NRC 2005-0110, Request for Withholding of Proprietary Information Form Public Disclosure

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Request for Withholding of Proprietary Information Form Public Disclosure
ML052620168
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 08/26/2005
From: Koehl D
Nuclear Management Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
NRC 2005-0110
Download: ML052620168 (33)
v • d • e


Text

No N Committed to Nuclear Excelln Point Beach Nuclear Plant Operated by Nuclear Management Company, LLC August 26, 2005 NRC 2005-0110 10 CFR 2.390 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Point Beach Nuclear Plant, Units 1 and 2 Dockets 50-266 and 50-301 License Nos. DPR-24 and DPR-27 Request for Withholding of ProprietarV Information from Public Disclosure

Reference:

Letter from NMC to NRC dated July 24, 2005 (NRC 2005-0094)

In the reference, Nuclear Management Company, LLC (NMC), submitted a copy of Westinghouse Calculation Note Number CN-RCDA-05-68, Revision 2, "Plastic Analysis of Point Beach Reactor Coolant Piping for Reactor Vessel Head Drop", dated July 18, 2005 (Proprietary). This document was provided pursuant to a proposed amendment that would support a change to the PBNP Final Safety Analysis Report (FSAR) regarding control of heavy loads.

This document was subsequently reclassified as a non-proprietary document by Westinghouse Electric Company ("Westinghouse"), the owner of the information. This letter submits the reclassified non-proprietary document. As such, the NRC may release the enclosed document for public disclosure.

This letter contains no new commitments and no revisions to existing commitments.

I declare under penalty of perjury that the foregoing is true and correct. Executed on August 26, 2005.

Dennis L. Koehl Site Vice-President, Point Beach Nuclear Plant Nuclear Management Company, LLC 6590 Nuclear Road

  • Two Rivers, Wisconsin 54241 Anal Telephone: 920.755.2321

Document Control Desk Page 2 Enclosure cc: Project Manager, Point Beach Nuclear Plant, USNRC Regional Administrator, Region Ill, USNRC Resident Inspector, Point Beach Nuclear Plant, USNRC

ENCLOSURE WESTINGHOUSE CALCULATION NOTE NUMBER CN-RCDA-05-68-NP, REVISION 2, "PLASTIC ANALYSIS OF POINT BEACH REACTOR COOLANT PIPING FOR REACTOR VESSEL HEAD DROP" (NON-PROPRIETARY)

(30 pages follow)

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Shop Order Number Charge Number Page CN-RCDA-05-68-NP 2 140 115272 0010 1 l Project Releasable (YIN) Open Items (YIN) Files Attached (YIN) Total No. Pages Point Beach RVH Drop Y N I Y 30

Title:

Plastic Analysis of Point Beach Reactor Coolant Piping for Reactor Vessel Head Drop Author(s) Name(s) Signature / Date For Pages David H. Roarty ElectronlicallyApproved* All Verifier(s) Name(s) Signature / Date For Pages George Demetri ElectronlcallyApproved* All Manager Name Signature I Date John Ghergurovich Electronlcally Approved*

This document has been re-classified as a non-proprietary document in July of 2005. There were no content changes as a result of this reclassification.

  • Official Record Electronically Approved In EDMS 2000 0 2005 Westinghouse Electric Company LLC All Rights Reserved l( Westinghouse C:\Documentum\Checkout\CN-RCDA-05-68-NP1 .doc Word Version 4.2 1

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 2 I Record of Revisions Rev Date Revision Description 0 6/20105 Original Issue 1 6120/05 The following changes were made in response to customer comments:

- Revised wording in Section 1.2

- Revised wording in Section 2.0 and Table 2-1

- Revised wording in Section 6.1 to clarify the basis for 6.5 inch case analyzed

- Added sentence to 6.3.1 to discuss 50 degree elbow mesh

- Revised wording of 6.3.3 2 7/12/05 Added drawings to extend applicability to Unit 1, references 10 and 11. Revise applicability and background (Section 1), results (Section 2), method discussion (Section 6.1) to reflect Unit 1. Added piping isometric for Unit I (ref. 12 and Appendix B) and referred to isometric in assumption I (Section 3).

Corrected typo in Section 2 which referred to Stress and Strain in Table (first sentence, second paragraph). Added Rev. 5 to reference 3 per e-mail in App. B. Corrected typo in Section 6.2.

