ML050980112

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Decontamination Port, Harmonic Stress Analysis of Loop B Port
ML050980112
Person / Time
Site: Hope Creek PSEG icon.png
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)
v • d • e


Text

-i" M PRR Associates Inc-MR.

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CALCULATION TITLEPAGE

'PSEGNuclear LLC P.

Ie'l13 Project:-.

Task No.

.~.

.Decontaminiation Port vAA kJ dr e

.s 1

s

,l108-0502-0002-,00.

Tiele:

Calculation,o.i

.~j ic alysis of Loop tB' Port A

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Approver

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

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The purpose of this calculation is to estimate thealt'nat

gste ss atthe atc int weldf the ^

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

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

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-- BACKGROUND failed decontaminationportslocateonte bsuction side f.'lie' a to' ecivlati

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

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rd u entn g origutag to fi ishwateithi~

thf e R ecirculattonipipin.Du ng or apl t

'. ope'at~io s, the port'is sealed wih a boiledbla k flange.'--'-,,' :

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SUMMARY

O RESULTS The -'.,'

alternating stress is'3 ksi for an su d 1 g harmonic vibration at thefirst mode natural

"." ; ue'ncy.

4.0 ANALYTIC PROACH

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

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

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the 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 h:-

,olevelsotherh 1g;--.

.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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Forasinu oidldis acemnent withthe form:-,

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.To determine the sinusodal displacement at a frequencyf 122 hzthat will result n an-acceleration f 1g. ot that.

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he stress a ysisim tssare provided in lor ontou p Figure

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

-is in thecra opening direction.> e pek st.

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ben 30 ksi a -

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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-stress varies from 3.6 ksi'on the pipeinside diameter to 30 ksi on the pipe outside diameter.

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'REFERENCES

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

-2.

.Teteitiidelanwithth ANSYS Fi iwte ElIemet

. :.-AhAnsis p'rogram version 8.1.: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 4

Computi'ou files 1108 05O21 and i O65-6b-2-2 I '

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