DIFFERENCES BETWEEN IEC 61511ANB ISA 84

摘要

The ISA SP84 committee has expressed its desire to migrate from ANSI/ISA 84.01-1996 (ISA 84) to the international standard IEC 61511, when it is approved and published. This migration may take a number of forms, including the following: rewrite ISA 84 to conform with IEC 61511, modify IEC 61511 to reflect US specific issues and replace ISA 84 with the modified contents, or directly replace ISA 84 with IEC 61511. No matter which migration path is chosen, the requirements of IEC 61511 will soon affect the design, implementation, operation and maintenance of SIS in the United States.