ML050980112

Decontamination Port, Harmonic Stress Analysis of Loop B Port

ML050980112
Person / Time
Site:	Hope Creek
Issue date:	04/01/2005
From:	Bird E, Carroll D, Keating R MPR Associates
To:	Office of Nuclear Reactor Regulation, Public Service Enterprise Group
References
Task No. 1108-0502-0002-00 C-0142, Attach 17
Download: ML050980112 (13)

Text

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-i" :CALCULATION TITLEPAGE

'PSEGNuclear LLC P. Ie'l13 Project:-. Task No.

.vAA kJ' ;sdr e.~. Port

.Decontaminiation .s 1

,l108-0502-0002-,00 .

Tiele: .

Calculation ,o.i

.~jic alysis of Loop tB' Port ,.h.t, A -1; Prepa rer-li Date - .RevkeweI I 'At Approver Re^ No'.-

Dou Ca Iroll -R ob ert K eatin J

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- 1 0. - URPOSE -;,!-. TO.

, The purpose of this calculation is to estimate thealt'nat gste ss atthe atc int weldf the ^ a- 4'

-Hope reeketorRrciculiation oop -'Bd 'ct in ionot'for aunit inup sin us oid

.i . The niet eld & developed a c kd ing plant' e'ation'.-

hittiac Li U2.0 -- BACKGROUND faileddecontaminationportslocateonte bsuction side f .'lie' a to' ecivlati

'Pmp' within-the isolable sectionofReci 1ltioii piping.'The potis designed'o beused

.i'. rd u entn g origutag to fi ishwateithi~ e R ecirculattonipipin .Du thf ng or apl t

'. ope'at~io s, the port'is sealed wih a boiledbla kflange.'--'-,,' : I - thec ...  ;:. .' .'..;;" '!

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SUMMARY

O RESULTS

• a4 The-'.,' alternating stress is'3 ksi for an su d 1 g harmonic vibration at thefirst mode natural 7'...

"." ;ue'ncy.

4.0 ANALYTIC PROACH

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'The alternating stressiwassdetermined by.a haiionic forced response analysis The'harmonic

- .aialysistechniqueixi d'to'determine the'teady-state forceresponse of alinear strctue^ to' a' load that variessinusoidally onic ly)Whaifi time; A unit sinusoida (haonic) load'ofl g;'

' was 'piie p the at first mode naturalfiruency of 122 ferene 1).Thehamnic ana ysiseis

' linear' conseq u'entlythess rs ts i'm 'this'clculation can'be ratioe to sinusoida input 1g;--. ,olevelsotherhh:- !'.--

.The'analysis wasperformed wit a three dimensional finite element model oftheport'and.a

seton of the Recirculation pipingTe.' model reprsents one- half of te Port ta e of

.synn.t:y'jthrughthe port' aisThe m'odel .was develope with the ANSYS compuitr program

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Icomponent in the direction of the dontamination iine axisSy is shown. his stress component-

-is in thecra opening direction.> e pek st. 'lt e ben 30 ksi a - si. Te:

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stress ange is theefore 606ksi and the lterniting stosis n-alf of the stress:rage or30ksi Fig shows-the8 profe h hthethickness of the n pipe wall he- 44*4 stress varies from 3.6 ksi'on the pipeinside diameter to 30 ksi on the pipe outside diameter. .

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70 'REFERENCES . . ..

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o-oC0142;,"~NaiutraFPrequ:e'ncyo~o  ;' Pr evson' 1.

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. :.-AhAnsis p'rogram version8.1.:The- AYsis was perform'edon 280R ser ing

.:;'".'tbeSolaris:8 operating stem.'eh SS tinstallation verifi atioi is doc entd'in

_ \,.tA-:Q 8,141.'. .: .  :; *

. .3. u Guide1.61, "Dampngs or eismic Design of Nuclear ower

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