ML050980131

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Decontamination Port, Natural Frequency of Loop B Port
ML050980131
Person / Time
Site: Hope Creek PSEG icon.png
Issue date: 04/01/2005
From: Bird E, Keating R, Schlaseman C
MPR Associates
To:
Office of Nuclear Reactor Regulation, Public Service Enterprise Group
References
Task No. 1108-0502-0002-00 C-0142, Attach 16
Download: ML050980131 (14)
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>tv t i-MPR Associates, inc.

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~Aie xandra A221 CALCULATION TITLE PAGE

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-ppendi__A P oject Task No.'

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lope Cek Decon tamjination'Port.:,. '.....

.108-.0502k0o02,00U Titie:

Calculation No.

Natu'ral FrequencyofLoop 'B',Port Attach 16 'o C'

.42.

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.QUALITY ASSURANCE DOCUMENT

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-requirerientsof OCFRSO Appendix B, as specified in the MPR Quality Assurance Manual..

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I-Initial Issue Revised pipe'lengtih to3.75 inches for modified model consistent with'field'

.work. 'Corrected material propertics formodifiedmodel. U a

result for modified mo'deL..

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The revision number found on each indiidualpage ofthe calculaton levelof the calculation in effctat the time that page was last revised.

icaRmos the revision

,MIPR QA Form QA3.1.2. Rw~. I

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.- 'MPRAssociates, Inc.

320 K~ng Street'.

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- CalculationNo

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PURPOSE,.'-

,'#.Ie purpose of this calculation is to estimate the first mode natural frequencyof the Hope.Creek-- -

Reatc'torRecirc'ulatioiLop :B',decbhtamination port. Two configurations are evaluated the

.'originaa-builtconfliguration and aimodified (shorteined),configuration.'

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-.BACKGROUND,

'Thefailed decontamination por is located on the suction sideof the 'B' Reactor'Re.i'culation

,, ':Pup 'with 'the isolabile section of Re irc'ulation'-pipng. The"port is design'ed to be us'-ed-

,,,,inuently during outages to flush WaterbrougVthe Re iculation piping. D-ing normal pgant

.-operations, thepo'rtis sealed witi blted blak flange.

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-. 'The origjai port' includes a 7.5 inch long n

c ssio4nc e8p fnsche2 nd 10). The failed port is'shown in Figure-1.

Fligure 2-1.: Loop 'B' Oecontamina'tion Port 1APRO~orn:QA4~3Rev.

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320 King Street Alexandra, VA 22314..

Calculation No.

Prepared By

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SUMMARY

'OF RESULTS The' irst mode natural frequency for the origin'al failed configuration is'122 hz;' the first mode

.natuIral frequencyforthe moifed cofi itionis 179lhz'(Refence 9). In the modified configra tion, the length of the schedule.80 pipe is shortened om 7.5 inche to-3.75 inches (assumed).

4.0 ANALYTIC APROACH.

The deontaminiation port natural fruencies were determined with a tee-dmensional finite

, element mdel..The m6del represents one-half of the port with a plane of synunetry-through the

..- :port as. The model.wa'de'qelop'ed.ith'e ANSYS 'co'mputer p' '

'fere solid m-d4l of the' riinalgcvoiguration is shown in Fi gu e4-1;tefinite'element riodel of the'.'

'.'original configuration is shown in Fire 4. The original and'modified config rations are

'66m'.' o 'i nFi- 4-3.

Fiure 4-1. Solid Model for riginal Decontamination Port

-1 MPRIQA FOrm: t QA-3.14,

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Calculation No.

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Page: 6

.'Attach l6 to C-0142

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.a II II tI, Fig re 4-2. Finte'Ele ment Model fo rijina iecon tam a n Port J

t MPR QA Form,: CA431 -3.'Rev. 0.

UXMPR32 Calculaton No.

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Figuire 4.' Original and'. MPdfed Dconbrnina'Uon Po.rts

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FINITE ELEMENT MODEL DESCRiPTION Th - ' - '

ifi ite elment model of he oaination potis a thre dimensiona solid mode'l

-epreSentation. The model in'clu'des" a short ength'fteRea'ctorcirculation'pipig ib e;'

- idolet decon'nination po piiigna 900W blind la'gei-.

ihe.;"'

btingh egohetr is not i'cluded; ebltie gardwareis icluded.

