ML13108A219

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RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis
ML13108A219
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 04/04/2013
From: Larsen B
Becht Engineering, Becht Nuclear Services
To:
Office of Nuclear Reactor Regulation
References
ME-02-13-09, Rev 1
Download: ML13108A219 (19)
v • d • e


Text

BECHT Becht Engineering Company, Inc.

  • Becht Nuclear Services
  • www.bechtns.com 5224 Woodside Executive Court, Aiken, SC 29803
  • 803-648-7461 114 Columbia Point Drive, Suite A,Richland, WA 99352
  • 509-943-1625 IF AA00000000000"--1M RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Document No. ME-02-13-09 Revision No. 1 Project Number Project Name Client 20144 RCWU Repair Patch Energy Northwest Quality Assurance Open Items Prevedfied Software Used N/A No ANSYS 14.0 Originator Verifier Approver 414/2013 4/4/2013 4/4/2013 Brian Larsen Ken Stoops Jack Cole Calculation Cover Sheet Page I of 19

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 2 of 19 Table of Contents

1. Objective and Scope ............................................................................................................................................. 3
1. Summary of Analysis Results................................................................................................................................ 3
2. Repair Details ........................................................................................................................................................ 3
3. Open Items ............................................................................................................................................................ 3
4. Repair Description ................................................................................................................................................. 4
5. Evaluation Requirements ...................................................................................................................................... 4 5.1 Allowable Stress ........................................................................................................................................... 4 5.1.1 A106 Gr B.Carbon Steel Material Properties .................................................................................... 4 5.1.2 Weld filler for Carbon steel ....................................................................................................................... 4 5.1.3 Allowable Stress for the Pipe and Patch ............................................................................................. 4 5.1.4 Allowable Weld Stress Criteria ................................................................................................................. 4
6. Modeling and Inputs .............................................................................................................................................. 5 6.1 Element types ............................................................................................................................................... 5 6.2 Boundary conditions ..................................................................................................................................... 5 6.3 Applied Loads ............................................................................................................................................... 5
7. Software ................................................................................................................................................................ 6 References ..................................................................................................................................................................... 7 Tables ............................................................................................................................................................................ 8 Figures ........................................................................................................................................................................... 9 Appendix A- Evaluation of Weld ............................................................................................................................... 14 - Computer Files .................................................................................................................................. 17 Calculation Verification ................................................................................................................................................. 18 Record of Revisions ..................................................................................................................................................... 19 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803
  • 803-648-7461 www.bechtns.com Richland, WA 99352 *509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 3 of 19

1. Objective and Scope Provide an evaluation of a proposed patch repair for the leaking RWCU pipe located between two stages of the RWCU heat exchanger.
2. Summary of Analysis Results The maximum membrane + bending stress of the 4" schedule 80 pipe is 20,526 psi occurring at a stress concentration in the comer of the 1"x 3"material removed to simulate the corroded pipe area. The maximum demand to capacity ratio (D/C) is (20,526 psi/22,500 psi) = 0.91. This is a peak value based on the modeling of the sharp comer as shown in Figure 7. The maximum membrane + bending stress intensity of the pipe is 18,551 psi with that stress concentration removed as shown in Figure 8. The maximum membrane stress intensity for the pipe is 11,903 psi as shown in Figure 5.

The maximum membrane + bending stress of the V" Patch is 21,378 psi as shown in Figure 10. The maximum membrane stress intensity for the pipe is 6,679 psi as shown in Figure 9. The maximum demand to capacity ratio (D/C) is (21,378 psi/22,500 psi) = 0.95.

The pipe to patch welded connection requires a minimum 5/16" fillet weld. The fillet weld is within the allowable as calculated in Appendix A. Two separate weld evaluations are performed each with different methodology. A-1 conservatively takes the peak load occurring on a single element of the weld. The peak stress demand/capacity ratio (D/C) is 1.09 as shown in A-I. This peak stress will be redistributed and spread along the line of the weld.

Therefore, the line of the weld is evaluated utilizing a Blodgett square weld line calculation is shown inA-2 demonstrating that the 5/16" fillet weld has sufficient margin and a D/C of 0.80.

3. Repair Details (a) The repair analyzed is a fillet welded patch, in accordance with ASME PCC-2 Article 2.12 (Ref. 1.2).