4 4 4 4 4 4 4 4 4 4 4 4 4 4

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Westinghouse Non-Proprietary Class 3 WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 3 l Table of Contents 1.0 Introduction ................................................. 5 1.1 Background / Purpose ................................................. 5 1.2 Limits of Applicability ................................................. 5 2.0 Summary of Results and Conclusions ......... ........................................ 6 3.0 Assumptions and Open Items ................................................. 7 3.1 Discussion of Major Assumptions .................................................7 3.2 Open Items ................................................. 7 4.0 Acceptance Criteria ................... 8 5.0 Computer Codes Used In Calculation ................................................. 9 6.0 Calculations ................................................ .. 10 6.1 Method Discussion ................................................ 10 6.2 Input ................................................. 11 6.2.1 Material Properties ................................................ 11 6.2.2 Dimensions and ANSYS Real Constants ................................................ 12 6.3 Evaluations, Analysis, Detailed Calculations and Results . ...............................................

14 6.3.1 ANSYS Model ................................................ 14 6.3.2 Results............................ 15 6.3.3 Conclusions ............................ 21 7.0 References .............................. 22 Appendix A: Computer Run Logs ............................. 23 Appendix B: Supporting Documentation ............................. 25 Checklist A: Proprietary Class Statement Checklist ....... .............................. 27 Checklist B: Calculation Note Methodology Checklist ................ ..................... 28 Checklist C: Verification Methodology Checklist .. ................................... 29 Additional Verifier's Comments ..................................... . 30 Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 4 I List of Tables Table 2-1: Summary of Results ........................................................................ 6 Table 5-1: Summary of Computer Codes Used in Calculation ................................................................. 9 Table 6-1: Stress Intensity and von Mises Strain Results of Plastic Analysis inch Displacement ....16 Table 6-2: Stress Intensity and von Mises Strain Results - Additional Cases ........................................ 20 List of Figures Figure 6-1: Illustration of Stress versus Strain Curve used for Analysis ................................................. 12 Figure 6-2: Layout of Hot and Cold Leg Piping (Reference 3*) .............................................................. 13 Figure 6-3: Hot Leg ANSYS Model ....................................................................... 14 Figure 6-4: Cold Leg ANSYS Model ....................................................................... 15 Figure 6-5: Maximum Stress Intensity (psi) Plot - Cold Leg with Max. Properties ................................. 17 Figure 6-6: Maximum von Mises Strain Plot - Cold Leg with Min. Properties ........................................ 18 Figure 6-7: Maximum Stress Intensity (psi) Plot - Cold Leg with Min. Properties - 6.5-inch Displacement ....................................................................... 19 Figure 6-8: Maximum von Mises Strain Plot - Cold Leg with Min. Properties - 6.5-inch Displacement.20 Figure B-1: Isometric of Point Beach Unit 1 Reactor Coolant Pipes ....................................................... 26 Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 5 1.0 Introduction

1.1 BACKGROUND

/ PURPOSE The purpose of this calculation is to perform a plastic analysis of the Point Beach Units I and 2 Reactor Coolant Main Loop Piping, for a postulated downward vertical displacement of up to 6.5 inches at the Reactor Vessel nozzles. This postulated displacement Is conjectured to occur due to a drop of the reactor vessel head onto the reactor vessel during installation or removal. It should be noted that the 6.5-inch displacement value is not demonstrated to be the actual displacement that would be caused due to a reactor vessel head drop. It is a conjectured value, and the purpose of this analysis is to analyze the effects of such a displacement.

It should be noted that this is not a rigorous ASME Code analysis. Allowable limits, which are discussed in Section 4 and obtained from the ASME Code Appendix F, are created as reasonable limits that can be used to investigate the behavior of the Hot and Cold leg piping due to this postulated displacement.

Revision 2 was generated to document the applicability of this analysis to Unit 1.

This calculation note was prepared according to Westinghouse Procedure WP 4.5.

1.2 LIMITS OF APPLICABILITY This Calculation Note is applicable to Point Beach Units 1 and 2. Based on review of references 10 and I1, the Unit 1 hot leg and cold leg geometries are essentially identical to Unit 2, to a degree sufficient to justify the applicability of this analysis to Unit 1. Other relevant parameters, such as material properties, also cover Unit 1 and Unit 2.

