ML093620024

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Report 0800760.401, Rev. 1, Flaw Evaluation and Vibration Assessment of Existing Monticello Steam Dryer Flaws for Extended Power Uprate.
ML093620024
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 12/18/2008
From: Sommerville D
Structural Integrity Associates
To:
Office of Nuclear Reactor Regulation, Nuclear Management Co
References
L-MT-09-005, TAC MD9990 0800760.401, Rev 1
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ENCLOSURE 1 Report 0800760.401, Rev. 1, "Flaw Evaluation and Vibration Assessment of Existing Monticello Steam Dryer Flaws for Extended Power Uprate"

Report No. 0800760.401 Revision 1 Project No. 0800760 December 2008 Flaw Evaluation and Vibration Assessment of Existing Monticello Steam Dryer Flaws for Extended Power Uprate Preparedfor:

Nuclear Management Company Monticello, MN Contract No 1005 Release 4 Amendment 3 Preparedby:

Structural Integrity Associates, Inc.

Centennial, CO Preparedby: Date: 12/18/2008 D. V. Sommerville Reviewed by: Date: 12/18/2008 M.L. Herrera, P.E. & S. Tang Approved by: Date: 12/18/2008 K.K. Fujikawa, P.E.

V StructuralIntegril Associates, Inc.

REVISION CONTROL SHEET Document Number: 0800760.401

Title:

Flaw Evaluation and Vibration Assessment of Existing Monticello Steam Dryer Flaws for Extended Power Uprate Client: Nuclear Management Company SI Project Number: 0800760 Quality Program: 0 Nuclear [] Commercial Section I Pages I Revision Date I Comments 1-1'"* Initial Issue 1 Revision 0 10/24/08 2 2-1 5 3 3-1 4 4-1 12 5 5-1 7 6 6-1 2 7 7-1 8 8-1 App A A A-20 Att Attl-l-Attl-4 At 2 Att2-1-Att2-4 Att3 Att3-1-Att3-2 At 4 Att4-1-Att4-2 At 5 Att5-1-Att5-4 8 8-1 Corrected report number for Reference 4 V StructuralIntegrityAssociates, Inc.

Table of Contents Section Page 1.0 INTR ODUCTION & SCO PE ....................................................................................... 1-1 2.0 STEAM DRYER IND ICATION S ............................................................................... 2-1 3.0 INPUT DATA ................................................................................................................. 3-1 4.0 FLAW EVALUATION METHODS AND ASSUMPTIONS .................................... 4-1 4.1 V3 90°, VI0 90", VI0 270" Indications ................................................................. 4-1 4.1.1 Assumptions ............................................................................................................ 4-1 4.1.2 Methods.................................................................................................................... 4-2 4.2 215" Dryer Support Bracket Guide Channel Indication .............................................. 4-5 4.2.1 Assumptions ....................................................................................................... 4-5 4.2.2 Methods.................................................................................................................... 4-6 4.3 Drain Channel "F" Access Hole Cover Plate Indications ............................................ 4-7 4.3.1 Assumptions ............................................................................................................. 4-7 4.3.2 Methods.................................................................................................................... 4-8 5.0 FLAW EVALUATION RESULTS .............................................................................. 5-1 5.1 V3 90", VIO 90", V1O 270" Indications ....................................................................... 5-1 5.2 215" Dryer Support Bracket Guide Channel Indication .............................................. 5-3 5.3 Drain Channel "F" Access Hole Cover Plate Indications ............................................ 5-3 6.0 VIBRATION ASSESSM ENT ....................................................................................... 6-1 6.1 V3 90", VlO 90", V1O 270" Indications ....................................................................... 6-1 6.2 215" Dryer Support Bracket Guide Channel Indication .............................................. 6-1 6.3 Drain Channel "F" Access Hole Cover Plate Indications ............................................ 6-2 7.0 CONCLU SIONS .................................................................... ........................................ 7-1 8.0 REFEREN CES ............................... e............................................................................... 8-1 APPENDIX A ........................................................................................................................... A-1 ATTACH MENT 1: ........................................................................................................... ATT1-1 ATTACHM ENT 2: ............................................................................................................ ATT2-1 ATTACH M ENT 3: ............................................................................................................ ATT3-1 ATTACHMENT 4: ............................................................................................................ ATT4-1 ATTACHM ENT 5: ............................................................................... o............................ ATT5-1 Report No. 0800760.401.Rev 1 iii f StructuralIntegrity Associates, Inc.

List of Tables Table Page Table 2-1. Summary of Monticello Steam Dryer Indications ..................................................... 2-1 Table 5-1. Tabulation of Nodal Stress Inensity Distributions Given in Figures 5-5 and 5-6 ............................................................................................... 5-4 Table 5-2. Summary of Alternating Stress Intensity Factor for Various Crack Lengths in V 3 & V 1O Welds ................................................................................................... 5-4 Table 5-3. Summary of Alternating Stress Intensity Factor for Guide Bracket and Access Hole Cover Plate Indications ........................................................................ 5-5 Table A-1. ANSYS Component Identification for V3 and VI0 EPU FIV Load Case Stress Intensity Output ............................................................................................. A -2 Table A-2. V3 90" FEM Stress Intensity Output - EPU FIV Load Case .................................. A-3 Table A-3. VlO 90" FEM Stress Intensity Output- EPU FIV Load Case ................................ A-6 Table A-4. V10 270° FEM Stress Intensity Output- EPU FIV Load Case .............................. A-9 Table A-5. Guide Channel FEM Stress Intensity Output - EPU FIV Load Case ................... A-12 Table A-6. Access Hole Cover Plate FEM Stress Intensity Output - EPU FIV Load Case... A-20

-Report No. 0800760.401.Rev 1 iv V StructuralIntegrityAssociates, Inc.

List of Figures Figure Page Figure 2-1. Steam Dryer Indications Identified on Top View of Dryer Finite Element Model...................................... 2-2 Figure 2-2. Location of V3 90* Indication .................................................................................. 2-2 Figure 2-3. Location of V 10 90' Indication ................................................................................ 2-3 Figure 2-4. Location of V 10 270* Indications ............................................................................ 2-3 Figure 2-5. Location of Dryer Support Guide Channel Indication at 215. ................. ................ 2-4 Figure 2-6. Approximate Location of Drain Channel "F" Indications. ..................................... 2-4 Figure 2-7. Schematic of Drain Channel "F" Indications [4] ..................................................... 2-5 Figure 4-1. Stress Intensity Factor Solution for an Edge Cracked Semi-Infinite Plate with Uniform Stress [9] ............................................................................................ 4-9 Figure 4-2. Stress Intensity Factor Solution for an Edge Cracked Semi-Infinite Plate with Linearly Varying Crack Face Traction [9] ..................................................... 4-10 Figure 4-3. Stress Intensity Factor Solution for an Edge Cracked Semi-Infinite Plate with Point Load Applied at an Arbitrary Distance Along Crack Face [9] .............. 4-11 Figure 4-4. Stress Intensity Factor Solution for a Center Cracked Panel [9]; .......................... 4-12 Figure 5-1. Component Stress Intensity Distributions for V3-90" Flaw Location ..................... 5-5 Figure 5-2. Component Stress Intensity Distributions for V10-90* Flaw Location ................... 5-6 Figure 5-3. Component Stress Intensity Distributions for V10-270* Flaw Location ................. 5-6 Figure 5-4. Composite Stress Intensity Distributions for all Flaw Locations ............................. 5-7 Figure 5-5. Scaled Composite Stress Intensity Distributions for all Flaw Locations, corrected to Flaw Origin and Curve-fit ........................... 5-7

-Report No. 0800760.401.Rev 1 v StructuralIntegrity Assoclates, Inc.

1.0 INTRODUCTION

& SCOPE The Monticello Steam Dryer was inspected using the guidelines provided in BWRVIP-139 [1]

during the 2005 and 2007 refueling outages. The dryer internals were inspected for the first time in the 2007 refueling outage. Reportable indications were identified in five locations during these examinations [2, 3]. The locations with identified indications were not inspected prior to the 2005 refueling outage.

Nuclear Management Company (NMC) has previously performed flaw evaluations [4, 5] of the indications identified in the steam dryer for operation at current licensed thermal power (CLTP).

NMC desires the previous flaw evaluations to be updated to incorporate the effect of operation at extended power uprate (EPU) conditions. Further, the effect of these flaws on the dynamic characteristics of the steam dryer is evaluated in order to assess if the uncracked steam dryer finite element model (FEM) used to perform the EPU stress analysis should be modified to address cracking.

This report documents flaw evaluations and a vibration assessment of the steam dryer indications identified in Section 3.0 considering EPU operating conditions. The methods utilized in the previous flaw evaluations are utilized here, where appropriate, to maximize consistency between the current and previous work. Further, plant specific EPU flow induced vibration (FIV) stresses are used for the current evaluation; plant specific stresses were not available for the previous evaluations.

Report No. 0800760.401.Rev 1 1-1 R StructuralIntegrity Associates, Inc.

2.0 STEAM DRYER INDICATIONS The indications identified in the Monticello dryer are reported in References [2,3]. For clarity, the Inspection Notification Reports (INR) for each indication are provided in Attachments 1 through 5. Figures 2-1 through 2-7 illustrate the general location of each indication. Table 2-1 summarizes the dimensions of each flaw as reported in the inspection reports.

Table 2-1. Summary of Monticello Steam Dryer Indications.

Location Sotee 2005 [21 2007 131 Notes One indication is located at the top of Weld V3 900. This indication extends for approximately 1.375 inches on the outside of V3 90" 1.375" 1.375" the end panel weld across the top and down the inside of the weld to Dryer Bank "B" for approximately 1 inch. The indication is contained within the weld material.

Two indications have been identified at this location in 2007. One is located at the top of Weld V10 90' and extends for approximately 1.375 inches in length. The second indication 1.375" 1.375" is located on the opposite side the plate from V10 90" the first indication and is approximately 0.25 0.25" inch long. Both indications are contained within the weld material. The 2005 inspection report does not suggest the region in which the second flaw is located was inspected during that time.

One indication is located at the top of the weld at the junction of the end panel V1O 270' < 1" < 1" and the dryer bank. This indication is less than 1 inch in length. The indication is contained within the weld material.

One indication is located approximately 4 feet from the bottom of 2150 Dryer Support Bracket Guide Channel. The indication is oriented horizontally across from a possible 215' Dryer Support 0.75" 0.75" arc strike around the corner of the channel and Bracket Guide Channel into the left toe of a vertical weld on the face of the dryer. The indication is on the right side of the Guide Channel and the length is approximately %inch.

Drain Channel "F" The 2007 dryer internal examination results DAinessHoChanel "Not No sizing indicate cracking sporadically around the Plate Inspected provided circumference of the access hole cover plate.

No flaw dimensions are provided.

Report No. 0800760.401.Rev I 2-1 1 Structural IntegrityAssoclates, Inc.

FVO1.2 71.V I

Dsa n Zutirct"F guide At215*

Sttppomr 180" ligurc 2-1. Steam D)rycr Indications Identified on ' op View of Dryer Finite Element Model.

Note: I. Dryer lifting lug has been removed to better visualize indication location.

2. Indication location is identified by white circle.

Figure 2-2. L.oeation of V3 90" Indication.

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StructuralI 080760.01 Repot

Note: I. Dryer lifting lug has been removed to better visualize indication localion.

2. Indication location is identified by white circle.

Figure 2-3. Location of V10 90* Indication.

Note: I. D)ryer lifting lug has been removed to better visualize indication location.

