A safety critical component is a component were the failure during normal use, forseeable misuse and fault conditions is likely to result in a hazardous condition for the operator and/or service person (includes maintenance). Richard Woods Sensormatic Electronics
-----Original Message----- From: lcr...@tuvam.com [mailto:lcr...@tuvam.com] Sent: Tuesday, October 30, 2001 12:27 PM To: emc-p...@majordomo.ieee.org Subject: Definition for Safety Critical Component All, Does anyone have a concise definition of Safety Critical Component? I understand that the definition of this term is highly dependent on context, so let me frame it a bit.... I am interested in the components that may be in "high-tech" industrial equipment such as those used in the semiconductor manufacturing industry. And as for "regulatory space" I am considering the typical application of electrical design standards such as EN 60204, NFPA 79, ULK 508, EN 61010 as well as similar standards that may address the design of pneumatic, mechanical and process chemical delivery systems. I am also considering three potential populations. Operators - who interact with the tool only to get it to perform its intended function (this group can also include 'passers by' Maintenance personnel - who work with the tool to perform prescribed, well document procedures intended to keep the tool in good working order. Service personnel - who do anything necessary to get a broken tool back into operating condition. Thanks for any ideas. -Lauren Crane TUV America / TUV Product Service
