ICONE20POWER2012-54352 Developing a Thermal Performance Monitoring System Specification for a Nuclear Power Plant – A Case Study

Introduction – Need for Thermal Performance Monitoring (TPM), IAEA & ASME Initiatives Thermal Performance Monitoring

System (TPMS) Specification for A Case Study – Goals, Overall & Technical Requirements, Performance Parameters for Monitoring, Combining Off-Line & On-Line Features Conclusions

Objectives

Competition Resource Constraints Need to Maximize Generation &

Value of Generating Plant Assets International Atomic Energy

Association (IAEA) & American Society of Mechanical Engineers (ASME) Initiatives

Introduction – Why Need TPM?

Two Reports Issued in 2008 – On-Line Monitoring (OLM) for Improving Performance of Nuclear Power Plants

Part 1: Instrument Channel Monitoring – Application of OLM for Verifying Calibration and Response Time of Process Instruments

Part 2: Process and Component Condition and Monitoring – Application of OLM and Modeling Technologies to Equipment and Process Condition Monitoring

IAEA Initiatives

General Goal of TPM – Maximize Generation and Minimize Production Costs Consistent with Safe Operation

May be Met through Fault Detection, Cost Effective Predictive Maintenance & Optimizing Target Values of Plant Parameters

Need to Use OLM Data – Often Not Trended or Used for Predictive Maintenance

IAEA Initiatives (Contd.)

ASME PTC PM-2010 Performance Monitoring Guidelines for Power Plants

Key Benefits of Performance Monitoring Maximizing Capacity Increasing Availability, Reliability, Safety Lowering Production Costs by Effectively

Responding to Data Trended and Collected

ASME Initiatives

Key Benefits of Performance Monitoring (Contd.) Avoiding Premature Equipment Degradation

or Plant Shutdown through Early Detection of Off-Normal Conditions Optimizing Operation, Maintenance Activities

and Overhaul Schedules for Components Ensuring Plant is Operated Safely Determining Contribution of Various

Components to Total Unit Performance

ASME Initiatives (Contd.)

Two, Identical Units Each Rated for Gross Electrical Output of 706 MWe Unit 1 Commercial Operation 1996 Unit 2 Commercial Operation 2007 Develop TPMS Specification for

Implementation at Both Units to Improve Efficiency

Case Study – 700 MW PHWR Nuclear Power Plant

Case Study – BOP Cycle

Actual Gross/Net Heat Rates and Electrical Output

Best Achievable Gross and Net Heat Rate and Electrical Output with Adjustments for Seasonal and Other Effects

Determine, Diagnose and Prioritize Potential Causes of Component Degradation or Lost Electrical Output

TPMS Goals

Monitor/Trend Key Parameters for Indication of Degradation that Can Result in Lost Electrical Output and Increased Heat Rate

Evaluate/Trend Thermal Performance of Important Turbine Cycle Components

Interface with Existing Plant Data Acquisition System (DAS)

Post-Processing and Exporting/Archiving Data in a Microsoft Windows Platform

TPMS Goals (Contd.)

Capability for Multiple Network Users to View TPMS Screens

Main Users to Include: Responsible Thermal Performance Engineer, Responsible System Engineers for BOP, Reactor Physics Group, Control Room Operator and TPM Computer Group

Accommodate Additional Users, as Necessary

Different Roles and Rights for Users – Viewing, Making Changes or Modifications to Display Screens, etc

Overall TPMS Requirements

Custom Display Builder and Automatic Report Generator for Selected Configuration

Trend/Analyze Data, Perform Calculations, Conduct What-if Analysis Using Existing Plant Instrumentation and Design Data, On-Line and Off-Line

Calculate/Validate Thermal Power Calculations Using Different Plant Models, On-Line and Off-Line

Overall TPMS Requirements (Contd.)

Data Storage/Retrieval

Work with Several Plant Conditions to Permit Comparisons/Validate Data

Calculate Expected Delivered Gross Electrical Output Based on the Reactor Thermal Power and Ambient Conditions

Permit Remote Performance Monitoring

Accommodate Additional Instrumentation/Plant Modifications

Overall TPMS Requirements (Contd.)

Completely Configurable through TPMS User Interface without Need for Source Code Customization

Reside in a Thermal Performance Server (TPS) to be Integrated with the SCADA

TPS to Provide Data Acquisition, Automatic Calculations, Data Storage and Web Server Functions

Overall TPMS Requirements (Contd.)

Capability to Directly Connect Thermal Performance Engineering Workstations to TPS for Computations, Trending, Comparisons, Generating Reports and Performing System Maintenance

Ability to Store its Configuration in a Relational Database and Allow All Data Points, Trending/Historic Displays to be Easily Configured and Editable through Menus and Data Entry Forms

Overall TPMS Requirements (Contd.)

Detailed Thermodynamic Model of BOP Cycle Using Existing Remote Instrumentation

Tabular Listing Display of Various Performance Parameters for Overall Cycle/Major Components with Capability to Indicate Graphically Deviation of Each from Defined Reference Conditions

Calculations of Thermal Power, Net Generation, Gross/Net Heat Rates and Costs Associated with Operating Off-Target as well as Off-Design

General Technical Requirements

Two Sets of Independent Reference Conditions for Comparison (Operating Target and Design)

Operating Target to Represent Best Achievable Reference Based on Current Ambient, Operating and Equipment Conditions

Design Reference to Represent Design Performance at Current Ambient and Operating Conditions

General Technical Requirements (Contd.)

Displays Showing Reconciliation of Heat Rate and Output Losses for Major Components

Capability to Edit Reference Conditions using Dialog Boxes and Menus without the Need to Access Source Code

Capability to Add, Replace or Modify the Displayed Performance Parameters

General Technical Requirements (Contd.)

Performance Parameters For Remote Monitoring

TPMS On-Line & Off-Line Capabilities

Monitoring/Calculating/Displaying Parameters for TPMS Components

Based upon TPMS Specification Developed for Case Study, Plant Intends to Implement TPMS in Two Phases

First Phase of TPMS Implementation will Have Off-Line Capabilities

Second Phase of TPMS Implementation will Add On-Line Capabilities

Conclusions

Questions?