2. Indication location is identified by white circle.

Figure 2-4. Location of' V 10 270' Indications.

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Note: I. Approximate indication location is identified by white circle.

Figure 2-5. l~ocation of Diryer Support Guide Channel Indication at 215%.

Note: I. View orientation is from inside dryer looking outward.

2. Approximate indication locations are identified by red box.

Figure 2-6. Approximate Location of Drain Channel 'T" Indications.

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L H SQUJARE DRAW~ PIPE. I-Pd '

-'3d L

F_ ~~ ~ ~ ---------- I E

a-a 1.

r-C" I..

5-. I II.

-S i I-

'555 L5I 5~U55 SI IS 5555 55 5 55 5 S S S S I S 555 I LLLL S S ~X 1 3 3

  • ~

5,1 I' 2o PRAIlJ CHANOFEL F' Note: 1. View orientation is from inside dryer looking outward.

2. Indications observed to follow weld HAZ.

Figure 2-7. Schematic of Drain Channel "F" Indications [5].

Report No. 0800760.401.Rev I 2-5 !R1StrucluralIntegrityAssociates, Ina

3.0 INPUT DATA The following data are used as inputs to this evaluation:

  • Indication location, orientation, size [2, 3, 4, 5]
  • CLTP flaw evaluations [4, 5]
  • FIV steam dryer stresses for EPU operation [6]
  • Steam Dryer Reactor Internal Pressure Difference (RIPD) for EPU Operation [7]

The indication locations and sizes are obtained from the previous IVVI reports as well as the previous flaw evaluations. The FIV steam dryer stresses for EPU operation are obtained from Continuum Dynamics, Inc (CDI). All inputs except for the EPU FIV steam dryer stresses and previous Structural Integrity flaw evaluation were obtained from NMC via Design Information Transmittal EPU-0284 [8].

Report No. 0800760.401.Rov I 3-1 R Structural IntegrityAssoc/ates, Inc.

4.0 FLAW EVALUATION METHODS AND ASSUMPTIONS This section describes the general methods and assumptions used to perform the steam dryer flaw evaluations. Each indication will be addressed separately below. In general, the methods of BWRVIP-139 [1] are utilized where specific guidance is applicable. Further, the methods and assumptions of the previous flaw evaluations [4, 5] are incorporated in the current evaluation where they remain applicable.

4.1 V3 90, V10 90, V1O 270* Indications This section describes the methods and assumptions used for the flaw evaluation of the four vertical indications in the V3 and V 10 welds at 90' and 270'.

4.1.1 Assumptions The following assumptions are used for the subject flaw evaluation:

1. All indications are contained within the weld material and no branching is evident; therefore, the flaws are assumed to be fatigue cracks rather than intergranular stress corrosion cracking (IGSCC).
2. The flaw configuration is adequately modeled as an edge crack in a semi-infinite plate.
3. The length of the vertical weld compared to the crack length is sufficiently large that a finite thickness correction factor is not included in the linear elastic fracture mechanics (LEFM) solution.
4. The mode I stress intensity factor (KI) is expected to be small; therefore, a plastic zone size correction is not included in the LEFM solution.
5. The cracks in the fillet welds on either side of the vertical plate are independent flaws.

The fillet welds are not full penetration welds; therefore, each fillet weld is evaluated as an independent structure.

6. The alternating stress intensity factor used for calculation of fatigue crack growth (FCG),

AKI, is obtained from the range of alternating stress intensity contributed by flow induced vibration (FIV) loading only.

7. The subject geometry is geometrically similar to a thin plate; therefore, the stress state will be characterized by a plane stress condition. This will result in one of the three Report No.-0800760.401.Rev.,l 4-1 !V StructuralIntegrityAssociates, Inc.

principal stresses being close to zero. In this case it is conservative to assume the crack driving force is bounded by the ASME B&PV Code defined stress intensity acting as a membrane stress along the entire surface of the crack face. The stress intensity will always be equal or larger to the largest principal stress component for this configuration.

8. System thermal cycles, seismic and hydraulic loads contribute an insignificant number of cycles during the next operating period; therefore, they make a negligible contribution to FCG compared to FIV loading and are not calculated here.
9. Deadweight, static thermal loads, differential pressure, and weld residual stresses contribute to the mean K, rather than AKI; therefore, they are considered only in the selection of a conservative R-ratio and not specifically considered in calculation of a mean K1. Assuming an R-ratio of 1 incorporates the maximum effects of mean stress on the expected FCG of the steam dryer indications.

4.L.2 Methods The flaw evaluation of the subject indications is performed using the following methods:

1. The EPU FIV range of alternating stress intensities output from the existing uncracked finite element model (FEM) of the Monticello steam dryer for each of the three crack locations are reviewed. A composite stress distribution, which bounds the individual stress distributions for all locations, is assembled from the top, middle, and bottom element output locations for each of the three indication locations (V3 90', V10 90%, and V10 2700).
2. The composite stress distribution is conservatively scaled by a weld factor of 1.8 to incorporate peak stress effects in the weld.
3. Subsequent stress intensity factor and FCG calculations are performed for a bounding flaw size and are applicable for all flaw locations.
4. The range of stress intensity factor experienced as a result of the EPU FIV loading is calculated using two separate methods:

Report No. 0800760.401 .Rev 1 4-2 StructuralIntegrityAssociates, Inc.

Method 1: The AKI can be determined from the superposition of a constant and linearly varying stress distribution extracted from the composite stress distribution at any desired crack length. The total AK1 is determined using the K1 solutions shown on pages 193 and 205 of Reference [9]:

Constant Stress: KI = 1.1215. P.i4ro -. (I a)

Linear Stress Variation: K 1 = 0.439. P, F (ib)

Superposition of both: K, = (1.1215 Pm + 0.439. P,).'YFr-a (ic)

Where: Pm is the constant stress distribution defined as equal to the total stress at the crack tip, ksi Pb is the linearly varying stress distribution defined as equal to the difference between the stress at the free surface and Pm, ksi a is the crack length, in Figures 4-1 and 4-2 illustrate the flaw configurations for which Equations (l a) and (lb) are applicable.

Method 2: The total AKI can be determined by integrating the K1 solution derived for a point load applied at an arbitrary location along an edge crack in a semi-infinite plane.

Page 197 of Reference [9] gives the K, solution for this configuration as:

54 Nr-a 11 2, .p.- - _Tb 1.3-0.3"(b) a (2a)

Where: P is a force per unit thickness applied at a distance b from the free surface, kip/in Report No. 0800760.401-.Rev 1 4-3 StructuralIntegrityAssoclates, Inc.

b is the point of load application measured with respect to the free surface, in a is the crack length, in Figure 4-3 illustrates the flaw configuration for which Equation (2a) is applicable.

Defining P to be a function of b, P(b), and noting that the product of the stress distribution along the crack face a(b) and a differential length of crack face, db, is equal to the force per unit thickness, P(b), defined in Equation (2a):

P(b) = cr(b). d (2b)

Inserting Equation (2b) into Equation (2a) and integrating along the length of the crack face gives a solution for K, for an arbitrary stress distribution along an edge crack in a semi-infinite plane:

K, 2 b 1"30"".___-- Adb (2c)

Where: a(b) is the equation describing the stress distribution along the crack face, ksi b is the location along the crack face measured with respect to the free surface, in db is the differential element of the crack length, in a is the crack length, in Either method can be used to assess the range of alternating stress intensity at the crack tip. Equation (2c) will provide a more accurate estimate because it incorporates a more accurate expression for the tractions on the crack face.

Report No. 0800760.401.Rev I 4-4 R o StructuralIntegrityAssociates, Inc.

5. The FCG growth expected during the next operational cycle is determined using the methods contained in Article C-3000 of the ASMTE B&PV Code, Section XM. Note that since the flaw is fully contained in the weld metal and is not considered to be IGSCC, SCC growth is not considered.

4.2 215" Dryer Support Bracket Guide Channel Indication This section describes the methods and assumptions used,for the flaw evaluation of the indication in the dryer support bracket guide channel at 215.

4.2.1 Assumptions The following assumptions are used for the subject flaw evaluation:

1. The flaw exists in the base metal and is oriented perpendicular to the weld and heat affected zone (HAZ); therefore, it has the characteristics of a fatigue crack.
2. The flaw configuration is adequately modeled as a center crack in an infinite plate.
3. The mode I stress intensity factor (K1) is expected to be small; therefore, a plastic zone size correction is not included in the LEFM solution.
4. The alternating stress intensity factor used for calculation of FCG, AK1 , is obtained from the range of alternating stress intensity contributed by FIV loading only.
5. The subject geometry is a thin plate; therefore, the stress state will be characterized by a plane stress condition. This will result in one of the three principal stresses being close to zero. In this case it is conservative to assume the crack driving force is bounded by the ASME B&PV Code defined stress intensity acting as a membrane stress along the entire surface of the crack face. The stress intensity will always be equal or larger to the largest principal stress component for this configuration. Further, for plates, the through-wall stress distribution will exhibit tensile stresses on one side and compressive stresses on the opposite side. This stress distribution suggests that the flaw would likely not grow through-wall.
6. System thermal cycles, seismic and hydraulic loads contribute an insignificant number of cycles during the next operating period; therefore, they make a negligible contribution to FCG compared to FIV loading and are not calculated here.

Report No. 0800760.401.Rev 1. 4-5 R0 StructuralIntegrityAssoclates, Inc.

7. Deadweight, static thermal loads, differential pressure, and weld residual stresses contribute to the mean KI rather than AK1 ; therefore, they are considered only in the selection of a conservative R-ratio and not specifically considered in calculation of a mean KQ. Assuming an R-ratio of 1 incorporates the maximum effects of mean stress on the expected FCG of the steam dryer indications.

4.2.2 Methods The flaw evaluation of the subject indication is performed using the following methods:

1. The EPU FIV range of alternating stress intensities output from the existing uncracked FEM of the Monticello steam dryer for a region 12" wide by 6" high around the flaw location are reviewed. A bounding range of alternating stress intensity is selected.
2. The range of stress intensity factor experienced as a result of the EPU FIV loading is calculated using a center cracked panel solution for a uniform membrane stress distribution [9]:

Membrane Stress: K, = o-. 5 (3)

Where: c is a uniform stress distribution, ksi a is the crack half length, in Figure 4-4 illustrates the flaw configuration for which Equation (3) is applicable.

3. The FCG growth expected during the next operational cycle is determined using the methods contained in Article C-3000 of the ASME B&PV Code,Section XI. Note that since the flaw exists in the base metal and is not considered to be IGSCC, no SCC growth must be calculated.

Report No. 0800760.401 .Rev 1 4-6 StructuralIntegrityAssoclates,Inc,

4.3 Drain Channel "F" Access Hole Cover Plate Indications This section describes the methods and assumptions used for the flaw evaluation of the indications in the drain channel access hole cover plate.