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 6 l I 2.0 Summary of Results and Conclusions The results of this analysis show that the computed maximum Stress Intensity are less than the allowable values that are listed in Section 4. Therefore, it can be concluded that the structural integrity of the Point Beach Units 1and 2 Hot and Cold Leg piping is maintained after the I postulated 6.5-inch displacement due to a Reactor Vessel Head drop.

Table 2-1 summarizes the stress results. The explanation of the ANSYS runs used to obtain I these results can be found in Section 6. The allowable values listed in the Table below are discussed in Section 4. As this Table indicates, the cold leg is more severely stressed than the hot leg and therefore controlling. Reviewing the results (for 4" case) for maximum versus minimum assumed properties indicates that the stress ratio is essentially the same. Therefore, the 6.5 inch displacement case is only evaluated for the cold leg minimum property case. It is noted that the results for the 6.5 inch displacement case are well below the 0.90Su maximum stress limit. It can be seen from Table 2-1 that the 4 inch drop displacement results are less than the more conservative general membrane stress limit of 0.70Su. Therefore, it is judged that results demonstrate compliance with the intent of the ASME Appendix F limits.

Table 2-1: Summary of Results Pipe Case Material Applied Actual Ultimate Actual/Su 2 Property Displacement Stress Tensile Case' (inch) Intensity Strength -Su (ksl) (ksi)

Hot Leg Maximum 4.0 45.6 90.0 0.51 Hot Leg Minimum 4.0 34.7 70.0 0.50 Cold Leg Maximum 4.0 61.1 90.0 0.68 Cold Leg Minimum 4.0 47.2 70.0 0.67 Cold Leg Minimum 6.5 54.0 70.0 0.77 Note 1: Please see Section 6.1 and 6.2 for an explanation of the Material Property cases.

Note 2: Please see Section 4 for a discussion of the allowable limit Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision lPage CN-RCDA-05-68-NP 2 l 7 I 3.0 Assumptions and Open Items 3.1 DISCUSSION OF MAJOR ASSUMPTIONS The following assumptions are used in this Calculation Note.

1. The auxiliary piping is assumed to offer minimum vertical constraint. This is confirmed by review of References 3 and 4 for Unit 2 and Reference 12 for Unit 1. The only potential restraint is the whip restraint structure shown in Reference 4 (Section D), but this offers only limited restraint of lateral deflection for the cold leg which is not applicable to this problem.
2. The applied displacement is assumed to be a static vertical displacement at the reactor vessel nozzle supports. It is also assumed that the dynamic effects from the drop will not significantly effect the damage assessment and the maximum stresses that are obtained from this model. This is a reasonable assumption given this is Intended to be an assessment of the piping integrity.
3. The finite element model end points are assumed to be completely fixed except for the applied displacement. These points include for hot leg: the safe-end region of the reactor vessel outlet nozzle and steam generator inlet nozzle and for the cold leg: the reactor vessel inlet nozzle and the reactor coolant pump outlet nozzle. This is conservative with respect to the prediction of the maximum stresses.

3.2 OPEN ITEMS This Calculation Note contains no open Items.

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Westinghouse Non-Proprietary Class 3 WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision lPage CN-RCDA-05-68-NP 2 l 8 I 4.0 Acceptance Criteria The following Acceptance Criteria are reasonable limits that can be used to measure the behavior and structural integrity of the Hot and Cold legs due to the postulated displacement.

These Acceptance Criteria are not to be taken as a full ASME Code analysis.

Section III, Appendix F, paragraph F-1340, of the 1998 Edition of the ASME Code (Reference 5) defines allowable limits when using plastic system analysis. An acceptable method of component analysis is plastic analysis, which has been used in this case. The limits for plastic component analysis are provided in F1341.2.

The following primary stress limits are provided:

(a) the general primary membrane stress intensity Pm shall not exceed the greater of 0.70Su and Sy + (1/3(Su-Sy). For the selected controlling case in which Sy = 30 ksi and Su = 70 ksi, the 0.70Su allowable (49 ksi) controls.

(b) the maximum primary stress intensity at any location shall not exceed 0.90Su.

(c) the average primary shear across a section loaded in pure shear shall not exceed 0.42Su.

