skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Abnormal condition and events analysis for instrumentation and control systems. Volume 2: Survey and evaluation of industry practices. Final report

Technical Report ·
OSTI ID:383663

The ACES Project was initiated to identify a cost-effective methodology for addressing abnormal conditions and events (ACES) in digital upgrades to nuclear power plant systems, as introduced by IEEE Standard 7-4.3.2-1993. Several methodologies and techniques currently in use in the defense, aerospace, and other communities for the assurance of digital safety systems were surveyed, and although several were shown to possess desirable qualities, none sufficiently met the needs of the nuclear power industry. This report describes a tailorable methodology for performing ACES analysis that is based on the more desirable aspects of the reviewed methodologies and techniques. The methodology is applicable to both safety- and non-safety-grade systems, addresses hardware, software, and system-level concerns, and can be applied in either a lifecycle or post-design timeframe. Employing this methodology for safety systems should facilitate the digital upgrade licensing process.

Research Organization:
Electric Power Research Inst. (EPRI), Palo Alto, CA (United States); TRW, Inc., Fairfax, VA (United States)
Sponsoring Organization:
Electric Power Research Inst., Palo Alto, CA (United States)
OSTI ID:
383663
Report Number(s):
EPRI-TR-104595-V2; TRN: 96:025668
Resource Relation:
Other Information: PBD: Jan 1996
Country of Publication:
United States
Language:
English