ML102010461

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Enclosure 13 - Westinghouse Report, Ses 09-127-NP, (Nonproprietary) Revision 2, Monticello Steam Dryer - Structural Verification of Steam Dryer
ML102010461
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 06/28/2010
From: Mary Johnson, Mansson A
Westinghouse Electric Sweden AB
To:
Office of Nuclear Reactor Regulation
References
ES-09-0224, L-MT-10-046, TAC MD9990 SES 09-127-NP, Rev 2
Download: ML102010461 (168)
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ENCLOSURE 13 WESTINGHOUSE REPORT, SES 09-127-NP, (NONPROPRIETARY) REVISION 2, MONTICELLO STEAM DRYER - STRUCTURAL VERIFICATION OF STEAM DRYER 167 pages follow

Westinghouse Non-Proprietary Class 3 SOWestinghouse Report SES 09-127-NP, rev 2 Page 1 of 35 Westinghouse Electric Sweden AB Monticello Steam Dryer Replacement -

Structural Verification of Steam Dryer Author, telephone Mikael Johnson, +46 (0)21-34 74 59 Arne Mdnsson, +46 (0)21-34 78 47 Distribution Xcel Dept SES Order No ES-09-0224 Abstract This report presents a stress analysis of the Monticello Replacement Steam Dryer for Service Level A, B, C and D conditions. The purpose of the analysis is to verify that the Steam Dryer fulfills the requirements of Section III, Subsection NG of the ASME Code.

Based on the presented results it is shown that the overall stress levels are low in the steam dryer. For cyclic operation the requirements are fulfilled with good margins.

It is concluded that the steam dryer meets the requirements of ASME Section III, Subsection NG, 2004 Edition, No Addenda.

Review and approval status (Organization, name; initials)

Copy: Michael R Sivack, George McDonough, Hans Komfeldt, Roger Bri.ndstr6m, Marcus Hedberg

  • Westinghouse Report SES 09-127-NP, rev 2 Page 2 of 35 CONTENTS INTRODUCTION 2

SCOPE 3

DESIGN INPUT 4

STEAM DRYER GEOMETRY 5

MATERIAL 6

6 6

7 7

6 6,1 6,2 6.3 6A4 6,5 ALLOWABLE STRESS INTENSITIES Service Level A Service Level B Service Level C Service Level D Summary of Allowable Stress Intensities 7

LOAD 7,1 Load Term Definitions 7,2 Load Combinations 8

8.1 8.2 8,3 8.3.1 8.3.2 8.3.3 8.3.4 8,3.5 9

931 9.1.1 9.1.2 9.1.3 FINITE ELEMENT MODEL Finite Element Mesh Boundary Conditions Application of Loads I

]ac 8

8 9

9 9

10 11 12 13 13 14 14 15 15 16 16 16 17 17 17 17 17 17 20 20

((I Ia,c

]a,c

]a,c

]a,c RESULTS FOR UNIT LOAD CASES Unit Load Cases II

[I Ia,c

]a,c

]a,c 10 PRIMARY STRESS ANALYSIS FOR SERVICE LEVEL A/B CONDITIONS II PRIMARY PLUS SECONDARY STRESS ANALYSIS 12 PRIMARY STRESS ANALYSIS FOR SERVICE LEVEL D CONDITIONS

SES 09-127-NP, rev 2 Page 3 of 35 13 VERIFICATION OF CYCLIC OPERATION 21 13.1

[

]a,c 22 13.2

[

]aC 22 13.3

[]a,c 22 13.4

[

]a,c 23 13.5 Conclusion 24 14 SEISMIC BLOCKS 24 14.1 Introduction 24 14.2 The Assembly 25 14.3 Acceptance Criteria 25 14.4 Global Model 26 14.4.1 Geometry, FE Model and Material Properties 26 14.4.2 Loads 26 14.4.3 Boundary Conditions 27 14.4.4 Calculations and Results 27 14.5 Local Model 27 14.5.1 Geometry 27 14.5.2 FE Model 28 14.5.3 Material Properties 28 14.5.4 Loads 28 14.5.5 Boundary Conditions 29 14.5.6 Results, Level B (Upset) 29 14.5.7 Results, Level D (Faulted) 29 15 STEAM DRYER SUPPORT BRACKETS 30 16 STEAM DRYER HOLD DOWN BRACKETS 30 17 STEAM DRYER LIFTING RODS 31 18 CONCLUSIONS 32 19