Some interpretation is required to properly assign the applicable allowable to a specific finite element derived stress. First, it is clear that the shear limit (c) Is not applicable since the loading is bending controlled and not pure shear. The general primary membrane stress intensity (a)is a conservative limit to consider. However, this limit is applicable to the average stress across the pipe cross-section, such as would occur from an axial load or a pressure load. For this case, the average stress across the pipe section is insignificant as both pressure and axial loads are insignificant. The maximum primary stress intensity at any location needs to be defined based on the Intent of a primary stress. Per NB-3213.8, uPrimary stress is any normal or shear stress developed by an imposed loading which is necessary to satisfy the laws of equilibrium of external and internal forces and moments... Primary stress is divided into general and local categories... (a) general membrane stress in a circular cylindrical ... shell due to internal pressure". Further, per NB-3213.6, "Membrane stress Is the component of normal stress which is uniformly distributed and equal to the average value of stress across the thickness of the section under consideration". In this case, the section is the entire pipe cross-section, since the structural integrity of the pipe is dependent on the entire section not a "local" section through the wall at a particular circumferential angle.

The maximum stress intensity provided by the finite element analysis reflects the membrane and bending stress obtained for the pipe section. This is a product of the beam formulation used in the pipe elements. In addition, the elbow element has local stress intensification factors which are applied to account the local, through-wall bending effects which occur in an elbow.

The maximum stress intensity from pipe and elbow elements then reflect stresses which are very similar in intent to the maximum primary stresses referred to in F-1341.2(b). Use of any stress more localized than this value would only be objectionable from a fatigue standpoint and therefore the membrane plus bending stress intensity from the finite element results is the only stress which could be applied to the 0.90Su stress limit for piping elements.

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 9 I 5.0 Computer Codes Used In Calculation Table 5-1: Summary of Computer Codes Used in Calculation Code Code Code Configuration Basis (or reference) that supports use of code No. Name Ver. Control Reference In current calculation 1 ANSYS 8.1 Ref. 6 General purpose finite element code. This Code has been used for elastic-plastic finite element analysis in the past and this application is a similar use of the Code.

5 =

12 13 14 10__ _

11 12 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

14_ _ _ _ _ _ _ _ _

15_ _ _ _ _ _ _ _ _

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Westinghouse Non-Proprietary Class 3 WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page l CN-RCDA-05-68-NP 2 l 10 6.0 Calculations 6.1 METHOD DISCUSSION This analysis Is performed to determine the effect of a 4 and 6.5-inch vertical displacement applied on the reactor vessel nozzle ends of the Point Beach Units 1 and 2 Hot and Cold leg piping, due to a reactor vessel head drop. The analysis is done using relatively simple finite element models of the Hot Leg and Cold Leg, including non-linear material properties. The displacement is assumed to be applied as a vertical static displacement at the reactor vessel nozzle supports. The Hot Leg pipe is modeled as a 13-foot (based on shop spool piece drawings) straight horizontal run from the vessel outlet nozzle to the steam generator, including the inlet elbow. The cold leg pipe Is modeled as a 26-degree horizontal elbow attached to the vessel inlet nozzle with a 9.5-foot (based on shop spool piece drawings) straight run to the reactor coolant pump outlet nozzle.

For each pipe, two ANSYS runs are made: one which assumes lower-bound values of Yield Strength and Ultimate Strength and another that assumes upper-bound values. Based on the results from the 4 Inch analysis, the 6.5 inch case is analyzed only for the cold leg, minimum properties case (maximum and minimum property cases yield essentially the same results).

The intent of considering these two material strength cases is only to bound the effect of mechanical strength. The plastic material behavior is characterized considering kinematic strain hardening.

The pipe is modeled using the ANSYS PIPE20 and PIPE60 elements. The PIPE20 element is a plastic straight pipe element and the PIPE60 element is a plastic pipe elbow element. These elements are sufficient to obtain an assessment of the general maximum strain (and stress) level in the pipe for the given loadings. Some higher strains (and stresses) could occur locally at discontinuities not included Inthe model (due to strain concentration), but these would only be a concern for fatigue type cracking or small local surface cracks.

The critical result obtained from the analysis is the maximum stress intensity for comparison to the ASME Code Section 1II,Appendix F (Reference 5), which provides a limit of 0.9Su for Maximum Primary Stress (see Section 4 for more details on the allowable).

