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Enclosure 4: Attachment 2 - WCAP-18353-NP, Rev. 0, Reactor Internals Fluence Evaluation for a Westinghouse 3-Loop Plant with Two Units - Subsequent License Renewal
	ML20246G709
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Site:	North Anna
Issue date:	10/31/2018
From:	; Virginia Electric & Power Co (VEPCO), Westinghouse
To:	; Office of Nuclear Reactor Regulation
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Enclosure 4 WCAP-18353-NP, REVISION 0 Virginia Electric and Power Company (Dominion Energy Virginia)

North Anna Power Station Units 1 and 2 Serial No.: 20-115 Docket Nos.: 50-338/339

WCAP-18353-NP Revision 0 Westinghouse Non-Proprietary Class 3 Reactor Internals Fluence Evaluation for a Westinghouse 3-Loop Plant vvith Two Units -

Subsequent License Renewal

@westinghouse October 2018

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Westinghouse Non-Proprietary Class 3 WCAP-18353-NP Revision 0 Reactor Internals Fluence Evaluation for a Westinghouse 3-Loop Plant with Two Units - Subsequent License Renewal Riley I. Benson*

Advanced Mechanical Design October 2018 Reviewer:

Benjamin W. Amiri*

Radiation Engineering & Analysis Taylor N. Terek*

Aging Management & License Renewal Approved:

Laurent P. Houssay*, Manager Radiation Engineering & Analysis

Electronically approved records are authenticated in the electronic document management system.

WCAP-18353-NP.docx Westinghouse Electric Company LLC 1000 Westinghouse Drive Cranberry Township, PA 16066, USA

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Westinghouse Non-Proprietary Class 3 RECORD OF REVISIONS Revision Description 0-A Original Draft Issue 0

Original Issue WCAP-18353-NP ii Completed March 2018 October 2018 October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 iii TABLE OF CONTENTS LIST OF TABLES....................................................................................................................................... iv LIST OF FIGURES...................................................................................................................................... V EXECUTIVE

SUMMARY

.......................................................................................................................... vi 1

INTRODUCTION........................................................................................................................ 1-1 2

NEUTRON TRANSPORT CALCULATIONS............................................................................ 2-1 2.1 METHOD OF ANALYSIS.............................................................................................. 2-1 2.2 REACTOR INTERNALS UPPER CORE PLATE, AND UPPER SUPPORT PLATE FLUENCE EXPOSURE.................................................................................................. 2-6 2.3 REACTOR INTERNALS FAST NEUTRON FLUENCE MAP AT 60 YEARS OPERATION (UNIT 1 AT 51.6 EFPY, UNIT 2 AT 52.8 EFPY)..................................... 2-7 2.4 REACTOR INTERNALS FAST NEUTRON FLUENCE MAP AT 80 YEARS OPERATION (72 EFPY)............................................................................................... 2-16 2.5 FIGURE OF MERIT AND POWER DENSITY........................................................... 2-25 2.6 REACTOR INTERNALS COMPONENTS MATERIAL RELIABILITY PROGRAM (MRP) FLUENCE SCREENING.................................................................................. 2-26 3

REFERENCES............................................................................................................................. 3-1 WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 iv LIST OF TABLES Table 2.2-1 Maximum Fast Neutron (> 1.0 Me V) Fluence at the Selected Westinghouse 3-Loop Plant Unit 1 UCP Bottom, Top Surfaces and USP [n/cm 2

]............................................................... 2-6 Table 2.2-2 Maximum Fast Neutron(> 1.0 MeV) Fluence at the Selected Westinghouse 3-Loop Plant Unit 2 UCP Bottom, Top Surfaces and USP [n/cm2]............................................................... 2-6 Table 2.5-1 Unit 1 Power Density and Figures of Merit [W/cm2]........................................................... 2-25 Table 2.5-2 Unit 2 Power Density and Figures of Merit [W/cm2]........................................................... 2-25 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY................................................................................. 2-28 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY.................................................................................... 2-41 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY................................................................................. 2-54 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY.................................................................................... 2-67 WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 V

LIST OF FIGURES Figure 2.1-1 Plan View of the Selected Westinghouse 3-Loop Plant Reactor Geometry at the Core Midplane with Surveillance Capsules.............................................................................. 2-4 Figure 2.1-2 The selected Westinghouse 3-Loop Plant r,z Reactor Geometry.......................................... 2-5 Figure 2.3-1 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)......................................................... 2-8 Figure 2.3-2 Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)......................................................... 2-9 Figure 2.3-3 Top Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)................................ 2-10 Figure 2.3-4 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 0 =:= 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)................................ 2-11 Figure 2.3-5 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL (52.8 EFPY)....................................................... 2-12 Figure 2.3-6 Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL_ (5~.8 E~PY).. ******:**********************-****-***,:****:*,:*********2-13 Figure 2.3-7 Top Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL (52.8 EFPY)................................ 2-14 Figure 2.3-8 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL (52.8 EFPY)................................ 2-15 Figure 2.4-1 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY).......................................................... 2-17 Figure 2.4-2 Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY).......................................................... 2-18 Figure 2.4-3 Top Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY)................................... 2-19 Figure 2.4-4 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY)................................... 2-20 Figure 2.4-5 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY).......................................................... 2-21 Figure 2.4-6 Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY).......................................................... 2-22 Figure 2.4-7 Top Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY)................................... 2-23 Figure 2.4-8 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY)................................... 2-24 WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 vi EXECUTIVE

SUMMARY

This report describes a neutron fluence assessment on reactor internals performed for a Westinghouse 3-loop plant with two units in support of subsequent licensing renewal based on the guidance specified in Regulatory Guide 1.190, "Calculational and Dosimetry Methods for Determining Pressure Vessel Neutron Fluence" (Reference 1). In this assessment, the reactor models for a similar standard Westinghouse 312 reactor in Reference 16 have been modified to be applicable to the plant used in this analysis. These models had a more detailed geometry including the upper internals geometry needed for this analysis.

Using the updated models, radiation transport calculations have been performed on a fuel-cycle-specific basis, using fuel cycle information specific for the two units located at the selected Westinghouse 3-loop plant site to calculate reactor internals fast neutron fluences. This evaluation has determined which fast neutron fluence range (E > 1.0 MeV) applies to each reactor internals component and support binning of the selected Westinghouse 3-loop plant units' reactor internals components for MRP-191 (Reference 6) screening purposes. Screening criteria for fast neutron fluence are taken from the updated MRP-191, which are consistent with MRP-175 (Reference 10):

Where:

1.3 x 1020 n/cm2 (per MRP-175, screening threshold for stress relaxation in bolts) 6.7 x 1020 n/cm2 (per MRP-175, screening threshold for IE in CASS) 1.0 x 1021 n/cm2 (per MRP-175, screening threshold for IE in austenitic stainless steel)

-2~0 x 1021 n/cm2 (per MRP~l 75, minirnum:-dose for IASCC (requires 89 ksi stress))

1.3 x 1022 n/cm2 (per MRP-175, screening threshold for void swelling)

IE - Irradiation Embrittlement CASS - Cast Austenitic Stainless Steel IASCC - Irradiation Assisted Stress Corrosion Cracking The most appropriate grouping of reactor internals components based on location relative to the fast neutron fluence (E > 1.0 MeV) region boundaries for the selected Westinghouse 3-loop plant units has been determined for 51.6 effective full-power years (EFPY) for Unit 1, 52.8 EFPY for Unit 2, and 72 EFPY of operations for both units, respectively, and presented in this report.

The power densities and figures of merit for the selected Westinghouse 3-loop plant Units 1 and 2 are presented in Section 2.5.

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Westinghouse Non-Proprietary Class 3 1-1 1

INTRODUCTION Demonstration that the effects of aging degradation in pressured water reactor (PWR) internals are adequately managed is essential for maintaining a healthy fleet and assuring continued functionality of the reactor internals. A series of Materials Reliability Programs (MRP) have been developed to implement this goal. First, a set of screening criteria threshold values with sound technical bases are developed for age-related degradation evaluation of PWR internals component items (Reference 10) after the framework for managing aging components is done (Reference 3). Then, initial screening and categorization have been performed on Westinghouse and Combustion Engineering (CE) designed PWRs (Reference 6) based on those screening criteria in Reference 10, followed by further screening and categorization based on failure likelihood (susceptibility) and damage likelihood ( consequence severity) through failure modes, effects, and criticality analysis (FMECA), then by functionality analysis (Reference 11). References 8, 9, and 12 establish aging management strategies and inspection and evaluation guidelines for Westinghouse and CE designed reactor internals components in different categories.

Among the eight postulated aging mechanisms related to reactor internals, four are related to radiation exposure: irradiation enhanced stress relaxation (SR), irradiation embrittlement (IE), irradiation-assisted stress corrosion cracking.(IASCC), and void swelling (VS). For these aging mechanisms, fast neutron exposure (e.g., fast neutron fluence (E > 1.0 MeV)) is an important parameter for screening and categorization for the reactor internals.

This report describes a reactor vessel internals fluence assessment for a selected Westinghouse 3-loop plant with two units. The neutron exposure experienced by the reactor internals-was determined-on a fuel-cycle-specific basis for the first 24 operating cycles (approximately 29.7 EFPY) for Unit 1 and first 23 operating cycles (approximately 28.1 EFPY) for Unit 2, respectively. Following completion of these plant-specific exposure assessments encompassing the fuel cycles completed to date, projections of the future neutron exposure extending to 51.6 EFPY and 72 EFPY (for Unit 1) and 52.8 EFPY and 72 EFPY (for Unit 2) of operations were performed, corresponding to 60 years of end-of-life (EOL) operation and 80 years subsequent licensing renewal EOL operation, respectively. In performing the fluence projections, the assumption was made that the spatial power distribution, power level, and reactor operating characteristics. of Cycle 24 for Unit 1 and Cycle 23 for Unit 2 would be representative through the 60 year and 80 year EOL operating period.

In this assessment, neutron exposures expressed in terms of fast neutron (E > 1.0 Me V) fluence were established for the reactor internals of Unit 1 at 51.6 EFPY and 72 EFPY and for the reactor internals of Unit 2 at 52.8 EFPY and 72 EFPY, respectively. The fast neutron fluence levels for reactor internals components were then compared against various irradiation screening criteria threshold values for different aging mechanisms for appropriate binning or categorization.

Regulatory Guide 1.190, "Calculational and Dosimetry Methods for Determining Pressure Vessel Neutron Fluence" (Reference 1), describes state-of-the-art calculation and measurement procedures that are acceptable to the United States Nuclear Regulatory Commission (USNRC) staff for determining pressure vessel fluence. Because there is no regulatory guide published by USNRC on how to perform neutron fluence calculation on reactor internals, Regulatory Guide 1.190 was used as a reference guide to perform the fast neutron fluence evaluation on reactor internals.

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Westinghouse Non-Proprietary Class 3 1-2 In subsequent sections of this report, the methodologies used to perform neutron transport calculations are described in detail. The results of the plant-specific transport calculations are given for the selected Westinghouse 3-loop plant units' reactor internals. The fast neutron fluence results on reactor internals were plotted as fast neutron fluence contour maps corresponding to the MRP screening criteria threshold values. The locations of the reactor internals components were then identified relative to the fast neutron fluence maps and binned into nine different screening groups.

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Westinghouse Non-Proprietary Class 3 2-1 2

NEUTRON TRANSPORT CALCULATIONS As noted in Section 1 of this report, the exposure of the selected Westinghouse 3-loop Plant Units 1 and 2 reactor internals was developed based on a series of fuel-cycle-specific neutron transport calculations. In this section, the neutron transport methodology is discussed in detail.

2.1 METHOD OF ANALYSIS Discrete ordinates transport calculations were performed on a fuel-cycle-specific basis to determine the neutron and gamma ray environment within the reactor geometry of the selected Westinghouse 3-loop plant Units 1 and 2. The specific methods applied are consistent with those described in References 1 and 7 for reactor vessel fluence evaluation, which is the best available regulatory guidance on fluence calculation on reactor vessel environment to date. In the application of this methodology to the fast neutron exposure evaluations for the selected Westinghouse 3-loop plant Units 1 and 2, plant-specific forward transport calculations were carried out using the following two-dimensional/one-dimensional fluence rate synthesis technique for the reactor vessel:

¢(r,0,z) = ¢(r,0) x ¢(r,z)

¢(r) where ¢(r,-e,zr-is the synthesized lhree-dimensional neufron :fluence rate distribution, ¢(r,0) is the transport solution in r,0 geometry, ¢(r,z) is the two-dimensional solution for a cylindrical reactor model using the actual axial core power distribution, and ¢(r) is the one-dimensional solution for a cylindrical reactor model using the same source per unit height as that used in the r,0 two-dimensional calculation.