4.3.1 Assumptions The following assumptions are used for the subject flaw evaluation:

1. The flaws exist only in the weld HAZ and remain around the perimeter of the access hole cover plate; therefore, they are expected to caused by IGSCC.
2. The cover plate does not appear on fabrication drawings of the steam dryer; therefore the exact dimensions are not known. The assumed dimensions and extent of cracking used for the previous flaw evaluation [5] and shown in Figure 2-7 are used here as well.
3. The flaw configuration is adequately modeled as a center crack in an infinite plate.
4. The mode I stress intensity factor (K 1 I) is expected to be small; therefore, a plastic zone size correction is not included in the LEFM solution.
5. The alternating stress intensity factor used for calculation of FCG, AK4, is obtained from the alternating stress intensity contributed by FIV loading only.
6. The subject geometry is a thin plate; therefore, the stress state will be characterized by a plane stress condition. This will result in one of the three principal stresses being close to zero. In this case it is conservative to assume the crack driving force is bounded by the ASME B&V Code defined stress intensity acting as a membrane stress along the entire surface of the crack face. The stress intensity will always be equal or larger to the largest principal stress component for this configuration. Further, for plates, the through-wall stress distribution will exhibit tensile stresses on one side and compressive stresses on the opposite side. This stress distribution suggests that the flaw would likely not grow through-wall.
7. System thermal cycles, seismic and hydraulic loads contribute an insignificant number of cycles during the next operating period; therefore, they make a negligible contribution to FCG compared to FIV loading and are not calculated here.
8. Deadweight, static thermal loads, differential pressure, and weld residual stresses contribute to the mean KI rather than AKI; therefore, they are considered only in the Report No. 0800760.401.Rev 1 4-7  ! StructuralIntegrity Associates, Ine.-

selection of a conservative R-ratio and not specifically considered in calculation of a mean KI. Assuming an R-ratio of 1 incorporates the maximum effects of mean stress on the expected FCG of the steam dryer indications.

4.3.2 Methods The flaw evaluation of the subject indications is performed using the following methods:

1. The EPU FIV range of alternating stress intensities output from the existing uncracked FEM of the Monticello steam dryer for a region approximately equivalent to the assumed dimensions of the cover plate are reviewed. A bounding range of alternating stress intensity is selected.
2. The bounding range of alternating stress intensity is conservatively scaled by a weld factor of 1.8 to incorporate peak stress effects.
3. The range of stress intensity factor experienced as a result of the EPU FIV loading is calculated using the center cracked panel solution for a uniform stress distribution given by Equation (3).
4. Both the IGSCC growth and FCG expected during the next operational cycle are evaluated:
a. The expected FCG growth is determined using the methods contained in Article C-3000 of the ASME B&PV Code,Section XI.
b. The expected IGSCC crack growth for each indication is calculated assuming a 100% capacity factor, a two year fuel cycle, and the bounding IGSCC growth rate of 5E-5 in/hr per crack tip.
5. The ability of the cover plate remaining ligament to react the operational loads is assessed using plastic collapse as the failure mechanism and the EPU faulted RIPD [7] as the bounding load. This approach is consistent with the previous flaw evaluation [5].

..Report No.. 080.07,60AOI.Rdv. I 4-8 e StructuralIntegrityAssociates, Inc.

Iigurc 4-I. Stress Intensity Factor Solution fbr an Edge Cracked Semi-Infinite Plate wiIli Unifitbn Stress [9].

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Figure 4-2. Stress Intensity FIactor Solution for an Edge Cracked Semi-Infinite Plate with Linearly Varying Crack Frice Traction 19].

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Figure 4-3. Stress Intensity Factor Solution for an Edge Cracked Semi-hininite Plate with Point Load Applied at an Arbitrary D)istance Along Crack Face [9].

Report No. 0800760.401 .Rev I 4-11 SirucluratIntegrity Associates, Inc.

Figurc 4-4. Stress Intensity Factor Solution for a Center Cracked Panel [9].

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5.0 FLAW EVALUATION RESULTS This section presents the results of the flaw evaluations for the flaws summarized in Section 3.0.

5.1 V3 90, V10 90, V10 270' Indications Appendix A tabulates the range of alternating nodal stress intensity output from the Monticello steam dryer uncracked FEM for the EPU FIV load case for the V3 90', VI0 90, and VI0 270' flaw locations. Each table in this Appendix lists the stress intensity output from every dryer component connected to the origin of the observed flaw for the shell elements used to model the steam dryer at the top, middle, and bottom surfaces of the element. The nodal stress intensities are averaged within the element but not across components. The maximum stress intensities occurred at the bottom surfaces of the elements at each flaw location.

Figures 5-1 through 5-3 plot the distribution of nodal stress intensity at each flaw location with respect to the global Z-axis. Figures 5-1 through 5-3 summarize the data contained in Appendix A. The global Cartesian coordinate system origin is placed at the center of the steam dryer at the elevation of the top of the upper support ring. The Z-axis is oriented along the vertical axis of the RPV, the X-axis is oriented parallel to the line bisecting the pairs of main steam nozzles, and the Y-axis is orthogonal to the X and Z-axes. Stresses for the first 12" away from the origin of each crack are shown so that the behavior of the range of alternating stress intensity factor could be determined for each flaw for dimensions greater than those reported in the INR. This is done to assess the expected FCG rate.

Figure 5-4 illustrates the bounding composite stress intensity distribution formed from the stress intensity distributions given in Figures 5-1 through 5-3. Also shown on Figure 5-4 is the stress intensity distribution, is conservatively scaled by a weld factor of 1.8 to include peak stress effects. Figure 5-5 is the scaled bounding composite stress intensity distribution expressed with.

respect to an origin placed at the free surface of the edge crack. Also shown on this figure are the stress intensity distributions used with Equation (1c) and the polynomial stress intensity distribution used with Equation (2c). Table 5-1 lists the nodal stress intensity values plotted in Figures 5-4 and 5-5.

Report No. 0800760.401.Rev 1 5-1 V StructuralIntegrityAssociates, Inc,

Table 5-2 summarizes the range of alternating stress intensity factors calculated for the indications in the V3 and VI0 welds for various crack lengths. The numerical integration performed to evaluate Equation (2c) was performed using a db=0.001 in. The small differential crack face length was chosen to reduce numerical error in the integration. The longest flaw at this location, shown in Table 2-1, is 1.375". All crack lengths considered in the LEFM calculation (2.6", 5", 10.3") are longer than the maximum observed flaw length in the subject welds. For a conservative flaw length of 2.6", the range of alternating stress intensity factor is less than 3 ksi-in0 .5. The flaw lengths of 2.6" and 10.3" were chosen based upon the mesh density of the uncracked model and were a convenient dimension to determine the stress intensity distributions needed for Equation (Ic). The AKI for a 10.3" flaw is also shown to be less than 3 ksi-in°'5 using the Method 2 solution.

These results indicate that the stress distribution in this component produces a stable K field that does not exhibit a significant increase in crack driving force as a flaw increases in length.

Further, review of the FCG growth correlations for Austenitic stainless steel in an air environment given in Figure C-8410-1 shows that, for an R ratio of 0.9 (the largest given in this figure), insignificant fatigue crack growth occurs for a AKI < 3 ksi-in0 ° 5. The analytical results taken into consideration with the previous field experience for these indications as well as similar indications in other steam dryers support the conclusion that the indications observed in the V3 and V10 vertical welds will not propagate further during the next operational cycle. Although further crack growth is considered to be unlikely, SI recommends that these indications, as well as the equivalent location in the uncracked weld V3-270, be inspected during the next refueling outage to monitor any possible change in crack length.

Report No. 0800760.401.Rev I 5-2 RN StructuralIntegrityAssociates, Inc.

5.2 215" Dryer Support Bracket Guide Channel Indication Table 5-3 summarizes the maximum range of alternating stress intensity and AKI from the 12" x 6" region around the guide channel indication. The maximum AKI predicted for this flaw location for a flaw length of 0.75" (a=0.375") is 0.43 ksi-in° 5 . Review of the FCG growth correlations for Austenitic stainless steel in an air environment given in Figure C-8410-1 shows that, for an R ratio of 0.9 (the largest given in this figure), insignificant fatigue crack growth occurs for a AK, < 3 ksi-in°'5.

These analytical results taken into consideration with the previous field experience for this indication as well as similar indications in other steam dryers support the conclusion that the indication observed in Guide Channel will not propagate further during the next operational cycle. Although further crack growth is considered to be unlikely, SI recommends that this indication be inspected during the next refueling outage to monitor any possible change in crack length.

5.3 Drain Channel "F" Access Hole Cover Plate Indications Recognizing that th6 flaws observed in this component exhibit characteristics of IGSCC, a crack growth contribution from IGSCC is calculated for the next operational cycle and given below as:

Aacscc = 2yr.365.25 days.24 hr -5E-5 in-2 tips 1.75 in yr day hr flaw flaw Table 5-3 summarizes the maximum range of alternating stress intensity and AK1 from the -10" x 8" region evaluated for the indications identified in the Access Hole Cover Plate. For a conservative flaw length of 10" (a=5") the predicted AKI = 1.72 ksi-in0 5 . Note that the largest flaw is 8" assuming that multiple flaws on the top of the cover plate coalesce during the next cycle. Review of the FCG growth correlations for Austenitic stainless steel in an air environment given in Figure C-8410-1 shows that, for an R ratio of 0.9 (the largest given in this figure), insignificant fatigue crack growth occurs for a AKI < 3 ksi-in°'5.

Report No. 0800760.401.Rev I 5-3 pR StructuralIntegrityAssociates, Ina

Given the indication dimensions shown in Figure 2-7 there is expected to be approximately 10" of uncracked ligament remaining around the perimeter of the access hole cover plate at the end of the next operational cycle. Also given that the EPU RIPDs listed in Reference [7] are bounded by the CLTP RIPDs considered in the previous flaw evaluation for this indication [5],

the conclusions regarding the ability of the remaining ligament to react the applied operating load without collapse remain valid. The access hole cover plate is not expected to fail and will not become a loose part during the next operational cycle.

1 2.6 1.38 (See Equation 1c) 10.3 1.49 2.6 -

2 (See Equation 2c) 10.3

1. M refers to constant stress distribution
2. B refers to linearly varying stress distribution Report No. 0800760.401.Rev I 5-4 t StructuralIntegrityAssociates, Inc

Table 5-3. Sumnmary ol'Alternating Stress Ihntcisity IFactor ibr Guide Bracket and Access Ilole Cover Plate Indications.

Crack Length, 0, AKI 82, Component in psi ksi-in's.

215" Dryer Support Bracket 0,75 400 0.43 Guide Channel Access Ilolc Cover Plate'1 2 10 435 1.72

1. Weld factor of I.8 is conservatively applied to FUTM stress outpIut.
2. Crack half lengthi is 5".

V3-90 (Node 145891) - Bottom w o - -- - - --- -- -- --- - - - -

.-- r - --- - ---

500 -------- ------------------ ------- --------

I,ý 0

40 --- - - -- - -- -- T L- - - - I -- - - I-

-- - - - L 400 0

Figurei-l ~ ~ ..... tesInest

...... Dsrbton o 3-0 lw Aai 50 52 S4 56 58 60 62 Z-Axis Location, in MsddICIIoodAO 4 MiddIIITopCf,.wrAB StearnDani Midd1kiicadOutil'stA fod - a - Composite SI I iur po e t.t .. -00

-b --. f Fa Report No. 0800760.401.1tev I 5 -5 e. StructuralIntegrity Associates, Inc.

V1O-90 (Node 145892) - Bottom 700 4

I I

r- ..........r..?. . .

I I

I I

I 600 ----..... * ,---------------------------~

I e I 200 ........ .. ... "I, ...--- . . .--. .' ---.. . . -- -Ir . .......

.I .. "*... ......

  • I I ...

200--------

+.....

oI 5 5 ,I

, I

,-..F-*-..

  • S 10--- - ' ,

50 52 54 5 58 60 62 Z-Axis Location, in MiddleHoodAB 4- Middle TopCoverAfl SteamDam MiddleHolOuteratti -- a- En(iWall -,,iComposite SINT Figure 5-2. Component Stress Intensity Distribulions for VI 0-90 Flaw Location.