]AC 33

] a,c

[

]a,c I

]a,c

Westinghouse SES 09-127-NP, rev 2 Page 5 of 35 ABBREVIATIONS ASME American Society Mechanical Engineers DW Dead Weight DP Differential Pressure FE Finite Element FEM Finite Element Model FIV Flow Induced Vibration MCO Moisture Carry Over MNGP Monticello Nuclear Generating Plant MSLB Main Steam Line Break OBE Operating Basis Earthquake SCL Stress Classification Lines SSE Safe Shutdown Earthquake WEC Westinghouse Electric Company

INTRODUCTION The Monticello Nuclear Generating Plant (MNGP) has purchased a replacement steam dryer from Westinghouse Electric Company (WEC). The dryer is custom designed and this report presents the analysis to verify that the replacement steam dryer fulfills the requirements of ASME Section III, Subsection NG, 2004 Edition, No Addenda [1].

2 SCOPE The analysis is performed using Finite Element Modeling (FEM). The finite element model is

[

]a,c.

- Primary stresses are evaluated for Service Levels A through D.

- Secondary stresses and fatigue are evaluated for Service Level A and B.

- The acoustic part originating from Flow Induced Vibrations (FIV) is considered for Level A and B service conditions.

- Seismic blocks are verified for applicable loads.

3 DESIGN INPUT All results are based on calculations using the FE model presented in [2]. [

STEAM DRYER GEOMETRY The Steam Dryer is custom designed to meet the requirements described in the Design Specification [4]. The Monticello Steam Dryer stands on four support brackets attached to the inside wall surface of the pressure vessel. [

]ac The design of the steam dryer is described in the drawings listed in [3].

5 MATERIAL The steam dryer is fabricated of stainless steel plates, bars and forgings from material SA-240 type 316L. The physical properties are listed in Table 5.1 [5] and the mechanical properties in Table 5.2 [5]. The following properties are used in the tables below:

E

=

Modulus of elasticity v

=

Poisson's ratio a

=

Coefficient of thermal expansion p

=

Density Sy

=

Yield strength Su =

Ultimate strength Sm =

Design stress intensity according to ASME [I]

T

=

Temperature

a,C ac F

A-F i

I F

+

II

]a,c 6

ALLOWABLE STRESS INTENSITIES This section presents the allowable stress limits for material specified as SA-240 type 316L and at a temperature of 286'C (547°F). The following properties are used:

Pm =

General primary membrane stress PL =

Local primary membrane stress Ph =

Primary bending stress Q =

Secondary stress 6.1 SERVICE LEVEL A Allowable primary stress limits for Level A conditions are according to [1] paragraph NG-3222:

]a,c In addition the following limit for the range of the primary plus secondary stresses must be fulfilled according to:

I

]a,c

  • Westinghouse Report SES 09-127-NP, rev 2 Page 9 of 35 6.2 SERVICE LEVEL B Allowable primary stress limits for Level B conditions are according to [1] paragraph NG-3223:

I

]a,c I

]a,c I

]a,c In addition the following limit for the range of the primary plus secondary stresses must be fulfilled according to:

I

]a,c 6.3 SERVICE LEVEL C Allowable primary stress limits for Level C conditions are according to [I] paragraph NG-3224:

[.

]a,c

[

]a,c 6.4 SERVICE LEVEL D Allowable primary stress limits for Level D conditions are according to [1] paragraph NG-3225 and [10] paragraph F-1331. The limit for the general primary membrane stress is:

.[

]a,c 6.5

SUMMARY

OF ALLOWABLE STRESS INTENSITIES The allowable stress intensities are summarized and presented for varying temperatures in Tables 6.1-5 below.

a,c I-I-

F

  • Westinghouse Report SES 09-127-NP, rev 2 Page II of 35 a,C i

i

.4

.4

-4

-4 In the evaluation of the requirements according to ASME NG-3220 a weld quality factor of

[

]

is being used for the analyzed locations of component groups [

]a,c. These values are considered in accordance with the weld table [3] which is based on Table NG-3252-1 [1]. The quality factors reduce the allowable primary stress limits compared to the values stated in the tables above.

