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Working Group 1 - Terminology

Working Group 2 - Dependability Techniques

Working Group 3 - Dependability Management and Systems

Working Group 4 - Dependability Information Systems


Published Papers


Important Note


WG1 - Terminologys                                                                   News at Tokyo Japan, Oct 2017

WG1 met in Tokyo, Japan on October 18 and reviewed the status of IEC 60050 ‑ Part 192, Dependability, IEC 60050 ‑ Part 692, Electric power systems; dependability and quality of service, and IEC 61703, Mathematical expressions for reliability, availability, maintainability and maintenance support terms.

WG1 had received direction from the Ad-hoc Group meeting in Copenhagen in May 2017 to review and revise the definition of term, Dependability. In addition to the comments received from WG1 members on the WG1 convener's proposed revision of the definition of dependability, several inputs and comments had been received from WG1 members and other sources regarding the definition of terms in IEC 60050-192. WG1 spent considerable time at the meeting discussing and resolving the inputs and comments received. WG1 recommended that no change be made to the definition of the term, Dependability, although the notes may be revised to clarify the scope and the breadth of the definition. It was agreed that WG1 convener will prepare by February 2018 a "living document" compiling various terms on which comments / inputs have been received and the associated resolutions.

The standard IEC 61703 was published as an International Standard in August 2016.


WG2 - Dependability techniques                                                 News at Tokyo Japan, Oct 2017

WG2 have just had a successful meeting in Tokyo, Japan, between 16th and 20th October 2017

1.  WG2 have had the following standard published;

a)  IEC 61709   Electronic component reliability ‑ Reference conditions for failure rates and stress models for conversion.

2.  WG2 are currently working on the following documents:

a)  IEC 60300-3-5   Application guide ‑ Test Conditions and Statistical Test Principles.

b)  IEC 60812   Analysis techniques for system reliability - Procedure for failure mode and effects analysis (FMEA). There will be a CDV shortly.

c)  IEC 61163-2   Reliability stress screening - Part 2: Electronic components.

d)  IEC 60300-3-1  Dependability management ‑ Part 3-1: Application guide ‑ Analysis techniques for dependability ‑ Guide on methodology.

e)  IEC 61025 Ed. 2.0   Fault tree analysis (FTA).

f)  IEC 61123 Reliability testing ‑ Compliance test plans for success ratio.

g)  IEC 61124 Reliability testing ‑ Compliance tests for constant failure rate and constant failure intensity.

h)  IEC 62506   Methods for product accelerated testing.

i)  IEC 61014   Reliability Growth.

3.  WG2 are about to start work updating:

a)  IEC 61025 Ed. 2.0   Fault tree analysis (FTA)

b)  IEC 61123 Reliability testing ‑ Compliance test plans for success ratio

c)  IEC 61124 Reliability testing - Compliance tests for constant failure rate and constant failure intensity.

4.  WG2 are considering updating the following documents. If anyone has any comments on these please contact the convener.

a)  IEC 62308: Equipment reliability - Reliability assessment methods

b)  IEC 62502 1st Ed. Analysis techniques for dependability ‑ Event tree analysis (ETA)

c)  IEC 60605-4 Equipment reliability testing - Part 4: Statistical procedures for exponential distribution - Point estimates, confidence intervals, prediction intervals and tolerance intervals

d)  IEC 60605-6 Equipment reliability testing - Part 6: Tests for the validity and estimation of the constant failure rate and constant failure intensity

e)  IEC 61163-1  Reliability stress screening - Part 1: Repairable assemblies manufactured in lots

f)  IEC 61165  Application of Markov techniques

g)  IEC 61649   Weibull analysis

h)  IEC 61710   Power law model - Goodness-of-fit tests and estimation methods

i)  IEC 62506   Methods for product accelerated testing

j)  IEC 62551   Analysis techniques for dependability - Petri net techniques.

The next meeting of Working Group 2 will take place October 2017 but some project teams may meet during the RAMS conference in the spring.
Please contact the convener for full details.


WG 3 - Dependability management and systems                         News at Tokyo Japan, October 2017

The October meeting for WG 3 Dependability management and systems was held in Tokyo during the week of October 16th – 20th 2017. From the meeting, the following items of interest are:

1.   IEC 62960 Ed.1.0 Dependability Reviews during the life cycle. Comments that had been held over from the last meeting were discussed and a CD3 is to be produced with comments discussed at the next meeting.

2.   IEC 60400-3-4 Specification of dependability requirements. Following discussions on the structure of TC 56 standards as a whole, the scope of 60300-3-4 is to be expanded to include evaluation and measurement of dependability attributes. Work on the next CD is to continue by correspondence and a new draft CD will be considered at the next meeting in Canada and issued thereafter.

3.   ISO/IEC 31010 Risk management: Risk assessment techniques: A CDV is to be issued prior to the end of 2017.

4.   IEC62508 Human aspects of dependability : The project leader for this standard has resigned because of work commitments and a new project leader is being sought for this standard.

5.   IEC 60300-1 Dependability management work has commenced on the revision of this standard. The first Working draft will be discussed at the next meeting.

6.   IEC 60300-3-10, Maintainability 60300-3-14 Supportability. Revision of these standards has recommenced and the plan is for them to have a common structure with 60300-3-1 Reliability.



WG 4 - Dependability information systems                               News at Tokyo Japan October, 2017

1.   Thomas Young Olesen was appointed as a vice convener of WG4 at the plenary meeting of TC56.

2.   PT 4.8 discussed dispositions of comments to CDV of IEC 62853/Ed1 and decided proceed to AFDIS.

3.   It was decided that a technical Report on Systems Concepts and Dependability of Systems will be published, based on earlier draft of IEC 62853.

4.   It was agreed that WG4 will seek work on dependability of Internet of Things (IoT), systems of systems (SoS) and IT security. For that purpose, it will study work of ISO/IEC JTC 1/SC 27, ISO/IEC JTC 1/SC 7 and ISO/IEC JTC 1/SC 27.

5.   Next interim meeting is to be held 2018-04-23 ‑ 2018-04-27 in Waterloo University, Canada.


Published Papers

1.   Achieving dependability value for pipelines and facilities.                                                                                                           Click    HERE   to download this pdf file

2.  International Standards on Maintainability and Supportability and Their Application to the Nuclear Industry.                         Click    HERE   to download this pdf file

3.   The 6th Workshop on Open Systems Dependability (WOSD) took place in Tokyo, Japan during October 2017.           The website is available HERE
       Individual slides and papers can be accessed from the website. Individual papers are also listed below;
        a)   Assurance of open systems dependability: developing a framework for automotive security and safety
        b)   ISO 31010 Risk assessment techniques and open systems.
        c)   Developments in Dependability Standardization
        d)   Asset Management, Open Systems and the Role of Governance.
        e)   An overview of IEC 62853 Open systems dependability (CDV).
        f)   Short History of IEC TC56 from 1965 to 2017
        g)   Impact of open systems dependability on IoT and SoS.
        h)   Automated Integration of Potentially Hazardous Open Systems.
        i)   Open Systems Dependability and DEOS: Concept, Retrospect and Prospects


Important Note  

The views expressed in these papers are those of the authors and not necessarily those of IEC/TC 56 or the International Electrotechnical Commission.


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