1 / 15

Control System Architecture for a Modern Nuclear Power Plant

2. Presentation Outline. Modern I

lali
Download Presentation

Control System Architecture for a Modern Nuclear Power Plant

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. Control System Architecture for a Modern Nuclear Power Plant Presented by: J. Harber P. Foster, A. Xing Atomic Energy of Canada Limited IAEA Tech Meeting, Beijing China Nov 3-6, 2008

    2. 2 Presentation Outline Modern I&C Design Concepts Safety Categorization of Functions I&C Platforms & System Architecture Summary

    3. 3 Modern I&C Design Concepts IEC Standards for development of Programmable Electronic Systems (PESs) Concepts of system development based on safety significance of the functions being provided by programmable devices IEC 61226, IEC 61513, IEC 62138, IEC 60880, (IEC 61508) Better understanding of human performance design Improved information presentation Alarm processing and prioritization Initial implementations in recent builds Increased emphasis on documenting the safety case for the design

    4. 4 Safety Categorization of Functions Based on principles of IEC 61226, safety functions in all systems are categorized and their importance to safety is identified Safety functions performed by each system are identified Safety functions are based on principles of IAEA NS-R-1 Probabilistic safety assessments provide design assist and ensure that safety goals are met by the design (along with deterministic analysis).

    5. 5 ACR-1000 I&C Design Features Safety Related systems across the station are divided into two functional groups Implementing 2 of 4 logic in ACR-1000 I&C where reliable signals are required Limited sharing of measurement signals as permitted by Canadian regulations

    6. 6 Distributed Control System for Monitoring and Control Functions Distributed Control System (DCS) consists of two subsystems Essential Control Subsystem (ECSS) Largely Category B functions Five safety systems are independent of the DCS Plant Control Subsystem (PCSS) Normal Process Control Functions Allocation of functions to DCS subsystems based on safety category

    7. 7 Operator Displays & Control Interface Systems Safety System Monitoring Computers (SSMC) Displays for Category A and B functions Plant Display System (PDS) Displays and control interface for Category C (and non-safety) functions

    8. 8 ACR-1000 I&C Platforms Trip computers used in two fully independent shutdown systems Combination of hardwired and qualified digital controllers used for Category A & B safety functions Distributed control system (DCS) used for monitoring and control functions Safety System Monitoring Computers & Plant Display System used for monitoring & operator interface functions

    9. 9 Category A and B Functions

    10. 10 Category C and Non-safety

    11. 11 Overview of the Instrumentation and Control Systems of the ACR-1000

    12. 12 Overview of ACR-1000 Monitoring and Control Platforms

    13. 13 Field Control Equipment Rooms Distribution of monitoring and control functions

    14. 14 Summary Categorization of functions Supports I&C system development, operator interface design, and Probabilistic Safety Assessment (PSA) studies Enhanced monitoring and control systems I&C system development in accordance with safety significance Improved operator interface & maintenance diagnostics Safety System Monitoring Computers Plant Display System Improved documentation to develop monitoring and control functions

    15. 15

More Related