For the reactor internals, a slightly different fluence rate synthesis technique has been used:

¢(r,0,z)=Max[¢(r,0)x ¢~~~;),¢(r,0)x ¢(~(~Flat]

Where¢(r,0,z), ¢(r,0), ¢(r,z), and ¢(r) are the same as defined in the paragraph above. </J(r, z)Fla, is the two-dimensional solution for the same cylindrical reactor model as used in the ¢(r,z) calculation, but using a flat axial core power distribution with the downcomer reactor coolant density for the bottom half of the core and the outlet plenum 'reactor coolant density for the top half of the core, respectively. This special treatment is for better solutions for the reactor internals components above and below the 'active core. It is well known that the axial power distribution from the core design calculations have large uncertainties in the regions close to the top and bottom of the core. It is also well known that the top and bottom reactor internals components are only sensitive to the top and bottom six inches to one foot of the core and source conditions, due to their proximity to the core. Therefore, using the downcomer reactor coolant density for the bottom half core and outlet reactor coolant density for the top half of the core provides best-estimate top and bottom core conditions for the transport calculations on the reactor internals components above and below the active core. Further, the axial power distribution from the core design calculations tends to drop off at the locations close to the top and bottom of the active core, whereas the flat axial power distribution assumes a uniform power distribution through the axial length of WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-2 the active core. The flat axial power distribution ensures that conservatism has been included where the simulated source conditions with large uncertainties are encountered, especially above and below the active core. For the radial reactor internals components, however, the actual axial power distribution has been used, because it provides best estimate fast neutron fluence for the radial reactor internals near core midplane. Once the two sets of 2D/1D SYNTHESIS transport solutions are calculated, the solution with the higher fluence rate from the two synthesis techniques is used to generate the final three-dimensional solution for the reactor internals components.

In performing the fast neutron exposure evaluations for the selected Westinghouse 3-loop reactors, plant-specific forward transport calculations were carried out to directly solve for the space-and energy-dependent scalar flux, ~(r,0,z,E), consistent with requirements of Regulatory Guide 1.190 (Reference 1).

For this analysis, all of the transport calculations were carried out using a two-dimensional discrete ordinates code, DORT (Reference 4), and the BUGLE-96 cross-section library (Reference 5). The BUGLE-96 library provides a coupled 47-neutron and 20-gamma-ray group cross-section data set produced specifically for light water reactor (LWR) applications. In these analyses, anisotropic scattering was treated with a P5 Legendre expansion and the angular discretization was modeled with an S16 order of angular quadrature. Energy-and space-dependent core power distributions were treated on a fuel-cycle-specific basis.

ThJ IJla!]. vie~ of t_lle r,0 _pO_RT geometric modeLof the selected Westinghouse 3-loop units' reactor geometry at the core midplane is shown in Figure 2.1-1. In Figure 2.1-1, a single octant is depicted showing the arrangement of thermal shield and.surveillance capsule attachments. In addition to the core, upper and lower reactor internals, reactor pressure vessel, and primary biological shield, the models developed for these octant geometries also included explicit representations of the stainless steel former plates, surveillance capsules, the reactor pressure vessel cladding, the reactor pressure vessel reflective insulation, shield tank, and the reactor cavity liner plate.

From a neutrons standpoint, the inclusion of the surveillance capsules and associated support structure in the analytical model is significant for reactor vessel fluence calculation. Since the presence of the capsules and structure has a marked impact on the magnitude of the neutron fluence rate as well as on the relative neutron and gamma ray spectra at dosimetry locations within the capsules, a meaningful evaluation of the radiation environment internal to the capsules can be made only when these perturbation effects are properly accounted for in the analysis. However, for the fast neutron fluence calculations on the reactor internals, it is negligible, because most of the radial reactor internals components,i if not all, are inside the thermal shield. The reactor internals fluence values reported in this work are takert from the r,0 model with surveillance capsules.

A section view of the r,z model of the selected Westinghouse 3-loop reactors is shown in Figure 2.1-2.

The model extended radially from the centerline of the reactor core out to a location interior to the primary biological shield (a radius of 411.480 cm) and over an axial span of -338.525 cm to +343.460 cm with respect to the midplane of the active core. The reactor vessel nozzles are not modeled.

In developing the DORT r,0 and r,z geometry analytical models of the reactor shown in Figure 2.1-1 rand Figure 2.1-2, nominal design dimensions were employed for the various structural components. Cycle-dependent water temperatures and, hence, coolant density in the reactor core and downcomer regions of WCAP-18353-NP October 2018 Revision 0

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__j

Westinghouse Non-Proprietary Class 3 2-3 the reactor were taken to be representative of full-power operating conditions. The reactor core was treated as a homogeneous mixture of fuel, cladding, water, and miscellaneous core structures such as fuel assembly grids, guide tubes, etc.

The DORT r,0 geometric reactor model shown in Figure 2.1-1 consisted of 17 6 radial by 168 azimuthal intervals. The DORT r,z geometric model shown in Figure 2.1-2 consisted of 193 radial by 176 vertical intervals. For both DORT r,0 and r,z models, mesh sizes were chosen to ensure sufficient resolution of the stair-step-shaped baffle plates and an adequate number of mesh throughout radial and axial regions of interest. The pointwise inner iteration convergence criterion utilized in the calculations was set at a value of0.001.

The core power distributions used in the plant-specific transport analysis for the selected Westinghouse 3-loop plant units were taken from appropriate design documentation. The data extracted included fuel assembly-specific initial enrichments, beginning-of-cycle burnups, and end-of-cycle bumups. Appropriate axial distributions were also obtained.

For each fuel cycle of operation, the fuel assembly-specific enrichment and burnup data were used to generate the spatially-dependent neutron source throughout the reactor core. This source description included the spatial variation of isotope-dependent (U-235, U-238, Pu-239, Pu-240, Pu-241, and Pu-242) fission spectra, neutron emission rate per fission, and energy release per fission based on the burnup history. ofindividual-fuel assemblies.~These fuel-assembly-specifie neutron-source-strengths derived from-the detailed isotopics were then converted from fuel pin Cartesian coordinates to the spatial mesh arrays used in the DORT 2D/1D SYNTHESIS discrete ordinates calculations.

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q-,~

o-t o-t o-

~-

N_

o-8 N.

50.0 Westinghouse Non-Proprietary Class 3 100.0

\\50.0 200.0 Ccml 250.0 2-4 JOO.O J50.0 Figure 2.1-1 Plan View of the Selected Westinghouse 3-Loop Plant Reactor Geometry at the Core Midplane with Surveillance Capsules WCAP-1 8353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-5 so.o 100.0 150.0 200.0 250.o 300.0 3so.o 400.0 R

[cm]

Figure 2.1-2 The selected Westinghouse 3-Loop Plant r,z Reactor Geometry WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-6 2.2 REACTOR INTERNALS UPPER CORE PLATE, AND UPPER SUPPORT PLATE FLUENCE EXPOSURE The maximum fast neutron (> 1.0 MeV) fluence at the bottom and top surfaces of the reactor internals upper core plate (UCP) and upper support plate (USP) are also reported in this section in Table 2.2-1 and Table 2.2-2.

Table 2.2-1 Maximum Fast Neutron(> 1.0 MeV) Fluence at the Selected Westinghouse 3-Loop Plant Unit 1 UCP Bottom, Top Surfaces and USP [n/cm2]

Irradiation Time (EFPY)

UCPBottom UCPTop USP 51.6 l.59E+21 9.10E+20

< 1E+20 72 2.24E+21 l.28E+21

< 1E+20 Table 2.2-2 Maximum Fast N.eutron (> 1.0 MeV) Fluence at the Selected Westinghouse 3-Loop Plant Unit 2 UCP Bottom, Top Surfaces and USP [n/cm2]

Irradiation Time (EFPY)

UCPBottom 52.8 l.64E+21 72 2.24E+21 WCAP-18353-NP UCPTop 9.37E+20 l.28E+21 USP

< 1E+20

< 1E+20 October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-7 2.3 REACTOR INTERNALS FAST NEUTRON FLUENCE MAP AT 60 YEARS OPERATION (UNIT 1 AT 51.6 EFPY, UNIT 2 AT 52.8 EFPY)

The r,0 plan view and r,z cross section view fast neutron fluence contour maps for the selected Westinghouse 3-loop plant Units 1 and 2 at 60 years (51.6 EFPY and 52.8 EFPY, respectively) end oflife (EOL) are presented in Figure 2.3-1 through Figure 2.3-8. The r,0 plan view plots are generated using the fast neutron fluence contour maps at the core midplane and the r,z cross section view plots are generated at 0 = 0°. Please note that the reactor vessel internals geometry overlay on the neutron fluence contours in those figures are just for visualization purposes, and should not be used for any quantitative determination of the fluence level.

There are local peaks on the tluence contours on the cross section views (for example, Figure 2.3-2) at the top of the upper core plate and bottom of the lower core plate at radius around R = 170 cm. This is because the upper and lower core plates have two regions, A and B, as labeled in Figure 2.1-2. Region A is a mixture of reactor coolant water and stainless steel due to coolant flow penetration channels in this region. Region B has no flow penetrations, and is 100 percent stainless steel. The stainless steel is less effective at shielding the fast neutrons because it stops neutrons mostly by inelastic scattering. A similar effect, to a lesser extent, is observed at each former plate location where the fluence contour extends slightly in the radial direction.

It has been observed that the reactor internals fluence is reduced by a factor of about 31.5 in the radial direction over 20 cm at the core mid plane due to the presence of the core baffle plate and core barrel. Fluence is reduced by a factor of about 12.5 at the locations above the core due to the presence of the upper core plate, and locations below the core due to the presence of the lower core plate.

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Westinghouse Non-Proprietary Class 3 2-8

.... n 150 lOO 50 lOO JOO Figure 2.3-1 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)

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>5.0E+22 1.3E+22. Mt:+22)

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.... n t,q 200 l00 0

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-200 Westinghouse Non-Proprietary Class 3 50 l00 150 200 250

% fc*J 2-9 300 350 Figure 2.3-2 Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)

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5.0E+22 1.3E+ 22. MlE+22)

(1.0E+22, 1.31:+22)

(1.0E+21. 2.CE+21)

(l.3E+2J. 6.7E+21ll 1.0E+20. 1.31:+:IQ 1.0E+20 ft._

0 50 Westinghouse Non-Proprietary Class 3 100 150

% (ca}

2-10 200 250 Figure 2.3-3 Top Half Core Cross Section View Fast Neutron Fluence Map at 8 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)

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0

-50

-100 ft...

-150

-200

-250 50 Westinghouse Non-Proprietary Class 3 100 150 (cJ 2-11 200 250 Figure 2.3-4 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 9 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 60 Years EOL (51.6 EFPY)

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300 250 200

... ! HO

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JOO 50 50 Westinghouse Non-Proprietary Class 3 JOO JSO 200 z (ca]

2-12 250 300 350 Figure 2.3-5 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL (52.8 EFPY)

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

5.0E+22 1.3E+22. 5.0E+22) 1.0E+22. 1.3E+22)

,-(2.0E+ 21. 1 DE+ 22) 1.0E+2I. 2DE+21) 6.7E+a>, 1.0E+21) 1.3E+a>, 0.7E+D 1.0E+a>. 1.3E+2J) 1.0E+a>

200 100 n

0 llq

-100

-200 Westinghouse Non-Proprietary Class 3 2-13 100 200 300

% fc*J Figure 2.3-6 Cross Section View Fast Neutron Fluence Map at 8 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL (52.8 EFPY)

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 400

~.OE+22 1.3E+22 5.0E+22) 1.0E+21. 2.0E+21)

C6.7E+D. 1.ll:+21) 1.3E+D 6.7E+2J)

(1.0E+D. 1.3E+:lQ 1.0E+D

... e Westinghouse Non-Proprietary Class 3 so 100 150

.z fc:*J 2-14 200 Figure 2.3-7 Top Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL (52.8 EFPY)

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 250

l.3E+22. ~22) 1.oE+22. 1.3E+22) 21, 1.oE+ZZ) 0 1.oE+21. 2.(£+21)

-50

.7E+a'.l 1££+21) 1.3E+a'.l. 6.7E+a'.lJ 1.oE+a'.l. 1.3E+!lll)

I.OE+a'.l

-JOO ft....

-J50

-200

-250 0

Westinghouse Non-Proprietary Class 3 50 JOO J50

% [cJ 2-15 200 Figure 2.3-8 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 8 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 60 Years EOL (52.8 EFPY)

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 250

Westinghouse Non-Proprietary Class 3 2-16 2.4 REACTOR INTERNALS FAST NEUTRON FLUENCE MAP AT 80 YEARS OPERATION (72 EFPY)

The r,0 plan view and r,z cross section view fast neutron fluence contour maps for the selected Westinghouse 3-loop plant Units 1 and 2 at 80 years (72 EFPY) end of life (EOL) are presented in Figure 2.4-1 through Figure 2.4-8. The r,0 plan view plots are generated using the fast neutron fluence contour maps at the core midplane and the r,z cross section view plots are generated at 0 = 0°. Please note that the reactor vessel internals geometry overlay on the neutron fluence contours in those figures are just for visualization purposes, and should not be used for any quantitative determination of the fluence level.

