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BSI PD IEC TR 63164-2:2020

BSI PD IEC TR 63164-2:2020

$142.49

Reliability of industrial automation devices and systems – System reliability

Published By Publication Date Number of Pages
BSI 2020 24
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This part of IEC 63164 provides guidance on the calculation of reliability data of automation systems which can be simplified as series, parallel or mixed structure based on reliability data of single devices and/or sub-systems, and on the form to present the data.

NOTE This procedure is only targeted to the reliability of automation systems, but not systems that embed automation systems, e.g. process plant.

Reliability is included in dependability, and this document is mainly focused on random hardware failures that affect reliability. Dependability is used as a collective term for the time- related quality characteristics of an item and additionally includes availability, recoverability, maintainability, maintenance support performance, and, in some cases, other characteristics such as durability, safety and security, which are all not in the scope of this Technical Report.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
5 FOREWORD
7 INTRODUCTION
8 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
11 3.2 Abbreviated terms
4 System reliability
5 Calculation of system reliability
5.1 General
12 5.2 Form to present reliability data
5.3 Structures and calculations
5.3.1 Basic formulas
13 5.3.2 Series structures
Figures
Figure 1 – Series reliability block diagram
14 5.3.3 Parallel structures
Figure 2 – Parallel reliability block diagram
15 5.3.4 Mixed structures
Figure 3 – General series-parallel (redundancy) reliability block diagram
Figure 4 – Reduce the mixed structure
16 5.3.5 Summary
Table 1 – Summary of common formulas related to system reliability
17 Annex A (informative) Examples of typical automation systems
A.1 General
A.2 Example for series structure of process automation system
Figure A.1 – A typical process automation system (aluminum smelting)
18 A.3 Example for mixed structure of process automation sub-system
Figure A.2 – Block diagram for aluminum smelting automation system
Figure A.3 – Settling and washing process for aluminum smelting automation system
19 Figure A.4 – Block diagram for settling and washing process
20 Annex B (informative)Methods to improve the system reliability
B.1 General
B.2 Methods to reduce systematic failure
B.2.1 General
B.2.2 Measures to avoid systematic failure
B.2.3 Measures to control systematic failure
21 B.3 Method of reducing random hardware failure
B.3.1 Fault-tolerant design
B.3.2 Error avoidance design
B.3.3 System derating design
23 Bibliography

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BSI PD IEC TR 63164-2:2020
$142.49