IEC 61069-6:1998 pdf download – lndustrial-process measurement and control -Evaluation of system properties for the purposeof system assessment- Part 6: Assessment of system operability

IEC 61069-6:1998 pdf download – lndustrial-process measurement and control -Evaluation of system properties for the purposeof system assessment- Part 6: Assessment of system operability.
This part of IEC 61069 covers the assessment of the operability of industrial process measurement and control systems.
The assessment methodology detailed in IEC 61069-2 is applied to obtain the operability assessment programme.
The subsidiary operability properties are analysed. and criteria to be taken into account when assessing operability is described.
References are made to different supplementary operability evaluation techniques.
2 NormatIve references
The following normative documents contain provisions which, through reference In this text, constitute provisions of this part of IEC 61069. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 61069 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards
IEC 61069-1:1991. Industrial-process measurement and control — Evaluation of system properties for the purpose of system assessment — Part 1: General considerations and methodology
IEC 610692:1993. IndustrIal-process measurement and control – Evaluation of system properties for the purpose of system assessment — Part 2: Assessment methodology
IEC 61069-3:1996. Industrial-process measurement and control — Evaluation of system properties for the purpose of system assessment — Part 3: Assessment of system functionality
IEC 61069-4:1997. Industrial-process measurement and control — Evaluation of system properties for the purpose of system assessment — Part 4: Assessment of system performance
IEC 61069-8,— lodustrial.process measurement and control — Evaluation of system propert,es for the purpose of system assessment — Part 8: Assessment of not task related properties’ I
ISO 9241-10:1996, Er-gonomic requirements for office work with visual display terminals (VDT5) — Part 10: Dialogue principles
3 Definitions
For the purpose of this part of IEC 61069 the following definitions apply:
3.1
operability
the extent to which the operating means provided by the system are efficient, intuitive. transparent and robust to accomplish the operators’ tasks
3.2
operator
the person (or persons) who use(s) the system to tultill the mission
NOTE – In tlu standard operator is used in a generic way and includes all persons who may perform any tasks to hetell the m.sSlOn.
3.3
efficiency
the extent to which the operating means provided by the system minimise operator time and effort required in using the system to accomplish his tasks within stated constraInts
3.4
intuitiveness
the extent to which the operating means provided by the system are immediately under. standable by the operators
3.5
transparency
the extent to which the operating means provided by the system apparently places the operator in direct contact with his tasks
3.6
robustness
the extent to which the system correctly interprets and responds to operator actions perlormed. using unambiguous methods and procedures, and removes ambiguities by providing appropriate feedback
4 OperabilIty properties
4.1 General
For a system to be operable it is necessary that it provides the operator throtigh its human- machine interface with a transparent and consistent window into the tasks to be perlormed. It shoi,iid have means for efficient, intuitive, transparant and robust interaction with these tasks. The extent to which this is the case can be expressed by the property operability.
The human-machine interface functions are part of the system and enable the operator to monitor and manipulate the system itself, the external systems and the process.
The requirements tar operability are strongly attected by the skill. knowhow and constitution ol the personnel operating the system.