7 LOAD Applied loads are according to Design Specification [4].

ac 7.1 LOAD TERM DEFINITIONS

+

7.2 LOAD COMBINATIONS The applied loads are combined according to Design Specification [4] and presented in Table 7.2 below.

a,c

[

]a,c a,c

FINITE ELEMENT MODEL All results in the report are based on calculations using the FE model presented in more detail in [2]. The FEM software being used is ANSYS 11.0 [6].

8.1 FINITE ELEMENT MESH

[

]a,c I

Ia,c a,c i

i I-

+

F~i-

+

i

+

8.2 BOUNDARY CONDITIONS The FE model is constrained at the four positions corresponding to the steam dryer support brackets, see Appendix 1. [

]a,c 8.3 APPLICATION OF LOADS This section describes how the load is applied in the different unit load cases. The solution results for each of these unit load cases are then scaled and combined to correspond to the evaluated load combinations, [

]a,c.

  • Westinghouse Report SES 09-127-NP, rev 2 Page 15 of 35 8.3.1 ja,c

[

]a~c 8.3.2 Ia,c I

I ac a,c F

+

F

+

[

]ac ac F

+

i

+

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i i

I

]a,c 8.3.3

] a,c I

]ac 8.3.4 I a,c I

]ac 8.3.5

]a,c I

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]a,c 9

RESULTS FOR UNIT LOAD CASES In the stress evaluation process the Steam dryer is divided into different component groups

[

]", see section 8.1 and Appendix 1. This is to make it easier to identify high stress locations and for visualization.

Analysis is performed in SI units, therefore, in Appendices, all stress results are inPascals and deformations are in meters.

9.1 UNIT LOAD CASES This section presents the results for the separate unit load cases.

9.1.1

[

Ia'c

[

]a,c 9.1.2

] a,c I

]ac 9.1.3 Sa,c I

]a,c 10 I

PRIMARY STRESS ANALYSIS FOR SERVICE LEVEL A/B CONDITIONS

]a c Appendix 6 shows the shell top surface stress and Appendix 7 the shell mid-surface stress for load case B-4. As shown the overall stress levels are low in the steam dryer. Based on the results some locations are identified to have higher stresses (see Appendix 8) and are therefore evaluated as described below. The investigated component groups are [

]a,. The main components of these three groups are [

ac.

For this part of the evaluation the procedure is based on FE calculated primary stresses over a stress classification line (or path). Each of these lines defines a section (extending along the defined path and through the thickness) of the structure. The average membrane and membrane plus bending stress is computed along these lines and compared to the limit values.

]a,c The calculation of the membrane stress is based on

]a,c To evaluate the membrane plus bending stress the same procedure is adopted

]a,c The resulting membrane and membrane plus bending stresses are presented in Table 10.1. In the tables below, [

]a,c.

a,c

  • Westinghouse Report SES 09-127-NP, rev 2 Page 19 of 35 a,c FI I I + I I

]a,c a,c

[

]a~C The results show that the overall stress levels are low in the steam dryer for Service Levels A and B.

The areas for which the membrane and membrane plus bending stresses have been calculated and presented in Table 10.2 are extremely local, see Appendix 8. Based on the results shown in Table 10.2 the smallest stress ratio (defined as the allowable stress divided by the calculated stress) [

]a C The results are below the limit values and thereby it can be concluded that the requirements for primary stresses are fulfilled for Service level A and B conditions.

11 PRIMARY PLUS SECONDARY STRESS ANALYSIS The Service Level A and B conditions need to fulfill the requirement for the range of primary plus secondary stresses which should be compared to the limit of 3 "Sm.

