ML18347A207

ACRS Presentation Chapter 2 - Site Characteristics and Site Parameters, PM-1218-63753, Revision 0

ML18347A207
Person / Time
Site:	NuScale
Issue date:	12/18/2018
From:	Arthur J, Infanger P NuScale
To:	Office of New Reactors
References
LO-1218-63755 PM-1218-63753, Rev 0
Download: ML18347A207 (24)

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L0-1218-63755  :

"ACRS Presentation Chapter 2 - Site Characteristics and Site Parameters," PM-1218-63753, Revision O NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

NuScale Nonproprietary ACRS Presentation Chapter 2 -

Site Characteristics and Site Parameters J. J. Arthur, P.E.

Manager, Structures and Design Analysis

! Paul lnfanger I

I I Licensing Project Manager

.I December 18, 2018 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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Purpose

• Provide FSAR Chapter 2 overview

- Site characteristics and parameters

- RAls

- SER open and confirmatory items 2

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Chapter 2 Overview

/

• Site parameters are generally consistent with past applicant precedents and 2014 EPRI Advanced LWR Utility Requirements Document 3

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Conceptual Site Layout EAB, LPZ urbine Build in 0 ad ~ste Control Building Building on -limiting

_____ d Re ctor Build in _, on -Limiting Analytical X/Q Analytical X/Q Distance urbme Building lim1tm Analytical X/Q Distance

( 00 feet) EAB, LPZ 4

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Site Design Parameters

• Design assumes site parameters representative of a reasonable number of potential plant site locations in the U.S. A summary of the parameters is in FSAR Table 2.0-1 and provided in following slides.

• COL Item 2.0-1: demonstrate site-specific characteristics are bounded by design parameters specified in Table 2.0-1. If not bounded, demonstrate acceptability of site-specific values.

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2.1 Geography, Demography

• Minimum distance from EAB to nearest release point -

400 ft

• Minimum distance from LPZ outer boundary to nearest release point - 400 ft

• COL Item 2.1-1: describe site geographic and demographic characteristics 6

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2.2 Nearby Facilities

• No hazards from nearby industrial, transportation, or military facilities postulated

• No aircraft hazards postulated

• COL Item 2.2-1: describe nearby industrial, transportation, and military facilities; demonstrate design acceptability for each potential accident or provide site-specific design alternatives 7

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2.3 Meteorology

• Max precipitation rate [HMR (NOAA), EPRI URD]

- 19.4 inches/hr (6.3 inches for 5 min period)

• Roof snow load [HMR (NOAA),. EPRI URD]

- normal I extreme 50 psf / 75 psf

• 100-yr return 3-sec wind gust (ASCE/SEI 7)

- 145 mph with importance factor of 1.15 for RXB, CRB, RWB

• Design basis tornado (RG 1. 76)

- max wind speed 230 mph

- translational speed 46 mph

- max rotational speed 184 mph (radius 150 ft)

- pressure drop / rate 1 .2 psi / 0 .5 psi/sec 8

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2.3 Meteorology (cont'd)

• Tornado missile spectra (RG 1. 76 R 1, Table 2, Region 1)

• Design basis hurrican e (RG 1.221)

- missile spectra (RG 1.221 RO, Tables 1 & 2)

- max wind speed 290 mph

• Zero % exceeda nce values (historical limit excluding peaks < 2 hr) used for CRVS design

- max outdoor design dry bulb temp 115°F

- min outdoor design dry bulb temp -40°F

- max coincident wet bulb temp 80°F

- max non-coinc ident wet bulb temp 81°F 9

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2.3 Meteorology (cont'd) 0

• One /o exceedance values used for RBX and RWB HVAC design, and SCWS and CWS design

- max outdoor design dry bulb temp 100°F

- min outdoor design dry bulb temp -10°F

- max coincident wet bulb temp 77°F

- max non-coincident wet bulb temp 80°F

• Five% exceedance values used for TGB HVAC design

- max outdoor design dry bulb temp 95°F

- min outdoor design dry bulb temp -5°F

- max coincident wet bulb temp 77°F 10 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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2.3 Meteorology {cont'd)

• Atmospheric dispersion X/Q methodology based on ARCON96

- NuScale site boundary (400 ft) vs traditional LWR

(- 2,600 ft - 19,700 ft)

- NuScale applies ARCON96 methodology based on RG 1.194 for improved accuracy in predicting atmospheric dispersion for a short EAB/LPZ distance, as opposed to a PAVAN methodology based on RG 1.145, which was developed for longer distances