(b) The pipe is ASTM A 106 Grade B,4" Schedule 80 pipe (4.5 in.OD x 0.337in. wall), (Ref. 4.4).

(c) The design pressure and temperature are 1450 psi @ 575°F (Ref. 4.4).

(d) A cut-out 1"x 3"is removed from the pipe at the location and corrosion size based upon measurements provided by field measurements from Energy Northwest. The location indicated in Figure 1, is to simulate a postulated through-wall corrosion occuring in the pipe, approximately the pattern measured above (Ref.

4.4).

(e) The pad is sized to be 3.5" x 5.25" x 0.5" thick patch as detailed in Figure 1. Afillet weld is simulated with combin14 elements attaching the patch plate to the existing nominal 4" schedule 80 pipe at the weld location (See Figure 4).

(f) The pipe and patch stresses are presented in Table 1 and Figures 5 through 10. Membrane and Membrane

+ Bending stresses in the pipe and the patch plate meet ASME Section VIII Division 11 (201 la) Part 5 Section 5.2.2.Section VIII (g) The weld loads are extracted from ANSYS and at each node location are checked for weld sizing and the 5/16" fillet weld is qualified in Appendix A. The weld qualifies to the requirements of PCC-2-201 1 (Ref. 1.2) as documented in Annex 1.

4. Open Items None 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803 , 803-648-7461 www.bechtns.com Richland, WA 99352
  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Reqenerafive Heat Exchanqer PiDinq ReDair Patch Analvsis Paue 4 of 19

5. Repair Description (a) The repair analyzed is a fillet welded patch, in accordance with ASME PCC-2 Article 2.12 (Ref. 1.2).

(b) The pipe is ASTM A 106 Grade B 4" Schedule 80 pipe (4.5 in.OD x 0.337in. wall) (Ref. 4.4).

(c) The design pressure and temperature are 1450 psi @ 575*F (Ref. 4.4).

(d) A cut-out 1"x 3" is removed from the pipe, at the location indicated in Figure 1,to simulate a postulated through-wall corrosion occuring inthe pipe per measurements by Energy Northwest (Ref. 4.4).

(e) A 3.5" x 5.25" x 0.5" thick patch size based on pipe corrosion measurements provided by Energy Northwest is shown in Figure 1.

6. Evaluation Requirements The repair of a degraded pressure retaining component is not covered by the rules of construction codes such as ASME III or B31.1. These Codes are intended for new construction. Guidance for repair of pressure components is provided by post construction codes such as PCC-2, API 579/ ASME FFS-1, or ASME Section XI. The leaking RWCU piping is classified as B31.1. Initially, the proposed repair is a patch plate following the rules of PCC-2 (Ref.

1,2). The simplified rules of PCC-2 are not met. Thus the detailed fitness for service evaluation methods of ASME FFS-1 (Ref. 1.6) are utilized. FFS-1 allows for detailed analysis utilizing ASME Section VIII, Div. 2.

(a) The design pressure and temperature are 1450 psi @ 575°F (Ref. 4.4).

6,1 Allowable Stress The material strength per Section IIof the ASME code (Ref. 1.3) and B31.1 (Ref. 1.1) and the allowable stresses are discussed in the following sections.

6,1.1 A 106 Gr B. CarbonSteel MaterialProperties

" Elastic modulus: E = 2.68x10 7 psi (Ref. 1.3) at 600°F

  • Yield Strength (ASME): Sy = 27,225 psi (Ref. 1.3) at 575 0 F
  • Allowable Stress S = 15,000 psi (Ref. 1.1) at 600°F 6.1.2 Weld filler for Carbonsteel Weld filler material is compatible with the pipe and fitting material specified. The material identified for use is E70S-2 or E7018. The material has a 70,000 psi minimum tensile strength.

6.1.3 Allowable Stress for the Pipe and Patch ASME VIII Division II(Ref. 1.4) describes the primary allowable stress as developed by use of yield strength. Per ASME B31.1, 1971 the allowable general membrane stress is 15,000 psi. The combined membrane and bending design stress is 1.5(15,000 psi) = 22,500 psi.

6.1.4 Allowable Weld Stress Criteria The allowable stress for each weld type is addressed in Table 2.3 of AWS D1.1 (Ref. 1.5). Adescription of each criterion is shown next.

