DIN EN 61772:2013-09

This standard supplements DIN IEC 60964 (VDE 0491-5-1) to include design requirements for the application of visual display units in main control rooms of nuclear power plants. It supports the design of visual display unit applications (including displays on individual workstations and larger displays for group-working or distant viewing) together with or instead of conventional panel displays by: - stating principles to take advantage of visual display unit capability; - giving examples of good practice and guiding the designer to avoid deficiencies of design. The standard contains: a) Requirements for information needs - according to information goals, for example operation, maintenance, protection; - allowing for the necessary amount of space, for example location, arrangement; - using a hierarchy and/or relationships; - avoiding unnecessary information; - ensuring that information is relevant. b) Requirements for good presentation such as - clear and flicker-free display with suitable updating frequency; - enough display space and an optimal arrangement; - adequate format and symbol sizes; - pictorial, symbolic display in addition to alpha-numeric capacity; - standardized, common symbols and names; - arrangements oriented to human factor needs, for example population stereotypes; - use of grouping and coding methods; - use of consistent flow directions; - appropriate abstraction levels according to the needs of the different presumed users. c) Methods for easy and quick access to the specific information of current interest - by simple selection of single formats or format-sets according to information goals; - by using different kinds of menus (icons of neighbouring information) or other access techniques (last display, selection on screen, etcetera) by soft keys on or off the visual display unit screens or cursors; - by using programmed presentation (triggered by any binary signal, such as an alarm). d) Design criteria to obtain appropriate reliability of all functions necessary to achieve the specified information goals. If it is to be applied to existing control rooms or control areas designs, care should be taken as some assumptions made in this standard (such as automation level) may not apply. Where a deviation from this standard is necessary in a back-fitting application the reasons should be documented. The responsible committee is DKE/UK 967.1 "Leittechnik für kerntechnische Anlagen" ("Instrumentation and control of nuclear facilities") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.