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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 - Terminology                                                 News at Sydney Australia, Nov 2016

WG1 (including MT10 and PT12) held its recent meetings in Sydney, Australia, on October 31 and November 1, 2016. WG1 has been working on the following standards for the last few years.

1.  IEC 61703 -Mathematical expressions for reliability, availability, maintainability and maintenance support terms
2.  IEC 60050 – Part 192, International Electrotechnical Vocabulary – Part 192: Dependability
3.  IEV 60050 – Part 692, International Electrotechnical Vocabulary - Part 692: Electric power systems; dependability and quality of service

The status of the above standards, as noted at the Sydney meeting, is as follows:

IEC 61703 was issued as an International Standard in August 2016.

IEC 60050- Part 192 was issued as an International Standard in 2015. Information regarding any changes / additions / corrections required to the standard is being collected now. A few changes required have already been identified.

IEC 60050- Part 692, after disposition of the comments on its CDV version, has been submitted to IEC / TC 1 for issue as FDIS. Clarifications sought by IEC / TC 1 to ensure harmonization with other terminology standards are currently being provided to ensure timely issue of the FDIS for NC comments.


WG2 - Dependability techniques                                                 News at Sydney Australia, Nov 2016

WG2 have just had a successful meeting in Sydney, Australia, between 31st October and 4th November 2016.

1.  WG2 have had the following standard published;

a)  IEC 61078 - Analysis techniques for dependability - Reliability block diagram and Boolean methods

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. A CD2 will be produced shortly.

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

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 Copenhagen, Denmark, May 2017

The May meeting for WG 3 Dependability management and systems was held in Horsholm during the week of May 14 -19 2017. From the meeting, the following items of interest are:

1.   IEC 62960 Ed.1.0 Dependability Reviews during the life cycle. Comments were discussed and a CD3 is to be produced

2.   IEC 62402 Obsolescence management Comments on CD1 were discussed and a CD2 is to be prepared

3.   IEC 60400-3-4 Specification of dependability requirements Following discussions on the structure of TC 56 standards 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 will be considered at the next meeting in Japan and issued thereafter

4.   ISO/IEC 31010 Risk management: Risk assessment techniques: A joint ISO/IEC working group JWG 16 was held. Comments on CD3 were resolved and the document will proceed to CDV which is expected to be issued by the end of 2017 so comments can be reviewed in the spring 2018 meeting

5.   IEC62508 Human aspects of dependability : a new project leader is being sought for this standard



WG 4 - Dependability information systems                               News at Sydney Australia, Nov 2016

   WG4 recommended to reconfirm EC 61907 Ed. 1.0 Communication network dependability engineering and set the new stability date to be five years later (2021) at TC56 plenary meeting.

2.   WG4 meeting was held on 3 November, 2016 in Sydney, in conjunction with TC56 plenary meeting.

3.   At the Sydney meeting, WG4 approved IEC 62853/Ed.1: Open systems dependability to proceed to proceed to CDV (ACDV). The CDV is to be circulated in February 2017

4.   Future of WG4 is discussed during the Sydney meeting based on the discussion of ad hoc meeting of TC56 held on 2 November, 2016.


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


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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