]a,c

]a,c 12 PRIMARY STRESS ANALYSIS FOR SERVICE LEVEL D CONDITIONS For the faulted conditions, Service level D, presented in the Design Specification [4].

]a,c as Table 12.1 presents the highest stress values for each component group (defined in section 8.1). The results show that the stresses due to load [

.]a,c are all below the stress limits.

]a~C The results show that the overall stress levels are low in the steam dryer for Service Level D.

The presented stress values in Table 12.1 are for areas in the components which are extremely local. Based on the results in Table 12.1 the smallest stress ratio is for [

]a"c The results are below the limit values and thereby it can be concluded that the requirements for primary stresses are fulfilled for Service level D conditions.

13 VERIFICATION OF CYCLIC OPERATION

]a,c

[

]a,c I

]a,c 13.2

]a,c I

]a,c 13.3

]ac I

]a,c 13.4

]a,c II

]ac a,c i-i i

i i

F F

F I

]a,c

13.5 CONCLUSION

In this section it is shown that the conditions in [1] [

]"'. This means that the code requirements for cyclic operations are fulfilled and that the structure is verified for cyclic loads.

14 SEISMIC BLOCKS

14.1 INTRODUCTION

Horizontal inertia forces are transmitted from the reactor pressure vessel to the steam dryer via four steam dryer support brackets (welded to the inside of the vessel wall) that also carry the weight of the steam dryer.

pac This section of the report describes the structural verification of the earthquake blocks and adjacent structures, []a' A two-step procedure is used:

" Using a global model (a model of the entire steam dryer), maximum vertical and horizontal reaction forces due to seismic accelerations are computed for the four support locations. Friction is conservatively ignored.

Resulting stresses are then calculated using a local model comprising one support location, with earthquake blocks and adjacent structures.

  • Westinghouse Report SES 09-127-NP, rev 2 Page 25 of 35 The FEM software ANSYS, Release 11.0 UP20070125 is used.

14.2 THE ASSEMBLY

]ac 14.3 ACCEPTANCE CRITERIA According to the Design Specification [4] the strength requirements of 2004 ASME Section II, Subsection NG apply. See Table 14.1 and Table 14.2; where relevant criteria are summarized.

a,c

  • Westinghouse Report SES 09-127-NP, rev 2 Page 26 of 35 a.c 14.4 GLOBAL MODEL 14.4.1 Geometry, FE Model and Material Properties See section 5 and 8.1.

14.4.2 Loads Table 7.3 specifies that seismic loads are included in the two load combinations:

" Level B (Upset): [

" Level D (Faulted): [

ac

]a,c These combinations include other loads as well,

]ac Seismic acceleration loads are given in Design Specification [4], Appendix B. The support brackets for the steam dryer are welded to the reactor vessel wall around elevation [

]a,c According to Figure B-I in [4] this elevation corresponds to [

]"'a acts simultaneously. These values are for OBE.

SSE values are two times the OBE values.

  • Westinghouse Report SES 09-127-NP, rev 2 Page 27 of 35 14.4.3 Boundary Conditions The model's original boundary conditions are deleted, and replaced with the following:

[I 0

pac Boundary conditions are illustrated in Appendix 13.

14.4.4 Calculations and Results The horizontal OBE acceleration [

]a,c Resulting horizontal (i.e. tangential) OBE reaction forces in each support location for each horizontal acceleration direction are listed in Appendix 14. Corresponding vertical reactions are listed in Appendix 15 (the angular support positions are as specified in the steam dryer drawings).

The tables in Appendices 14 and 15 show that maximum computed horizontal (tangential)

OBE reaction force at a support location is [

]a"c while maximum vertical force is [

]a,c SSE reactions are two times these values.

14.5 LOCAL MODEL 14.5.1 Geometry

]a,c A simplified geometry is used for the earthquake block model; only the main load carrying parts are included.

The model of the bracket [

]ac is simplified as well, in that no holes are modeled, and the part protruding outside the diameter of the skirt is ignored.

Appendix 16 contains plots of the geometry.