V10-270 (Node 138089) - Bottom 700 ---------.-.--- -- v -- ------ r -------- "i--------r --------

i, I 600---------- -------- I------ ------- -

s 5 5 5I 0 0.

Ifl 0 I I "v 300 ..........---....- 0 -. 1 - .

-AL ý..... -- -

I I I S II ' I 5 50 52 54 56 58 60 62 Z-Axis Location, in MidldleHoodCD x Mij~leyTopCoveWCD Steam Dam Middlel-IodOuteil'it0 - EndWoll -0 Compo*ite SINT Figure 5-3. Compolcnt Stress Intensity Distributions for V 10-270' Flaw Location.

Report No. 080076 0.401 .Rev I 5-6 V StructuralIntegrityAssociates, Inc.

Composite Stress Distributions, V3 &VIO Flaw Locations 1200 .

  • II I
  • I II 00 0 . --------.. "-----.--

.. -I ..

1ý000 400 6 ---- ----- o, ... .. "l ------

0 -!o -

50 52 54 5 58 60 62 Z-Axis Location, in V3 -90, psi - V10-90' psi V10-270, psi Overall Composite, psi Overall Comp w/ SCF, psi Figure 5-4. ('omposite Stress; Intensity Distributions for all I-law Localions.

Composite Stress Distribution, V3 &V10 Flaw Location 1200 -------- -------- T -------- r---------------- r ------

y= -1.8422x +41.956xW-320.66x+ 1078,1 1000 111= 0.9604""

60 0 ------- - -- -- - - - -..- -. -- .. -. -..- - . - .. -. -.

z 400 10 0 -- - - ---- 4----- - -- -- -- -- -- -1 00 .... ... -------

0 2 4 6 8 10 12 Crack Length, in a=2.6in.: Pm=431psi, Pb=664psi a= 10.3 in.: Prn = 233 psi, Pb = 863 psi Figure 5-5. Scaled (Composite Stress Intensity Distributions for all Flaw Locations, corrected to lFlaw Origin and ('urve-fit.

Report No. 0800760.401.Rev I 5-7 StructuralIntegrityAssociates, Inc.

6.0 VIBRATION ASSESSMENT This section documents the vibration assessment performed for the cracking observed during the 2005 and 2007 inspections. Each flaw is addressed separately below.

6.1 V3 90, V10 90, V10 270" Indications Observation of the INRs, contained as Attachments I through 4, demonstrates the following:

1. The cracks are very short (less than 2" long).
2. The vertical plates are attached to the inner hoods with a double sided fillet weld
3. The cracking exists in only one of the two fillet welds for two of the three plates. The third plate shows cracking in both fillet welds for 1/4 inch only.

The short crack lengths are considered to be insignificant with respect to the overall plate dimensions; therefore, existence of cracking is also considered to introduce an insignificant effect on the boundary conditions applied to the plate. Further, even if one fillet weld is cracked, the second fillet weld restrains motion of the plate preserving the boundary condition. For the one plate that exhibits cracking in both fillet welds, it should be noted that the weld configuration and orientation is such that lateral vibration of the plates would tend to close the crack imposing a boundary condition on the plate similar to that contributed to an uncracked weld. The existence of short cracking in the V3 and V10 welds does not affect the significant modes of vibration of the affected plates, since the vibration frequency is governed by the short length of the plate and the indication is along the long edge of the plate..

6.2 215" Dryer Support Bracket Guide Channel Indication The flaw in this component is approximately W"long. Existence of a single small crack in a long channel with length significantly greater than the crack length will cause an insignificant effect on the global stiffness of the component and consequently have no effect on the significant modes of vibration of the channel.

Report No. 0800760.401.Rev 1 6-1 StructuralIntegrityAssociates, Inc

6.3 Drain Channel "F" Access Hole Cover Plate Indications Figure 2-7 shows cracking oriented normal to and parallel with the weld seam at the boundary of the plate. Cracks running along the plate effectively removes the boundary condition at the edge of the plate for the length of the crack; however, the cracks are bounded at each side by uncracked plate material which ensures that the cracked section of plate is effectively restrained along the original boundary. For short cracking, as observed at Monticello, any effect on mode shape and frequency of the plate would only be expected at very high modes with associated natural frequencies above the frequency band of concern for FIV.

For the cracks oriented normal to the weld seam, it is possible that the loss of membrane stiffness at the crack location could affect the normal modes of the plate for longer cracks located at locations of high modal displacement. However, note that the cover plate is located close to the boundary of the plate. The plate boundary requires that the modal displacements all along the boundary be zero; therefore, for short cracks close to the plate boundary the modal displacements will be negligible. The loss of stiffness local to the crack and close to the boundary will not affect the normal modes of the plate.

Report No. 0800760.401.Rev I 6-2 p Structural IntegrityAssociates, Inc.

7.0 CONCLUSION

S Given the inspection history of the subject indications, the operating experience for this and other BWR steam dryers with similar indications, and the LEFM results documented in this report, the following conclusions are made:

1. The subject indications are not expected to exhibit further fatigue crack growth.
2. The IGSCC indications in the access hole cover plate are predicted to experience further IGSCC growth; however, the ligament remaining at the end of the next operational cycle is adequate to react the applied loading and prevent collapse of this component.
3. None of the indications considered in this evaluation have the potential to create loose parts during the next operational cycle.
4. All indications should be inspected during the next refueling outage to establish current flaw dimensions.
5. The uncracked vertical weld, V3-270', should be inspected during the next refueling outage.

Further, the short cracks observed in the Monticello steam dryer will not affect the vibration response of the steam dryer sufficiently such that the FEM created for the EPU stress analysis needs to be modified to incorporate cracking.

Report No. 0800760.40l.Rev I 7-1: Re Structural Integrily Associates, Inc.

8.0 REFERENCES

1. BWRVIP-139: BWR Vessel and Internals Project, Steam Dryer Inspection and Flaw Evaluation Guidelines, EPRI, Palo Alto, CA, 2005. 1011463.
2. Monticello RFO-22 Steam Dryer In-Vessel Visual Inspection Final Report. AREVA.

2005, SI File No. 0800760.204.

3. Monticello RFO-23 Steam Dryer In-Vessel Visual Inspection Final Report. AREVA.

2007, SI File No. 0800760.204.

4. Structural Integrity Associates Report No. SIR-05-078, "Assessment of the Monticello Steam Dryer Inspection Results," March 11, 2005, SI File No. 0800760.202.
5. Engineering Evaluation 10451 contained in Design Information Transmittal EPU-0284, SI File No. 0800760.201.
6. Monticello Steam Dryer Extended Power Uprate FIV stresses, SI File No. 0800760.203.
7. Peters, S. "Task T0304: Reactor Internal Pressure Differences, Fuel Lift Margin, CRGT Lift Force, Acoustic and Flow Induced Loads," GEH, GE-NE-0060-9039-TR-RO. August 2007. GEH Proprietary Information. SI File No. 0800760.201P.
8. Nuclear Management Company Design Information Transmittal EPU-0284. September 30, 2008. Monticello Unit 1, SI File No. 0800760.201.
9. Tada, Hiroshi, and Paul C. Paris, George R. Irwin. The Stress Analysis of Cracks Yd3 Edition. New York: ASME, 2000.

Report No. 0800760.401.Rev 1 8-1 StructuralIntegrityAssociates, Inc.

APPENDIX A MONTICELLO STEAM DRYER FINITE ELEMENT MODEL EPU FIV RANGE OF ALTERNATING STRESS INTENSITY OUTPUT AT ALL FLAW LOCATIONS Report No. 0800760.401.Rev I A-1 StructuralIntegrityAssoclates, Inc.

Notes:

1. ICOMP is the component number
2. BMU (bottom, middle, upper) indicates which level the stress is recorded at
3. xyz - physical location of the node, in
4. nx, ny, nz - shell normal (pointing from bottom to top of shell) for the given component
5. sxx -szx - the range of alternating stress components, psi
6. SINT - the range of alternating stress intensity, psi
7. X and Y coordinate values not shown in Tables A-2 through A-4 because all data is extracted along a vertical line parallel to the Z axis.

Table A-I. ANSYS Cc U FIV Load Case Stress Intensity Output 11 0.5 MiddleHoodAB 35 35 37 0.5 MiddleTopCoverAB 49 48 52 0.5 SteamDam 216 215 224 0.5 MiddleHoodOuterPartA 221 220 230 0.5 EndWall ReportNo. 0800760.401.Rev 1 A-2 R4StructuralIntegrityAssociates, Ina

Report No. 0800760.401.Rev 1 A-3 ! StructuraiinlegrilyAssociates,Inc.

Report No. 0800760.401.Rev 1 A-4 t StructuralIntegrityAssociates, Inc.

Table A-2. V3 90" FEM Stress Intensity Output - EPU FIV Load Case, cont 144457 31 3 51.3 1 0 0 0.0 -80.4 -21.0 0.0 -0.8 0.0 80.5 145704 31 3 53.8 1 0 0 0.0 -90.4 -19.9 0.0 -2.0 0.0 90.5 141663 31 3 56.4 1 0 0 0.0 -142.8 -27.1 0.0 10.2 0.0 143.7 141662 31 3 58.9 1 0 0 0.0 -143.0 -16.0 0.0 18.7 0.0 145.7 145891 31 3 61.5 1 0 0 0.0 95.6 129.0 0.0 -40.1 0.0 155.7

-7 -7ý -7 7..-. - -

145891 35 3 61.5 0 0 1 385.9 150.4 0.0 22.4 0.0 0.0 388.0 145891 49 3 61.5 0 -1 0 44.0 0.0 86.7 0.0 0.0 -20.4 94.8 144457 216 3 51.3 1 0 0 0.0 -75.4 -19.3 0.0 -8.4 0.0 76.6 145704 216 3 53.8 1 0 0 0.0 -99.3 -22.0 0.0 -16.2 0.0 102.5 141663 216 3 56.4 1 0 0 0.0 -217.2 -61.6 0.0 -19.9 0.0 219.7 141662 216 3 58.9 1 0 0 0.0 -228.6 -46.0 0.0 2.6 0.0 228.7 145891 216 3 61.5 1 0 0 0.0 109.1 142.7 0.0 36.8 0.0 166.4 144457 221 3 51.3 0 1 0 0.5 0.0 6.2 0.0 0.0 10.3 21.4 145704 221 3 53.8 0 1 0 -10.9 0.0 10.6 0.0 0.0 12.6 33.1 141663 221 3 56.4 0 1 0 -62.2 0.0 -4.8 0.0 0.0 11.2 64.3 141662 221 3 58.9 0 1 0 -31.6 0.0 -13.4 0.0 0.0 21.0 45.8 145891 221 3 61.5 0 1 0 -231.3 0.0 -43.7 0.0 0.0 101.8 276.9 Max 61.5 Min 51.25 Range 10.25 Report No. 0800760.401.Rev 1 A-5 e1StructuralIntegrilyAssociates, ina

Report No. 0800760.401.Rev 1 A-6 StructuralIntegrity Associates,Ina Table A-3. V10 90" FEM Stress Intensity Output - EPU FIV Load Case, cont.

