نمونه متن انگلیسی مقاله
This chapter addresses the contents of the IEC 61511 in detail. Each Part from one to three is briefly covered. Some of the following documents are referred to as “second tier” guidance in relation to IEC 61508. Due to the open ended nature of the statements made, and to ambiguity of interpretation, it cannot be said that conformance with any one of them automatically infers compliance with IEC 61508. However, they cover much the same ground as each other albeit using slightly different terms to describe documents and life-cycle activities. IEC 61511 is intended as the process industry sector implementation of IEC 61508.
۸٫۱ IEC International Standard 61511: Functional Safety Instrumented Systems for the Process Industry Sector (Second Edition was published in 2016)
EC 61511 is intended as the process industry sector implementation of IEC 61508. It gives application specific guidance on the use of standard products for the use in “safety instrumented” systems using the proven-in-use justification. The guidance allows the use of field devices to be selected based on proven in use for application up to SIL 3 and for standard off-the-shelf PLCs for applications up to SIL 2. The first edition was issued at the beginning of 2003. Edition 2 was published during 2016 and this chapter has been updatedtoincludethe main changes from edition 1. Unfortunately part 1 which was published in February 2016 contained many editorial mistakes. Some of these editorial mistakes may lead the reader to misinterpret the technical requirements.