This recommended practice provides a single source of component function identifiers that, along with related recommended practices concerning unique identification principles and definitions, implementation instructions, and system descriptions, makes up a concept, entitled the Energy Industry Identification System (EIIS), for uniquely identifying systems, structures, and components of nuclear and fossil-fueled power plant projects (electric power generating stations) and related facilities.… read more Hydro and other types of power plant projects are not included in this concept. read less