5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803 ° 803-648-7461 www.bechtns.com Richland, WA 99352

  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 5 of 19 Fillet Welds Shearon the effective area:0.30 x nominal tensile strength of the filler metal, except shearstress on base metal shallnot exceed 0.40 xyield strength of the base metal Based on the AWS code and the material properties, the allowable stresses for Service Level ALoading are calculated as follows.Section VIII, Division 1, Table UW-12 provides joint efficiency factors for ARC and Gas Welded Joints. The plate fillet weld is equivalent to a Category C fillet. Table UW-12 Type 7 states that E in the design formulas at = 70,000 psi Filler metal tensile strength per AWS cr= 27,225 psi Base metal yield strength per ASME Code at 575 0 F Fillet Welds Oshear = 0.3x70,000 psi = 21,000 psi allowable tensile strength of filler material

= 0.4x27,225 psi = 10,890 psi allowable yield strength of base material Use 10,890 psi

7. Modeling and Inputs The equipment is evaluated using ANSYS version 14.0, a general-purpose finite element analysis (FEA) program.

The finite element analysis technique is used to develop stresses in the pipe, so as to demonstrate compliance with allowable stress limits. Inaddition, selected hand calculations are performed to check components not analyzed in the FEA model. Alist of input and output files is found inAttachment 1. The units used in the ANSYS model are inches, pounds, and seconds.

7.1 Element types SHELL281 elements are used to model the pipe and the patch. These are shell elements with (8) nodes each with (6)degrees of freedom. The element supports both membrane and bending stiffnesses. The pipe shell thickness is 0.337 in and the patch thickness is 0.5 in. Element coordinate systems and derived section properties are automatically determined by ANSYS.

COMBIN14 elements are used to simulate the fillet weld for the patch. These are uniaxial spring elements with (2) nodes each with (3)degrees of freedom. A key option is used to limit each element to one degree of freedom each.

Three single degree of freedom (DOF) translation only springs are used at each node and the forces passing through these elements are used to calculate the required weld size. Classical methods of evaluating welds do not credit a single line fillet weld with moment capacity parallel to the weld line; therefore the springs are used to limit effective degrees of freedom to translation only. Also, spring elements allow for easy extraction of forces at the weld for manual evaluation. The stiffness of the spring is infinitely rigid and uses a value 1Ell Ibf/in.

7.2 Boundary conditions The 4" Schedule 80 pipe is modeled inANSYS with fixed-fixed ends (Figures 2 and 3). A sufficient length of pipe is 20 inches, which exceeds the minimum spacing to a structural discontinuity VDiameter Thick = 1.23 inch. The end of the pipe at the elbow is located at a vessel nozzle, thus it is rigid. The other end of the pipe is located more than four diameters from the patch.

7.3 Applied Loads Internal pressure of 1450 psi is applied to the pipe and patch.

5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803 - 803-648-7461 www.bechtns.com Richland, WA 99352 , 509-943-1625

ME-02-13-09 Rev. 1 RWCU Reqenerative Heat Exchanqer PiDinci ReDair Patch Analvsis Pacie 6 of 19 This analysis does not account for the following:

(a) Thermal radial expansion because the heat-up and cool-down are slow and the metal remains at uniform temperature.

(b) Longitudinal stress effects have minimal impact in this analysis. Thus, the following loading is not applied to this analysis: deadweight, thermal bending, and seismic.

8. Software ANSYS 14.0 is used to perform the analyses in this calculation report. This version of software has been validated and verified for use on the computer that ran the analysis.

Computer

Description:

NSWA-BLARSENDSK Computer ID: 2UA24523H0 Computer Type: HP Xeon E5-1620 3.6 GHz W7 Pro x64 The in-use test was performed satisfactorily to verify adequacy of the current computer configuration in which the final analysis runs were performed.

The input and output files used to perform the analysis and are provided in Attachment 1.

5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803 ° 803-648-7461 www.bechtns.com Richland, WA 99352

  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 7 of 19 References Codes,Standards& Guides 1.1 ASME B31.1 - 1971-W73 1.2 ASME PCC-2-2011 1.3 ASME Section II (2011a) 1.4 ASME Section VIII Division II(201 1a) 1.5 AWS D1.1-1996 1.6 ASME FFS-1 (2007)

ProjectSpecifications & Technical Documents 2.1 Columbia Generating Station Design Specification ProjectDrawings 3.1 None OtherReferences 4.1 BNSQA-ANS-14.0 Revision 2, Software Verification Test Results for ANSYS 4.2 Blodgett, Omer W., Design of Weldments. James F. Lincoln Arc Welding Foundation, August 1976 4.3 Blodgett, Omer W., Design of Welded Structures, James F. Lincoln Arc Welding Foundation, 1966 4.4 Code Data Report Form N1 General Electric Company for RWCU-HX-1A, 1B, 1C.

