ME2120 PPZ AND PRT MODELING

UPDATE: 2/7/2011

Thomas L Meikle V

Presentation Outline

Introduction AP1000 Plant Configuration Component Configuration Modeling Elements

Westinghouse AP1000 Plant Layout

Reactor Coolant System (RCS) P&ID

Pressurizer (PPZ) P&ID

Pressurizer (PPZ) Configuration

PPZ Surge Line Configuration

Design Information (AP1000 DCD)

Design Information (AP1000 DCD)

Design Information (AP1000 DCD)

Simplified Model

Conservation of Energy

Equation 4-39, Nuclear Systems 1: Thermal Hydraulic Fundamentals

General Mass and Energy Equations

Pressurizer Relief Tank (PRT) Notes

Required Inputs and Outputs – Pressurizer (PPZ)

System Worksheet

Component: Pressurizer (PPZ)

Required Outputs System PressurePressurizer LevelTemperature (?)

Initial Conditions Initial pressureInitial pressurizer level

Required Inputs Surge line flow rate and enthalpySpray line flow rate and enthalpyRelief flow ratePressurizer heater power levelAmbient heat loss (?)Spray Valve PositionRelief Valve Position

Required Geometry Area as a function of height of the pressurizer

Pertinent Physics Conservation of mass and energyConcept of equilibrium conditionsDo we want to do non-equilibrium (?)

Viewable Signals System pressurePressurizer levelRelief valve positionsPORV positionsRelief flowSpray flowHeater power level (number of heaters "on")Spray valve position (?)

Open issues

Required Inputs and Outputs – Pressurizer Relief Tank (PRT)

System Worksheet

Component: Pressurizer Relief Tank (PRT)

Required Outputs Pressure (?)Level

Initial Conditions Initial pressure (?)Initial level

Required Inputs Relief flow rateRelief Valve Position

Required Geometry Area as a function of height

Pertinent Physics Conservation of mass

Viewable Signals Pressure (?)Level

Open issues