GB/T 41142-2021Hardware design requirements of computer-based instrumentation and control systems important to safety for nuclear power plants (English PDF)

1 Scope

This document specifies the hardware design requirements for computer-based systems important to safety in nuclear power plants, including hardware requirements, design and development, verification

And confirmation, identification, manufacturing, installation and commissioning, operation, maintenance and other related content:

This document applies to the design of computer-based system hardware important to safety in nuclear power plants and the evaluation of pre-developed hardware (including firmware);

It is also applicable to the design process and design verification of programmable logic devices:

This document does not apply to computer hardware facilities used for software download and inspection:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document:

GB/T 12727 Appraisal of safety-grade electrical equipment for nuclear power plants

GB/T 13626 Single Fault Criterion Applied to Nuclear Power Plant Safety System

GB/T 36044 Code for Appraisal of Electrical Equipment Important to Safety in Nuclear Power Plants

NB/T:20026-2014 General requirements for instrumentation and control systems important to safety in nuclear power plants (IEC 61513:2011, MOD)

NB/T:20054 Computer software for performing Class A functions for instrumentation and control systems important to safety in nuclear power plants (NB/T:20054-2011,

IEC 60880:2006, MOD)

NB/T:20055 Computer software for instrumentation and control systems important to safety in nuclear power plants to perform Class B and Class C functions (NB/T:20055-

2011, IEC 62138:2004, MOD)

3 Terms and Definitions

The following terms and definitions apply to this document:

3:1 computer-basedsystem

Instrumentation and control (I system:

Note: Computer-based systems are equivalent to digital systems, software-based systems, and programmable systems:

[Source: NB/T:20026-2014, 3:11]

3:2 computer-basedsystemimportanttosafety

System safety functions are systems important to safety in nuclear power plants that are implemented through built-in computer systems:

[Source: HAD102/16-2004, Glossary Explanation]

3:3 firmware firmware

A combination of hardware devices and computer instructions and data residing in read-only software in the device:

GB/T 4079 | GB/T 13286 | NB/T 20149 | GB/T 43535 | GB/T 31364 | […]