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NUCLEAR REGULATORY COMMisslON ys 4
$.k 2 WASHINGTON, D. C. 20666
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NOV 18 E MEMORANDUM FOR:
R. h ttson, Director, Division of Systems Safety, ONRR FROM:
R. Tedesco, Assistant Director for Plant Systems, DSS
SUBJECT:
PROPOSED REVISIONS TO TASK ACTION PLAN A-39, " DETERMINATION OF SAFETY RELIEF VALVE (SRV) POOL DYNAMIC LOADS AND TEMPERATUP.E LIMITS FOR BWR CONTAINMENT" The purpose of this memorandum is to confirm our plan for development of proposed revisions to the Task Action Plan A-39, " Determination of Safety Relief Valve (SRV) Poo.] Dynamic Loads and Temperature Limits for BWR Containment." First we are proposing to change the task action manager from John Kudrick, who is a section leadcr, to Tsung Ming Su.
In addition, we propose to change the task action plan to include efforts for resolution of the recent GE Part 21 notification related to multiple actuation of safety relief valves and concomitant load increases for BWR water pressure-suppression type containments. This concern resulted from the recent study performed by GE of the primary system pressure response following an isolation event which results in more than one safety relief valve to be actuated consecutively. Consistent with the current plan, we will include generic resolutions for the Mark I, II and III types of containments but different from the current plan, we will include review and evaluations of the load combinations which involve relief valve operations only.
This concern involves the Reactor Systems Branch, the Instrumentation and Control Systems Branch, Structural Engineering Branch, Mechanical Engineering Branch and the Analysis Branch within DSS and the Plant Systems Branch and Engineering Branch of D0R and will require appropriate scheduling and manpower requirements.
We will follow the same procedures used for the initial approval for the task action plans; i.e., draft the changes and submit them to all concerned branches. We expect to have draft changes by November 22, 1977;
Contact:
T. M. Su, CSB 492-7711 8604010260 860114 PDR FDIA FIRESTDB5-665 PDR
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R. J. Mattson and allowing time for comments from other branches, we will provide you with a plan for your review by December 2,1977.
i-t.m Robert L. Tedesco, Assistant Director for Plant Systems Division of Systems Safety cc:
V. Stello R. Tedesco D. Ross J. Knight G. Lainas D, Eisenhut i
L. Shao W. Butler I. Sihweil R. Bosnak T. Novak Z. Rosztoczy T. Ippolito J. Guibert J. Kudrick T. Su S
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MARK I HYDRODYRAMIC/ STRUCTURAL INTERACTION l
FY 1977 1
LAWRENCE LIVERMORE LABORATORY THERM 0 FLUID MECHANICS GROUP R. W. MARTIN j
E. W. McCAULEY l
l PRESENTED TO USNRC-DOR NOVEMBER 15, 1977 l
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4 EXPERIMENTAL DATA EXISTS FOR SYSTEMS WITH t
DIFFERING FLEXIBILITIES.
I PURPOSE IS_TO DETERMINE EFFECT OF TORUS e
i WALL FLEXIBILITY ON HYDR 0 DYNAMICALLY INDUCED LOADS PRODUCED DURING SRV, LOCA CHUGGING, AND LOCA VENT CLEARING i
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Reference Dimensions for Monticello Plant Pressure
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RELATIVELY llo 20ftlllG RESTRICT!Gls i
SiMLL DEFORf'ATIONS i
e FlillTE DIFEPBiCE Slat (3-10HOURSPERPRO3tIr0 LAGRANGIAN ZONING LIMITATIG4S VISCOU3 DAt4'ING INSTABILITIES I
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at the Pool Bottom (SRV Discharge) ll0lt?%
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Input Pulse for LOCA Chugging Problem i
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TIME (SEC0tiDS)
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FIGURE 12. Effect of Torus Shell' Thickness on Total Vertical Force (LOCAChug)
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.m 1.0 FIGURE 13.
Effect of Torus Shell Thickness on fiorralized
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Peak Pressure at Pool Bottom (LOCA Chug),
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0 300 600 D/t 1.0(
FIGURE 14.
Effect of Torus Shell Thickness on flormalized Vertical Reaction Force (LOCA Chug) 8 s.
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300 60 ;
u.a.nrNcc D/t
,~ L8* ".on r.