5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803 . 803-648-7461 www.bechtns.com Richland, WA 99352

  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 8 of 19 Tables Table 1 - ASME VIII Div.2 Section 5.2.2 Stress Resufts Stress Results: Maximum Membrane Component Stress Intensity (psi) '(1.OS)YAllow'able (psi) D/C Pipe 11,903 15,000 0.79 Patch Pipe 6,679 15,000 0.45 Stress Results:*Maximum Membrane +-Bending Component Stress Intensity (psi) (1.5S)A*, bl6ie(psi) D/C Pipe 20,526 22,500 0.91 Patch Pipe 21,378 22,500 0.95 Notes:

Pipe allowable stress from ASME B31.1-1971 (Ref. 1.1)

ASTM A106 Grade B = 15 ksi @ 6000F.

5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352, 509-943-1625

ME-02-13.09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 9 of 19 Figures k , o 01.

Figure 1 - Pipe Model with Patch Size and Cut-out Geometry I

~~tmms - =

AN

-p atoa = )':125 AMP 4 201~

07:06:47 w~ui 4 O "-) 45 s Figure 2- ANSYS Pipe Model with Boundary Constraints 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803 , 803-648-7461 www.bechtns.com Richland, WA 99352

  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Paqe 10 of 19 I I*UDiI*ItpZ Suinei I5. A T'/I* Ill 4. = 20IRGOsaI). i PP4: 2010 01 07:07-02 Figure 3 - ANSYS Pipe Model ftfu"inm"Lij AN twaske0 Ninal). 40PtA 07:100 07100

-0 VD0 no NO1 X00 10 X Figure 4 - Weld Profile 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352
  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Paoe 11 of 19 I0120L ,izt "OLACmm at K2S)-Aw UTK-4. Z=Xt'$*e ULM~); 1450 psi APO 4 2013 I= -1 ami -. )003" 47S. 8 017. 62 55~54.34 009S.016 10633.

17

.6 4266." 4*25.7 "64.42 11903.1 Figure 5 - Membrane Stress Intensity of Existing Pipe (Nominal with 1 X 3 Cut-out) fedit agineeriag AN So 1) 1 6 p., APO 4 2013 S~i 1 4 07-:04-26 13*7. 9 5640.$2a 093.73 14144.4 1399.S1 3514.37 T770. 2 12020.2 1$273.1 20526 Figure 6 - Membrane and Bending Stress Intensity of Existing Pipe (Nominal with 1 X3 Cut-out) 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352 , 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Paae 12 of 19 I Pipeft atMbrU 35 ~ AN STIEF1 4' ~ea~

S Uin I)1 psi A" 4 2011 07:09:08 Sn. -1 SINT iAV~$

ZMi .003466 smi -205k26 1307.91 "60.42 9991-7-t 14141.1 16199.S 3514.31 7707.20 12M2.2 1$273.1 20526 Figure 7 - Maximum Location of Membrane and Bending Stress Intensity of Existing Pipe (Nominal with 1"X3" Cut-out)

J I

II

-ipe atch 52S' 4'Simse $0 ULM'; 140 P.,A An 44kX 6 M3 07.0:0G:4 5fl -1 SIWT WS)4 129K:.0046S sot 11"7.$l mix 10514.5 Y

I 5Z0L.O1 9015.71 12294.6 16"3.5 3294."' 7104.75 10922.7 147365. It530.5 Figure 8 - Maximum Location of Membrane and Bending Stress Intensity of Existing Pipe with Stress Concentration removed (Nominal with 1"X3"Cut-out) 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352
  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 13 of 19 MESA. SOLUTION Mlt Raginseriwz--9u 4 AM 042013 114K:.003167 741.127 20 92.f 34W02.2 4723.39 623. M 1436.9P2 27?47.51 4058. 1 5368. fi 6079.211 Figure 9 - Membrane Stress Intensity of 1/2"Plate adft; £uglmczh (IS 5.25-4' Sebeftia 60 (3afinaI). 1450 Pat AN 4 M3u S79P.107*07:$2 STY? 1AW1 REX :.003167 UU .1348.51 a~

