BS EN 61227:2016

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Design principles
5 Design requirements
Annex A (informative) - Examples for the arrangement of
        discrete controls
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

Describes the Human-MachineInterface (HMI)requirementsfor discrete controls, multiplexed conventional systems, and soft control systems.

This International Standard supplements IEC 60964 which applies to the design for control rooms of nuclear power plants. It identifies the Human-Machine Interface (HMI) requirements for discrete controls, multiplexed conventional systems, and soft control systems. For the main control room of a nuclear power plant, IEC 60964 includes general requirements for layout, user needs and verification and validation methods, and these aspects are not repeated in this standard. However, IEC 61772 on Visual Displays Unit (VDU) also provides some guidance on displays and indications where necessary for the correct application of the control requirements.

This standard is intended for application to the design of new main control rooms in nuclear power plants designed to IEC 60964 where this is initiated after the publication of this standard. If it is desired to apply it to supplementary control points or local control positions, or to existing control rooms or designs, special caution shall be exercised as it makes assumptions such as the automation level that may not apply.