  • Westinghouse Report SES 09-127-NP, rev 2 Page 28 of 35 14.5.2 FE Model The model consists of a~c Remaining welds are full penetration welds, simulated by using common nodes in interfaces between all parts of the model.

14.5.3 Material Properties All modeled parts are made of ASME SA-240 Type 316 L. Material properties are taken from

[5]. Values at 3000C (572°F) are conservatively used:

0 Young's modulus: [

" Poisson's ratio: [

]a,c

" Density: [

  • Yield stress:

" Ultimate stress: [

" Design stress intensity:

ac ac

]a,c

]a,c

]a,c Welds are assumed to have the same material properties as the base material.

14.5.4 Loads Maximum reaction forces from the global model analysis (see section 14.4.4) are applied simultaneously in the two directions, together with deadweight loads:

  • A horizontal/tangential force, rounded to pac A vertical force, acting upwards, evenly distributed on comer nodes over an area approximately corresponding to the footprint of the support bracket. [

]a,c See Appendix 19.

Westinghouse 14.5.5 Boundary Conditions

[

Report SES 09-127-NP, rev 2 Page 29 of 35

]a,c See Appendix 20.

14.5.6 Results, Level B (Upset)

Stress intensity distributions are shown in Appendix 21.

]a~C The last page shows stresses in the earthquake blocks only, where-the maximum computed stress is [

]a~C (i.e. below Sm).

For evaluation against the acceptance criteria in Table 14.1 and-Table 14.2, stresses are linearized along the path shown in the last page.of Appendix 21, [

membrane stress intensity is [

.is [

The Pm criterion is satisfied since The Pm + Pb criterion is also satisfied since

[

]a,c < 1.5'Sin [

]a'C Computed

]a,c and membrane' plus bending stress intensity

]a,c

]a,c < Sm [

]a,c,

]a,c When loads are considered to be due to OBE and deadweight a comfortable strength margin is shown to exist.

Postulating that a zero-stress condition is the other extreme case, the criterion for the range of PI, + Pb+ Q is also satisfied by a considerable margin, since the allowable value is 3 "Sm

]a,c Other paths through the earthquake blocks yield lower P. and P,, + Pb values.

14.5.7 Results, Level D (Faulted)

Allowable values:

[

a

]a,c

G Westinghouse Repor SES 09-127-NP, rev 2 Page 30 of 35 SSE accelerations are two times the OBE values. Level D stresses are therefore assumed to be twice the Level B stresses above. This is very conservative, since the deadweight is then included twice in the vertical force.

Under this conservative assumption the P,, and PL criteria are satisfied since

]a,c The P. + Pb criterion is also satisfied since [

]a,c 15 STEAM DRYER SUPPORT BRACKETS The complete analysis of the steam dryer support brackets and the results are presented in Reference [9]. The Steam Dryer Support Brackets is attached to the RPV by a full penetration weld. A finite element model of the support bracket and a section of the RPV were generated and appropriate boundary condition was used to simulate the actual condition. The load combination according to the design specification [4] was generated with the extracted brackets loads from two different analyses, the diyer acoustic analysis [7] and the structural analysis. [Since the bracket and the RPV were not modified and are in the same original design condition but only the bracket loads caused by the dryer weight as well as the dryer load modification has changed, a comparative analysis methodology is used to show that the bracket meets and exceed the code qualification.]ac The lowest stress ratio of the dryer support bracket is [

]a,C for Level A & B and the fatigue usage of [

]a,c.

The results of the analyses demonstrate that the stress analysis results comply with the limitations imposed by the ASME code [1]. Details are provided in Reference [9].

16 STEAM DRYER HOLD DOWN BRACKETS A check is performed to investigate the lifting force of the steam dryer when it is being subjected to the highest differential pressure By this it is concluded that there is no need for an updated evaluation of the steam dryer hold down brackets.

OWestinghouse Report SES 09-127-NP, rev 2 Page 31 of 35 17 STEAM DRYER LIFTING RODS The complete analysis of the steam dryer lifting rods and the results are presented in Reference

[9]. A summary of the results are presented in Table 17.1 below.

