Publication details
| Publication CODE |
Title |
| NBN EN IEC 62138:2019 (2019-09) |
NUCLEAR POWER PLANTS - INSTRUMENTATION AND CONTROL SYSTEMS IMPORTANT TO SAFETY - SOFTWARE ASPECTS FOR COMPUTER-BASED SYSTEMS PERFORMING CATEGORY B OR C FUNCTIONS |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
25.00 €
|
3. |
Description
This document specifies requirements for the software of computer-based instrumentation and
control (I&C) systems performing functions of safety category B or C as defined by
IEC 61226. It complements IEC 60880 which provides requirements for the software of
computer-based I&C systems performing functions of safety category A.
It is consistent with, and complementary to, IEC 61513. Activities that are mainly system level
activities (for example, integration, validation and installation) are not addressed exhaustively
by this document: requirements that are not specific to software are deferred to IEC 61513.
The link between functions categories and system classes is given in IEC 61513. Since a
given safety-classified I&C system may perform functions of different safety categories and
even non safety-classified functions, the requirements of this document are attached to the
safety class of the I&C system (class 2 or class 3).
This document is not intended to be used as a general-purpose software engineering guide. It
applies to the software of I&C systems of safety classes 2 or 3 for new nuclear power plants
as well as to I&C upgrading or back-fitting of existing plants.
For existing plants, only a subset of requirements is applicable and this subset has to be
identified at the beginning of any project.
The purpose of the guidance provided by this document is to reduce, as far as possible, the
potential for latent software faults to cause system failures, either due to single software
failures or multiple software failures (i.e. Common Cause Failures due to software).
This document does not explicitly address how to protect software against those threats
arising from malicious attacks, i.e. cybersecurity, for computer-based systems. IEC 62645
provides requirements for security programmes for computer-based systems.
|
| Class |
C
|
Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally
only available in English or French. Only the cover page is translated
and the document itself is in English or in French.
Very important notice: 98% of the text of the NBN EN 55XXX,
NBN EN 6XXXX comes from the IEC text which is NOT included.
This text can be ordered here:
IEC 62138:2018.
For the series NBN EN 50XXX, the standards are however complete.
|
DE version
|
EN version
|
FR version
|
|
Status
| Status |
Registered trilingual Belgian standard EN or FR or DE |
| Situation |
Currently active
Replaces
NBN EN 62138:2009
|
|
Origin
| Committee |
TC 45/SC 45A
REACTOR INSTRUMENTATION
|
| Responsible |
Ir DELENS Marc
|
Approval
| BEC Approval |
2019-09-09 |
| NBN Approval |
2019-10-23 |
| ICS-Code (International Standards Classification) |
27.120.20
|
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2019-09-09 |
| Date of availability (d.a.v.) |
2019-09-27 |
| Date of announcement (d.o.a.) |
2020-03-09 |
| Date of publication (d.o.p.) |
2020-09-09 |
| Date of withdrawal former edition (d.o.w.) |
2022-09-09 |
|
Correspondences with international standards
| Relation |
International standard |
Date |
| is identical to |
EN IEC 62138:2019
|
2019-09-27 |
| is identical to |
IEC 62138:2018
|
2018-07-31 |
Relations to belgian/foreign publications
| Type |
Origin |
Code |
Date |
| Standard |
Belgium |
EN 61226 |
|
| Standard |
Foreign |
IEC 62671:2013 |
|
| Standard |
Belgium |
NBN EN 60880:2009 |
|
| Standard |
Belgium |
NBN EN 61513:2013 |
|
|