There are local peaks on the fluence contours on the cross section views (for example, Figure 2.3-2) at the top of the upper core plate and bottom of the lower core plate at radius round R = 170 cm. This is because the upper and lower core plates have two regions, A and B, as labeled in Figure 2.1-2. Region A is a mixture of reactor coolant water and stainless steel due to coolant flow penetration channels in this region. Region B has no flow penetrations, and is 100 percent stainless steel. The stainless steel is less effective at shielding the fast neutrons because it stops neutrons mostly by inelastic scattering. A similar effect, to a lesser extent, is observed at each former plate location where the fluence contour extends slightly in the radial direction.

It has been observed that the reactor internals fluence is reduced by a factor of about 31.5 in the radial direction over 20 cm at the core midplane due to the presence of the core baffle plate and core barrel. Fluence is reduced by a factor of about 12.5 at the locations above the core due to the presence of the upper core plate, and locations below the core due to the presence of the lower core plate.

WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-17

l50 aoo

.... ! l50 100 50 0

0 100 200 300

.r {ca]

Figure 2.4-1 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY)

WCAP-1 8353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 400

5.0E+22 (1.3E+22. 5.Cl:+22')

Cl.OE+22. 1.3E+22')

200 (1.0E+21, 2.Cl:+21)

(6.7E+20. 1.Cl:-+21)

(1.3E+20. 6.7E-t~

(l.OE+20. 1.3E-t~

I.OE+20 100

.... n 0

-100

-200 Westinghouse Non-Proprietary Class 3 50 100 150 200 i

[ca]

2-18 2 50 300 3 50 Figure 2.4-2 Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY)

WCAP-18353-NP October 2018 Revision 0

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1.3E+22. 5.0E+22) 1.0E+21. 2.0&21)

.7E+21l. 1.0E+21) 1.3E+21l. 6.7E+DJ l.0E+21l. 1.3&:D I.Of+21l

... n Iii 250 200 150 100 50 0

0 Westinghouse Non-Proprietary Class 3 2-19 50 100 150 200 250 1C [ca]

Figure 2.4-3 Top Half Core Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY)

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 300

Westinghouse Non-Proprietary Class 3 2-20 0

-50

-JOO ft...

-150

-200

-250 0

so 100 150 200 250

% [ca]

Figure 2.4-4 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 8 = 0° for the Selected Westinghouse 3-Loop Plant Unit 1 at 80 Years SLR (72 EFPY)

WCAP-1 83 S 3-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 300

Westinghouse Non-Proprietary Class 3 2-21 350 1.3E+22. ~OE+:22>

I.OE+ 22. 1.3E+22) 300 1.0E+21. 2.0E+21)

.7E+:10, 1.0E+21) 1.3E+:i!O 6.7E+DJ 1.0E+:10. 1.lf+n 1.0E+:10 250 200

.... n 150 100 50 0

0 so 100 150 200 250 300

% /ca]

Figure 2.4-5 Plan View Fast Neutron Fluence Map at Core Midplane for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY)

WCAP-1 8353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 350

5.0E-t-22 (1.3E-t22 ~.oe+22)

(1.~-t-22. 1.3E+22) 200 (1 -~-+-21. 2.cE+21)

(1.3E-tID. 0.7E-tal)

(1.0E-+-ID. 1.3E+al) 1.0E-tID 100 0

-100

-200 0

Westinghouse Non-Proprietary Class 3 50 100 150 200 z [ca}

2-22 250 300 Figure 2.4-6 Cross Section View Fast Neutron Fluence Map at 0 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY)

WCAP-1 8353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 /Wi. (This statement was added by the PRIME system upon its validation)

\\

I Westinghouse Non-Proprietary Class 3 2-23 300 5.0E+22 l.3E+22. 5.cE+22) 1.oe+ 22. 1.3Ei-22>

250 l.oE+21. 2.0f+21) l.3E+:.O 0.7E+:lOJ l.oE+:.0. l.3E+:ll)

< 1.0E+2J 200

.... ! 150 lOO 50 0

0 50 100 150 200 250

% (a*J Figure 2.4-7 Top Half Core Cross Section View Fast Neutron Fluence Map at 8 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY)

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 300

!I.OE+22 1.3E+ 22. !I.OE+ Zl'J 1.0E+21. 2.cl:+21) 6.7E+20. 1.cl:+21) 1.3E+ 20. 6. 7E+ 2JJ 1.0E+:.10. l.3E+2J) 1.ll:+:IO 0

-50

-100

! -150 lq

-200

-250

-300 Westinghouse Non-Proprietary Class 3 2-24 0

50 100 150 200 250 (oJ Figure 2.4-8 Bottom Half Core Cross Section View Fast Neutron Fluence Map at 8 = 0° for the Selected Westinghouse 3-Loop Plant Unit 2 at 80 Years SLR (72 EFPY)

WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-25 2.5 FIGURE OF MERIT AND POWER DENSITY Reference 13 documents the figures of merit (FOM) and power densities of the selected Westinghouse 3-loop plant Units 1 and 2 for the purpose of MRP-227-A applicability evaluation (Reference 14). The results from Reference 13 are presented below in Table 2.5-1 and Table 2.5-2. Please note that Reference 13 assumed Unit 1 fuel Cycles 21 through 24 and Unit 2 fuel Cycles 20 through 23 had a rated power of 2940 MWt. This is a conservative estimate for each fuel cycle.

Table 2.5-1 Unit 1 Power Density and Figures of Merit [W/cm 2

]

Unit 1 U1C21 U1C22 U1C23 U1C24 Max Limit Power Density 110.76 110.76 110.76 110.76 110.76 124.00 A (Type 1)° 61.25 59.37 57.66 59.12 61.25 68.00 B (Type 2)

60.86 58.27 54.00 61.56 61.56 68.00 C (Type 2)

58.78 55.10 62.31 67.06 67.06 68.00

For definition please see Reference 14 Table 2.5-2 Unit 2 Power Density and Figures of Merit [W/cm2]

Unit 2 U2C20 U2C21 U2C22 U2C23 Max Limit Power Density 110.76 110.76 110.76 110.76 110.76 124.00 A (Type 1)"

62.06 61.47 61.90 67.17 67.17 68.00 B (Type 2)

56.40 58.95 58.52 58.10 58.95 68.00 C (Type 2)

53.36 56.06 55.07 50.89 56.06 68.00

For definition please see Reference 14 WCAP-18353-NP Margin to Limit (%)

11.95 11.02 10.47 1.40 Margin to Limit(%)

11.95 1.24 15.36 21.29 October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2.6 REACTOR INTERNALS COMPONENTS MATERIAL RELIABILITY PROGRAM (MRP) FLUENCE SCREENING 2-26 Four different radiation-related aging mechanisms, one of which is broken into two subcategories for irradiation embrittlement, have been investigated in this analysis: stress relaxation (SR) in bolts, irradiation embrittlement (IE) in cast austenitic stainless steel (CASS), IE in austenitic stainless steel, irradiation-assisted stress corrosion cracking (IASCC), and void swelling (VS).

The fast neutron fluence (E> 1.0 MeV) ranges described in MRP-175 (Reference 10) are:

~ l.3xl 022 n/cm2 ( ~20 dpa) MRP-175 screening threshold for void swelling

~ 2xl021 n/cm2 (~3 dpa) MRP-175 minimum dose IASCC (requires 89 ksi stress)

~ Ix1021 n/cm2 (~1.5 dpa) MRP-175 screening threshold for IE in austenitic stainless steel

~ 6.7 xl020 n/cm2 (~1 dpa) MRP-175 screening threshold for IE CASS

~ 1.3xl 020 n/cm2 ( ~0.2 dpa) MRP-175 screening threshold for stress relaxation in bolts

< 1.3x1020 n/cm2, low fluence The fast neutron fluence (E> 1.0 MeV) ranges described in MRP-191 Rev. 1 (Reference 6) are:

Region 1 : cp < 1 x 1020 n/cm2 MRP-191 conservative screening threshold for stress relaxation in bolts Region 2: lx1020 n/cm2 (0.15 dpa) ~ cp < 7xl020 n/cm2 MRP-191 conservative screening threshold for IASCC Region 3: 7x1020 n/cm2 (I dpa) ~ cp < lx1021 n/cm2 Region 4: lxl021 n/cm2 (1.5 dpa) ~ cp < lx1022 n/cm2 Region 5: lx1022 n/cm2 (15 dpa) ~ cp < 5x1022 n/cm2 MRP-191 conservative screening threshold for void swelling and screening threshold for IASCC without effective stress Region 6: 5x1022 n/cm2 (75 dpa) ~ cp In this analysis, a combination of the MRP-175 and MRP-191 fluence ranges was used:

cp < Ixto20 n/cm2 (0.15 dpa) lxl020 n/cm2 (0.15 dpa) ~ <p < 1.3x1020 n/cm2 (0.2 dpa) 1.3xl020 n/cm2 (0.2 dpa) ~ <p < 6.7xl020 n/cm2 (1 dpa) 6.7xl020 n/cm2 (1 dpa) ~ cp < lx1021 n/cm2 (1.5 dpa) lx1021 n/cm2 (1.5 dpa) ~ <p < 2x1021 n/cm2 (3 dpa) 2xl021 n/cm2 (3 dpa) ~<p < lx1022 n/cm2 (15 dpa) lx1022 n/cm2 (15 dpa) ~ <p < l.3xl022 n/cm2 (20 dpa) l.3xl022 n/cm2 (20 dpa) ~ <p < 5xl022 n/cm2 (75 dpa) 5x1022 n/cm2 (75 dpa) ~ <p WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-27 The reactor internals components at the selected Westinghouse 3-loop plant, Units 1 and 2, were identified in Reference 17. Herein, these components were compared to the fast neutron fluence maps presented in Sections 2.3 and 2.4 in order to determine the fast neutron fluence levels on the components at 60 years (51.6 EFPY for Unit 1 and 52.8 EFPY for Unit 2) and 80 years operation (72 EFPY) in support of the SLR. The results are presented in Table 2.6-1 through Table 2.6-4, where X's mark the selected Westinghouse 3-loop plant specific component fluence ranges and O's mark the industry component fluence ranges from Reference 15.

The fluence maps for 51.6 EFPY and 72 EFPY for Unit 1 of the selected Westinghouse 3-loop plant are similar and the fluence maps for 52.8 EFPY and 72 EFPY for Unit 2 of the selected Westinghouse 3-loop plant are similar. This can be seen by comparing the maps in Section 2.3 and 2.4. The evaluated fluence levels for the various components are the same between 51.6 EFPY and 72 EFPY for Unit 1 and the same between 52.8 EFPY and 72 EFPY for Unit 2, except for the following components:

Control Rod Guide Tube Assemblies and Flow Downcomers:

o Guide tube support pins o

Support pin nuts Upper Support Column Assemblies:

o Column bases Baffle and Former Assembly:

o Baffle plates o

Former plates Bottom Mounted Instrumentation (BMI) Column Assemblies:

o BMI column collars Lower Core Plate and Fuel Alignment Pins:

o Lower core plate Neutron Panels / Thermal Shield:

o Thermal shield or neutron panels WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-28 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY Assembly Subassembly Control Rod Upper Guide Tube Internals Assemblies and Assembly Flow Downcomers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Anti-rotation studs and nuts 304 ss Yes Anti-rotation 316 ss No studs and nuts Bolts 316 ss Yes Bolts 304 ss No C-tubes 304 ss Yes Enclosure ins 304 ss Yes Upper guide tube 304 ss Yes enclosures Upper guide tube CFS No enclosures Flanges-304 ss Yes intermediate Flanges-CFS No intermediate Flan es - lower 304 ss Yes Flan es - lower CFS No Flexureless 304SS No inserts Flexures AX-750 No Guide 304 ss Yes

!ates/cards lxl020 n/cm2 Sq,<

1.3x1020 n/cm2 x,o x,o x,o X,O x,o x,o x,o x,o x,o 0

Evaluated Fluence for Unit I at 51.6 EFPY<1l 1.3xl020 n/cm2 Sep<

6.7x1020 n/cm2 x,o 0

x,o 0

X,O 0

0 2x10 21 n/cm2 S ep<

lxl 022 n/cm2 0

lxl022 n/cm2 S ep <

l.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-29 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY Assembly Subassembly Control Rod Upper Guide Tube Internals Assemblies and Assembly Flow Downcomers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Guide p !ates/ cards 316L SS No Guide CFS No

