Cover E DIN IEC 61226 VDE 0491-1:2015-08

E DIN IEC 61226 VDE 0491-1:2015-08

* German Language Version *

Nuclear power plants

Instrumentation, control and electrical systems important to safety – Categorization of functions and classification of systems

(IEC 45A/1018/CD:2015)
Class/Status: Draft, valid
Released: 2015-08   Published: 2015-07-24
VDE Art. No.: 1400149
End of objection deadline: 2015-09-24


The draft standard describes a method for classification of information and control functions and the systems and equipment related to those functions. The classification is according to the significancy of the functions to the safe operation of the power plant. The functions are assigned to Categories A, B, C or “not classified” depending on their contribution to the prevention and mitigation of postulated initiating events (PIE).