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Civil Structures and Civil Structures and Equipment ArrangementsEquipment Arrangements

Johan Slabber

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 2

Discussion TopicsDiscussion Topics

• Site Arrangement

• Reactor BuildingContainment System

Citadel

Conventional Island

• Auxiliary Buildings

• General Arrangements

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 3

Site BuildingsSite Buildings

Cooling Water

PlantroomCooling Towers

Transformer Bay

Administration Building

Module Building

Services Building

Ancillary Building

Reactor BuildingRPV

Citadel

PCUCitadel

Laydown

SPECIFICATION

Height total 65.3 mHeight above ground 42.8 mDepth below ground 22.5 mWidth 37 mTotal width (loading bayincluded) 46m

Length NI 67mLength NI (SSS additional) 74mLength CI 36mTotal length (CI included) 110m

Nuclear IslandConventional

Island

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 5

External LoadsExternal Loads

The following external loads are considered in the plant design:Wind LoadsTornado LoadsAtmospheric Temperature LoadsPrecipitation Loads (rainfall and snow)External Flood LoadsInternal Flood LoadsMissile LoadsAircraft Crash LoadsSeismic Loads (Safe Shutdown Earthquake [SSE] = 0.4 g Peak Ground Acceleration (PGA) horizontal and 0.27 g PGA vertical (under review for DPP))

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 6

Containment SystemContainment System

The Containment System is comprised of:Citadel

– Reactor Cavity

– PCU Citadel

Vented Confinement Building

Pressure Relief System

Specialized Doorways Subsystem

HVAC System Filtration

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 7

Containment System FunctionsContainment System Functions

Containment System functions include:Protection of reactor, spent fuel, and safety related SSCs from external loads and missilesProtection of the reactor, spent fuel, and safety related SSCs from high energy HPB breaks and other internal hazards (e.g. fires and floods)Mitigation of fission product releases via vented and filtered confinement approachLimit air ingress to the MPS following a HPB breachAdditional functions to support access, maintenance, personnel safety, and health physics

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 8

Confinement PhilosophyConfinement Philosophy

Confinement

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 9

Depressurization Routes

HICS

2x13m2 Shafts1

2

34

5

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 10

Vent Shaft LayoutVent Shaft Layout

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 11

Specialized DoorsSpecialized Doors

The functions of the Specialized Doors include:Facilitate access to reactor building areas

Support building confinement functions – Limit air ingress into the Citadel, post event, for HPB breaks

– Limit the release of fission products to atmosphere

Support zoning within reactor building – Fire

– Flood

– PRS pressure

– HVAC static pressure zones

– Radiation protection

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 12

Conventional Island (Generator House)Conventional Island (Generator House)

The Generator House performs the following primary functions:

Provides access to the generator during operation and maintenanceHouses the ancillary plant serving the generator, e.g. breaker, SFCHouses the generator transformer and unit transformer bussbarsHouses the two redundant trains of electrical systems interfacing with the Nuclear IslandHouses the two lube oil systems serving the turbine, compressors and generator in the controlled and non-controlled areas

February 28 – March 2, 2006 PBMR Safety and Design Familiarization© Copyright 2006 by PBMR (Pty) Ltd. 13

Auxiliary BuildingsAuxiliary Buildings

• Diesel Generator Building

• Diesel Fuel Building

• Lube Oil Storage Building

• Cooling Water (CW) Plant Room

• Fire Pump House

• Fire Protection System (FPS) Water Storage Tanks

Level –22.5m

HICS ICS C&I

Sump

FHSS Scrap Fuel Storage

CCS/CBCS BC

Open

ICS Tanks

Open

FHSS SFT M

aintenance

HoistHoist Lobby

FHSS D

ust Filter M

aintenance

FHSS SFT M

aintenance

HVAC

Lift LobbyLift

Stair

Emergency Stairs CBCS

Stair

HICS Valves

Open

CBCS

PRS Shute

PRS Shute

ACS Piping

FHSS Maintenance

Level –18.75m

HICS HPS LabFHSS lifting v-block

CCS/CBCS BC

Open

Open

HICS Valves

Open

FHSS Filter and StorageFHSS SFT (6),

UFT, GST

FHSS SFT (6), installed after 12y

Open

FHSS pipe servitude

CCS

Aux BC

Level –15.0m

HICS ICS Compressors (5)

Open

Open

FHSS AGS

FHSS pipe servitude

FHSS CUD

Open

Open

Hot Outlet Pipe

HICS DSRS Compressors (2)

HICS DSRS

HLW storage

Level –9.25m

HICS HPS Main

Open

Open

Waste Storage

FHSS pipe servitude

Special Tools

Open

HICS HPS C&I

Level –5.3m

HICS HPS Laydown

CCS/CBCS Power Panels

StairOpen

FHSS pipe servitude

Open

Open

HVAC Top Cavity HICS DSRSACS Pipes

Open

Pre-cooler

Inter-coolerLift AEPS Cable

Servitude PLICS Pipe Servitude

HICS ICS Filters (1&2)

Level +0.7m

HICS N2 Storage

FHSS Fresh Fuel

FHSS SFT Pipes

FHSS pipe servitude

Controlled Access

Open

PEMR HICS N inject

HICS Cryogenic

Open

PLICSRecuperators PEMR Power Supply

HICS HMS

Loading Bay (NI)

TGS Oil System (contaminated

TGS Oil System (un-contaminated

Busbars

Loading Bay (CI)

HICS HMS Compressor

FHSS SFT Relieve Valves

Level +5.2m

Open

FHSS pipe servitude

PEMR

HVAC

PCU Instrumentation

Loading Bay (NI)

Loading Bay Hatch

PCU Instrumentation

C&I Engineering room

Instu. Calibr

SFT Distribution

SFT Cooling

Generator Maintenance

Level +7.8/6.8m

Generator

Pre/Inter-cooler hatches

Compressor – St 1 & 2

Turbine Gearbox

PCU Laydown

PCU Laydown

Level +12.3m

FHSS Maintenance

FHSS pipe servitude

FHSS Workshop

Loading Bay CI HatchIAEA

HVAC Z2 Air intake

Decontamination

Count Room

LaydownBelow

Loading Bay NI Hatch

Open(2.7m)

LaydownBelow

Level +15.5m

FHSS Valve Blocks

FHSS pipe servitude

FHSS Maintenance

RCS ST

LaydownHatches

Decontamination

Open

Loading Bay NI Hatch

Open

Laydown

Laydown

Level +19.0m

HVAC Access

HVAC Z3 Intake

FHSS Valve Blocks

Open

Contaminated Laydown Area

Open

Open

LaydownPlatform

Level +24.5m

NS

RCCS Tank Pipes

FHSS Valve BlocksContaminated

Laydown Area RPS

BUMS RPS Cabling

WHS SW Storage

Level +29.0m

RU Laydown

RCCS Tanks

HVAC Z2

Exaust

RU Laydown

Level +33.5m

RCCS Tanks

HVAC Z3

Exaust