'ne-ialf of th'epo is modele recognizing symmetryperendicular to' the'Rcir t ion piping.

The-weight of water, instilation andbolting:Are included in themodel-withmass elements

(ANSYS el ementsMASS2).

The model is meshed withan 8-node'hexahedral element With-three degrees-eof-freedom per-node (ANSYS element SOLID45).

5.1 -Geometriy The geometric dimensions for themodel ofthb decontamination poqrtwere&detei References'2 tugh 6 and Reference' 1. Table 5-'lists the primary dimensior rmni'ned from ;

is used to develop MPR OA Form: OA-3.1-3, Rev. O

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Calculation No, Pepared By

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.the model Appenidix A 'shows an outline of the decontamination port with-the geometric.,

keypoints numbored.' Coordinates for the'Ieypoints are also provided in Appendix' A, The welding neckan'd blind flag'es ae 900 #,feren',ce 2). -The decontamination' ipeis 4.ij' Ch

...-.schedule 80 (Reference'2).:

Tabile 5-1.,Geometrac Parameters

.. ;Descriptlon DImension (inch)

Refereice

'Rec~rculatiori Pipe'OD 28 3

,. :Recirculation PipeThc:knwes 1.2 3

Weldolet Radius 4.1845

.4-Weldolet C ind ical S on Height

, 1.31 4

Weidolet Tapered Sectiorn eig'ht' 2.44 4.

P iip&<OD

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.ipe ID (S&1ul 680).;'

,, 3'826 5

Pipe Length (origin lmodifed) 7.5/3.75.:

assur d.

BindFlangeOD 11.5 6

BlindFange ised Fa'c OD 6.i875.'

6

-Blin'd&Weldingii6' kFlange Thic kess 1

6 Blind & Welding Neck Raised Fae n-Thckess '.0.25 6

Wedn F.ng ConicalHeIght

,2 stima.e:

..2 Boundary d

sConditio The only stru abundyco'nditio' applie to, he fnite element model were displacement

.cohstqints.i'Atte nemetiry ethat isperndpcuaid toii iftteRekirculationpipin axis and ":

passes'through'the'centerineod rl c

mnathon'o the' dislacements n omal to'tle piane.

.(z) are restrained. At he end oft eciuia ion pipe porion of he noei pposite eport,

-displacemntsineac of thethre Catesian coo inate dirctions (ux, uy and uz) a'rera ine'.'

.The structural boundaryconditions areshownfi Figure :5-1.

4.,

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1 MPR OA Form: OA4.143. Rev. 0

MP Ale Calculation' No.

Prepared By Checked By Attach 6 to C-0142.

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xxuy an uz) set wll o zero on this fce.-

mnodu~lus, he elastic

.'3deg' i s d belowi:

MPRQForm: 'A-313 Rev. 0 t

FIgure 5-1. -StriuduraI Boundar Conditiions 5" 3 Material Propertles The matenal properties used in the natural frequ'ency calculation are'the elastic Pos-on Ratio,,h R cic atb

, Poisoins io and the material density. From Reference2, the Recirculationp

,decontainination port are=304-stainless steel.' Thetemperature Used to evahiatet modulus is§532 deg ' (ReferenceF7).

rom Reference 8, the Celastic modulus at 25.7e66si.

The values of Poisson's'Ratio and material density'used in the analysis are liste oissosiRation 0.3 Density

'0.284 lb/in3

MPR Associates, inc.

3206King Street Alexandria, VA -22314-Calculation No.

Prepared By

-Checked By Page: 10 Attach&16to'-0142 IRevision:

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5. 4 'Added Mass The weight of water.in'the decontarnination port,:insulation and 'bolting were included in the model with mass elements. Note that the fiite 'eleinent model rcpresents one-half of the
geometry. Consequently, the total weights were ditided by two in the model.

For the bolting weitlits, note that the welding neck and blind flanges arerepresentd in,.the finite

.eleent'model without holesb.-The holes are nominaly filled withthe bolts. Consequently, the O.

bolting, weiiht

'that needs to be added'is te e 1/2 inch section'between the flanges and the'boited

'lenths outside the flanges.

. he weights in. T able 5-2 were assumed fore a.theani-ysis:

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'Table.' Weights Original * ! Modlfied.

