Development of the ACR Control Centre

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Development of the ACR Control Centre
International Atomic Energy Agency Technical
Meeting on Integration of Analog and Digital
Instrumentation and Control Systems in Hybrid
Main Control Rooms at Nuclear Power Plants 29 Oct
2 Nov, 2007

• R. P. Leger, G. Raiskums
• Atomic Energy of Canada Limited
• Oct. 30, 2007

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Presentation Overview

• CANDU Control Centre Evolution
• ACR-1000 Control Centre Development
• Input factors
• Technical basis
• ACR-1000 Control Centre Design
• Summary

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1.0 CANDU Control Centre Evolution
CANDU6 Original
ACR-1000?
Darlington
CANDU6 Qinshan
CANDU9
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Qinshan Control Center Upgrades
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Qinshan Unit 1 Control Centre
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2.0 ACR-1000 Control Centre Development

• ACR-1000 Control Centre development influenced by
  two factors
• ACR-1000 Project goals
• Conformity with nuclear industry trends

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• ACR-1000 Project Goals
• Further enhanced safety
• Lower cost/better economics
• Enhanced operability and maintainability

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• Nuclear Industry Trends
• Business, Operational and Technology Trends
• Identified 23 trends, Key ones
• Recognition that monitoring and maintaining
  awareness is prime control room supervisory duty
• Increased application of digital instrumentation
  and automation to improve awareness of process
  and equipment conditions, and reduce human error
  and operator workload

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• Nuclear Industry Trends (cont)
• Replacement of operating panels containing
  dedicated instruments and controls with plant
  information and controls presented through
  computer display interfaces
• Integration of operating information from
  separate sources into single task-based
  presentations to simplify workload and
  decision-making, and reduce operating errors

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Technical Basis

• CC Design Standards
• IAEA NS-R-1 , IEC 60964/60965, NUREG-0696,
  NUREG-0700
• Human Factors Engineering Program
• CNSC G-276/278, IEEE 1023, NUREG 0711
• Close association with operating utility
  personnel
• Continuous feedback through systematic processes
• Experienced Operations and Maintenance staff are
  included as part of the design team
• Control Centre Mock-up and Validation with
  experienced operators
• Completed for CANDU9
• In progress for ACR-1000

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3.0 ACR-1000 Control Centre Design
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• Features of the Advanced Control Room
• Hardwired Backup for Safety Functions
• Seismic Qualification of Main Control Room and
  Secondary Control Area
• Improved Control Room Ergonomics
• Highly integrated Main Operator Console and Shift
  Interrogation Console
• Automated Safety System Testing and Startup
  Sequences
• Extensive use of Large Screen Displays (Soft Wall
  Displays)
• Soft Controls Computerized Procedures
• CANDU Alarm Message List System (CAMLS)
• Operational Support Applications and Resources

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ACR-1000 Main Control Room
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MOC Display Examples
PHYSICAL
FUNCTIONAL
PHYSICAL
FUNCTIONAL
SYSTEMS
GOALS
System Display
SYSTEMS
GOALS
Functional Display
MASS/ENERGY
MASS/ENERGY
FLOW
FLOW
SINK
SINK
FLOWPATH
FLOWPATH
SOURCE
SOURCE
User Defined Display
Control Tab
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Soft Wall Display Example
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Advanced Annunciation System
Problem Identification
Change of Program/Equipment Status
Current Fault Messages Listed by Priority
State Change Messages Listed by Time
Dedicated Central Displays
Supports Immediate Operator Response Needs
Scrollable Fault and Status Lists
Combined Time-based History
Alarm Sheets Reference, Procedures, ..
Alarm Search, Sort, Filter, Special
Configurations (Trip Parameters, )
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4.0 Summary

• ACR-1000 Control Centre builds on past CANDU
  success, with enhancements for
• safety
• Operability and maintainability
• Lower costs, better economics
• ACR-1000 CC is designed in accordance with
  current Control Centre and Human Factors design
  standards and regulatory requirements
• ACR-1000 CC design exploits
• Experience in plant operations to improve CC
  layout and workstation design
• Advanced display system technology
• Advanced alarm processing and display technology

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