]a,C the resulting minimum stress margin for the lifting rods is [

]a,, which exceeds the design criterion (Stress Margin > 1.0). The maximum alternating stress for the lifting rods is

]a,c

]a,c The lifting lugs thread analysis and evaluation was performed by hand calculation per.

]ac The analysis of the threads shows that the thread engagement and margin is sufficient.

a,c

  • Westinghouse Report SES 09-127-NP, rev 2 Page 32 of 35 18 CONCLUSIONS The report presents an evaluation of primary stresses, primary plus secondary stresses and cyclic operation.

[

]a c The results show that the overall stresses in the steam dryer are below the ASME stress allowables for Service Levels A and B. [

]a,c The results show that the overall stresses in the steam dryer are below the ASME stress allowables for Service Level D.

The verification of cyclic operation shows that the requirements are fulfilled with good margins.

With support of the presented results it is concluded that the steam dryer fulfils the requirements of ASME Section III, Subsection NG, 2004 Edition, No Addenda [I ].

In addition the seismic blocks and lifting rods were analyzed and shown to meet the requirements.

[

I Ia,c

]a,c

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  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 10 Page 10 of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 10 Page 1I of 13 ac
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 10 Page 12 of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 10 Page 13 of 13 ac

OWestinghouse Report SES 09-127-NP, rev 2 Appendix II Page 1 of 13 a,c

OWestinghouse Report SES 09-127-NP, rev 2 Appendix 11 Page 2 of 13 ac

  • Westinghouse Report SES 09-127-NP, rev 2 Appendix II Page 3 of 13 a,c

O(Westinghouse Report SES 09-127-NP, rev 2 Appendix 11 Page 4 of 13 a,c

eWestinghouse Report SES 09-127-NP, rev 2 Appendix 11 Page 5 of 13 a,c

  • Westinghouse Report SES 09-127-NP, rev 2 Appendix I I Page 6 of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 11 Page 7 of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 11 Page 8 of 13 a,c

(OWestinghouse Report SES 09-127-NP, rev 2 Appendix 1I Page 9 of 13 ac

  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 11 Page 10 of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 1I Page I I of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix I I Page 12 of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 11 Page 13 of 13 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 1 of 9 a,c

O Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 2 of 9 a,c

  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 3 of 9 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 4 of 9 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 5 of 9 ac
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 6 of 9 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 7 of 9 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 8 of 9 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 12 Page 9 of 9 a,c
  • Westinghouse Report SES 09-127-NP, rev 2 Appendix 13 Page 1 of I a,c7

Report SES 09-127-NP, rev 2 Appendix 14 Page 1 of 1 ac

Report SES 09-127-NP, rev 2 Appendix 15.

Page IofI a,c

Report SES 09-127-NP, rev 2 Appendix 16 Page 1 of 2 ac

Report SES 09-127-NP, rev 2 Appendix 16 Page 2 of 2 ac

Report SES 09-127-NP, rev 2 Appendix 17 Page I of 5 a,c

Report SES 09-127-NP, rev 2 Appendix 17 Page 2 of 5 a,c

Report SES 09-127-NP, rev 2 Appendix 17 Page 3 of 5 a,c7

Report SES 09-127-NP, rev 2 Appendix 17 Page 4 of 5 a,c

Report SES 09-127-NP, rev 2 Appendix 17 Page 5 of 5 a,c

Report SES 09-127-NP, rev 2 Appendix 18 Page I of I a,c

Report SES 09-127-NP, rev 2 Appendix 19 Page 1 of I a,c

Report SES 09-127-NP, rev 2 Appendix 20 Page 1 of I a,c

Report SES 09-127-NP, rev 2 Appendix 21 Page I of 4 ac

Report SES 09-127-NP, rev 2 Appendix 21 Page 2 of 4 ac

Report SES 09-127-NP, rev 2 Appendix 21 Page 3 of 4 a,c

Report SES 09-127-NP, rev 2 Appendix 21 Page 4 of 4 a,c

Report SES 09-127-NP, rev 2 Appendix 22 Page 1 of I ac

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