOLES AND CONDENSES I'l THE SUFFRESSION FOOL.

P9ESE'!T 59V Discu;;gE Lean gE:!;t!Tig.il i

THE LOAD IS DE?It!ED AS SR'l " AIR EU33LE'.' LOAD AllD IS SPECIFIED AS A " RIGID 'dALL" PRESSURE LOAD ACTINC.2.': THF.

SUPPRESSI0ti PCOL WETTED PERIMETER.

THE LOAD SPECIFICATION IS DESCRI3ED IN DFFR-REV. 3 AflD COISISTS OF THE FOLL0t!ING ELEMENTS:

I.

PEAK (POSITIVE AtlD !iECATIVE) PRESSURE i

AEPLITUDES; II.

AN IDEALIZED PRESSURE TIME HISTORY (FREQUENCY CONTENT);

III.

SPATIAL DISTRIBUTION FOR PRESSURE, AND A METHOD FOR C0fiBI.'ll.'!G MULTI?LE SRV DISCHARGE EFFECTS.

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RES?ONSES OF WNP-2 CONTAI.'E.'lT STRUCTURE CALCULATED USIlG PRESENT/DFFR-REY. 3 LOAD DEFI.'lITI0fl ARE UNREALISTICALLY LARGE.

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CA0RSO IN-PLANT (FULL SCALD SRV DISCHARGE TESTS BECAME AVAILABLE At!D CONFI?f-iED EXPECTED C0flSERVATISi1 IN LOAD DEFINITION AND PREDICTED STRUCTUPAL RESPONSES.

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CONCLUSIONS I.

PRESENT/DFFR SRV DISCHARGE LOAD DEFINITION IS l

CONSERVATIVE.

i II.

STRUCTURAL MODELING TECHNIQUES AND ANALYTICAL i

PROCEDURES PRESENTLY USED TO CALCULATE STRUCTURAL l

RESPONSE TO SRV DISCHARGE LOADS NEED IMPROVEME.'lT.

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  • e OBJECT!'/ES OF T'r!IS STUDY I.

TO DEVELOP AN IMPROVED (.".0RE REALISTIC) SR'l DISCHARGE LOAD DEFINITION FROM AVAILABLE CA0RSO IN-PLANT SRV TEST RESULTS.

II.

TO DEVELOP STRUCTURAL F0DELING TECHNIQUES AND ANALYTICAL PROCEDURES ADEQUATE FOR CALCULATING STRUCTURAL RESPONSES TO SRV DISCHARGE LOADS IN BWR - MARK II GEOMETRY.

i TEST DATA USED IN THIS STUDY IN-PLANT (FULL SCALE) SRV ACTUATION TESTS IMPLEMENTED IN TWO FOREIGN BWR - MARK II PLANTS:

CA0RSO/ ITALY AND TOKAI-2/ JAPAN (SIMILAR TO WNP-2) o THESE PLANTS HAVE SRVDL's EQUIPPED WITH CROSS-QUENCHERS (SIMILAR TO THOSE USED IN WNP-2),

o TESTS INCLUDED SINGLE AND MULTIPLE SRV DISCHARGES, AT INITIAL AND SUBSEQUENT ACTUATION,

e SRV TESTS IN CAORSO PLANT (CONCRETE CONTAINMENT)

TWO SETS OF MEASUREMENTS OBTAINED INDEPENDENTLY BY:

o GE, UNDER "REVAL0TE" PROGRAN, MOSTLY INSIDE PRIllARY CONTAINF.ENT; PRESSURE Af1D ACCELERATION MEASUREMEiTS USED IN THIS STUDY.

o AfiN, UNDER "STRET" PROGRAM, NOSTLY OUTSIDE PRI!1ARY CONTAINNENT; ACCELERATION MEASURE?!ENTS USED IN THIS STUDY.

NOTE:

DIGITIZED DATA AVAILABLE ON MAGNETIC TAPES AND USED IN THIS STUDY TO ACHIEVE THE TWO V.IN OBJECTIVES.

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SRV TESTS IN TOKAI-2 PLOT (STEEL CONTAINMENT) i TO DATE, 0.'lLY SuffARY OF 70KAI 2 TEST.1ESULTS AVAILABLE i

AND USED Ifl THIS STUDY AS CONFIR"ATORY DATA (PRESSURES AND ACCELERATIONS).

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