- Methodology described in Accident Source Term topical report Rev. 2 11 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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2.3 Meteorology {cont'd)

• Accident release X/Q at EAB/LPZ boundary 2 hr 6.22E-04 s/m3 8 hr 5.27E-04 s/m3 24 hr 2.41 E-04 s/m3

• 96 hr 2.51 E-04 s/m 3 720 hr 2.46E-04 s/m 3

• Accident release X/Q at MCR/TSC door and HVAC intake 2 hr 6.SOE-03 s/m 3 8 hr 5.34E-03 s/m 3 24 hr 2.32E-03 s/m 3 4 days 2.37E-03 s/m 3 30 days 2.14E-03 s/m3 12 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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2.3 Meteorology (cont'd)

• Routine release X/Q and D/Q (bounding offsite dose)

- undepleted/no decay 1.44E-05 s/m 3

- undepleted/2.26-day decay 1.44E-05 s/m 3

- depleted/8.00-day decay 1.44E-05 s/m 3

- D/Q 1.44E-07 l/m2

• COL Item 2.3-1: describe site-specific meteorological characteristics for Section 2.3.1 through Section 2.3.5 13 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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2.4 Hydrology

• Max flood elevation (EPRI URD)

- 1 ft below baseline plant elevation

• Max groundwater elevation (EPRI URD)

- 2 ft below baseline plant elevation

• COL Item 2.4-1: investigate and describe site-specific hydrologic characteristics for Section 2.4.1 through Section 2.4.14 14 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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2.5 Geology, Seismology

• Design uses geologic, seismologic, and geotechnical engineering parameters representative of a reasonable number of potential plant site locations in the U. S ..

• Two DBEs: CSDRS and CSDRS-HF

• Spectra bound most of central and eastern U.S., and sites in less seismically active portions of western U.S.

• Fault displacement potential none

• Min soil bearing capacity 75 ksf

• Lateral soil variability uniform ( < 20° dip)

• Min internal friction soil angle 30°

• Min shear wave velocity > 1000 fps .

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2.5 Geology, Seismology (cont'd)

• Liquefaction potential none

• Max settlement for RXB, CRB, RWB

- Total 4inches

- Tilt . 0.5 inch per 50 ft of building length or 1 inch total in any direction

- Differential 0.5 inch (RXB-CRB, RXB-RWB)

• Slope failure potential none

• COL Item 2.5-1: describe the site-specific geology, seismology, and geotechnical characteristics for Section 2.5.1 through Section 2.5.5 16 PM-1218-63753 Revision: 0 ' Copyright 2018 by NuScale Power, LLC.

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RAIS

• ----~~-- ----:-~~ ~*----i FSAR Resolv~ esolved Suppl Resp

1. RAIS Confirmatory Section Closed ~losed In Eval 2.3 5 2.4 1

~~ 5 1

• Unresolved Closed issue involves analysis of accidental release of radioactive liquid effluents in groundwater and sutiace water using BTP 11-6 methodology and guidance (RAI 8750 Question 02.04.13-1) 17 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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SER Open Item 02.03.04-1

• Acceptability of method for calculating accident offsite X/Q values for EAB and LPZ, which is the outer boundary from the AST topical report TR-0915-17565 18 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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SER Confirmatory Item 02.03.04-1

• Use "EAB and Outer Boundary of the LPZ" instead of "Security Owner Controlled Area Fence" and "Site Owner Controlled Area Fence"

• Changes incorporated in DCD Rev. 2.

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Abbreviations ASCE/SEI -American Society of Civil Engineers/Structural Engineering Institute AST - accident source term COL - combined license CRB - Control Building CRVS - normal control room HVAC system CSDRS - certified seismic design response spectra CSDRS-HF - CSDRS - high frequency CWS - circulating water system DCD - Design Control Document EAB - exclusion area boundary 20 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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Abbreviations {cont'd)

EPRI - Electric Power Research Institute FSAR - Final Safety Analysis Report HMR - Hydrometeorological Report HVAC - heating ventilation and air conditioning LPZ - low population zone LWR - light water reactor MCR - main control room NOAA - National Oceanic and Atmospheric Administration RAI - request for additional information RG - Regulatory Guide 21 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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Abbreviations (cont'd)

RWB - Radioactive Waste Building RXB - Reactor Building SER - Safety Evaluation Report sews - site cooling water system TGB - Turbine Generator Building TSC - technical support center URD - Utility Requirements Document 22 PM-1218-63753 Revision: 0 Copyright 2018 by NuScale Power, LLC.

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