Y 14.53305.92 724.06 16 104.L2342.2 W 1316*60.4 9M 21374.3 Figure 10 - Membrane and Bending Stress Intensity of 1/2' Plate 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803 *803-648-7461 www.bechtns.com Richland, WA 99352 . 509-943-1625

ME-02-13-09 Rev. 1 RWCU Reqenerative Heat Exchanqer Pipingq Repair Patch Analysis Paqe 14 of 19 Appendix A - Evaluation of Weld A Maximum Fillet Welded Patch Analysis at one location Weld Analysis of 5116" (0.313") Fillet Weld between the Elbow/Pipe Patch and the existing Pipe.

Maximum ANSYS Weld Loads at Elements 566(FX).

610 (FY), and 654(FZ), Maximum Location is shown in Red:

FX = 2401bf KO KO KOKO FY:- IlIllbf 'CO KO FZ  :=- 12791bf gO KO KO Weld Loads are in the Global Coordinate 'CO .Ko System (GCS). Maximum weld load at one KO location occurs at weld elements 566. 610, 'CO and 654 extracted from ANSYS. The weld KO was modeled by using springs to join the 'CO nodes of the two parts along the weld path. KO

'CO The two parts are shell elements with a one inch mesh and mid-side nodes. Spring KO KO forces were extracted from ANSYS with the 'CO KO minimum node spacing used in the KKO HO calculation to determine the weld loading in C KO pounds per inch. OKOgoKo go Ko go"

' Ko O

KCO'O O'C O'O Node-weld := 035in Minimum Node Spacing FM :- 70DDOpsi Weld rod strength SyAi06 .- 27225psi Yield strength of A106 Grade 8 Carbon Steel Wkl~flow :- 0.3TEF - 21OO0psi A106 Carbon Steel weld rod ultimate strength weld allowable WB-Allow := 0.4-SyAI06 = lo89opsi A106 Gr. B Carbon Steel base material yield strength weld allowable Fweld _ J( 1 Nod 2+

lNode-weld)

FY 2 +(331.6- )

Node weld ) in Load per unit length Fweld Fwdd

_0.

rleg S:=0.707W.*low 025

- 0.25 . (3 i e_..b -- ISBAIlow Peak Stress occurs at this weld element location.

5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352
  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 15 of 19 A Blodgett Fillet Welded Patch Analysis Weld Arnalyal of51 (13WP ) F~le Weld hebowafflp Pam and the eaiduin PIPe.

Oewen Absoi sum dANSYS Wild Loads Fweldx :- 81411% Force kq91w X-axs KO Id KO I Fweldy:- 89391% Force iong hw Y-axis k Koc Fwsldz .- 19T761b Force aln Ow Z-.a X0 Weld Loads are in1w Globa C*wor Symm (GCS). The M *mm weld o KQ load isotaned by abss m iulo*in offt troes ex*adsd from ANSYS CO No COMBIN4 elem Thewlddwas nodeed by uag COMBIN14 *e*eIN go lo pin the nodes of11 bw opris etng lh weld p*. K go WWel walayai for Mbtngeala be weld g go Mated Propues and AkowU" Skesses K X0

.- 27225pst Yield en br A106 Gr Bat 575 "F KO to to KO Ice T

to KOKO SFR -- 000PS e thn Fler rod 7OXX onoW mal e Ko I Iu:- 0.3 SO* FaSDr WWedb noIDM dlanSle *re0l of i melOW.

