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



Reference EN 61508-3:2001
Title Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements
Project Number 4292
Abstract/Scope Applies to any software forming part of a safety-related system or used to develop a safety-related system within the scope of IEC 61508-1 and IEC 61508-2. Provides requirements: - for safety lifecycle phases and actvities; - for informatin relating to the software safety validation; - for the preparation of information and procedures concerning software; - to be met by the organisation carrying out modifications to safety-related software; - for supporting tools. Has the status of a basic safety publication in accordance with IEC Guide 104.


Current Stage code 6060
Current Stage code date 2001-12-21
Current Stage code deadline 2002-08-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/SC 65A
Reference Document IEC 61508-3:1998 (EQV) + corrigendum Apr. 1999 (EQV)
ICS 25.040.40 - Industrial process measurement and control
Keywords Safety; Functional safety; Software; Electronic; Programmable
Note Superseded by EN 61508-3:2010
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2001-12-21 2002-08-01 export to doc file  EN
5099 2001-07-03 2002-01-01  
5061 2001-04-20 2001-07-03  
5020 2000-09-29 2001-03-31  
3090 2000-07-04 2001-01-04  
3098 1996-03-05    
2020 1995-01-23 1995-07-31  
1000 1991-12-10 1992-06-10  

Implementation Dates

date of Ratification (DOR) (1) 2001-07-03
date of Availability (DAV) (2) 2001-12-21
date of Announcement (DOA) (3) 2002-02-01
date of Publication (DOP) (4) 2002-08-01
date of Withdrawal (DOW) (5) 2004-08-01


Superseded by EN 61508-3:2010
Normative reference (6) ISO/IEC Guide 51:1990
IEC Guide 104:1997
EN 61508-1:2001
EN 61508-2:2001
EN 61508-4:2001
EN 61508-5:2001
EN 61508-6:2001
EN 61508-7:2001

(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.