Safety > Standards

Proven in prior use: a DIY challenge

18 May, 2008 by Dr Eric Scharpf, CFSE, and Dr William Goble, CFSE*

Australian and international safety standards permit users to apply a ‘proven in prior use’ methodology to justify their safety integrity level (SIL)-rated safety instrumented system (SIS) equipment. But, before you choose that option, be sure you can accept the responsibility and you have the proper tools and procedures.

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