.item Port Weight Pot Weight Comments

.i) llb)

,Water density of 4 9

ibIft 3, cylindrical water

.Water.5

.4 volume 3.826 inch diameter by5 irches l','.:.-.;ong (11 inhies' for modified),.

Insulation

5.

', -.'Refeence 7 foronal, estimated for modifed 6 blts, 1.125 Inch diameter, 0.5 inclength Bolting 7

between flanges; plus 8 bolts and nuts, estimated;i.5 Inch long, i.5.Inch diameter MPR OA Formn-OA-3.1;3. Pev., 0

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Calculation No.

'Prepared By Checked By Attach 16 to C-ii42 -

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-6.0 R EFERENCES E

.S.

Tlhe finite elemnentmodel was developed and analyzed w.ith the ANSYS Aimlysissprog'ran'Versioi 8.1. The I

analysis w'a perforrn'd otn a Sun'28

.the Solans 8 Operating system.'The ANSYS installation verification is'

-QA-81-1.

-*2....General Electric drawing 761E350,Sheet '2,Revision'14.

PR Asscits, Inc.

20 King!Street',

lexandia,-VA 22314.

Page: 11 Revision: -0 F i n t E l m n locumented in

~5) 1-iR6Visfion

'3.-.

Asoiated Piping '&Engineering'drawing 10855-N1-B31-(G001-0194'(

4.

Gene'ral Electric drawing '31C7544,` Rvision C, "Weldolet Nozzle;"

5.'

'Crane Technical Paper'41O.'

.6. ;Tu'be Turn Catalognurmber 1 1 i-943.

7

-Email fom Philk ush,MR) todwar ird R) dated March 30,2005,

-Dec6ntiminanio& Line Details.

'8.. ASMEBo~iler &Prens 'Vs.elC'd

,2004 Prt'D; Properties,Tabl 1TM-G

'p'

  • L9.

Coinp'uter output files 11080502.ebb-i 1 tru gh?

108-5 2-ebb -14

.10 Facs *ile fr A. GJcia PR K ting (MPR) datd M h30,205, '"Field ke c es."

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VA AMPIR PI Calculation No.

Prepared By

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/,/.4 "Geo'Metrd Keypoint

.FiguiresA- 'and A-2 show an outlinebofthe decontaminationport'model.'The fli numbe'd gedom'etricckeypoints. Coordinates for the' kypointstare listed in table Associates, Inc.

'King Street afndria,VAA 22314, Page: A-I Revision:

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A-1 Fe MORdA or: Q433~1Re.-

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Figu'reA-I. GeomieticKeypoints i

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  • 320 KIng Street Alexandira,'VA 22314

-Calcuialon'No.

Prepared By Checked By

.Page:' iA-.2' Attach 16'to C-0142 Revision: :0

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.. i, Figure A-2..GeometIc Keyppints, Detail MPR QA Form: bA-3.1V3. Rev. 0

MPR Associates, Inc.

. ;E-M D.,

320 King Street Ale xandrnaVAA-22314,

-Calc'ulto'n'No.

Prepared By Checked By Page: A-3'

Attach 16 to C-0142 Revislon: O a7 Table A1. Keypoint Coordinates No.
5.'00 6.00

7.00' 11.00 12.00 14.00 15 :00 16.00 19.00 22.00 23.00 26.00 28:00 A 0 33.00' 35.00'

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  • -41:00 43.00

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'57:00

58.00

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'6300 65.00.*

z66.00

69'.00 71.00

'7300 74.00

.76.00

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-2:-25' 25.25

'12.80 0.00

-3.09 27.25 0.00

-14.'00'

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-5.75

'27.25 1.91 '

,27.25

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225.

17.75 1.91*

'29;'00 3.09 !

29.00 1.91

9. 2

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-;13.87 1.91

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-2.25 15.31

  • 1.91.' 17.75

',2.25 A 2.;60,;

418 13.36 225'.

.13.82

'4.18.

12.10O r309.

z2925

- - 191 29.25

'225 31.25

.191 -.

31.25 0...00 29.25

  • 3.09 '

r 29.50

  • ' 7'5 ~29.50 5.75
31.25 0.00 3.25 3;09 2'

"31.25 2.25 27.25

  • 1.91' 29.50 2.25

.29:00 2.225

'29.25

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