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision lPage CN-RCDA-05-68-NP 2 l 11 6.2 INPUT Vertical downward displacements of 4 and 6.5 inches are applied as static loads in the ANSYS model at the reactor vessel nozzle ends of the Hot and Cold leg piping. The steam generator (hot leg) and reactor coolant pump (cold leg) nozzles are assumed to be fixed points in the model.

6.2.1 Material Properties As mentioned previously, Lower- and Upper-bound material properties are chosen for input to this analysis to bound the effect of mechanical strength. The straight section of the Hot and Cold Leg pipes are constructed from ASTM A-376 TP316, and the Hot and Cold Leg elbows are constructed from ASTM A-351 CF8M (Reference 8).

1. Upper bound yield and tensile strength (labeled as Maximum Properties)

Sy = 40 ksi, Su = 90 ksi.

2. Lower bound yield and tensile strength (labeled as Minimum Properties)

SY = 30 ksi, S, = 70 ksi.

Material Properties from Reference 9 were examined for the above mentioned materials. It was found that ASTM A-376 TP316 (SA-376 TP316) has a Yield Strength of 30 ksi and an Ultimate Strength of 75 ksi at 1000F. ASTM A-351 CF8M (SA-351 CF8M) was found to have a Yield Strength of 30 ksi and an Ultimate Strength of 70 ksi at 1000 F. Therefore, the Minimum Properties case most closely models the true properties of the Hot and Cold Leg piping elbows, and is slightly conservative with respect to the Hot and Cold Leg straight pipe sections.

Additionally, a Young's Modulus of 28.3x106 psi (Reference 9) and a Poisson's Ratio of 0.31 are used in the ANSYS analysis.

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision lPage CN-RCDA-05-68-NP 2 l 12 I The material behavior is considered using a multi-point input stress/strain representation. A non-linear stress versus strain curve (piecewise linear) is input and used in this analysis. Linear properties are used up to 95% of Yield Strength. The next linear section of the curve connects the previous point to a point at 100% Yield Strength with a 0.2% Yield offset. The final linear segment of the curve is from the previous point to Ultimate Strength at 40% strain. The following figure illustrates this curve in generic terms.

Su- _ _ _ _ _ _ _ _ _ _ _ _ _ _

sy- _-

0.95 Sy- - - K W

0 0.2 £ (% Strain) 40I>

Figure 6-1: Illustration of Stress versus Strain Curve used for Analysis 6.2.2 Dimensions and ANSYS Real Constants Dimensions for the ANSYS Models are obtained from References 1, 2, and 3. The pipe geometric properties are as follows:

Hot Leg: ID = 29 inches, Thickness = 2.5 inches.

Cold Leg: ID = 27.5 inches, Thickness = 2.375 inches.

The Hot and Cold Leg pipes are modeled from the nozzle on the reactor vessel to the nozzle on the steam generator (hot leg) or reactor coolant pump (cold leg). The following figure illustrates the pipe layout. It is taken from Reference 3.

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 13 I Figure 6-2: Layout of Hot and Cold Leg Piping (Reference 3*)

  • for schematic illustration only, not used for dimensions Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number l Revision Page CN-RCDA-05-68-NP 2 14 I 6.3 EVALUATIONS, ANALYSIS, DETAILED CALCULATIONS AND RESULTS 6.3.1 ANSYS Model The following Figures illustrate the completed ANSYS Models. The figures reflect the use of a plotting option in Ansys which simulates the actual pipe size. The finite element is a "line" type element, similar to beam elements. The elbows are modeled using a single elbow element, which is an acceptable practice for elbows with less than a 45 degree angle. The controlling elbow (cold leg) has only a 26 degree angle. The hot leg elbow, which has a 50 degree angle, is acceptable to be modeled as a single element based on the available margin and small effect associated with a mesh refinement.

1 A\NSYS ELEMENTS JUN 13 2005 U 17:27:47 ROT Figure 6-3: Hot Leg ANSYS Model Word Version 4.2

Westinghouse Non-Proprietary Class 3 WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP R i 2 15 I 1 AISYS Cold Leg with Elbow, Max Properties, Disp.=4 in.

Figure 6-4: Cold Leg ANSYS Model 6.3.2 Results The following Table lists the results of the four analysis runs. These results are obtained graphically, by plotting the von Mises Strain and Stress Intensity. These results can be recreated by running the ANSYS files, which are listed in Appendix A and attached in EDMS.

