GB/T 41257-2022Functional safety requirements for digital factory (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

Introduction

Digital workshop is the core unit of intelligent manufacturing, involving a wide range of fields and complex and diverse types. Intelligent technology is bringing difficulties to the manufacturing industry In addition to the development opportunities, the manufacturing industry is also faced with security challenges. There are many risks in the digital workshop, and many security issues are faced.

Problems, such as. the operation failure of digital manufacturing equipment (including control function failure, safety function failure), may lead to the failure of the manufacturing system function control, product quality decline, etc., thereby causing harm to surrounding personnel, assets or the environment, causing huge economic losses and causing reputational damage. Influence.

The outline of "Made in China 2025" clearly proposes to establish an intelligent manufacturing security system. To reduce risks in the digital workshop, ensure In order to prevent the safe operation of the digital workshop, it is necessary to adopt functional safety technical means.

To meet the functional safety requirements of the workshop, set up protective layers (such as safety-related systems, physical protection systems, etc.) in the digital workshop to establish functional safety The management system guarantees the functional safety of the digital workshop from all angles.

According to GB/T 37393-2019 "General Technical Requirements for Digital Workshop", the digital workshop mainly covers the product manufacturing process, Its architecture is divided into base layer and execution layer. Therefore, the functional safety requirements for digital workshops in this document will also be limited to the base layer and the executive within the scope of the row layer.

The functional safety of the digital workshop mainly considers the following three aspects.

First, according to the identified hazards and risk analysis results in the digital workshop, combined with the tolerable risks of the industry or the enterprise itself, carry out insurance protection A protective layer assessment is carried out to determine the necessity of various protective measures and the required security protection functions. Set appropriate in the base layer of the digital workshop Protection layer (such as. safety-related systems, physical protection systems, etc.) risks to personnel and the environment. Especially in view of the characteristics of the digital workshop itself, focus on the manufacturing equipment or devices in the workshop after they are connected to each other.

The new risks that come, and the new mode of security protection brought about by the upgrade of digitization, networking and intelligence.

The second is to establish a functional safety management information system in the executive layer of the digital workshop to protect the safety risks and protection of the digital workshop.

Layers, safety-related systems, and other functional safety-related activities for data collection and analysis, visual management, and dynamic management and control.

The third is to build a functional safety cyber-physical system, through E/E/PE safety-related systems, other risk reduction measures and functional safety The organic integration and in-depth collaboration of the whole management information system, etc., realize the real-time perception, dynamic control and information of the functional safety of the digital workshop Serve. Functional safety cyber-physical systems, including.

---E/E/PE safety-related systems at the base layer (including safety detection, control and enforcement), other risk reduction measures and their detection units, security servers, security interfaces and communications;

--- The functional safety management information system of the executive layer and its safety data, services, etc.

A schematic diagram of the functional safety of the digital workshop is shown in Figure 1.

Figure 1 Schematic diagram of functional safety of digital workshop Processes and results of digitized workshop functional safety-related activities, collected, stored, recalled, processed in a computer-identifiable form And display, in order to achieve complete records, preservation and traceability, to meet the needs of digital workshop construction. Functional safety requirements for digital workshops

1 Scope

This document specifies the safety life cycle, functional safety management of the digital workshop, hazard and risk analysis of the digital workshop, digital vehicle Inter-protection layer evaluation, safety-related system requirements, functional safety management information system requirements, functional safety integration requirements, etc.

This document is applicable to guide the new construction, reconstruction and expansion of digital workshops.

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 20438.1 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements

GB/T 20438.2 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems Part 2: Electrical/Electronic/Programmable requirements for electronic safety-related systems

GB/T 20438.3 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems Part 3: Software Requirements

GB/T 20438.4 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems Part 4: Definitions and Abbreviations

GB/T 37393-2019 General technical requirements for digital workshops

GB/T 37413-2019 Digital Workshop Terms and Definitions

3 Terms, Definitions and Abbreviations