!ates/cards Guide tube AX-750 No 316 ss Yes 304 ss Yes CFS No Inserts 304 ss No Lock bars 304 ss Yes Sheaths 304 ss Yes Support pin 316 ss No cover late Support pin cover plate cap 316 ss No screws Support pin cover plate 304 ss No locking caps and tie stra s Su Ort in nuts AX-750 No 316 ss Yes lxl040 n/crn2

~ q> <

1.3xla2° n/cm2 X

X,O x,o x,o x,o X

Evaluated Fluence for Unit 1 at 51.6 EFPY(ll l.3xt02° n/cm2

S q> <

6.7x1020 n/cm2 x,o x,o x,o x,o 0

x,o 0

0 2x1021 n/crn2

(j) <

lx1022 n/cm2 lxl022 n/cm2

(j) <

1.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-30 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY MRP-191 [6]

Evaluated Fluence for Unit 1 at 51.6 EFPY0 >

lxl020 1.3xHi0 2xl021 lxl022 n/cm2 n/cm2 n/cm2 n/cm2 Assembly Subassembly Component Material Applicable

5 q, <

5 q> <

5 q, <

Sq, <

1.3xl020 6.7x1020 lxl022 1.3x1022 n/cm2 n/cm2 n/cm2 n/cm2 Control Rod Upper Guide Tube Water flow slot Internals Assemblies and ligaments 304 ss Assembly Flow Yes x,o x,o x,o 0

Down comers Mixing Mixing devices 304 ss Devices No Mixing devices CFS Yes x,o x,o x,o x,o x,o Upper Core Fuel Plate and Fuel alignment pins 316 ss Alignment Pin No Fuel 304 ss ins Yes x,o x,o X,O x,o late 304 ss Yes 0

0 X,O x,o x,o 0

304 ss No Protective skirt 316 ss bolts No Protective skirt 304 ss lock bars No Protective skirt 304 ss dowel ms No Protective skirt 316 ss dowel ms No WCAP-18353-NP October 2018 Revision 0

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Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-31 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY MRP-191 [6]

Evaluated Fluence for Unit I at 51.6 EFPY<1l lxl020 1.Jx.1020 2xl021 lx1022 n/cm2 n/cm2 n/cm2 n/cm2 Subassembly Component Material Applicable

S q> <.

S cp <

l.3xl020 6,7xl020 lx1022 I.3x1022 Upper Instrumentation Conduit and Supports Bolting Boltin

Brackets, clamps, terminal blocks, and conduit stra s

Brackets, clamps, terminal blocks, and conduit stra s Conduit seal assembly - body, tubesheets Conduit seal assembly - tubes Conduits 316 ss Yes 304 ss Yes 304 ss Yes 302 ss No CFS Yes 304 ss Yes 304 ss Yes 304 ss Yes 304 ss Yes 304 ss No 304L SS Yes 304 ss Yes n/cm2 n/cm2 n/cm2 n/cm2 x,o X,O x,o x,o x,o 0

x,o x,o x,o 0

x,o x,o x,o x,o x,o X,O X,O x,o WCAP-18353-NP October 2018 Revision 0

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Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-32 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY MRP-191 [6]

Evaluated Fluence for Unit 1 at 51.6 EFPY<1>

lx1020 1.3xl020 2x1021 lxl022 n/cm2 n/cm2 n/cm2 n/cm2 Subassembly Component Material Applicable

$ cp <

Sq> <

$ cp <

cp <

Upper Plenum Upper Support Column Assemblies Upper Support Plate Assembly UHI flow column bases UHI flow columns Adapters Bolts Column bases Column bases Column bodies Extension tubes Nuts Nuts Bolts CFS 304 ss 304 ss 316 ss 304 ss CFS 304 ss 304 ss 304 ss 304 ss 304L SS 304 ss 302 ss 316 ss 1.3x1020 6.7xl020 lxl022 1.3xl022 n/cm2 n/cm2 n/cm2 n/cm2 No No Yes x,o Yes x,o x,o x,o X, O No Yes X

X,O 0

0 Yes x,o x,o X,O Yes x,o Yes X,O Yes X,O 0

0 No Yes x,o Yes X, O Yes x,o 1---------+-----+-----+----+------+----+------+----+----+----+-----+-----4 Dee beam ribs Deep beam stiffeners Inverted top hat ITH flan e 304 ss 304 ss 304 ss CFS 304 ss Yes x,o Yes x,o No No No WCAP-18353-NP October 2018 Revision 0

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Westinghouse Non-Proprietary Class 3 2-33 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY MRP-191 [6]

Evaluated Fluence for Unit 1 at 51.6 EFPY(ll lxl02°'

l.3x1020*

2xl0 21 lx1022 n/cm2 n/cm2 n/cm2 n/cm2 Assembly Subassembly Component Material Applicable

$ cp <

S tp <

5 q> <

1.3x1020 6.7:x,1/4020 lxl 022 l.3x1022 n/cm2 n/cm2 n/cm2 n/cm2 Upper Upper Support Inverted top hat Internals Plate Assembly (ITH) upper 304 ss No Assembly SU ort late Lock ke s 316 ss No 304 ss Yes X,O 304 ss Yes X,O Upper 304 ss Yes SU ort late x,o Upper CFS No SU ort late Upper support 304 ss Yes rin or skirt x,o Upper support CFS No rin or skirt Lower Baffle and Baffle bolting Internals Former 304 ss Yes Assembly Assembly lock devices X

X X,O X,O x,o x,o Baffle-ed e bolts 316 ss Yes 0

X,O X,O X,O Baffle-ed e bolts 347 ss No Baffle !ates 304 ss Yes 0

0 x,o x,o X,O x,o Baffle-former 316 ss Yes bolts 0

x,o x,o X,O Baffle-former 347 ss No bolts Barrel-former 316 ss Yes bolts x,o x,o x,o x,o 0

0 WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

X,O x,o x,o x,o

Westinghouse Non-Proprietary Class 3 2-34 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY Assembly Subassembly Lower Baffle and Internals Former Assembly Assembly Bottom Mounted Instrumentation (BMI) Column Assemblies Core Barrel WCAP-18353-NP MRP-191 [6]

Component Material Applicable Barrel-former bolts 347 ss No Former !ates 304 ss Yes BMI column bodies 304 ss Yes x,o BMI column 316 ss Yes x,o bolts BMI 304 ss Yes column collars BMI column 304 ss No cruciforms BMI column CF8 Yes x,o cruciforms BMI column 304 ss Yes X,O extension bars BMI column 304 ss Yes x,o extension tubes BMI column 304L SS Yes x,o lock ca s BMI column 304 ss Yes nuts Core barrel 304 ss Yes x,o flan e lxl020 n/cm2 S ep <

1.3xl020 n/cm2 x,o Evaluated Fluence for Unit 1 at 51.6 EFPY(J) 1.3xia2° 2x1021 n/cm2 n/cm2 Sq,<

S ep<

6.7xl020 lx1022 n/cm2 n/cm2 0

x,o X,O x,o 0

x,o 0

x,o x,o x,o x,o 0

x,o lx1022 n/cm2 S ep <

l.3x1022 n/cm2 x,o X,O 0

0 x,o 0

0 0

x,o x,o 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

X,O

Westinghouse Non-Proprietary Class 3 2-35 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY Assembly Subassembly Lower lnternals Core Barrel Assembly Diffuser Plate Flux Thimbles (Tubes)

Head Cooling S ra Nozzles WCAP-18353-NP MRP-191 [6]

Component Material Applicable Core barrel outlet nozzles 304 ss Yes Upper core barrel (includes 304 ss Yes UFW, UGW, and UAW Lower core barrel (includes LGW,LFW, 304 ss Yes MAW,and LAW Diffuser Plate 304 ss No Flux thimble 304 ss No tube Ju s Flux thimble 308 ss Yes tube Ju s Flux thimble 316 ss No tube Ju s Flux thimble A600 No tube Ju s Flux thimbles 316 ss Yes tubes Flux thimbles A600 No (tubes)

Head cooling 304 ss Yes s ra nozzles lxl020 n/cm2

S ep <

1.3xl020 n/cm2 x,o x,o x,o x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 51.6 EFPY<1>

1.3xlQ~0 2xl021 n/cm2 n/cm2

Sep<

6.7x1020

q> <

lx1022 n/cm2 n/cm2 0

x,o x,o x,o x,o x,o x,o x,o x,o lxl022 n/cm2

S q> <

l.3x1022 n/cm2 0

0 x,o X,O October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) x,o X,O

Westinghouse Non-Proprietary Class 3 2-36 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY Assembly Subassembly Lower Irradiation Internals Specimen Assembly Guides Lower Core Plate and Fuel Alignment Pins Lower Support Column Assemblies WCAP-18353-NP MRP-191 [6]

Component Material Applicable Irradiation specimen guide 304 ss Yes Irradiation specimen guide 316 ss No bolts Irradiation specimen lock 304L SS No 304 ss Yes Fuel alignment 304 ss Yes pins Fuel alignment 316 ss No ins LCP-fuel alignment pin 316 ss No bolts LCP-fuel alignment pin 304L SS No lock ca s Lower core late 304 ss Yes XL lower core 304 ss No late Lower support column bodies CFS Yes lxl020 n/cm2

Sq, <

l.3xJ020 n/cm2 x, o x,o X,O x,o x,o Evaluated Fluence for Unit 1 at 51.6 EFPY<

1>

1.3xl020 n/cm2

~cp<

6.7x10:zo n/cm2 x,o 0

0 X, O x,o x,o x,o 2x10 21 n/cm2

s q><

lx1022 n/cm2 x,o x,o x,o lx1022 n/cm2

sq><

1.3x1022 n/cm2 x, o X, O x,o 0

0 0

October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon-its validation) 0

Westinghouse Non-Proprietary Class 3 2-37 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY Assembly Subassembly Lower Lower Support Internals Column Assembly Assemblies Lower Support Casting or Forging Neutron Panels ffhermal Shield WCAP-18353-NP MRP-191 [6]

Component Material Applicable Lower support 304 ss No column bodies Lower support 304 ss No column bolts Lower support 316 ss Yes column bolts Lower support 304 ss Yes column nuts Lower support 304 ss Yes column sleeves Lower support CFS No casting Lower 304 ss Yes SU Neutron panel 316 ss No bolts Neutron panel 304 ss No lock ca s Neutron panel 304L SS No lock ca s Thermal 316 ss Yes shield bolts Thermal 316 ss Yes shield dowels lxl020 n/cm2

$ q> <

1.3x1020 n/cm2 X

x,o 0

x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 51.6 EFPY0 >

1.3xt<>2° 2x1021 n/cm2 n/cm2 Sq><

6.7x1020 Sep<

lx1022 n/cm2 n/cm2 x,o 0

x,o x,o lxl 022 n/cm 2

<p <

1.3x1022 n/cm2 x,o x,o 0

0 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-38 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY MRP-191 [6]

Evaluated Fluence for Unit 1 at 51.6 Efpy<1>

lxl020 1.3xl020 2x1021 lxl022 n/cm2 n/em2 n/cm2 n/cm2 Assembly Subassembly Component Material Applicable

5 q, <

~ cp <

S <p <

1.3xl020 6.7x102iJ lx1022 l.3x1022 Lower Neutron Panels Internals

/Thermal Assembly Shield Radial Support Keys Secondary Core Support (SCS)

Assembly WCAP-18353-NP Thermal shield dowels 304 ss Thermal 304 ss shield flexures Thermal 316 ss shield flexures Thermal shield 304 ss or neutron anels Radial support 304 ss ke bolts Radial support 316 ss ke bolts Radial support 304 ss ke lock ke s Radial 304 ss SU ort ke s SCS base plate 304 ss SCS bolts 316 ss SCS energy 304 ss absorber scs t

304 ss CFS 304 ss CFS Yes x,o No Yes x,o Yes x,o No Yes x,o Yes x,o Yes x,o Yes x,o Yes x,o Yes x,o Yes x,o No Yes X,O No n/cm2 n/cm2 n/cm2 n/cm2 x,o x,o x,o x,o x,o x,o X,O 0

0 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-39 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY Assembly Subassembly Lower Secondary Internals Core Support Assembly (SCS)

Assembly Interfacing Interfacing Components Components WCAP-1 8353-NP MRP-191 [6]

Evaluated Fluence for Unit 1 at 51.6 EFPY0 >

Component SCS lock keys Upper and lower tie !ates Clevis insert bolts Clevis insert lock ke s Clevis insert lock ke s Clevis inserts Clevis inserts Clevis inserts Clevis insert dowe1s<2>

Clevis bearing Stellite wear surface<2>

Head and vessel alignment pin bolts Head and vessel alignment pin lock cu s Head and vessel Material Applicable 304 ss Yes 304 ss Yes AX-750 Yes A600 Yes 316 ss No A600 Yes 304 ss No Stellite Yes A600 Yes Stellite Yes 316 ss Yes 304L SS Yes 304 ss Yes x,o x,o x;o x,o x,o x,o x,o X,O x,o x,o x,o 1x102Q n/cm2

S ep <

1.3xl<i° n/cm2 1.3xto2° n/cm2

Sq,<

6.7xl020 n/cm2 2xl021 n/cm2

5 <p <

lxl022 n/cm2

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) lxl022 n/cm2

S ep <

l.3xl022 n/cm2 October 2018 Revision 0

Westinghouse Non-Proprietary Class 3 2-40 Table 2.6-1 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 51.6 EFPY MRP-191 [6]

Evaluated Fluence for Unit 1 at 51.6 EFPY<1l lxl020 1.3xl010 2xl021 lxl0 22 n/cm2 n/cm2 n/cm2 n/cm2 Assembly Subassembly Component Material Applicable

s; cp <

~ q> <

S q> <

1.3x1020 6.7x10io l xl022 l.3x1022 Interfacing Components Notes:

n/cm2 n/cm2 n/cm2 n/cm2 Interfacing Internals hold-down 304 ss Yes Components s rin x,o Internals hold-down 403 ss No s rin Upper core plate 304 ss Yes ali ment ins x,o x,o x,o 0

Thermal 304 ss Yes sleeves<3l x,o (1) Components with multiple X's and O's indicate components that span more than one fluence range, where all applicable fluence ranges are noted.