Note, the strain is reported for general information only and is not intended to be applied to a strain limit.

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC l Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 16 I Table 6-1: Stress Intensity and von Mises Strain Results of Plastic Analysis inch Displacement Pipe Case Material Computer Run Maximum Total von Maximum Normalized Property Case (App. A) Mises Strain (%) Stress Intensity (ksi)

Hot Leg Maximum 1 7.29 45.6 Hot Leg Minimum 2 5.94 34.7 Cold Leg Maximum 3 16.37 61.1 Cold Leg Minimum 4 17.21 47.2 Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 17 I 6.3.2.1 4-Inch Displacement Cases I The following Figures illustrate the maximum Stress Intensity and the maximum strain.

ANSYS 8.1A1 JUN 15 2005 10:04:04 ELEMENT SOLUTION STEP=1 SUB =79 TIME=1 SINT (NOAVG)

PowerGraphics SMX =61081 241.99 7002 13762 20522 S27282 m34042 40802 47562 54322 61081 Cold Leg with Elbow, Max Properties, Disp.=4 in.

Figure 6-5: Maximum Stress Intensity (psi) Plot - Cold Leg with Max. Properties Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 18 I ANSYS 8.1A1 JUN 15 2005 10:26:31 ELEMENT SOLUTION STEP=1 SUB =119 TIME=1 EPTOEQV (NOAVG)

PowerGraphics EFACET=1 DMX =4 SMN =.359E-04 SMX =.172088 i359E-04

.019153

.03827

.057387

.076504

.095621

.114737 E 1l133854

.152971

.172088 Cold Leg with Elbow, Min Properties, Disp.=4 in.

Figure 6-6: Maximum von Mises Strain Plot - Cold Leg with Min. Properties 6.3.2.2 Additional Case One additional run was made with a downward displacement of 6.5 inches, for the Cold Leg minimum-property case. The following Figures illustrate the maximum Stress Intensity and von Mises Strain for this case. This run Is made In Computer Run 5.

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Westinghouse Non-Proprietary Class 3 WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 19 ANSYS 8.lAl JUN 16 2005 09:24:01 ELEMENT SOLUTION STEP=1 SUB =157 TIME=1 SINT (NOAVG)

PowerGraphics SMX =54044 176.332 6162 12147 18132 24118 30103

___36088 42073 48059 54044 Cold Leg with Elbow, Min Properties, Disp.=6.5 in.

Figure 6-7: Maximum Stress Intensity (psi) Plot - Cold Leg with Min. Properties - 6.5-inch Displacement Word Version 4.2

I Westinghouse Non-Proprietary Class 3 WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 20 ANSYS 8.1A1 JUN 16 2005 09:25:38 ELEMENT SOLUTION STEP=1 SUB =157 TIME=1 EPTOEQV (NOAVG)

PowerGraphics EFACET=1 SMN =.707E-05 SMX =.258555

.707E-05

.028735

.057462

__.08619

.114917

.143645

.172372 EZI.2011

.229828

.258555 Cold Leg with Elbow, Min Properties, Disp.=6.5 in.

Figure 6-8: Maximum von Mises Strain Plot - Cold Leg with Min. Properties - 6.5-inch Displacement The results from the additional case is summarized in Table 6-2.

Table 6-2: Stress Intensity and von Mises Strain Results - Additional Cases Pipe Material Computer Run Applied Stress von Mises Case Property Case (App. A) I Displacement (in) Intensity (ksi) I Strain (%)

Cold Leg Minimum 5 6.5 54.0 25.86 Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 21 I 6.3.3 Conclusions Based on the evaluations performed, it is apparent that the Hot Leg and Cold Leg piping will maintain structural integrity for the postulated drop event with relatively minor distortions. All results from the postulated cases meet the Acceptance Criteria in Section 4. In addition, the 4 inch drop results meet the more restrictive general membrane stress limit of 0.7Su.