142894 31 2 51.3 0 0 0.0 -3.1 2.5 0.0 0.5 0.0 5.7 142893 31 2 53.8 1 0 0 0.0 -1.8 7.0 0.0 0.0 0.0 8.9 142899 31 2 56.4 1 0 0 0.0 -0.9 12.7 0.0 -2.2 0.0 14.2 142898 31 2 58.9 1 0 0 0.0 2.5 17.8 0.0 -6.9 0.0 20.7 145892 31 2 61.5 1 0 0 0.0 -5.2 19.9 0.0 -14.1 0.0 37.8 145892 35 2 61.5 0 0 1 -116.1 -16.9 0.0 -0.7 0.0 0.0 116.1 145892 48 2 61.5 0 -1 0 -133.2 0.0 -11.4 0.0 0.0 -71.3 187.6 142894 215 2 51.3 1 0 0 0.0 -2.5 2.6 .0.0 4.5 0.0 10.3 142893 215 2 53.8 1 0 0 0.0 -1.9 7.0 0.0 4.5 0.0 12.7 142899 215 2 56.4 1 0 0 0.0 -0.4 13.1 0.0 4.5 0.0 16.2 142898 215 2 58.9 1 0 0 0.0 1.2 22.0 0.0 6.6 0.0 24.7 145892 215 2 61.5 1 0 0 0.0 13.9 27.0 0.0 18.3 0.0 39.8 142894 220 2 51.3 0 -1 0 3.1 0.0 4.6 0.0 0.0 3.2 7.1 142893 220 2 53.8 0 -1 0 4.8 0.0 9.8 0.0 0.0 2.7 11.0 142899 220 2 56.4 0 -1 0 7.1 0.0 16.8 0.0 0.0 9.1 22.3 142898 220 2 58.9 0 -1 0 20.6 0.0 3.4 0.0 0.0 26.3 55.3 145892 220 2 61.5 0 -1 0 -121.0 0.0 -0.7 0.0 0.0 111.8 253.8 Report No. 0800760.40 I.Rev 1 A-7 e SArocluralIntegrily Associates, Ina

Table A-3. VI0 90" FEM Stress Intensity Output -EPU FIV Load Case, cont

~ ~.. '~Rst *jK-'ý Syy Sn 'R-142894 31 3 51.3 1 0 0 0.0 -22.1 -3.6 0.0 -11.0 0.0 28.7 142893 31 3 53.8 1 0 0 0.0 -34.2 -3.8 0.0 -9.4 0.0 36.8 142899 31 3 56.4 1 0 0 0.0 -74.2 -8.2 0.0 -12.8 0.0 76.6 142898 31 3 58.9 1 0 0 0.0 -90.3 6.3 0.0 -6.9 0.0 97.5 145892 31 3 61.5 1 0 0 0.0 136.9 131.2 0.0 52.5 0.0 186.6 145892 35:-- 3 61.5 0 0 1 364.0 135.0 0.0 -18.6 0.0 _.....

0.0 365.5 4~~ ..............  :'

iY'7 145892 48 3 61.5 0 -1 0 -321.6 0.0 -107.6 0.0 0.0 -102.6 362.8 142894 215 3 51.3 1 0 0 0.0 -82.8 -22.2 0.0 -7.5 0.0 83.7 142893 215 3 53.8 1 0 0 0.0 -98.7 -24.3 0.0 -2.5 0.0 98.8 142899 215 3 56.4 1 0 0 0.0 -149.5 -47.4 0.0 0.7 0.0 149.5 142898 215 3 58.9 1 0 0 0.0 -172.0 -18.3 0.0 2.4 0.0 172.0 145892 215 3 61.5 1 0 0 0.0 90.1 127.1 0.0 -25.5 0.0 140.1

_____ ,* WŽZ L .. ..

142894 220 3 51.3 0 -1 0 -61.8 0.0 -14.0 0.0 0.0 -9.4 63.6 142893 220 3 53.8 0 -1 0 -60.5 0.0 -8.7 0.0 0.0 -6.4 61.3 142899 220 3 56.4 0 -1 0 -87.3 0.0 o -12.4 0.0 0.0 -0.6 87.3 142898 220 3 58.9 0 -1 0 -67.6 0.0 -23.0 0.0 0.0 19.8 75.1 145892 220 3 61.5 0 -1 0 -301.7 0.0 -65.8 0.0 0.0 102.4 339.9 Max 61.5 Min 51.25 Range 10.25 Report No. 0800760.40 I.Rev 1 A-8 e1 StructuralIntegrity Associates, Ina.

Table A-4. V1 0 270" FEM Stress Intensity Output- EPU FIV Load Case 139141 33 1 51.3 -1 0 0 0.0 -40.0 -12.0 0.0 32.5 0.0 70.7 139142 33 1 53.8 -1 0 0 0.0 -32.0 -14.3 0.0 24.2 0.0 51.6 139143 33 1 56.4 -1 0 0 0.0 -33.0 -18.3 0.0 9.6 0.0 37.7 139144 33 1 58.9 -1 0 0 0.0 -59.9 -2.6 0.0 -16.3 0.0 65.9 138089 33 1 61.5 -1 0 0 0.0 153.2 48.8 0.0 -83.3 0.0 199.2 138089 37 1 61.5 0 0 1 608.0 153.7 0.0 -16.1 0.0 0.0 608.6

. . . ,,--.L 138089 52 1 61.5 0 -1 0 350.6 0.0 98.3 0.0 0.0 -112.6 393.5 139141 224 1 51.3 -1 0 0 0.0 -111.0 -32.6 0.0 42.1 0.0 129.4 139142 224 1 53.8 -1 0 0 0.0 -83.0 -31.8 0.0 38.1 0.0 103.3 139143 224 1 56.4 -1 0 0 0.0 -53.9 -32.2 0.0 12.9 0.0 59.9 139144 224 1 58.9 -1 0 0 0.0 -117.7 -26.7 0.0 5.2 0.0 118.0 138089 224 1 61.5 -1 0 0 0.0 99.2 42.8 0.0 65.4 0.0 142.3 139141 230 1 51.3 0 1 0 -76.3 0.0 -19.9 0.0 0.0 38.1 95.5 139142 230 1 53.8 0 1 0 -59.6 0.0 -;22.9 0.0 0.0 32.8 78.9 139143 230 1 56.4 0 1 0 -47.8 0.0 -28.6 0.0 0.0 20.6 60.9 139144 230 1 58.9 0 1 0 -74.0 0.0 -16.5 0.0 0.0 35.4 91.2 138089 230 1 61.5 0 1 0 32.3 0.0 -38.9 0.0 0.0 139.1 287.2 Report No. 0800760.401.Rev I A-9 R o StructuralIntegrityAssociates, Ina

Table A-4. V10 270" FEM Stress Intensity Output- EPU FIV Load Case, cont.

139141 33 2 51.3 -1 0 0 0.0 4.1 2.1 0.0 0.3 0.0 4.1 139142 33 2 53.8 -1 0 0 0.0 1.2 -4.8 0.0 -0.4 0.0 6.1 139143 33 2 56.4 -1 0 0 0.0 -1.5 -12.8 0.0 -2.3 0.0 13.2 139144 33 2 58.9 -1 0 0 0.0 -6.0 -18.9 0.0 -6.9 0.0 21.9 61.5 -1 0 0 0.0 2.0 -21.0 0.0 -14.5 0.0 37.0 138089 37 2 61.5 0 0 1 168.4 22.7 0.0 4.3 0.0 0.0 168.5 138089 52 2 61.5 0 -1 0 258.3 0.0 193.2 ......... 14.2 0.0 0.0 -93.1

-t - .......

139141 224 2 51.3 -1 0 0 0.0 2.8 1.9 0.0 7.6 0.0 15.3 139142 224 2 53.8 -1 0 0 0.0 0.7 -5.0 0.0 7.9 0.0 16.8 139143 224 2 56.4 -1 0 0 0.0 -3.4 -12.7 0.0 9.9 0.0 21.8 139144 224 2 58.9 -1 0 0 0.0 -4.8 -23.1 0.0 14.0 0.0 33.4 138089 224 2 61.5 -1 0 0 0.0 -16.3 -27.5 0.0 26.6 0.0 54.4 1-2,-'ýtg ý-5ý ii 139141 230 2 51.3 0 1 0 -3.1 0.0 0.2 0.0 0.0 4.8 10.1 139142 230 2 53.8 0 1 0 -0.2 0.0 -5.4 0.0 0.0 6.3 13.5 139143 230 2 56.4 0 1 0 5.9 0.0 -13.4 0.0 0.0 11.2 29.6 139144 230 2 58.9 0 1 0 -13.4 0.0 2.2 0.0 0.0 40.0 81.6 138089 230 2 61.5 0 1 0 166.5 0.0 6.2 0.0 0.0 136.9 317.3 Report No.. 0800760.401.Rev 1 A-10 e StructuralIntegrityAssociates, Inc.

Table A-4. V1O 270" FEM Stress Intensity Output - EPU FIV Load Case, cont.

139141 33 3 51.3 1 0 0 0.0 48.1 16.3 0.0 -31.9 0.0 71.2 139142 33 3 53.8 -1 0 0 0.0 34.4 4.6 0.0 -25.0 0.0 58.2 139143 33 3 56.4 -1 0 0 0.0 30.0 -7.2 0.0 -14.2 0.0 46.8 139144 33 3 58.9 -1 0 0 0.0 48.0 -35.2 0.0 2.5 0.0 83.3 138089 33 3 61.5 -1 0 0 0.0 -149.2 -90.7 0.0 54.2 0.0 181.6 138089 37 3 61.5 0 0 1 -271.3 -108.3 0.0 24.7 0.0 0.0 275.0 138089 52 3 61.5 0 -1 0 35.8 0.0 -69.9 0.0 0.0 -73.7 181.3 139141 224 3 51.3 1 0 0 0.0 116.7 36.5 0.0 -26.9 0.0 124.9 139142 224 3 53.8 1 0 0 0.0 84.3 21.7 0.0 -22.3 0.0 91.5 139143 224 3 56.4 1 0 0 0.0 47.2 6.8 0.0 6.8 0.0 48.3 139144 224 3 58.9 1 0 0 0.0 108.2 -19.5 0.0 22.7 0.0 135.5 138089 224 3 61.5 -1 0 0 0.0 -131.7 -97.8 0.0 -12.1 0.0 135.6 Z- i- -5:;- F 139tL~

139141 230 3 51.3 0 1 0 70.1 0.0 20.3 0.0 0.0 -28.6 83.1 139142 230 3 53.8 0 1 0 59.1 0.0 12.1 0.0 0.0 -20.3 66.7 139143 230 3 56.4 0 1 0 59.7 0.0 1.8 0.0 0.0 1.8 59.7 139144 230 3 58.9 0 1 0 47.2 0.0 21.0 0.0 0.0 44.7 93.1 138089 230 3 61.5 0 1 0 300.7 0.0 51.4 0.0 0.0 134.8, 367.1 Max 61.5 Min 51.25 Range 10.25 Report No. 0800760.401.Rev I A-1 1 R1StructuralInlegrilyAssociates, In.

