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



Reference EN 61226:2010
Title Nuclear power plants - Instrumentation and control important to safety - Classification of instrumentation and control functions
Project Number 22243
Abstract/Scope IEC 61226:2009 establishes a method of classification of the information and command functions for nuclear power plants, and the instrumentation and control systems and equipment that provide those functions, into categories that designate the importance to safety of the function. The resulting classification then determines relevant design criteria. Is applicable to all the information and command functions and the instrumentation and control systems and equipment that provide those functions. The main changes with respect to the previous edition are listed below: - to introduce a definition for 'non-hazardous stable state'; - to clarify limits of categories; - to clarify requirements related to equipment used for beyond design events.


Current Stage code 6060
Current Stage code date 2010-03-12
Current Stage code deadline 2011-03-01
Deadline date for vote 2010-12-03


Order Voucher  


IEC Technical Body IEC/SC 45A
Reference Document IEC 61226:2009 (EQV)
ICS 27.120.20 - Nuclear power plants. Safety
Keywords Nuclear; Power plant; Instrumentation; Safety
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2010-03-12 2011-03-01 export to doc file  EN  FR  DE
5099 2010-03-01 2010-07-01  
5060 2010-02-15 2010-03-01 export to doc file  EN
5020 2009-12-11 2010-02-12 export to doc file  EN
1599 2009-12-01 2010-01-01  
1561 2009-10-28 2009-12-01  
1560 2009-10-20 2009-11-03 export to doc file  EN
1520 2009-07-17 2009-10-16 export to doc file  EN
1099 2009-04-01 2009-08-31  
1000 2008-12-03 2009-03-31  

Implementation Dates

date of Ratification (DOR) (1) 2010-03-01
date of Availability (DAV) (2) 2010-03-12
date of Announcement (DOA) (3) 2010-09-01
date of Publication (DOP) (4) 2011-03-01
date of Withdrawal (DOW) (5) 2013-03-01


Superseded by  
Normative reference (6) IAEA guide NS-G-1.3
EN 60671
EN 60709:2010
IEC 60780:1998
EN 60812:2006
EN 60880
EN 60964:2010
EN 60965:2011
IEC 60980:1989
EN 60987:2009
EN 61000 series
EN 61000-6-2:2005
corr. September 2005
IEC 61513
IEC 61771:1995
EN 61772:2013
IEC 61839:2000
EN 62138:2009

(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.