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number l Revision Page l CN-RCDA-05-68-NP 2 22 7.0 References

1. National Valve and Manufacturing Company Drawings WIS-B-2-F-131, 'Reactor Coolant Piping' and WIS-B-2-F-127, "Reactor Coolant Piping." (Hot Leg-Unit 2)
2. National Valve and Manufacturing Company Drawings WIS-B-1-F-130, 'Reactor Coolant Piping" and WIS-A-1-F-126, "Reactor Coolant Piping." (Cold Leg-Unit 2)
3. Bechtel Drawing P-258, Sht. 1, Rev. 5, 'Wisconsin Electric Power Company Point Beach Nuclear Plant- Piping Isometric Primary Coolant System Unit 2."
4. Bechtel Drawing C-325, Rev. 7, 'Containment Structure Biological Shield Liner Plate Penetrations."
5. ASME Boiler and Pressure Vessel Code, Section 11I, Appendix F, 1998 Edition (no Addenda).
6. Westinghouse Letter LTR-SST-04-44, Rev. 0, "Release of ANSYS 8.1 for XP, Solaris 8, HPUX 11.0, and HPUX 11.23," dated October 29, 2004.
7. not used
8. Westinghouse Report WCAP-14575-A, Rev. 0, "Aging Management Evaluation for Class 1 Piping and Associated Pressure Boundary Components," dated December, 2000.
9. ASME Boiler and Pressure Vessel Code,Section II, Part D, 1998 Edition (no Addenda).
10. National Valve and Manufacturing Company Drawings WEP-B-2-F-81, Rev 2 "Reactor Coolant Piping" and WEP-A-2-F-77, Rev. 3, "Reactor Coolant Piping." (Hot Leg-Unit 1)
11. National Valve and Manufacturing Company Drawings WEP-B-1-F-80, Rev 3, "Reactor Coolant Piping" and WEP-A-1-F-76, Rev. 3, "Reactor Coolant Piping." (Cold Leg-Unit 1)
12. WE Energies drawing, P-164, Sht. 1, Rev. 4, "Primary Coolant System, P-164, Point Beach N.P. Unit 1."

Note: References 1-4, 10 and 11 are available through Westinghouse and Point Beach drawing file systems. They will be added to EDMS for easier retrieval at a later date.

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Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC l Calculation Note Number Revision lPage ICN-RCDA-05-68-NP l 2 1 23 I Appendix A: Computer Run Logs Word Version 4.2

Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision IPage CN-RCDA-05-68-NP 1 2 2I Computer Run Log Summary R uz Machine Run Computer Run Description Name Run File Type EDMS File Name or File Location N Datedaime 1 Hot Leg - Maximum Properties - 4 Inch Input hotmaxel.lnp

. displacement CHot Leg - Minimum Properties - 4 Inch Input hotmlin._el.lnp 2 1 displacement 4 1 Cold Leg - Maximum Properties - 4 Inch Input coldmax_eLinp displacement Cold Leg - Minimum Properties -4 Inch Input coldmin-el.Inp 4 1 displacement 5 1 Cold Leg - Minimum Properties - 6.5 Inch Disp. Input coldmin-e16.5.inp Note: Only the input files have been stored on EDMS. These are sufficient to reproduce the results presented in this document.

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Westinghouse Non-Propretary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 25 I Appendix B: Supporting Documentation E-mail from MNC, Joe McNamara transmitting comments and isometric for Unit I (copied below, Figure B-1).

The following are a combination of Jane & my comments:

1) page 5 - Section 1.1 - Unit 1 instead of Unit 2 in second to last sentence. (as you already noted)
2) page 7 - Section 3.1 - Assumption 1 should make reference to the Unit 1 isometric also. I have attached iso P-164 r/4 below. Note that the elbow attached to the RCP return nozzle is in error. There is no elbow here. Also the Hot leg nozzle elbows are shown as 40 degree elbows. We know they are actually 50 degree elbows. We will be making a drawing change to correct these errors.
3) Page 22 - Section 7.0 - Add a reference #12 for the P-164 iso discussed above.

