Browse > Article
http://dx.doi.org/10.5516/NET.02.2013.526

FAULT-TOLERANT DESIGN FOR ADVANCED DIVERSE PROTECTION SYSTEM  

Oh, Yang Gyun (KEPCO Engineering & Construction Company, Inc.)
Jeong, Kin Kwon (KEPCO Engineering & Construction Company, Inc.)
Lee, Chang Jae (KEPCO Engineering & Construction Company, Inc.)
Lee, Yoon Hee (KEPCO Engineering & Construction Company, Inc.)
Baek, Seung Min (KEPCO Engineering & Construction Company, Inc.)
Lee, Sang Jeong (Chungnam National University)
Publication Information
Nuclear Engineering and Technology / v.45, no.6, 2013 , pp. 795-802 More about this Journal
Abstract
For the improvement of APR1400 Diverse Protection System (DPS) design, the Advanced DPS (ADPS) has recently been developed to enhance the fault tolerance capability of the system. Major fault masking features of the ADPS compared with the APR1400 DPS are the changes to the channel configuration and reactor trip actuation equipment. To minimize the fault occurrences within the ADPS, and to mitigate the consequences of common-cause failures (CCF) within the safety I&C systems, several fault avoidance design features have been applied in the ADPS. The fault avoidance design features include the changes to the system software classification, communication methods, equipment platform, MMI equipment, etc. In addition, the fault detection, location, containment, and recovery processes have been incorporated in the ADPS design. Therefore, it is expected that the ADPS can provide an enhanced fault tolerance capability against the possible faults within the system and its input/output equipment, and the CCF of safety systems.
Keywords
Fault-Tolerant Design; Advanced Diverse Protection System; Common-Cause Failures;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 U.S.NRC Official Transcript of Proceedings, "ACRS US EPR Subcommittee," Nov. 15, 2011.
2 IEEE Std 603-2009, "IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations," 5 November 2009.
3 U.S. NRC Reg. Guide 5.71, "Cyber Security for Nuclear Facilities," Jan. 2010.
4 Barry W. Johnson, "Design and Analysis of Fault-Tolerant Digital Systems," Page 2, Addison-Wesley Publishing Company, June 1989.
5 U.S. NRC, SECY 93-087, "Policy, Technical, and Licensing Issues Pertaining to Evolutionary and ALWR Designs," July 21, 1993.
6 Ricky W. Butler, "A Primer on Architectural Level Fault Tolerance," NASA/TM-2008-215108, Feb. 2008.
7 KHNP, "Preliminary Safety Analysis Report for SUN 1&2," Section 7.8.2.1.
8 10 CFR 50.62, "Requirements for reduction of risk from ATWS events for light-water-cooled nuclear power plants," August 28, 2007.
9 Y. G. Oh, Y. M. Kim, H. S. Yim, S. J. Lee, "Reliability Enhancement of APR+ Diverse Protection System regarding CCF," Proceedings of ICAPP '12, Chicago, USA, June 24-28, 2012.
10 IEEE Std 379-2000, "IEEE Standard Application of the Single-Failure Criterion to Nuclear Power Generating Station Safety Systems," 21, Sep. 2000.
11 IAEA NP-T-1.5, "Protecting against Common Cause Failures in Digital I&C Systems of Nuclear Power Plants," IAEA, Vienna, 2009.
12 NUREG-0800, BTP 7-19, "Guidance for Evaluation of Diversity and Defense-in-Depth in Digital Computer-Based I&C Systems," Rev. 6, July 2012.
13 Jong Gyun Choi, et al., "Fault Detection Coverage Quantification of Automatic Test Functions of Digital I&C System in NPPs," Nuclear Engineering and Technology, Vol.44, No.4, May 2012.
14 NUREG-0800, 7.8, "Diverse Instrumentation and Control Systems," Rev. 5, March 2007.
15 Y. G. Oh, et al., "Design Improvements of Diverse Protection System Regarding CCF and D3 Issues," Transactions of the KNS Autumn Meeting, Gyeongju, Korea, October 25- 26, 2012.
16 U.S. NRC Official Transcript of Proceedings, "Advisory Committee on Reactor Safeguards, US-APWR Subcommittee: Open Session," Nov. 4, 2008.