Title :
Evaluation of operative reliability of safety-related part of control system of machine and safety level
Author :
Fukuda, Takabumi ; Hirayama, Makoto ; Kasai, Naoya ; Sekine, Kazuyoshi
Author_Institution :
Nagaoka Univ. of Technol., Niigata
Abstract :
This paper concerns the evaluation of SRSC (safety related control system) from the point of operational reliability. The related standard is revised in 2006 and the new standard introduces PL (performance level) to evaluate the SRCS and shows procedure to determine the PL. To examine the procedure in practical point of view, PLs for 5 typical circuits is estimated by the procedure and event tree analysis and the results are compared with each other. From this study, some issues are pointed out.
Keywords :
electrical safety; machine control; machine control system; safety level; safety related control system; safety-related reliability; Circuits; Control systems; IEC standards; ISO standards; Machinery; Performance analysis; Protection; Reliability engineering; Risk management; Safety devices; IEC 62061; ISO 13849; Keywords; Performance Level; Reliability; Safety Function; Safety-Related Control System;
Conference_Titel :
SICE, 2007 Annual Conference
Conference_Location :
Takamatsu
Print_ISBN :
978-4-907764-27-2
Electronic_ISBN :
978-4-907764-27-2
DOI :
10.1109/SICE.2007.4421406