- Add "Rev 5" after reference 3 (P-258)

- Ref 10 should be WEP-B-2-F-81

- Ref 11 should be WEP-A-1-F-76 Joe McNamara

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> Word Version 4.2 THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE, THAT CAN BE VIEWED AT THE RECORD TITLED: "PRIMARY COOLANT SYSTEM P-164" WITHIN THIS PACKAGE D-01 Westinghouse Non-Proprietary Class 3 WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 27 Checklist A: Proprietary Class Statement Checklist Directions - (This section is to be completed by authors): Authors are to determine the appropriate proprietary classification of their document. Start with the Westinghouse Proprietary Class I category and review for applicability, proceeding to Westinghouse Proprietary Class 2 - Non-Releasable and finally to Westinghouse Class 2 - Releasable. The proprietary classification is established when the first criterion issatisfied. 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X 2 Are all the pages sequentially numbered and are the calculation note number, X revision number, and appropriate proprietary classification listed on each page? 3 Are the page numbers in the Table of Contents provided and correct? X 4 Are the subject and/or purpose of the calculation clearly stated in Section 1.1? X 5 Have the limits of applicability been identified in Section 1.2? X 6 Is the Summary of Results and Conclusions provided in Section 2.0 consistent with X the purpose stated in Section 1.1 and calculations contained in Section 6.3? 7 Are the assumptions clearly identified and justified in Section 3.1? X 8 Are open items properly identified in Section 3.2 and the calc note cover page? X 9 Are the Acceptance Criteria clearly and appropriately provided in Section 4.0? X 10 Are the methods clearly identified in the Method Discussion in Section 6.1 ? X 11 Are the required inputs and their sources provided in Section 6.2 and are they X appropriate for the current calculation? 12 Does Section 6.3 sufficiently describe the analysis details, results, and conclusions? X 13 Are all References in Section 7.0 retrievable within an approved Westinghouse X document management system (e.g., EDMS) or provided in Appendix B and is sufficient information provided to facilitate their retrieval? 14 Are all computer outputs documented in Appendix A and consistent with Table 5.1? X 15 Are all computer codes used under Configuration Control and released for use? X 16 Are the computer codes used applicable for modeling the physical and/or X computational problem contained in this calculation note? 17 Is Checklist A completed properly and are the proprietary classification, proprietary X clause and designation for release provided and consistent with the checklist? 18 Are results of literature searches included in the calculation note? X 19 Are the units of measure clearly identified? X 20 Are approved design control practices followed without exception? X 21 Are all hand-annotated changes to the calculation note initialed and dated by author X and verifier? Has a single line been drawn through any changes with the original information remaining legible? 22 If required, have computer files been transferred to archive storage? Provide page X number for list of files if not included in Appendix A. If 'NO' to any of the above, provide page number of justification or provide additional explanation below or on subsequent pages. Word Version 4.2 Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 29 I Checklist C: Verification Methodology Checklist (Completed By Verifier(s)) Initial If Verification Method (One or more must be completed by each verifier) Performed 1 Independent review of document. (Briefly explain method of review below or attach.) GD 2 Verification performed by alternative calculations as indicated below.')-

a. Comparison to a sufficient number of simplified calculations which give persuasive support to the original analysis.
b. Comparison to an analysis by an alternate verified method.
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d. Comparison to test results.
e. Comparison to measured and documented plant data for a comparable design.
f. Comparison to published data and correlation's confirmed by experience in the industry.

3 Completed Group Specific Verification Checklist. (Optional, attach ifused.) 4 Other (Describe) (1) For independent verification accomplished by comparisons with results of one or more alternate calculations or processes, the comparison should be referenced, shown below, or attached to the checklist. Verification: The verifier's signature (or Electronic Approval) on the cover sheet indicates that all comments or necessary corrections Identified during the review of this document have been incorporated as required and that this document has been verified using the method(s) described above. For multiple verifiers, indicated appropriate methods(s) by initials. If necessary, technical comments and responses (ifrequired) have been made on the 'Additional Verifiers Comments' page. Additional Details of Verifier's Review The calculation was reviewed using the 3-pass system. Comments included editorial and technical. All comments were satisfactorily resolved by the author as reflected in the current version. Rev. 1: Document was reviewed for the impact of revisions made to the document and determined to be acceptable. Rev. 2: Document was reviewed for the impact of revisions made to the document and determined to be acceptable. k Word Version 4.2 Westinghouse Non-Proprietary Class 3 I WESTINGHOUSE ELECTRIC COMPANY LLC Calculation Note Number Revision Page CN-RCDA-05-68-NP 2 l 30 I Additional Verifier's Comments The signature of the Author(s) and Verifier(s) on the cover page (or Electronic Approval) indicate acceptance of the comments and responses. No. Verifier's Comments Author's Response (If Required) none -4 4 -4 -+ 4 -4 4 -* 4 -4 4 4 4 = = = Word Version 4.2

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