Table A-5. Guide Channel FEM Stress Intensity Output - EPU FIV Load Case icm .MU znod I, y1 z:e ni fl zx , sy sz sxy sz zx S 138631 357 1 -55.75 -83.32 -57.63 -0.545 -0.838 0.000 -214.16 -90.68 -77.45 139.36 -1.25 1.92 304.86 138631 357 2 -55.75 -83.32 -57.63 -0.545 -0.838 0.000 2.67 1.13 15.33 -1.74 -2.21 3.39 16.61 138631 357 3 -55.75 -83.32 -57.63 -0.545 -0.838 0.000 219.50 92.94 108.11 -142.83 -3.16 4.85 312.60 138635 357 1 -55.75 -83.32 -54.91 -0.545 -0.838 0.000 -243.83 -103.25 -88.27 158.67 -1.58 2.42 347.11 138635 357 2 -55.75 -83.32 -54.91 -0.545 -0.838 0.000 3.52 1.49 17.54 -2.29 -2.02 3.11 18.55 138635 357 3 -55.75 -83.32 -54.91 -0.545 -0.838 0.000 250.86 106.23 123.35 -163.24 -2.46 3.79 357.18 138636 357 1 -55.75 -83.32 -52.20 -0.545 -0.838 0.000 -271.63 -115.01 -99.99 176.75 -1.40 2.15 386.66 138636 357 2 -55.75 -83.32 -52.20 -0.545 -0.838 0.000 4.30 1.82 18.24 -2.80 -1.47 2.26 18.81 138636 357 3 -55.75 -83.32 -52.20 -0.545 -0.838 0.000 280.23 118.65 136.46 -182.34 -1.53 2.36 398.91 116917 357 1 -53.60 -84.72 -55.07 -0.524 -0.852 0.000 -104.58 -42.18 -31.64 66.39 9.46 -14.96 149.38 116917 357 2 -53.60 -84.72 -55.07 -0.524 -0.852 0.000 3.34 1.34 13.28 -2.12 -1.35 2.10 13.95 116917 357 3 -53.60 -84.72 -55.07 -0.524 -0.852 0.000 111.27 44.87 58.20 -70.63 -12.16 19.15 161.09 116869 357 1 -53.60 -84.72 -57.76 -0.524 -0.852 0.000 -94.37 -38.05 -31.80 59.90 10.19 -16.13 135.88 116869 357 2 -53.60 -84.72 -57.76 -0.524 -0.852 0.000 2.18 0.88 8.75 -1.39 -0.85 1.30 9.15 116869 357 3 -53.60 -84.72 -57.76 -0.524 -0.852 0.000 98.72 39.82 49.31 -62.67 -11.88 18.72 143.70 Report No. 0800760.401.Rev 1 A-12 R Structural Integrity Associates, In.

116916 357 1 -53.59 -84.72 -52.37 -0.524 -0.852 0.000 -113.19 -45.65 -31.13 71.85 8.45 -13.35 160.71 116916 357 2 -53.59 -84.72 -52.37 -0.524 -0.852 0.000 4.42 1.77 16.79 -2.79 -1.34 2.08 17.34 116916 357 3 -53.59 -84.72 -52.37 -0.524 -0.852 0.000 122.02 49.18 64.70 -77.43 -11.12 17.51 175.04 116868 357 1 -51.43 -86.05 -55.32 -0.502 -0.865 0.000 35.74 12.56 25.52 -21.18 12.62 -21.10 63.99 116868 357 2 -51.43 -86.05 -55.32 -0.502 -0.865 0.000 2.62 0.95. 10.01 -1.58 1.29 -2.20 10.90 116868 357 3 -51.43 -86.05 -55.32 -0.502 -0.865 0.000 -30.50 -10.67 -5.50 18.03 -10.04 16.70 52.83 116867 357 1 -51.42 -86.06 -52.65 -0.502 -0.865 0.000 45.51 16.03 37.07 -27.00 11.17 -18.65 74.23 116867 357 2 -51.42 -86.06 -52.65 -0.502 -0.865 0.000 4.20 1.51 15.91 -2.51 0.77 -1.32 16.13 116867 357 3 -51.42 -86.06 -52.65 -0.502 -0.865 .0.000 -37.11 -13.02 -5.25 21.97 -9.63 16.02 58.41

    • '~iii!*i!%

!~iii * * :*  :. * -i'* ;,- ,.*::,*.., *** ** . .. ...

116837 357 1 -49.20 -87.34 -55.64 -0.480 -0.878 0.000 133.12 42.18 60.78 -74.90 9.42 -16.66 178.36 116837 357 2 -49.20 -87.34 -55.64 -0.480 -0.878 0.000 1.38 0.45 6.33 -0.79 4.79 -8.55 20.11 116837 357 3 -49.20 -87.34 -55.64 -0.480 -0.878 0.000 -130.37 -41.28 -48.12 73.33 0.16 -0.44 171.59 121460 361 1 -62.21 -78.61 -54.90 -0.628 -0.778 0.000 -8.74 -5.47 -20.83 6.91 2.82 -3.58 23.15 121460 361 2 -62.21 -78.61 -54.90 -0.628 -0.778 0.000 0.91 0.57 -15.53 -0.72 3.03 -3.84 19.62 121460 36i 3 -62.21 -78.61 -54.90 -0.628 -0.778 0.000 10.56 6.60 -10.23 -8.35 3.23 -4.10 29.31 Report No. 0800760.401.Rev 1 A-13 R1StructuralIntegrityAssociates, Inc.

137542 361 1 -60.63 -79.84 -57.63 -0.613 -0.790 0.000 -15.82 -9.51 -30.14 12.27 3.36 -4.33 33.72 137542 361 2 -60.63 -79.84 -57.63 -0.613 -0.790 0.000 1.17 0.71 -20.75 -0.91 3.84 -4.95 25.86 137542 361 3 -60.63 -79.84 -57.63 -0.613 -0.790 0.000 18.17 10.92 -11.36 -14.09 4.31 -5.56 42.84 140799 361 1 -60.63 -79.84 -54.91 -0.613 -0.790 0.000 -16.38 -9.84 -26.19 12.70 3.60 -4.64 32.08 140799 361 2 -60.63 -79.84 -54.91 -0.613 -0.790 0.000 1.00 0.60 -16.93 -0.78 4.03 -5.20 22.73 140799 361 3 -60.63 -79.84 -54.91 -0.613 -0.790 0.000 18.38 11.05 -7.67 -14.25 4.46 -5.75 39.85 142172 361 1 -60.63 -79.84 -52.20 -0.613 -0.790 0.000 -15.92 -9.57 -21.99 12.34 3.63 -4.68 29.92 142172 361 2 -60.63 -79.84 -52.20 -0.613 -0.790 0.000 0.86 0.52 -13.32 -0.67 4.03 -5.20 19.72 142172 361 3 -60.63 -79.84 -52.20 -0.613 -0.790 0.000 17.64 10.60 -4.65 -13.68 4.43 -5.71 35.93 125905 381 1 -60.14 -76.43 -55.54 0.619 0.786 0.001 8.81 5.47 11.32 -6.94 3.33 -4.23 18.38 125905 381 2 -60.14 -76.43 -55.54 0.619 0.786 0.001 -0.44 -0.26 2.99 0.34 2.99 -3.80 10.35 125905 381 3 -60.14 -76.43 -55.54 0.619 0.786 0.001 -9.68 -6.00 -5.34 7.62 2.65 -3.37 17.23 125904 381 1 -59.74 -76.74 -57.91 0.619 0.786 0.001 10.49 6.43 10.84 -8.21 2.38 -3.04 18.79 125904 381 2 -59.74 -76.74 -57.91 0.619 0.786 0.001 -1.01 -0.62 4.09 0.79 2.40 -3.06 9.66 125904 381 3 -59.74 -76.74 -57.91 0.619 0.786 0.001 -12.51 -7.68 -2.66 9.80 2.41 -3.08 21.02 137541 381 1 -58.89 -77.39 -57.63 0.611 0.792 0.000 13.94 8.30 12.31 -10.76 1.33 -1.73 22.70 Report No. 0800760.401.Rev I A-14 e1Structuralki tegrityAssociates, Ina

137541 381 2 -58.89 -77.39 -57.63 0.611 0.792 0.000 -0.96 -0.57 3.94 0.74 2.14 -2.77 8.89 137541 381 3 -58.89 -77.39 -57.63 0.611 0.792 0.000 -15.87 -9.45 -4.43 12.24 2.95 -3.82 26.37 140800 381 1 -58.89 -77.39 -54.91 0.611 0.791 -0.001 12.09 7.35 8.49 -9.42 2.39 -3.05 20.67 140800 381 2 -58.89 -77.39 -54.91 0.611 0.791 -0.001 -0.34 -0.19 1.72 0.26 2.76 -3.55 9.27 140800 381 3 -58.89 -77.39 -54.91 0.611 0.791 -0.001 -12.77 -7.73 -5.05 9.94 3.14 -4.05 22.04 142171 381 1 -58.89 -77.39 -52.20 0.617 0.787 -0.003 10.55 6.53 8.04 -8.30 3.61 -4.57 19.94 142171 381 2 -58.89 -77.39 -52.20 0.617 0.787 -0.003 0.12 0.08 0.57 -0.10 3.40 -4.32 11.00 142171 381 3 -58.89 -77.39 -52.20 0.617 0.787 -0.003 -10.32 -6.36 -6.90 8.10 3.19 -4.07 18.91 137542 388 1 -60.63 -79.84 -57.63 0.814 -0.581 0.000 -1.14 -2.24 -22.73 -1.60 -2.21 -1.57 23.10 137542 388 2 -60.63 -79.84 -57.63 0.814 -0.581 0.000 0.03 0.06 -21.56 0.05 -3.28 -2.34 23.11 137542 388 3 -60.63 -79.84 -57.63 0.814 -0.581 0.000 1.20 2.37 -20.39 1.69 -4.36 -3.11 26.24 140799 388 1 -60.63 -79.84 -54.91 0.814 -0.581 0.000 -1.39 -2.73 -18.83 -1.95 -2.37 -1.69 19.39 140799 388 2 -60.63 -79.84 -54.91 0.814 -0.581 0.000 0.00 0.00 -17.41 0.00 -3.44 -2.46 19.35 140799 388 3 -60.63 -79.84 -54.91 0.814 -0.581 0.000 1.39 2.72 -15.99 1.94 -4.52 -3.23 22.96 142172 388 1 -60.63 -79.84 -52.20 0.814 -0.581 0.000 -1.52 -2.99 -15.30 -2.13 -2.27 -1.62 15.98 142172 388 2 -60.63 -79.84 -52.20 0.814 -0.581 0.000 -0.02 -0.04 -13.74 -0.03 -3.38 -2.41 16.00 Report No. 0800760.40 LRev 1 A-15 t S1rucluralIntegrity Associates, Ina