(2) The clevis insert dowels and clevis bearing Stellite wear surface have been added as seen within Table 5-14 of Reference 18. Both of these components are located with the clevis insert, between the lower core support and vessel. These components fall into the lowest fluence range based on location.

(3) The thermal sleeves have been added as seen within Table 5-14 of Reference 18. This component is located above the upper internals and falls into the lowest fluence range based on location.

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-41 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Control Rod Guide Tube Assemblies and Flow Downcomers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Anti-rotation studs and nuts 304 ss Yes Anti-rotation studs 316 ss No and nuts Bolts 316 ss Yes Bolts 304 ss No C-tubes 304 ss Yes Enclosure ins 304 ss Yes Upper guide tube 304 ss Yes enclosures Upper guide tube CFS No enclosures Flanges-304 ss Yes intermediate Flanges -

CFS No intermediate Flan es - lower 304 ss Yes Flan es - lower CFS No Flexureless inserts 304SS No Flexures AX-750 No Guide !ates/cards 304 ss Yes lxl020 n/cm2

$ q, <

1.3x1020 n/cm2 x,o x,o X,O x,o X,O x,o x,o x,o X,O 0

Evaluated Fluence for Unit 1 at 72 EFPv<1l 1.3x102<1 n/cm2

~q><

6.7x1020 n/cm2 x,o 0

x,o 0

X,O 0

0 0

2x1021 n/cm2

'.:: q> <

lx1022 n/cm2 lx1022 n/cm2

'.:: q> <

l.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-42 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Control Rod Guide Tube Assemblies and Flow Down comers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Guide plates/cards 316L SS No Guide I ates/cards CFS No Guide tube AX-750 No ins 316 ss Yes

!ates 304 ss Yes CFS No Inserts 304 ss No Lock bars 304 ss Yes Sheaths 304 ss Yes Support pin cover 316 ss No late Support pin cover 316 ss No late ca screws Support pin cover plate locking caps 304 ss No and tie stra s Su AX-750 No 316 ss Yes lx1020 n/cm2

~ q> <

1.3x1020 n/cm2 X,O x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY(I) l.3xl020*

n/cm2

$ cp <

6.7xl020 n/cm2 x,o x,o x,o 0

X,O 0

2xl021 n/cm2

~ q> <

lxl022 n/cm2 x,o 0

lxl022 n/cm2

~ cp <

1.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-43 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Control Rod Guide Tube Assemblies and Flow Downcomers Mixing Devices Upper Core Plate and Fuel Alignment Pin Upper lnstrumentati on Conduit and Supports WCAP-18353-NP MRP-191 [6]

Component Material Applicable Water flow slot ligaments 304 ss Yes x,o Mixing devices 304 ss No Mixin devices CF8 Yes x,o Fuel alignment pins 316 ss No Fuel 304 ss Yes 304 ss Yes 0

Protective Skirt 304 ss No Protective skirt 316 ss No bolts Protective skirt 304 ss No lock bars Protective skirt 304 ss No dowel ins Protective skirt 316 ss No dowel ins Bolting 316 ss Yes x,o lx1020 n/cm2

~q,<

1.3x1020 n/cm2 x,o x,o 0

Evaluated Fluence for Unit 1 at 72 EFPYC'l 1.3x1020 n/cm2

$q><

6.7xl020 n/cm2 x,o 0

x,o x,o X,O x,o x,o x,o x,o x,o x,o 2xl021 n/cm2

~ cp <

lx1022 n/cm2 x,o 0

l xl022 n/cm2

~ <p <

1.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-44 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Upper Instrumentation Conduit and Supports Upper Plenum WCAP-18353-NP MRP-191 [6]

Component Material Applicable Bolting 304 ss Yes Brackets, clamps, terminal blocks, 304 ss Yes and conduit stra s Brackets, clamps, terminal blocks, 302 ss No and conduit stra s Brackets, clamps, terminal blocks, CF8 Yes and conduit stra s Conduit seal assembly - body, 304 ss Yes tubesheets Conduit seal 304 ss Yes assembly - tubes Conduits 304 ss Yes Flan e base 304 ss Yes 304 ss No 304L SS Yes 304 ss Yes UHi flow column CF8 No bases UHI flow columns 304 ss No lxl020 n/cm2

$.q> <

1.3x1020 n/cm2 x,o x,o X,O X,O x,o x,o x,o x,o X,O x,o X,O X,O Evaluated Fluence for Unit 1 at 72 EFPY('l l.3x1020 n/cm"

$cp<

6.7xlOW n/cm2 x,o 0

x,o 0

X,O 2xl021 n/cm2

$ cp <

lx1022 n/cm2 lxl022 n/cm2

$ <p <

1.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-45 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Upper Support Column Assemblies Upper Support Plate Assembly WCAP-18353-NP MRP-191 [6]

Component Material Applicable Adapters 304 ss Yes Bolts 316 ss Yes Column bases 304 ss No Column bases CFS Yes Column bodies 304 ss Yes Extension tubes 304 ss Yes Flan es 304 ss Yes Lock ke s 304 ss Yes 304L SS No Nuts 304 ss Yes Nuts 302 ss Yes Bolts 316 ss Yes Dee beam ribs 304 ss Yes Deep beam 304 ss Yes stiffeners Flan e 304 ss No Flan e CFS No Inverted top hat 304 ss No ITH flan e Inverted top hat (ITH) upper 304 ss No SU ort late Lock ke s 316 ss No Lock ke s 304 ss Yes lx1020 n/cm2 S q, <

1.3x1020 n/cm2 X,O X,O x,o x,o x,o x,o x,o X,O X,O x,o x,o x,o X,O Evaluated Fluence for Unit 1 at 72 EFPY< 1J l.3x1020 n/cm2

$<p<

6.7xl020 n/cm2 X,O X,O X,O x,o 0

0 x,o 0

0 2x10 21 n/cm2 Sep <

lx1022 n/cm2 lx1022 n/cm2 S ep<

1.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-46 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Upper Support Plate Assembly Baffle and Former Assembly WCAP-18353-NP MRP-191 [6]

Component Material Applicable Ribs 304 ss Yes x,o Upper 304 ss Yes x,o SU ort late Upper CF8 No SU Ort late Upper support 304 ss Yes x,o rin or skirt Upper support CF8 Yes rin or skirt Baffle bolting 304 ss Yes lock devices Baffle-ed e bolts 316 ss Yes Baffle-ed e bolts 347 ss No Baffle lates 304 ss Yes Baffle-former 316 ss Yes bolts Baffle-former 347 ss No bolts Barrel-former 316 ss Yes bolts Barrel-former 347 ss No bolts Former )ates 304 ss Yes lx1020 n/cm2

5q,<

1.3xl020 n/cm2 Evaluated Fluence for Unit 1 at 72 Efpy<1>

l.3xl010 n/cm2

~q><

6.7x1020 n/cm2 X

X x,o 0

0 0

x,o x,o x,o 0

0 x,o 2x1021 n/cm2

5 <p <

lx1022 n/cm2 x,o x,o x,o x,o x,o x,o lxl 022 n/cm2

5 cp <

1.3x1022 n/cm2 x,o x,o X,O x,o x,o x,o X,O x,o 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

X,O x,o X,O x,o x,o

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-47 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Bottom Mounted Instrumentation (BMI) Column Assemblies Core Barrel WCAP-18353-NP MRP-191 [6]

Ix1020 n/cm2 Component Material Applicable

$<p<

l.3x1020 n/cm2 BMI column bodies 304 ss Yes x,o BMI column bolts 316 ss Yes x,o BMI 304 ss Yes column collars BMI column 304 ss No cruciforms BMI column CFS Yes x,o cruciforms BMI column 304 ss Yes x,o x,o extension bars BMI column 304 ss Yes x,o extension tubes BMI column 304L SS Yes x,o lock ca s BMI column nuts 304 ss Yes Core barrel flange 304 ss Yes x,o Core barrel 304 ss Yes x,o outlet nozzles Upper core barrel (includes UFW, 304 ss Yes x,o x,o UGW,andUAW Evaluated Fluence for Unit I at 72 EFPY0 >

1.3xl020 2x1021 n/cm2 n/cm2

$cp<

6.7xl020

$cp<

lx1022 n/cm2 n/cm2 0

x,o 0

x,o x,o x, o x,o 0

x,o 0

lxl022 n/cm2

$cp<

l.3xl022 n/cm2 0

0 x,o X,O 0

0 x,o x,o 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-48 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Core Barrel Diffuser Plate Flux Thimbles (Tubes)

Head Cooling S ra Nozzles Irradiation Specimen Guides WCAP-18353-NP MRP-191 [6]

Component Material Applicable Lower core barrel (includes LGW, 304 ss Yes X,O LFW, MAW, and LAW Diffuser Plate 304 ss No Flux thimble 304 ss No tube lu s Flux thimble 308 ss Yes tube lu s Flux thimble 316 ss No tube lu s Flux thimble A600 No tube lu s Flux thimbles 316 ss Yes x,o (tubes)

Flux thimbles A600 No (tubes)

Head cooling 304 ss Yes x,o s ra nozzles Irradiation specimen guide 304 ss Yes x,o Irradiation specimen guide 316 ss No bolts lx1020 n/cm2

q> <

l.3x1<>2° n/cm2 x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY<1l 1.3x1020 n/cm2

~cp<

6.7x1<>2° n/cm2 x,o x,o x,o x,o x,o x,o x,o 2xl021 n/cm2

$ q> <

lxl022 n/cm2 x,o x,o lxl022 n/cm2

$ q> <

l.3x1022 n/cm2 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) x, o x,o

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-49 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Irradiation Specimen Guides Lower Core Plate and Fuel Ali nment Pins Lower Core Plate and Fuel Alignment Pins Lower Support Column Assemblies WCAP-18353-NP MRP-191 [6]

Component Material Applicable Irradiation specimen lock 304L SS No 304 ss Yes X,O Fuel alignment 304 ss Yes pins Fuel alignment 316 ss No ins LCP - fuel alignment pin 316 ss No bolts LCP-fuel alignment pin 304L SS No lock ca s Lower core late 304 ss Yes XL lower core 304 ss No late Lower support CFS Yes x,o column bodies Lower support 304 ss No column bodies Lower support 304 ss No column bolts Lower support 316 ss Yes column bolts lx.1020 n/cm2

sq> <

l.3xl021>

n/cm2 X,O Evaluated Fluence for Unit 1 at 72 EFPY< 1>

1.3xto20 2x1021 n/cm2 n/cm2

c:; q,<

6.7xl~

q> <

lxl022 n/cm2 n/cm2 x,o 0

0 X,O x,o X,O X,O x,o x,o x,o lxl022 n/cm2

q> <

l.3x1022 n/cm2 X,O x,o x,o x,o 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 0

Westinghouse Non-Proprietary Class 3 2-50 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Assembly Subassembly Lower Lower Support Internals Column Assembly Assemblies Lower Support Casting or Forging Neutron Panels ffhermal Shield WCAP-18353-NP MRP-191 [6]