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LinITATir.11S OF CUPJEIT DIALYSIS o STRUCilJPAL PLN!E SECTICtl f 0DELLING UllDERESTIf%TES RIGIDITY OF ACTUAL DESIGft o WDRODYilN11C.
LACK OF OUT-OF-Pl>4IE LIf11T IliTRODUCES TOO !UCH EllERGY Ifl TlIE SOURCE o PESULT
!lET EFFECT IS TO O'ERESTif%TE THE DEPENDErlCE OF FORCES Oil WALL THICKf1ESS 1.WNnrNCE
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10RY
+
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l e LOCA VEiff CLEARIiiG NU3tEl I
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CHARACTERIZED BY LARGE FLUID MOTIOf4S (Ili$FT) l REQUIRES EULERINI FORillLATIOff COUPLED TO i
LAGRN' GIN 4 SHELL i
EXISTIllG COD 2 UIIDER DEVELOPIEtJT, QWib WAS EXPECTED TO PERFORf1 SATISFACTORILY
( LARGE $ C0f(TRACT )
'DilS IIORK WILL BE DEFERRED UffTIL FY 78 i
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CALCul.ATIO:lAL MATRIX i
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PROBLB1 M 0
300 600 i
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X
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LOCA VEIT CEAR i
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LAWRENCE 1.1\\/ERMORE LADORATORY 4
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SLIWRY OF FY 7/ ESULTS FOR SRV NID LOCA CHUG PROBEf1S ;
PRESSURE llISTORIES Off SHELL PRESSURE ll! STORIES Iri Fluto FIE w SHELL DISPLACEfGIT ll! STORIES SOURCEDOUNDARYlllSTORIES VERTICALFORCElllSTORIES VERTICAL FORCE VS D/f PATro i
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,;;g.AWMFNCE 1
- l.IVERMORE na LABORATORY e
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WORK FOR FY 78 FOR THE SRV Ai1D LOCA CHUG PROBLEMS IMPROVED MODELING OF THE STRUCTURE (3D)
VARIATION OF PULSE WIDTHS AND AMPLITUDES IMPROVED MODELING OF THE SOURCE SEPARATE STRUCTURAL ANALYSIS TO IMPROVE APPROXIMATION FOR ACTUAL PSS (RETAIN 2D SIMPLICITY) e FOR THE LOCA VENT CLEARIi1G PROBLEM MODIFICATION OF VISCOUS DAMPING VALIDATION OF " SCALED" EULERIAN TO LAGRANGIAN BOUNDARY LIMIT D/T TO 300+ WITH EXISTING LAGRANGE MODIFY LAGRANGE TO TREAT'60.0:1 MODIFY TO INCURPORATE SHELL BOUNDARY O
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e D. L9ifv7RSsu J LABORATORY
I i
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j FINITE ELEMEiiT CODE - DTVIS2 i
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TWO-DIMENSIONAL, IMPLICIT, LINEAR i
e DYNAMIC THERMOVISC0 ELASTIC SOLIDS l
l
.e CONSTANT PRESSURE FLUID ELEMENTS e
ELASTIC THIN SHELL ELEMENTS i
e SLIDE ELEMENTS
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_. _ _ _. _ _ _ -. _ _.. ~, _.. _ _ _. _ _, _,. _ _ -, _, _ _ _ _ _ _,., _,,, _,,. -, _,.. -. _, _ _ _ _ _.. _ _. _ _ -
l JAN x:5 e
t DTVIS2 REFEREi1CE DOCUMEliTATION e
" EVALUATION OF ilUMERICAL INTEGRATION METHODS IN ELAST0 DYNAMICS" G. L. GOUD,REAU R. L. TAYLOR COMPUTER llETHODS IN APPLIED IlECHANICS AND ENGINEERING V.2 (1973), NO. 1 NORTH HOLLAND PUBLISHING CO.
AMSTERDAM e
" EVALUATION OF DISCRETE METHODS FOR THE LINEAR DYNAMIC RESPONSE OF ELASTIC AND VISC0 ELASTIC SOLIDS" G. L. GOUDREAU 4
flat 10NAL IECHNICAL INFORMATION SERVICE OPERATIONS DIvlSION SPRINGFIELD, VA 22151, USA i
ACCESSION NO. PB194-286 i
f~~1 LAWRENCE l....J 1.IVERMORE l
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ABORATORY l
1
.