142172 388 3 -60.63 -79.84 -52.20 0.814 -0.581 0.000 1.48 2.91 -12.18 2.07 -4.49 -3.20 19.90 137541 388 1 -58.89 -77.39 -57.63 0.814 -0.581 0.000 7.94 15.61 11.33 11.13 -5.85 -4.17 26.87 137541 388 2 -58.89 -77.39 -57.63 0.814 -0.581 0.000 0.01 0.03 4.24 0.02 -4.78 -3.41 12.47 137541 388 3 -58.89 -77.39 -57.63 0.814 -0.581 0.000 -7.91 -15.56 -2.86 -11.10 -3.71 -2.65 24.43 140800 388 1 -58.89 -77.39 -54.91 0.814 -0.581 0.000 5.91 11.62 7.64 8.29 -5.56 -3.96 21.02 140800 388 2 -58.89 -77.39 -54.91 0.814 -0.581 0.000 -0.02 -0.03 2.04 -0.02 -4.86 -3.47 12.12 140800 388 3 -58.89 -77.39 -54.91 0.814 -0.581 0.000 -5.95 -11.69 -3.56 -8.34 -4.16 -2.97 19.30 142171 388 1 -58.89 -77.39 -52.20 0.814 -0.581 0.000 4.09 8.04 4.15 5.74 -5.34 -3.81 15.82 142171 388 2 -58.89 -77.39 -52.20 0.814 -0.581 0.000 -0.04 -0.07 0.23 -0.05 -5.05 -3.60 12.40 142171 388 3 -58.89 -77.39 -52.20 0.814 -0.581 0.000 -4.17 -8.19 -3.69 -5.84 -4.75 -3.39 15.30 126858 388 1 -58.45 -76.78 -57.63 0.814 -0.581 0.000 15.53 7.90 15.07 -11.08 4.10 -5.74 27.45 126858 388 2 -58.45 -76.78 -57.63 0.814 -0.581 0.000 0.28 0.14 10.65 -0.20 2.81 -3.94 14.08 126858 388 3 -58.45 -76.78 -57.63 0.814 -0.581 0.000 -7.86 -15.45 2.52 -11.02 -2.88 -2.05 26.78 126857 388 1 -58.45 -76.78 -54.91 0.814 -0.581 0.000 14.57 7.41 11.58 -10.39 4.41 -6.18 25.98 126857 388 2 -58.45 -76.78 -54.91 0.814 -0.581 0.000 0.76 0.39 6.88 -0.54 3.31 -4.64 12.77 126857 388 3 -58.45 -76.78 -54.91 0.814 -0.581 0.000 -7.38 -14.51 -0.49 -10.35 -3.64 -2.59 23.20 Report No. 0800760.401.Rev 1 A-16 e1 StructuralIntegrilyAssociates, Ina

126859 388 1 -58.45 -76.78 -52.20 0.814 -0.581 0.000 13.90 7.07 8.44 -9.91 4.52 -6.33 24.69 126859 388 2 -58.45 -76.78 -52.20 0.814 -0.581 0.000 0.82 0.41 3.66 -0.58 3.81 -5.34 13.34 126859 388 3 -58.45 -76.78 -52.20 0.814 -0.581 0.000 -6.91 -13.59 -3.16 -9.69 -4.63 -3.30 22.21 126773 388 1 -56.56 -78.13 -54.30 -0.581 -0.814 0.000 15.12 7.69 14.56 -10.78 2.86 -4.01 25.10 126773 388 2 -56.56 -78.13 -54.30 -0.581 -0.814 0.000 0.57 0.29 8.86 -0.40 1.90 -2.66 10.33 126773 388 3 -56.56 -78.13 -54.30 -0.581 -0.814 0.000 -13.98 -7.11 3.15 9.97 0.94 -1.32 24.46 126776 388 1 -56.52 -78.17 -57.16 -0.581 -0.814 0.000 13.57 6.91 15.67 -9.68 3.01 -4.22 23.79 126776 388 2 -56.52 -78.17 -57.16 -0.581 -0.814 0.000 0.35 0.18 11.55 -0.25 1.34 -1.87 12.01 126776 388 3 -56.52 -78.17 -57.16 -0.581 -0.814 0.000 -12.88 -6.55 7.43 9.19 -0.34 0.47 26.89 138631 388 1 -55.75 -83.32 -57.63 -0.814 0.581 0.000 -25.95 -51.01 -8.22 -36.38 -2.04 -1.45 77.05 138631 388 2 -55.75 -83.32 -57.63 -0.814 0.581 0.000 0.41 0.80 14.66 0.57 -2.27 -1.62 15.21 138631 388 3 -55.75 -83.32 -57.63 -0.814 0.581 0.000 26.77 52.61 37.53 37.53 -2.50 -1.78 79.61 138635 388 1 -55.75 -83.32 -54.91 -0.814 0.581 0.000 -29.63 -58.23 -10.14 -41.54 -2.33 -1.66 87.97 138635 388 2 -55.75 -83.32 -54.91 -0.814 0.581 0.000 0.47 0.93 16.51 0.66 -2.01 -1.43 16.90 138635 388 3 -55.75 -83.32 -54.91 -0.814 0.581 0.000 30.57 60.09 43.16 42.86 -1.68 -1.20 90.75 Report No. 0800760.401 -Rev I A-17 o1 StructuralIntegrityAssociates, Ina

138636 388 1 -55.75 -83.32 -52.20 -0.814 0.581 0.000 -33.08 -65.02 -13.47 -46.38 -2.25 -1.60 98.18 138636 388 2 -55.75 -83.32 -52.20 -0.814 0.581 0.000 0.53 1.04 16.89 0.74 -1.51 -1.08 17.12 138636 388 3 -55.75 -83.32 -52.20 -0.814 0.581 0.000 34.14 67.10 47.26 47.86 -0.78 -0.56 101.25 126791 388 1 -55.10 -79.18 -55.00 -0.581 -0.814 0.000 16.56 8.43 18.06 -11.81 1.07 -1.50 25.45 126791 388 2 -55.10 -79.18 -55.00 -0.581 -0.814 0.000 1.28 0.65 11.42 -0.91 0.60 -0.85 11.53 126791 388 3 -55.10 -79.18 -55.00 -0.581 -0.814 0.000 -14.00 -7.12 4.78 9.99 0.14 -0.20 25.91 126816 388 1 -54.66 -81.79 -57.65 -0.814 0.581 0.000 -10.56 -20.76 5.11 -14.81 -5.40 -3.85 38.78 126816 388 2 -54.66 -81.79 -57.65 -0.814 0.581 0.000 0.29 0.56 14.56 0.40 -3.07 -2.19 15.65 126816 388 3 -54.66 -81.79 -57.65 -0.814 0.581 0.000 11.14 21.89 24.00 15.62 -0.74 -0.53 33.12 126818 388 1 -54.66 -81.79 -52.20 -0.814 0.581 0.000 -11.97 -23.53 1.50 -16.79 -3.95 -2.82 38.25 126818 388 2 -54.66 -81.79 -52.20 -0.814 0.581 0.000 0.38 0.76 12.86 0.54 -1.06 -0.76 13.00 126818 388 3 -54.66 -81.79 -52.20 -0.814 0.581 0.000 12.74 25.05 24.22 17.86 1.82 1.30 38.15 126817 388 1 -54.66 -81.79 -54.92 -0.814 0.581 0.000 -11.27 -22.16 3.68 -15.80 -4.75 -3.38 38.89 126817 388 2 -54.66 -81.79 -54.92 -0.814 0.581 0.000 0.34 0.66 14.05 0.47 -2.07 -1.48 14.52 126817 388 3 -54.66 -81.79 -54.92 -0.814 0.581 0.000 11.95 23.48 24.41 16.75 0.60 0.43 35.48 Max -49.20 -76.43 -52.20 Report No. 0800760.401.Rev 1 A-18 V StructuralIntegrityAssociates, Inc.

I Min1 -62.21 -87.34 -57.91 Range 13.01 10.92 5.72 Report No. 0800760.40 I.Rev 1 A-19 Ro NStructuralIntegrily Associates,Inc.

Table A-6. Access Hole Cover Plate FEM Stress Intensity Output - EPU FIV Load Case 146992 368 1 -11.00 -96.63 -37.25 0.129 0.992 0.000 -91.08 -0.66 -4.76 7.75 -1.68 15.09 94.39 146992 368 2 -11.00 -96.63 -37.25 0.129 0.992 0.000 -12.78 -0.16 15.75 1.42 -1.30 11.12 36.40 146992 368 3 -11.00 -96.63 -37.25 0.129 0.992 0.000 65.52 0.33 36.25 -4.91 -0.92 7.15 67.59 146992 378 1 -11.00 -96.63 -37.25 -0.994 0.113 0.000 -3.03 -233.86 -63.94 -26.62 -29.77 -3.39 241.94 146992 378 2 -11.00 -96.63 -37.25 -0.994 0.113 0.000 0.02 1.73 20.21 0.20 -8.25 -0.94 24.83 146992 378 3 -11.00 -96.63 -37.25 -0.994 0.113 0.000 3.08 237.32 104.37 27.02 13.27 1.51 241.69 146991 368 1 -11.00 -96.63 -33.78 0.129 0.992 0.000 -71.03 -0.49 -10.92 5.96 -2.62 23.83 80.00 146991 368 2 -11.00 -96.63 -33.78 0.129 0.992 0.000 -10.17 -0.13 16.45 1.13 -1.76 14.38 39.43 146991 368 3 -11.00 -96.63 -33.78 0.129 0.992 0.000 50.70 0.23 43.83 -3.71 -0.90 4.93 53.58 146991 378 1 -11.00 -96.63 -33.78 -0.994 0.113 0.000 -2.60 -201.00 -51.08 -22.88 -39.05 4.45 213.13 146991 378 2 -11.00 -96.63 -33.78 -0.994 0.113 0.000 0.03 2.36 20.38 0.27 -15.46 -1.76 35.94 146991 378 3 -11.00 -96.63 -33.78 -0.994 0.113 0.000 2.67 205.72 91.84 23.42 8.13 0.93 208.96 146990 368 1 -11.00 -96.63 -30.31 0.129 0.992 0.000 -38.98 -0.26 9.01 3.28 -3.83 32.61 81.51 146990 368 2 -11.00 -96.63 -30.31 0.129 0.992 0.000 1.14 0.01 15.74 -0.11 -2.38 19.38 41.68 146990 368 3 -11.00 -96.63 -30.31 0.129 0.992 0.000 41.26 0.28 22.46 -3.50 -0.93 6.14 43.42 146990 378 1 -11.00 -96.63 -30.31 -0.994 0.113 0.000 -2.01 -155.24 -34.36 -17.67 -44.65 -5.08 171.93 146990 378 2 -11.00 -96.63 -30.31 -0.994 0.113 0.000 0.03 2.34 18.10 0.27 -21.28 -2.42 45.63 146990 378 3 -11.00 -96.63 -30.31 -0.994 0.113 0.000 2.07 159.91 70.57 18.20 2.09 0.24 162.04 146985 368 1 -11.00 -96.63 -26.56 0.129 0.992 0.000 45.81 0.70 24.42 -5.65 -4.06 33.27 70.75 146985 368 2 -11.00 -96.63 -26.56 0.129 0.992 0.000 18.53 0.24 15.45 -2.11 -1.86 14.48 31.81 146985 368 3 -11.00 -96.63 -26.56 0.129 0.992 0.000 -8.75 -0.22 6.47 1.43 0.33 -4.31 17.71 Report No. 0800760.401.Rev I A-20 R StructuralIniugrityAssociates, In/.