Component Material Applicable Lower support 304 ss Yes column nuts Lower support 304 ss Yes column sleeves Lower support casting CFS No Lower 304 ss Yes SU Neutron panel 316 ss No bolts Neutron panel 304 ss No lock ca s Neutron panel 304L SS No lock ca s Thermal 316 ss Yes shield bolts Thermal 316 ss Yes shield dowels Thermal 304 ss Yes shield dowels Thermal 304 ss No shield flexures lx1020 n/cm2 5 q, <

1.3xl020 n/cm2 X

x,o 0

x,o x,o x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY('l 1.3xl020 2xl021 n/cm.2 n/cm2

~q, <

6.7xl020

$ q> <

lxl022 n/cm2 n/cm2 0

x,o x,o x,o lxl022 n/cm2

Sep<

l.3xl022 n/cm2 0

0 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-51 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Neutron Panels

/Thermal Shield Radial Support Keys Secondary Core Support (SCS)

Assembly WCAP-18353-NP MRP-191 [6]

Component Material Applicable Thermal shield flexures 316 ss Yes Thermal shield or 304 ss Yes neutron anels Radial support 304 ss No ke bolts Radial support 316 ss Yes ke bolts Radial support 304 ss Yes ke lock ke s Radial 304 ss Yes SU ort ke s SCS base plate 304 ss Yes SCS bolts 316 ss Yes SCS energy 304 ss Yes absorber scs t

304 ss Yes scs t

CFS No 304 ss Yes CFS No 304 ss Yes Upper and lower 304 ss Yes tie )ates lxl<r° n/cm2

$ q> <

l.3xl020 n/cm2 x,o x,o X,O x,o x,o x,o x,o x,o X,O x,o X,O x,o X,O X,O Evaluated Fluence for Unit 1 at 72 EFPY('l l.3xlc>2° n/cm2

~,<

6.7x1<>2° n/cm2 x,o x,o x,o x,o 2xl021 n/cni2

~q><

lx1022 n/cm2 0

lx1022 n/cm2

~ q> <

l.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Interfacing Components Westinghouse Non-Proprietary Class 3 2-52 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Interfacing Components WCAP-18353-NP MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 Efpy<'l Component Clevis insert bolts Clevis insert lock ke s Clevis insert lock ke s Clevis inserts Clevis inserts Clevis inserts Clevis insert dowels(2l Clevis bearing Stellite wear surface<2l Head and vessel alignment pin bolts Head and vessel alignment pin lock cu s Head and vessel Internals hold-down s rin Material AX-750 A600 316 ss A600 304 ss Stellite A600 Stellite 316 ss 304L SS 304 ss 304 ss 403 ss Applicable Yes x,o Yes x,o No Yes x,o No Yes x,o Yes x,o Yes x,o Yes x,o Yes x,o Yes x,o Yes x,o No lxl020 n/cm2

~cp<

l.3xlcr° n/cm2 1.3xl<>2° n/cm.2

~cp<

6.7xl<Y° n/cm2 2xl021 n/cm2 lxl022 n/cm2 Sep <

Sep <

lxl022 l.3x1022 n/cm2 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Interfacing Components Westinghouse Non-Proprietary Class 3 2-53 Table 2.6-2 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 1 at 72 EFPY Subassembly Interfacing Components MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 EFPY0 1 lx1020 1.3xl020 2xl021 lxl022 n/cm2 n/cm2 n/cm2 n/cm2 Component Material Applicable S ep <

1.3x1<>2°

$cp<

6.7xl<>2°

Sep<

lx1022

Sq><

l.3xl022 n/cm2 n/cm2 n/cm2 n/cm2 Upper core plate ali x,o x,o x,o 0

304 SS Yes The 304 SS Yes X, O Notes:

(1) Components with multiple X's indicate components that span more than one fluence range, where all applicable fluence ranges are noted.

(2) The clevis insert dowels and clevis bearing Stellite wear surface have been added as seen within Table 5-14 of Reference 18. Both of these components are located with the clevis insert, between the lower core support and vessel. These components fall into the lowest fluence range based on location.

(3) The thermal sleeves have been added as seen within Table 5-14 of Reference 18. This component is located above the upper internals and falls into the lowest fluence range based on location.

WCAP-1 8353-NP

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

October 2018 Revision 0

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-54 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Control Rod Guide Tube Assemblies and Flow Downcomers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Anti-rotation studs and nuts 304 ss Yes Anti-rotation 316 ss No studs and nuts Bolts 316 ss Yes Bolts 304 ss No C-tubes 304 ss Yes Enclosure ins 304 ss Yes Upper guide tube 304 ss Yes enclosures Upper guide tube CFS No enclosures Flanges-304 ss Yes intermediate Flanges-CFS No intermediate Flan es - lower 304 ss Yes Flan es - lower CFS No Flexureless inserts 304SS No Flexures AX-750 No Guide lates/cards 304 ss Yes lxl02&

n/cm2 Sep<

1.3x1<>2° n/cm2 x,o x,o x,o X,O X,O x,o x,o x,o x,o 0

Evaluated Fluence for Unit 1 at 72 EFPY0 l 1.3xl<Y0 n/cm2 Sep<

6.7xtoJG n/cm2 X,O 0

x,o 0

X,O 0

0 2xl021 n/cm2 S ep <

lxl022 n/cm2 0

lxl022 n/cm2

s q> <

l.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-55 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Control Rod Guide Tube Assemblies and Flow Downcomers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Guide plates/cards 316L SS No Guide !ates/cards CFS No Guide tube AX-750 No ins 316 ss Yes

!ates 304 ss Yes Housin CFS No Inserts 304 ss No Lock bars 304 ss Yes Sheaths 304 ss Yes Support pin cover 316 ss No late Support pin cover 316 ss No late ca screws Support pin cover plate locking caps 304 ss No and tie stra s Su AX-750 No 316 ss Yes lxl020 n/cm2

~cp <

1.3x1020 n/cm2 X

x,o X,O x,o x,o X

Evaluated Fluence for Unit 1 at 72 EFPY<1>

1.3xlif0 n/cm2

fcp<

6.7x1<>2° n/cm2 x,o x,o x,o 0

X,O 0

2x1021 n/cm2

~q> <

lx1022 n/cm2 x,o 0

lxl022 n/cm2

~ q> <

l.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-56 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Control Rod Guide Tube Assemblies and Flow Down comers Mixing Devices Upper Core Plate and Fuel Alignment Pin Upper Instrumentation Conduit and Supports WCAP-18353-NP MRP-191 [6]

Component Material Applicable Water flow slot ligaments 304 ss Yes Mixin devices 304 ss No Mixin devices CFS Yes Fuel alignment pins 316 ss No Fuel 304 ss Yes ns u

late 304 ss Yes Protective Skirt 304 ss No Protective skirt 316 ss No bolts Protective skirt 304 ss No lock bars Protective skirt 304 ss No dowel ins Protective skirt 316 ss No dowel ins Bolting 316 ss Yes Boltin 304 ss Yes lxl020 n/cm2

$cp<

1.3xtG2° n/cm2 x,o x,o X,O x,o 0

0 x,o X,O Evaluated Fluence for Unit 1 at 72 EFPY(IJ 1.3x1<>2° n/cm2

$cp<

6.7x1020 n/cm2 x,o 0

x,o X,O x,o x,o x,o x,o x,o x,o x,o 2x1021 n/cm2

$ <p <

lxl022 n/cm2 x,o 0

lx1022 n/cm2

=5 <p <

l.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-57 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Upper Instrumentation Conduit and Supports Upper Plenum Upper Support Column Assemblies WCAP-18353-NP MRP-191 [6]

Component Material Applicable Brackets, clamps, terminal blocks, 304 ss Yes and conduit straps Brackets, clamps, terminal blocks, 302 ss No and conduit stra s Brackets, clamps, terminal blocks, CFS Yes and conduit stra s Conduit seal assembly - body, 304 ss Yes tubesheets Conduit seal 304 ss Yes assembl -tubes 304 ss Yes 304 ss Yes 304 ss No 304L SS Yes 304 ss Yes UHi flow column CFS No bases UHi flow columns 304 ss No Adapters 304 ss Yes Bolts 316 ss Yes 1x1020 n/cm2

$ <p <

L3x1020 n/cm 2

x,o x,o x,o x,o x,o x,o x,o X,O X,O X,O X,O x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY<'l 1.3xl020 n/cm 2

$lp<

6.7x1020 n/cm2 x,o 0

x,o 0

X,O x,o x,o 2x10 21 n/cm2

~ cp <

lxl022 n/cm2 x,o lxl022 n/cm2

~ cp <

l.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-58 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Upper Support Column Assemblies Upper Support Plate Assembly WCAP-18353-NP MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 EFPY<1l Component Column bases Column bases Column bodies Extension tubes Nuts Nuts Bolts Dee beam ribs Deep beam stiffeners Inverted top hat (ITH) flan e Inverted top hat (ITH) upper su ort late Ribs Material Applicable 304 ss No CFS Yes 304 ss Yes 304 ss Yes 304 ss Yes 304 ss Yes 304L SS No 304 ss Yes 302 ss Yes 316 ss Yes 304 ss Yes 304 ss Yes 304 ss No CFS No 304 ss No 304 ss No 316 ss No 304 ss Yes 304 ss Yes txl020 l.3xl020 2xl021 n/cm2 n/cm2 n/cm2

$q><

1.3x1020

!:: q, <

6.7xl<r°

S <p <

lx1022 n/cm2 n/cm.2 n/cm2 X

X,O 0

0 X,O x,o x,o x,o x,o X, O 0

0 x,o x,o x,o x,o X,O X,O x,o

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) lxl022 n/cm2

s (j) <

l.3x1022 n/cm2 October 2018 Revision 0

Assembly Upper Internals Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-59 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Upper Support Plate Assembly Baffle and Former Assembly WCAP-18353-NP MRP-191 [6]

lx1020 n/cm2 Component Material Applicable Sq,<

1.3xl020 n/cm2 Upper support plate 304 ss Yes x,o Upper CFS No SU Ort late Upper support 304 ss Yes x,o rin or skirt Upper support CFS No rin or skirt Baffle bolting 304 ss Yes lock devices Baflle-ed e bolts 316 ss Yes Baftle-ed e bolts 347 ss No Baffle )ates 304 ss Yes Baffle-former 316 ss Yes bolts Baffle-former 347 ss No bolts Barrel-former 316 ss Yes bolts Barrel-former 347 ss No bolts Former Iates 304 ss Yes Evaluated Fluence for Unit 1 at 72 EFPY< 1>

1.3xl020 n/cm2

$q,<

6.7x1020 n/cm2 X

X x,o 0

0 0

x,o 0

x,o x,o x,o 0

X,O x,o 2xl021 n/cm2 S q> <

lxl022 n/cm2 x,o x,o X,O x,o x,o X,O lxl022 n/cm2 S q> <

l.3x1022 n/cm2 x,o x,o x,o X,O X,O X,O x,o X,O 0

0 x,o X,O October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) x,o x,o X,O x,o x,o

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-60 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Bottom Mounted Instrumentation (BMI) Column Assemblies Core Barrel WCAP-18353-NP MRP-191 [6]

Component Material Applicable BMI column bodies 304 ss Yes x,o BMI column bolts 316 ss Yes X,O BMI 304 ss Yes column collars BMI column 304 ss No cruciforms BMI column CFS Yes x,o cruciforms BMI column 304 ss Yes x,o extension bars BMI column 304 ss Yes x,o extension tubes BMI column 304L SS Yes X,O lock ca s BMI column nuts 304 ss Yes Core barrel flan e 304 ss Yes X,O Core barrel 304 ss Yes x,o outlet nozzles Upper core barrel (includes UFW, 304 ss Yes X,O UGW, and UAW) lx1026 n/cm2 S q> <

1.3xl020 n/cm2 x,o x,o Evaluated Fluence for Unit 1 at 72 EfpyOl l.3xl<Y° 2xl021 n/cm2 n/cm2

S q, <

6.7x1<>2°

s cp <

lx1022 n/cm2 n/cm2 0

X,O 0

X,O X,O x,o x,o 0

x,o 0

lxl022 n/cm2

s cp <

l.3x1022 n/cm2 0

0 x,o 0

0 0

x,o x,o 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-61 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Core Barrel Diffuser Plate Flux Thimbles (Tubes)

Head Cooling S ra Nozzles Irradiation Specimen Guides WCAP-18353-NP MRP-191 [6]

Component Material Applicable Lower core barrel (includes LGW, 304 ss Yes x,o LFW, MAW, and LAW Diffuser Plate 304 ss No Flux thimble 304 ss No tube lu s Flux thimble 308 ss Yes tube lu s Flux thimble 316 ss No tube lu s Flux thimble A600 No tube lu s Flux thimbles 316 ss Yes x,o (tubes)

Flux thimbles A600 No (tubes)

