Committee Work Products
The ISA99 Committee has developed a simple plan or roadmap that identifies and defines the primary work products (standards, technical reports, etc.). This roadmap is summarized in the following figure.
Each of the elements of the work plan has three separate numerical designations. Originally all work products of the committee were numbered in the series ISA-99.xx.yy, and this terminology is still in common use. More recently there was a decision tomore closely align the ISA efforts with those of the corresponding IEC Technical Committee 65, Working Group 10 which is responsible for delivering a series of international standards designated as IEC 62443-x-y. As part of the plan to harmonize the numbering of ISA and IEC standards the ISA work products are being renumbered from ISA-99.xx.yy to ISA-62443.xx.yy. The new numbers will appear as each document is released or re-released.
Common Content
For continuity purposes all work products in the series include a common Preface and Foreword.
Work Products List
More detailed information about the various work products, including their present development status, work group assignment and relationship to equivalent IEC documents is provided in the following table.