IEC 61069-1-2016 pdf download.Industrial-process measurement, control and automation – Evaluation of system properties for the purpose of system assessment – Part 1: Terminology and basic concepts.
This part of IEC 61 069 defines the terminology and outlines basic concepts in the assessment of a basic process control system (BPCS) and a basic discrete control system (BDCS). These two general system types cover the areas of discrete, batch and continuous applications. In
IEC 61 069 these two, BPCS and BDCS, together are referred to as “basic control system(s)”, (BCS).
The treatment of safety in IEC 61 069 is confined to hazards that can be present within the BCS itself.
Considerations of hazards that can be introduced by the process or equipment under control, of the BCS to be assessed, are excluded.
Where the BCS risk reduction is intended to be less than 1 0 (i.e. SIL < 1 , per IEC 61 508-4), then assessment comes under IEC 61 069.
A BCS with a safety integrity level (SIL) or performing any safety instrumented function (SIF) is not covered by IEC 61 069, where SIL is defined by IEC 61 508-4 and SIF is defined by IEC 61 51 1 -1 .
This part of IEC 61 069 is intended for the users and manufacturers of systems, and also for those who are responsible for carrying out assessments as an independent party.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 61 000-4-2, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement techniques – Electrostatic discharge immunity test
IEC 61 000-6-4:2006, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards – Emission standard for industrial environments
IEC 61 000-6-4:2006/AMD1 :201 0
IEC 61 508-4:201 0, Functional safety of electrical/electronic/programmable electronic safety- related systems – Part 4: Definitions and abbreviations (see http://www.iec.ch/functionalsafety)
IEC 61 51 1 -1 :2003, Functional safety – Safety instrumented systems for the process industry sector – Part 1: Framework, definitions, system, hardware and software requirements
3 Terms, definitions, abbreviated terms, acronyms, conventions and symbols
3.1 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1 .1 accuracy
closeness of agreement between the result of a measurement / output and the (conventional) true value of the quantity being measured / calculated
3.1 .2 assessment , <of a system>
process of judgement, based on evidence, suitability of a system, for a specific mission or class of missions
[SOURCE: ISO 1 551 3:2000, 3.3, modified – “competency against prescribed standards of performance” replaced with “, based on evidence, suitability of a system, for a specific mission or class of missions”]
3.1 .3 assessment activity
set of actions to evaluate one or more assessment items
3.1 .4 assessment authority
body that has legal powers and rights of assessment
[SOURCE: ISO/IEC Guide 2:2004, 4.5, modified – The term itself has been modified (addition of “assessment”) and addition of the words “of assessment” at the end of the definition]
3.1 .5 assessment item
set of a system property which is evaluated and an influencing factor which is considered for the evaluation
3.1 .6 assessment program
documented plan of coordinated set of assessment activities, not necessarily interdependent, that continue over a period of time and are designed to conduct the assessment.IEC 61069-1 pdf download.