Head cooling 304 ss Yes x,o s ra nozzles Irradiation specimen guide 304 ss Yes x,o Irradiation specimen guide 316 ss No bolts lxl020 n/cm2

$q><

1.3xl020 n/cm2 x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY<1>

1.3xt<>2° n/cm2

Sq,<

6.7x1020 n/cm2 x,o x,o x,o x,o x,o x,o x,o 2x1021 n/cm2

S q> <

lx1022 n/cm2 x,o x,o l xl022 n/cm2

S q> <

1.3x1 022 n/cm2 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) x,o x,o

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-62 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Irradiation Specimen Guides Lower Core Plate and Fuel Alignment Pins Lower Support Column Assemblies WCAP-18353-NP MRP-191 [6]

Component Material Applicable Irradiation specimen lock 304L SS No 304 ss Yes x,o Fuel alignment 304 ss Yes pins Fuel alignment 316 ss No ins LCP-fuel alignment pin 316 ss No bolts LCP-fuel alignment pin 304L SS No lock ca s Lower core late 304 ss Yes XL lower core 304 ss No late Lower support column bodies CFS Yes x,o Lower support 304 ss No column bodies Lower support 304 ss No column bolts txt<>2° n/crn2 Sep<

1.3x1020 n/cm2 x,o Evaluated Fluence for Unit 1 at 72 EFPY< 1>

1.3xt<>2° 2x1021 n/cm2 n/cm2 Sep<

6.7x1020 S ep<

lx1022 n/cm2 n/cm2 x,o 0

0 X,O x,o x,o x,o x,o x,o lx I 022 n/cm 2

sq> <

1.3x1022 n/cm2 X,O X,O x,o 0

0 0

October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 0

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-63 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Lower Support Column Assemblies Lower Support Casting or Forging Neutron Panels

/Thermal Shield WCAP-18353-NP MRP-191 [6]

Component Material Applicable Lower support 316 ss Yes column bolts Lower support 304 ss Yes column nuts Lower support 304 ss Yes column sleeves Lower support casting CFS No Lower 304 ss Yes SU Neutron panel 316 ss No bolts Neutron panel 304 ss No lock ca s Neutron panel 304L SS No lock ca s Thermal 316 ss Yes shield bolts Thermal 316 ss Yes shield dowels Thermal 304 ss Yes shield dowels Thermal 304 ss No shield flexures lxl020 n/cm2

Sep <

l.3xl020 n/cm2 X

X,O 0

x,o x,o x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 72 Efpy< 1>

l.3xt<>2° 2xl021 n/cm2 n/cm2

S <p <

6.7x1<>2°

s cp <

lxl022 n/cm2 n/cm2 x,o 0

x,o x,o x,o lxl022 n/cm2

s cp <

l.3xl022 n/cm2 x,o x,o 0

0 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-64 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Subassembly Neutron Panels ffhermal Shield Radial Support Keys Secondary Core Support (SCS)

Assembly WCAP-18353-NP MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 EFPY(')

Component Thermal shield flexures Thermal shield or neutron anels Radial support ke bolts Radial support ke bolts Radial support ke lock ke s Radial su ort ke s SCS base plate SCS bolts SCS energy absorber Upper and lower tie !ates Material Applicable 316 ss Yes 304 ss Yes 304 ss No 316 ss Yes 304 ss Yes 304 ss Yes 304 ss Yes 316 ss Yes 304 ss Yes 304 ss Yes CF8 No 304 ss Yes CF8 No 304 ss Yes 304 ss Yes lx1020 1.3xlo2° 2xl021 n/cm2 n/cm2 n/cm2

$q><

1.3x102.0

~cp<

6.7xl<r° Sep<

lxl022 n/cm2 n/cm2 n/cm2 x,o x,o x,o x,o x,o X,O x,o 0

0 x,o X,O x,o x,o x,o x,o X,O X,O x,o x,o

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) lxl022 n/cm2 Sep<

l.3x1022 n/cm2 October 2018 Revision 0

Westinghouse Non-Proprietary Class 3 2-65 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Assembly Subassembly Interfacing Interfacing Components Components WCAP-18353-NP MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 EfpyOl Component Clevis insert bolts Clevis insert lock ke s Clevis insert lock ke s Clevis inserts Clevis inserts Clevis inserts Clevis insert dowe1s<2l Clevis bearing Stellite wear surface<2l Head and vessel alignment pin bolts Head and vessel alignment pin bolts Head and vessel alignment pin lock cu s Head and vessel hold-down s rin Material Applicable AX-750 Yes A600 Yes 316 ss No A600 Yes 304 ss No Stellite Yes A600 Yes Stellite Yes 316 ss Yes 316 ss Yes 304L SS Yes 304 ss Yes 304 ss Yes x,o x,o x,o X, O X,O x,o x,o x,o x,o x,o x,o lxl020 n/cni2

sq><

1.3x1020 n/crn.2 1.3x1020 n/cm 2

Sep<

6.7x1020 n/cmz 2x1021 n/cm2 lxl022 n/cm2

S ep <

S ep<

lxl022 1.3x1022 n/cm2 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

~ ----- -------- ---------------------- --------

Westinghouse Non-Proprietary Class 3 2-66 Table 2.6-3 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 52.8 EFPY Assembly Interfacing Components Notes:

MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 EFPY0 >

lx1020 l.3x1<>2° 2xl021 lx1022 n/cm2 n/cm2 n/cm2 n/cm2 Subassembly Component Material Applicable

S ep <

s <p <

S ep<

s <p <

l.3x1020 6.7xl020 lxl 022 l.3xl022 n/cm2 n/cm2 n/cm2 n/cm2 Interfacing Internals 403 ss No Components hold-down s r*

Up 304 ss Yes x,o x,o x,o 0

ali The 304 ss Yes x,o (1) Components with multiple X's and O's indicate components that span more than one fluence range, where all applicable fluence ranges are noted.

(2) The clevis insert dowels and clevis bearing Stellite wear surface have been added as seen within Table 5-14 of Reference 18. Both of these components are located with the clevis insert, between the lower core support and vessel. These components fall into the lowest fluence range based on location.

(3) The thermal sleeves have been added as seen within Table 5-14 of Reference 18. This component is located above the upper internals and falls into the lowest fluence range based on location.

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-67 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Subassembly Control Rod Guide Tube Assemblies and Flow Down comers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Anti-rotation studs and nuts 304 ss Yes Anti-rotation 316 ss No studs and nuts Bolts 316 ss Yes Bolts 304 ss No C-tubes 304 ss Yes Enclosure ins 304 ss Yes Upper guide tube 304 ss Yes enclosures Upper guide tube CFS No enclosures Flanges-304 ss Yes intermediate Flanges-CFS No intermediate Flan es - lower 304 ss Yes Flan es - lower CFS No Flexureless 304SS No inserts Flexures AX-750 No Guide 304 ss Yes I ates/cards lxl 020 n/cm2

S ep<

l.Jxl020 n/cm2 x,o x,o x,o X,O X,O x,o x,o x,o x,o 0

Evaluated Fluence for Unit 1 at 72 Efpy< 1l 1.3xl020 n/cm2

S ep<

6.7xt<>29 n/cm2 x,o 0

x,o 0

X,O 0

0 0

2xl021 n/cm2

S ep <

lxl022 n/cm2 lxl022 n/cm2

~ ep <

1.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-68 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Assembly Subassembly Control Rod Upper Guide Tube Internals Assemblies and Assembly Flow Downcomers WCAP-18353-NP MRP-191 [6]

Component Material Applicable Guide plates/cards 316L SS No Guide CFS No I ates/ cards Guide tube AX-750 No ins 316 ss Yes lates 304 ss Yes CFS No Inserts 304 ss No Lock bars 304 ss Yes Sheaths 304 ss Yes Support pin 316 ss No cover late Support pin cover plate cap 316 ss No screws Support pin cover plate 304 ss No locking caps and tie stra s Su ort AX-750 No 316 ss Yes lxl020 n/cm2

$cp<

l.3x1020 n/cm2 x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY< 1>

1.3xl020 n/cm2

$ cp <

6.7xta2° n/crn2 x,o x,o x,o x,o 0

x,o 0

0 2x1021 n/cm2

$ cp <

lx1022 n/cm2 lx1022 n/cm2

$ cp <

1.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-69 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY MRP-191 [6]

Subassembly Component Material Control Rod Guide Tube Water flow slot Assemblies and ligaments 304 ss Flow Downcomers Mixing Devices Mixin devices 304 ss Mixin devices CF8 Upper Core Plate Fuel and Fuel alignment pins 316 ss Alignment Pin Fuel 304 ss 304 ss Protective Skirt 304 ss Protective skirt 316 ss bolts Protective skirt 304 ss lock bars Protective skirt 304 ss dowel ins Protective skirt 316 ss dowel ins Upper Instrumentation Bolting 316 ss Conduit and Supports Boltin 304 ss WCAP-18353-NP lx1020 n/cm2 Applicable

S q, <

1.3xl020 n/cm2 Yes x,o x,o No Yes x,o x,o No Yes Yes 0

0 No No No No No Yes x,o Yes x,o Evaluated Fluence for Unit 1 at 72 EFPY0 >

1.3xI<>2° n/cm2

$ q><

6.7xl020 n/cm2 x,o 0

X,O x,o x,o x,o x,o x,o x,o x,o x,o 2x1021 n/cm2

$<p<

lxl022 n/cm2 x,o 0

lxl 022 n/cm2

S <p <

l.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-70 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Subassembly Upper Instrumentation Conduit and Supports Upper Plenum WCAP-18353-NP MRP-191 [6]

Component Material Applicable Brackets, clamps, terminal blocks, 304 ss Yes and conduit stra s Brackets, clamps, terminal blocks, 302 ss No and conduit stra s Brackets, clamps, terminal blocks, CFS Yes and conduit stra s Conduit seal assembly - body, 304 ss Yes tubesheets Conduit seal 304 ss Yes assembl - tubes Conduits 304 ss Yes 304 ss Yes 304 ss No Lo s

3O4L SS Yes Su s

304 ss Yes UHi flow column CFS No bases UHi flow 304 ss No columns lx1020 n/cm2

Sq,<

1.3xl020 n/cm2 x,o x,o x,o x,o x,o x,o x,o x,o X,O x,o x,o Evaluated Fluence for Unit I at 72 EfpyOl l.3x1020 n/cm2

$q,<

6.7x1020 n/cm2 x,o 0

x,o 0

x,o 2xl021 n/cm2

$ cp <

lxl022 n/cm2 lx1O22 n/cm2

S ep <

l.3xlO22 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Upper Internals Assembly Westinghouse Non-Proprietary Class 3 2-71 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Subassembly Upper Support Column Assemblies Upper Support Plate Assembly WCAP-18353-NP MRP-191 [6]

Component Material Applicable Adapters 304 ss Yes Bolts 316 ss Yes Column bases 304 ss No Column bases CFS Yes Column bodies 304 ss Yes Extension tubes 304 ss Yes 304 ss Yes 304 ss Yes 3O4L SS No Nuts 304 ss Yes Nuts 302 ss Yes Bolts 316 ss Yes Dee beam ribs 304 ss Yes Deep beam 304 ss Yes stiffeners Flan e 304 ss No Flan e CFS No Inverted top hat 304 ss No ITH flan e Inverted top hat (ITH) upper 304 ss No SU ort late Lock ke s 316 ss No 304 ss Yes lx1O20 n/cm2 S q, <

1.3x1020 n/cm2 x,o x,o X,O X,O x,o X,O x,o x,o x,o x,o x,o x,o X,O Evaluated Fluence for Unit 1 at 72 EFPY<1>

1.3x1020 n/cm2 S <p<

6.7x1020 n/cm2 x,o x,o x,o x,o 0

0 X,O 0

0 2xlO21 n/cm2 S q, <

lxl022 n/cm2 lx1O22 n/cm2 Sep<

l.3x1022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-72 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Assembly Subassembly Upper Upper Support Internals Assembly Plate Assembly Lower Baffle and Internals Former Assembly Assembly WCAP-18353-NP MRP-191 [6]

lxl020 n/cm2 Component Material Applicable

Sq><

1.3xlO20 n/cm2 Ribs 304 ss Yes x,o Upper 304 ss Yes x,o SU ort late Upper CF8 No SU ort late Upper support 304 ss Yes x,o rin or skirt Upper support CF8 No rin or skirt Baffle bolting 304 ss Yes lock devices Baffle-ed e bolts 316 ss Yes Baffle-ed e bolts 347 ss No Baffle lates 304 ss Yes Baffle-former 316 ss Yes bolts Baffle-former 347 ss No bolts Barrel-former 316 ss Yes bolts Barrel-former 347 ss No bolts Former lates 304 ss Yes Evaluated Fluence for Unit 1 at 72 EFPY0 l 1.3x1020 n/cm2