I:b-- 0.4 Say bcW aqWd i yield s1rmngdi d base mawiah wel:Alow "- Ifu.SFR - 21000ps Alowal, show sh'ess on ehdce weld area.

baseAl *w:- fb.Sy* - 108901si Akwab b*se or compIsswO sliess on e tw wld area Weld Sec*in Proper:es Ws~:--rn Minonum weldzsin bbe evaksad. b T6 d :-3.5m Weld liew spewq d Lweld :- (b

  • d) - 8.75.n Towweww*n~ SY~

Fwell  :- lf -.22~60. - Andbad Lweld in FweW . ~1277~-MSerla FweWd:- Fvedx_775.-INSherload 2-b in Fweld  :-Fweldl 2+ Fweld2 Fweld3 - 2709.-

In Check Weld shear Check basesha wed- FwWb - oieem WO-0.707-weldAIw .-. 8-nWd -bs~o 2i max(.we~dweIdb) - 0.249.n <0.313in.Iaereba5I16inM.Ue.ld(

5224 Woodside Executive Court Becht Nudear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352
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ME-02-13-09 Rev. 1 RWCU Re~qenerative Heat Exchancler Pil~ina Repair Patch Analysis Pacoe 16 of 19 Element bads from ANSYS. The summaon of le absolule vakles meach direcion w be appied lo Ihe weld.

Elem x Elem y Elem z (FX) (FY) (FZ) abs(FX) abs(FY) abs(Fz) 558 602 646 31.35 -26.56 -189.82 31.35 26.56 189.82 560 604 648 -215.53 -358.84 -651 215.53 358.84 651 562 606 650 -144.54 -136.05 -483.07 144.54 136.05 483.07 563 607 651 -253.24 -301.46 -1109.37 253.24 301.46 1109.37 565 609 653 -165.28 -107.64 -628.57 165.28 107.64 628-57 566 610 654 -23957 -110.73 -1278.63 239.57 110.73 1278.63 568 612 656 -168.67 1.68 -202.82 168.67 1.68 202.82 571 615 659 -284.62 114.01 -669.07 284.62 114.01 669.07 569 613 657 -163.1 52.71 -540.38 163.2 52.71 540.38 570 614 658 -268.95 225.35 -796.04 268.95 225.35 796.04 567 611 655 -26.64 90.44 -1221.91 26.64 90.44 1221.91 572 616 660 -121.53 263.14 -214.13 121.53 263.14 214.13 573 617 661 -90.92 75.49 -191.19 90.92 75.49 191.19 575 619 663 -140.09 164-56 -454.93 140.09 164.56 454.93 577 621 665 -31.54 102.63 -215.24 31.54 102.63 215.24 578 622 666 -48.51 246 -408.08 48512 246 408.08 580 624 668 -38.26 140.28 -186.98 38.26 140.28 186.98 582 626 670 -93.85 326.73 -347.21 93.85 326.73 347.21 584 628 672 -51.55 188.58 -189.37 5155 188.58 189.37 586 630 674 -94.35 380.29 -362.32 94.35 380.29 362.32 588 632 676 0.45 200.15 -197.61 0.45 200.15 197.61 590 634 678 -38.57 590.34 -201.36 38.57 590.34 201.36 599 643 687 -48.88 178.44 -280.66 48.88 178.44 280.66 601 645 689 -440.6 274.81 -686.1 440.6 274.81 686.1 597 641 685 -232.99 55.48 -439.46 232.99 55.48 439.46 600 644 688 -577.64 97.91 -937.12 577.64 97.91 937.12 598 642 686 -285.08 4.98 -500.11 285.08 4.98 500.11 596 640 684 -572-4 -101.56 -923.63 572.4 101.56 923.63 595 639 683 -279.63 -71.68 -450.7 279.63 71.68 450.7 594 638 682 -468.99 -181.47 -901.97 468.99 181.47 901.97 593 637 681 -212.06 -74.98 -397.22 212.06 74.98 397.22 592 636 680 -413.66 -293.84 -836.3 413.66 293.84 836.3 591 635 679 1.57 -219.68 -373.49 1.57 219.68 373.49 589 633 677 -224.13 -705.17 -416.02 224.13 705.17 416.02 587 631 675 -138.51 -247.07 -246.91 138.51 247.07 246.91 585 629 673 -417.35 -528.99 -312.12 417.35 528.99 312.12 583 627 671 -195.65 -275.16 -115.07 195.65 275.16 115.07 581 625 669 -266.51 -470.97 -156.73 266.51 470.97 156.73 579 623 667 -124.04 -226.95 -92.98 124.04 226.95 92.98 576 620 664 -105.71 -299.63 -277.17 105.71 299".63 277.17 574 618 662 -75.32 -104.68 -144.3 75.32 104.68 144.3 564 608 652 -220.6 -164.36 -268.12 220.6 164.36 268.12 561 605 649 -69.07 -50.73 -132.81 69.07 50.73 132.81 559 603 647 -59.49 -106.88 -147.68 59.49 106.88 147.68 SUM 8140.99 8939.08 19775.77 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352
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ME-02-13-09 Rev. 1 RWCU Reaenerative Heat Exchanger PiDing ReDair Patch Analvsis Paoe 17 of 19 Attachment 1 - Computer Files Input Files Input File Name Description PipeShell.db Pipe ANSYS database file.

post26.inp Post-Processing input file.

postp-joints.inp Post-Processing input file used to list the loads at welds.

