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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?