146985 378 1 -11.00 -96.63 -26.56 -0.994 0.113 0.000 -1.02 -78.86 -16.81 -8.98 -48.45 -5.52' 116.15 146985 378 2 -11.00 -96.63 -26.56 -0.994 0.113 0.000 0.00 -0.01 12.38 0.00 -28.99 -3.30 59.66 146985 378 3 -11.00 -96.63 '-26.56 -0.994 0.113 0.000 1.02 78.84 41.56 8.98 -9.53 -1.08 82.13 146985 378 1 -11.00 -96.63 -26.56 -0.994 0.113 0.000 -1.02 -78.86 -16.81 -8.98 -48.45 -5.52 116.15 146985 378 2 -1i.00 -96.63 -26.56 -0.994 0.113 0.000 0.00 -0.01 12.38 0.00 -28.99 -3.30 59.66 146985 378 3 -11.00 -96.63 -26.56 -0.994 0.113 0.000 1.02 78.84 41.56 8.98 -9.53 -1.08 82.13 124858 368 1 -9.58 -96.78 -26.52 0.092 0.996 -0.001 36.94 0.35 -3.17 -3.59 -3.47 35.70 82.37 124858 368 2 -9.58 -96.78 -26.52 0.092 0.996 -0.001 25.83 0.25 14.81 -2.53 -0.16 1.67 26.32 124858 368 3 -9.58 -96.78 -26.52 0.092 0.996 -0.001 14.73 0.15 32.79 -1.47 3.15 -32.36 67.46 124859 368 1 -8.76 -96.85 -29.27 0.092 0.996 -0.001 13.24 0.11 -7.26 -1.19 -3.98 45.18 93.03 124859 368 2 -8.76 -96.85 -29.27 0.092 0.996 -0.001 7.89 0.06 14.27 -0.70 -0.79 8.83 20.52 124859 368 3 -8.76 -96.85 -29.27 0.092 0.996 -0.001 2.55 0.02 35.79 -0.21 2.41 -27.53 64.48 124815 368 1 -8.37 -96.89 -27.24 0.092 0.996 -0.001 28.52 0.22 17.01 -2.52 -4.61 53.74 108.50 124815 368 2 -8.37 -96.89 -27.24 0.092 0.996 -0.001 26.80 0.20 15.64 1-2.30 -0.44 5.01 28.91 124815 368 3 -8.37 -96.89 -27.24 0.092 0.996 -0.001 25.07 0.17 14.27 -2.08 3.73 -43.71 88.41 124919 368 1 -7.59 -96.95 -27.21 0.080 0.997 0.002 36.33 0.23 -3.93 -2.90 -3.19 42.06 93.58 124919 368 2 -7.59 -96.95 -27.21 0.080 0.997 0.002 24.79 0.15 13.23 -1.93 -0.51 6.41 27.78 124919 368 3 -7.59 -96.95 -27.21 0.080 0.997 0.002 13.25 0.07 30.39 -0.95 2.18 -29.24 61.08 124857 368 1 -6.98 -97.00 -28.10 0.080 0.997 0.002 53.32 0.30 31.67 -3.99 -2.61 37.38 81.69 124857 368 2 -6.98 -97.00 -28.10 0.080 0.997 0.002 15.28 0.08 15.04 -1.10 -0.47 6.34 21.56 124857 368 3 -6.98 -97.00 -28.10 0.080 0.997 0.002 -22.76 -0.14 -1.59 1.80 1.67 -24.70 53.91 124915 368 1 -6.38 -97.04 -26.33 0.072 0.997 0.000 -1.49 0.00 -21.62 0.08 -2.63 39.41 81.52 124915' 368 2 -6.38 -97.04 -26.33 0.072 0.997 0.000 44.17 0.20 8.10 -2.94 -0.10 1.53 44.43 124915 368 3 -6.38 -97.04 -26.33 0.072 0.997 0.000 89.83 0.40 37.83 -5.95 2.42 '-36.35 108.89 Report No. 0800760.401.Rev 1 A-21 !V StructuralintegrityAssociates, Inc.

124860 368 1 -5.93 -97.07 -33.27 0.035 0.999 0.007 102.02 0.44 70.45 -6.08 -1.33 14.74 108.11 124860 368 2 -5.93 -97.07 -33.27 0.035 0.999 0.007 -6.39 -0.03 1.82 0.44 -0.26 3.24 10.49 124860 368 3 -5.93 -97.07 -33.27 0.035 0.999 0.007 -114.80 -0.51 -66.81 6.97 0.80 -8.27 116.52 124861 368 1 -5.60 -97.09 -37.19 0.031 1.000 -0.001 135.27 0.48 56.66 -7.19 -0.72 12.42 137.46 124861 368 2 -5.60 -97.09 -37.19 0.031 1.000 -0.001 -10.67 -0.04 -3.84 0.62 40.32 4.93 i3.28 124861 368 3 -5.60 -97.09 -37.19 0.031 1.000 -0.001 -156.62 -0.57 -64.34 8.44 0.08 -2.57 157.02 124913 368 1 -5.27 -97.11 -26.64 0.042 0.999 0.002 11.59 0.03 -6.49 -0.59 -0.87 16.28 37.29 124913 368 2 -5.27 -97.11 -26.64 0.042 0.999 0.002 40.64 0.12 6.55 -2.20 -0.20 3.42 41.10 124913 368 3 -5.27 -97.11 -26.64 0.042 0.999 0.002 69.69 0.21 19.59 -3.81 0.48 -9.43 71.61 124832 368 1 -5.16 -97.11 -29.28 0.035 0.999 0.007 81.60 0.25 62.36 -4.32 -1.06 17.55 92.17 124832 368 2 -5.16 -97.11 -29.28 0.035 0.999 0.007 6.92 0.03 6.35 -0.41 -0.07 0.87 7.57 124832 368 3 -5.16 -97.11 -29.28 0.035 0.999 0.007 -67.75 -0.20 -49.66 3.51 0.92 -15.80 77.06 124911 368 1 -3.99 -97.17 -26.51 0.025 1.000 0.000 47.78 0.08 -13.94 -1.88 0.25 -7.10 63.41 124911 368 2 -3.99 -97.17 -26.51 0.025 1.000 0.000 39.10 0.06 4.58 -1.53 -0.22 5.28 39.95 124911 368 3 -3.99 -97.17 -26.51 0.025 1.000 0.000 30.42 0.05 23.10 -1.19 -0.68 17.66 44.83 124856 368 1 -2.54 -97.22 -29.27 0.035 0.999 0.007 101.84 0.08 67.59 -2.32 0.43 -18.72 110.11 124856 368 2 -2.54 -97.22 -29.27 0.035 0.999 0.007 6.42 0.01 1.73 -0.17 0.02 -0.87 6.58 124856 368 3 -2.54 -97.22 -29.27 0.035 0.999 0.007 -89.01 -0.07 -64.12 1.99 -0.39 16.99 97.64 124855 368 1 -0.90 -97.25 -28.19 0.002 1.000 0.000 106.58 0.02 56.19 -0.76 0.43 -41.21 129.68 124855 368 2 -0.90 -97.25 -28.19 0.002 1.000 0.000 13.18 0.00 6.30 -0.12 0.04 -4.20 15.17 124855 368 3 -0.90 -97.25 -28.19 0.002 1.000 0.000 -80.23 -0.02 -43.60 0.52 -0.35 32.81 99.48 Max -0.90 -96.63 -26.33 1 Min -11.00 -97.25 -37.25 1 Report No. 0800760.401.Rev 1 A-22 R1StructuralIntegrityAssociates, Inc.

I I Range 1 0.10 o0.62 1'0.92 1 1 1 1 1 1 1 1 1 1 Report No. 0800760.401.Rev 1 A-23 R StructucralIntegrilyAssociates, Inc.

ATTACHMENT 1:

MONTICELLO NUCLEAR GENERATING STATION, RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM, INF# MNGP-2005-01 Report No. 0800760.401 .Rev I ATT1-1

  • StrncturalInlegrilyAssociates, Ina

A NMC Committed to N~ckw F~rerf!"~ci AREVA MONTICELLO NUCLEAR GENERATINGSTATION, RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM INF# MNGP-2005-01 Date: 3109/05 Time:: 0530-Disk Number: 2 Title Number: 3 Component: -Steam Dryer Weld V3 90 Description of Relevant Indication:

A crack was located at the top of Weld V3 90. This crack extends for approximately 1.375" on the outside of the End Panel weld across the top and down the inside of the weld to Dryer Bank "B" for approximately I".

Outside View

NMC A Cw, 'unft~tu l Eseor ,

AR EVA Top View

A NMC Comm-irfd to Nockmx Etceftento AR EVA Inside Measurement FANP VIr Level III: ______

NIN(GP Review: ______

Il4ut11-1 ( upN to F~A N I fill Rkotu rd')

ATTACHMENT 2:

MONTICELLO NUCLEAR GENERATING STATION, RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM, INF# MNGP-2005-02 Report No. 0800760.401.Rev I ATT2-1 R N StrucitralIntegrityAssociates, Inc

A NMC ARE VA MONTICELLO NUCLEAR GENERATINGSTATION. RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM INF 1 MNCP-205-62 Date: 3/09105 Time:: 0800 Disk Number: 4 Title Number: 8 Component: Dryer Description of Relevant Indication:

A crack was located at the top of Weld VIO 90 of the Steam Dryer. The crack is from the Weld center moving to the right toe and wraps over the top. Approximately 1 3/8 inches in length. See attached pictures.

P*ige I of I

A Cc~ijoM NiCref AREVA Top View PNge 2 of 3

A NMC AREVA Measurement FANP VTr Level III:

MN(;P Review: _____

(Rclurii Coupy (tu [ NI' for ltvcori Page 3 of 3

ATTACHMENT 3:

MONTICELLO NUCLEAR GENERATING STATION, RFO-23 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM, INR-023-01 Report No. 0800760.40 1.Rev 1 ATT3-1 StructuralIntegrity Assoclates, Inc.

A NMC AREVA MONTICELLO NUCLEAR GENERATINGSTATION, RFO-23 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM INR-R23-M1 Date: 3120r07 Time:: 06:00 Disk Number: 01 Title Number. 03 Component: STEAM DRYER

==

Description:==

End Panel weld VI0 90 Description of Relevant Indication:

While searching for the existing indication on VI 0 9(1, an additional indication approximately 0.25 in. long was seen on the opposite (01)) side of the plate. It should be noted that a review of 2005 inspection data revealed no evidence of this area being examined.

AREVA VT Level III:

MN(;P Review:

(Return ('tp* to ARi VA fo r Records)

Page I of I

ATTACHMENT 4:

MONTICELLO NUCLEAR GENERATING STATION, RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM, INF# MNGP-2005-05 Report No. 0800760.401.Rev I ATT4-1 StiucturalIntegrityAssoclates, Inc.

A FRAMATOMI*

NMC ANP MONTICELLO NUCLEAR GENERATINGSTATION. RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM INF 4 MNG1-2005-05 Date: 3/9/05 Time: 2131 Disk Number. 7 Title Number: 5 Component: _Steam D)ryer Weld VIO 270 Description of Relevant Indication:

A crack was located at the top of Weld VIO 270 of the Steam Dryer. The crack is located over the over the top at the junction of the End Panel and Dry*r Bank. The indication is less than I inch in length.

See attached pictures.

FANIP VT Level III:

MNGIP Review:

( l1ctuumi (Copy to FA.' fIor R~4ei I(I%)

ATTACHMENT 5:

MONTICELLO NUCLEAR GENERATING STATION, RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM, INF# MNGP-2005-03 Report No. 0800760.401.Rev 1 ATT5-1 StructuralIntegrityAssociates, Inc.

A NMC~

Conlrlscr to NO~tr,. Exc~cvu AREVA MONTICELLO NUCLEAR G(EN ERATINGSTATION, RFO-22 IN-VESSEL VISUAL INSPECTION RELEVANT INDICATION NOTIFICATION FORM INF 1 MNG P-2005-03 Date: 3/09/05 Time: 1200 Disk Num be. 4 Title Number: 8 Component: Dryer Description of Relevant Indication:

A crack was located about 4 feet from the bottom of 215 degree I)ryer support Bracket Guide Channel.

The crack comes horizontally across from a possible are strike around the corner of the channel and Into the left toe of vertical weld on the face of the dryer. This is on the right side of the Channel Guide and the Length is approximately % inch. See Attached Pictures.

Page I of 3

A ( Nmc AREVA Measurement from Left side Page 2 or 3

A AREVA Measurement from the Right side FANI' VT Level III:

NIN(;'P Review:_______

(Ret urn C'opy (o FA NVI for Uccords)

Paeg 3 of 3

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