International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 61078:2006
Title Analysis techniques for dependability - Reliability block diagram and boolean methods
Project Number 16050
Abstract/Scope This International Standard describes procedures for modelling the dependability of a system and for using the model in order to calculate reliability and availability measures. The RBD modelling technique is intended to be applied primarily to systems without repair and where the order in which failures occur does not matter. For systems where the order of failures is to be taken into account or where repairs are to be carried out, other modelling techniques, such as Markov analysis, are more suitable.


Current Stage code 6060
Current Stage code date 2006-05-18
Current Stage code deadline 2006-12-01
Deadline date for vote  


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IEC Technical Body IEC/TC 56
Reference Document IEC 61078:2006 (EQV)
ICS 03.120.01 - Quality in general
03.120.99 - Other standards related to quality
Keywords Dependability; Reliability block diagram; Boolean
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2006-05-18 2006-12-01 export to doc file  EN  FR  DE
5099 2006-03-01 2006-05-01  
5061 2006-01-26 2006-03-01  
5060 2005-12-05 2005-12-19  
5020 2005-09-30 2005-12-02  
4099 2004-11-12 2004-11-30  
4020 2003-11-07 2004-04-09  
3099 2003-11-04 2003-11-07  

Implementation Dates

date of Ratification (DOR) (1) 2006-03-01
date of Availability (DAV) (2) 2006-05-18
date of Announcement (DOA) (3) 2006-06-01
date of Publication (DOP) (4) 2006-12-01
date of Withdrawal (DOW) (5) 2009-03-01


Supersedes EN 61078:1993
Superseded by  
Normative reference (6) ISO 3534-1:1993
IEC 60050-191:1990
HD 617 S1:1992

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.