Sq,<

6.7xto2<>

n/cm2 X

X x,o 0

0 0

x,o 0

x,o x,o x,o 0

0 x,o 2xl021 n/cm2

Sq><

lx1022 n/cm2 x,o x,o x,o x,o x,o x,o lx1022 n/cm2

q> <

1.3xl022 n/cm2 x,o x,o x,o x,o x,o x,o x,o x,o 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) x,o x,o x,o x,o x,o

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-73 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY MRP-191 [6]

Subassembly Component Material Applicable Bottom Mounted Instrumentation BMI column 304 ss Yes (BMI) Column bodies Assemblies BMI column 316 ss Yes bolts BMI 304 ss Yes column collars BMI column 304 ss No cruciforms BMI column CF8 Yes cruciforms BMI column 304 ss Yes extension bars BMI column 304 ss Yes extension tubes BMI column 304L SS Yes lock ca s BMI column nuts 304 ss Yes Core Barrel Core barrel 304 ss Yes flan e Core barrel 304 ss Yes outlet nozzles Upper core barrel (includes UFW, 304 ss Yes UGW,and UAW)

WCAP-18353-NP lxl020 n/cm2 Sq><

1.3x1020 n/cm2 x,o x,o x,o x,o x,o x,o x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY0 >

l.3xl020 2x1021 n/cm2 n/cm2

Sep<

6.7x1020 sq><

lxl022 n/cm2 n/cm2 0

x,o 0

x,o x,o x,o x,o 0

x,o 0

lxl 022 n/cm2 Sep<

1.3x1022 n/cm2 0

0 x,o x,o 0

0 x,o X,O October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-74 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY MRP-191 [6]

Subassembly Component Material Applicable Lower core Core Barrel barrel (includes 304 ss Yes LGW,LFW, MAW,andLAW Diffuser Plate Diffuser Plate 304 ss No Flux Thimbles Flux thimble 304 ss No (Tubes) tube Ju s Flux thimble 308 ss Yes tube Ju s Flux thimble 316 ss No tube Ju s Flux thimble A600 No tube Ju s Flux thimbles 316 ss Yes (tubes)

Flux thimbles A600 No (tubes)

Head Cooling Head cooling 304 ss Yes S ra Nozzles s ra nozzles Irradiation Irradiation 304 ss Yes Specimen Guides specimen guide 316 ss No bolts Irradiation specimen lock 304L SS No ca s WCAP-18353-NP lx1020 n/cm2

Sq,<

1.3xl020 n/cm2 x,o x,o x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY0 >

l.3xl020 n/cm2 Sep<

6.7xla2° n/cm2 x,o x,o x,o x,o x,o x,o x,o 2xl021 n/cm2

Sq,<

lx1022 n/cm2 x,o x,o lx1022 n/cm2

s <p <

1.3xl022 n/cm2 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

X,O x,o

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-75 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY MRP-191 [6]

Subassembly Component Material Applicable Irradiation Specimen Guides Specimen plugs 304 ss Yes Lower Core Plate Fuel alignment and Fuel 304 ss Yes Alignment Pins pins Fuel alignment 316 ss No ins LCP-fuel alignment pin 316 ss No bolts LCP-fuel alignment pin 304L SS No lock ca s Lower core late 304 ss Yes XL lower core 304 ss No late Lower Support Lower support Column CFS Yes Assemblies column bodies Lower support 304 ss No column bodies Lower support 304 ss No column bolts Lower support 316 ss Yes column bolts WCAP-18353-NP lxl020 n/cm2

5<p<

l.3x1020 n/cm2 x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY< 1l l.3xto-2° 2xl021 n/cm2 n/cm2

5q><

6.7xlo-2°

5 <p <

1 xl 022 n/cm2 n/cm2 x,o 0

0 x,o x,o x,o x,o

x,o x,o x,o lxl022 n/cm2

5 <p <

1.3x1022 n/cm2 x,o x,o x,o x,o 0

0 x,o x,o October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation) 0

Assembly Lower Internals Assembly Westinghouse Non-Proprietary Class 3 2-76 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Subassembly Lower Support Column Assemblies Lower Support Casting or Forging Neutron Panels ffhermal Shield WCAP-18353-NP MRP-191 [6]

Component Material Applicable Lower support 304 ss Yes column nuts Lower support 304 ss Yes column sleeves Lower support CFS No casting Lower 304 ss Yes SU Neutron panel 316 ss No bolts Neutron panel 304 ss No lock ca s Neutron panel 304L SS No lock ca s Thermal 316 ss Yes shield bolts Thermal 316 ss Yes shield dowels Thermal 304 ss Yes shield dowels Thermal 304 ss No shield flexures Thermal 316 ss Yes shield flexures lxl020 n/cm2

~cp<

1.3x1020 n/cm2 X

x,o 0

x,o x,o x,o x,o x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY0 >

1.3x1020 2xl021 n/cm2 n/cm2

$ q> <

6.7x1020

~cp<

lx1022 n/cm2 n/cm2 0

x,o x,o x,o x,o lx1022 n/cm2

~cp<

1.3x1022 n/cm2 0

0 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-77 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 Efpy< 1l lxlO20 l.3xlO20 2x1021 lxl022 n/cm2 n/cm2 n/cm2 n/cm2 Assembly Subassembly Component Material Applicable Sep<

l.3xl020

$cp<

6.7xl02°

5cp<

lxl022

5cp<

l.3xlO22 n/cm2 n/cm2 n/cm2 n/cm2 Lower Neutron Panels Thermal shield or Internals ffhermal Shield neutron panels 304 ss Yes x,o x,o x,o x,o x,o 0

Assembly Radial Radial support 304 ss No Support Keys ke bolts Radial support 316 ss Yes x,o ke *bolts Radial support 304 ss Yes x,o ke lock ke s Radial 304 ss Yes x,o Secondary Core Support (SCS)

SCS base plate 304 ss Yes x,o Assembly SCS bolts 316 ss Yes x,o SCS energy 304 ss Yes x,o absorber scs t

304 ss Yes X,O CFS No 304 ss Yes x,o CFS No 304 ss Yes X,O Upper and lower 304 ss Yes x,o tie !ates Interfacing Interfacing Clevis insert AX-75O Yes x,o Com onents Com onents bolts WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse on-Proprietary Class 3 2-78 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Assembly Subassembly Interfacing Interfacing Components Components WCAP-18353-NP MRP-191 [6]

Component Material Applicable Clevis insert A6OO Yes lock ke s Clevis insert 316 ss No lock ke s Clevis inserts A6OO Yes Clevis inserts 304 ss No Clevis inserts Stellite Yes Clevis insert A6OO Yes dowe1s<2>

Clevis bearing Stellite wear Stellite Yes surface<2>

Head and vessel alignment pin 316 ss Yes bolts Head and vessel alignment pin 3O4L SS Yes lock cu s Head and vessel 304 ss Yes 304 ss Yes Internals 403 ss No Upper core plate 304 ss Yes ali nment ins lxlO20 n/cm2

$cp<

1.3xl020 n/cm2 x,o x,o x,o x,o x,o x,o x,o x,o x,o x,o x,o Evaluated Fluence for Unit 1 at 72 EFPY('l l.3xl020 n/cm2

$q,<

6.7xI<>2° n/cm2 x,o 0

2xl021 n/cm2

$ cp <

lxl022 n/cm2 lxlO22 n/cm2

$cp<

l.3xl022 n/cm2 October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 2-79 Table 2.6-4 MRP-227-A Plant Applicability Fluence Screening Results for the Selected Westinghouse 3-Loop Plant Unit 2 at 72 EFPY Assembly Interfacing Com onents Notes:

MRP-191 [6]

Evaluated Fluence for Unit 1 at 72 EFPY(ll l xlO20 l.3xta2° 2xlO21 lxlO22 n/cm2 n/cm2 n/cm2 n/cm2 Subassembly Component Material Applicable

$ cp <

$cp<

~ cp <

l.3xlO20 6.7x1020 lxl022 l.3x1022 n/cm2 n/cm2 n/cm2 n/cm2 Interfacing Thermal 304 ss Yes Com onents sleeves<3>

(I) Components with multiple X's indicate components that span more than one fluence range, where all applicable fluence ranges are noted.

(2) The clevis insert dowels and clevis bearing Stellite wear surface have been added as seen within Table 5-14 of Reference 18. Both of these components are located with the clevis insert, between the lower core support and vessel. These components fall into the lowest fluence range based on location.

(3) The thermal sleeves have been added as seen within Table 5-14 of Reference 18. This component is located above the upper internals and falls into the lowest fluence range based on location.

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

Westinghouse Non-Proprietary Class 3 3-1 3

REFERENCES

1.

Regulatory Guide 1.190, "Calculational and Dosimetry Methods for Determining Pressure Vessel Neutron Fluence," Agencywide Documents Access and Management System (ADAMS) No.

ML010890301, U.S. Nuclear Regulatory Commission, March 2001.

2.

Westinghouse Report for the Extended Beltline Pressure Vessel Fluence Evaluations Applicable to the Selected Westinghouse 3-loop Plant Units I & 2, September 2015.*

3.

Materials Reliability Program: Framework and Strategies for Managing Aging Effects in Reactor Internals (MRP-134). EPRI, Palo Alto, CA: 2005. 1008203.

4.

RSICC Computer Code Collection CCC-650, "DOORS3.2, One-, Two-and Three-Dimensional Discrete Ordinates Neutron/Photon Transport Code System," Available from the Radiation Safety Information Computational Center, Oak Ridge National Laboratory, April 1998.

5.

RSICC Data Library Collection DLC-185, "BUGLE-96, Coupled 47 Neutron, 20 Gamma-Ray Group Cross Section Library Derived from ENDF/B-VI for LWR Shielding and Pressure Vessel Dosimetry Applications," Available from the Radiation Safety Information Computational Center, March 1996.

6.

Materials Reliability Program: Screening, Categorization, and Ranking of Reactor Internals Components for Westinghouse and Combustion Engineering PWR Design (MRP-191, Revision 1). EPRI, Palo Alto, CA: 2016. 3002007960.

7.

Westinghouse Report, WCAP-14040-A, Rev. 4, "Methodology Used to Develop Cold Overpressure Mitigating System Setpoints and RCS Heatup and Cooldown Limit Curves,"

ADAMS No. ML050120209, May 2004.

8.

Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines (MRP-227-A). EPRI, Palo Alto, CA: 2011. 1022863.

9.

Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines (MRP-227-Rev. 0). EPRI, Palo Alto, CA: 2008. 1016596.

10.

Materials Reliability Program: PWR Internals Material Aging Degradation Mechanism Screening and Threshold Values (MRP-175). EPRI, Palo Alto, CA: 2005. 1012081.

11.

Materials Reliability Program: Functionality Analysis for Westinghouse and Combustion Engineering Representative PWR Internals (MRP-230). EPRI, Palo Alto, CA: 2008. 1016597.

12.

Materials Reliability Program: Aging Management Strategies for Westinghouse and Combustion Engineering PWR Internals (MRP-232). EPRI, Palo Alto, CA: 2008. 1016593.

13.

Utility Calculation Note for the Derivation ofthe Selected Westinghouse 3-loop Plant Units 1&2 Inputs for MRP-227-A Fluence Assessment, May 2014.*

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

I Westinghouse Non-Proprietary Class 3 3-2

14.

EPRI Letter MRP 2013-025 Attachment 1, "MRP-227-AApplicability Guidelines for Combustion Engineering and Westinghouse Pressurized Water Reactor Designs," October 2013.

15.

Materials Reliability Program Letter, MRP 2017-038, "Transmittal of Preliminary Results from MRP-191 Expert Panel Review in Support of Subsequent License Renewal at U.S. PWR Plants,"

December 15, 2017.

16.

Westinghouse Report, WCAP-18205-NP, "Reactor Internals Fluence Evaluation for a Westinghouse 3-loop Plant with Twin Units - Subsequent License Renewal," December 2016.

17.

Westinghouse Letter for the Drawing Tree Applicable to the Selected Westinghouse 3-loop Plant Units 1 and 2, February 2018.*

18.

Westinghouse Letter, LTR-AMLR-18-4, Rev. 1, "Interim Guidance for the Pressurized Water Reactor Internals Inspection and Evaluation Guidelines, MRP-227, for Subsequent License Renewal - Westinghouse and Combustion Engineering-Designed Reactor Vessel Internals,"

July 9, 2018.

The plant-specific information in the references were removed per the customer's request, the corresponding references are attached electronically in Westinghouse Electronic Document Management System.

WCAP-18353-NP October 2018 Revision 0

- - This record was final approved on 10/19/2018 9:53:02 AM. (This statement was added by the PRIME system upon its validation)

ML20246G709

Text

SUMMARY

SUMMARY

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