Output Files Output File Name Description BNS-JointLoads_1_Maxs.out Lists the maximum weld loads in X-Direction.

BNS-JointLoads_1_ALL-LOAD- Lists the weld loads in X-Direction.at each time step.

STEPS.out BNS-JointLoads_2_Maxs.out Lists the maximum weld loads in Y-Direction.

BNS-JointLoads_2_ALL-LOAD- Lists the weld loads in Y-Direction.at each time step.

STEPS.out BNS-JointLoads 3_Maxs.out Lists the maximum weld loads in Z-Direction.

BNS-JointLoads_3_ALL-LOAD- Lists the weld loads in Z-Direction.at each time step.

STEPS.out The following input/output files are electronically provided as part of this attachment.

Computer Files Directory Listing Date Time Size File Name Volume in drive C is NSWA-BLarsenDsk 2TB Volume Serial Number is 921A-6C5D Directory of C:\Users\blarsen\Desktop\Elbow\Updated\ENW Files 04/02/2013 09:36 PM 285 Post26.inp 01/02/2013 12:47 PM 16,996 postp_joints.inp 04/04/2013 07:07 AM 4,743 BNS-JointLoads 1 ALL-LOAD-STEPS.out 04/04/2013 07:07 AM 2,228 BNS-JointLoads 1 Maxs.out 04/04/2013 07:07 AM 4,743 BNS-JointLoads 2 ALL-LOAD-STEPS.out 04/04/2013 07:07 AM 2,228 BNS-JointLoads 2 Maxs.out 04/04/2013 07:07 AM 4,743 BNS-JointLoads 3 ALL-LOAD-STEPS.out 04/04/2013 07:07 AM 2,228 BNS-JointLoads 3 Maxs.out 04/04/2013 07:10 AM 6,225,920 PipeShell.db 9 File(s) 6,264,114 bytes Total Files Listed:

9 File(s) 6,264,114 bytes 0 Dir(s) 1,428,543,885,312 bytes free 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352
  • 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 18 of 19 Calculation Verification Verifier: Ken Stoops /*' -' 4/4/2013 Verification Method Verification Scope IZ Line-by-Line Review Entire calculation.

El Alternate Calculations Line-by-Line Review Checklist Verification Attribute Yes NIA NoV1) 1 Coversheet complete and page count correct? X 2 Revision is alpha ifthere are open items? X 3 Calculation headers complete? X 4 Attachments are listed and included? X 5 Calculation objective clearly stated? X 6 Scope (boundaries) of calculation clearly stated? X 7 Open items clearly stated? X 8 Design criteria clear and complete? X 9 Input drawings and specifications listed in references with revision or edition number? X 10 Applicable codes, standards listed in references with revision or edition number? X 11 Input parameters are in accordance with references, reasonable or conservative? X 12 Geometry, sizes, properties are in accordance with references or conservative? X 13 Input loads and load combinations in accordance with references or conservatives? X 14 Formulas and software used appropriate and within their range of applicability? X 15 Software version is consistent with V&V, and valid for the computer used? X 16 Results clearly stated, and reasonable? x Notes:

(1) If'No" is selected then an explanation is provided inthe following verifier comments.

Verifier Comments (IfNecessary)

  1. Location Comment 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803
  • 803-648-7461 www.bechtns.com Richland, WA 99352 - 509-943-1625

ME-02-13-09 Rev. 1 RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis Page 19 of 19 Record of Revisions Revision Date Description of Changes 0 04/03/2013 Initial issue.

1 04/04/2013 Updated Weld Allowable 5224 Woodside Executive Court Becht Nuclear Services 114 Columbia Point Drive, Suite A Aiken, SC 29803

  • 803-648-7461 www.bechtns.com Richland, WA 99352
  • 509-943-1625
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