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Safety specification for magnesium and magnesium alloys smelting
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Basic data
| Standard ID | GB 29742-2026 (GB29742-2026) |
| Description (Translated English) | Safety specification for magnesium and magnesium alloys smelting |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | H09 |
| Classification of International Standard | 13.100 |
| Word Count Estimation | 18,162 |
| Date of Issue | 2026-02-27 |
| Date of Implementation | 2026-09-01 |
| Older Standard (superseded by this standard) | GB 29742-2013 |
| Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China |
GB 29742-2026: Safety specification for magnesium and magnesium alloys smelting
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 13.100
CCSH09
National Standards of the People's Republic of China
Replaces GB 29742-2013
Safety regulations for magnesium and magnesium alloy smelting
Published on 2026-02-27
Implemented on 2026-09-01
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.General Requirements 2
5.Factory layout and buildings/structures 2
6.Equipment, Facilities, and Operational Safety 3
6.1 General Requirements 3
6.2 Calcination 4
6.3 Balls 4
6.4 Restoration 5
6.5 Refining and Ingot Casting 6
6.6 Melting (Alloying) 7
6.7 Polishing 7
6.8 Packaging, transportation, and storage 7
6.9 Conveying and feeding 7
6.10 Coal Powder Preparation 8
7 Electrical safety 8
8 Gas Safety
8.1 General Requirements
8.2 Gas 9
8.3 Natural Gas 9
9.Verification Methods
Reference 11
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document replaces GB 29742-2013 "Safety Production Specifications for Magnesium and Magnesium Alloy Smelting". Compared with GB 29742-2013, the only changes are in the structural design.
Aside from integration and editorial changes, the main technical changes are as follows.
---The scope of application has been changed, clarifying that this document does not apply to electrolytic magnesium refining (see Chapter 1, Chapter 1 of the.2013 edition);
---The terms "calcination," "calcined whitening," "pelletized material," "pan kiln," "reduction," and "alloying," along with their definitions, have been removed (see sections 3.1 and 3.2 of the.2013 edition).
3.3, 3.4, 3.5, 3.8);
---Two new terms, "horizontal reduction furnace" and "vertical reduction furnace," and their definitions have been added (see 3.2 and 3.3);
---Added safety requirements for risk classification, hazard identification and mitigation, and confined space operations (see Chapter 4);
---The requirements for the emergency response plan have been changed (see 4.5, Chapter 6 of the.2013 edition);
---Added requirements for the safety protection of buildings (including bridges, tunnels, etc.) and pipelines crossing roads (see 5.4);
---Safety requirements for the rotary kiln drive system have been added (see 6.2.1);
---Added the requirement that real-time monitoring and alarms for pipeline pressure, flow rate, and temperature be installed in vertical kiln production (see 6.2.2);
---Added safety requirements for pellet preparation (see 6.3);
---Safety requirements for horizontal and vertical reduction furnaces have been added (see 6.4.1 and 6.4.2);
---The refining safety requirements have been changed (see 6.5.1, 5.4.2 in the.2013 version);
---The requirement for inspecting the welding lugs of the magnesium ladle has been added (see 6.5.1.6);
---Added safety requirements such as safety interlocks for equipment used in the casting process (see 6.5.2);
---The safety requirements for smelting (alloying) operations have been changed (see 6.6, 5.5 in the.2013 edition);
---Safety requirements for grinding operations have been added (see 6.7);
---The safety requirements for packaging, transportation, and storage have been changed (see 6.8, 5.6 in the.2013 edition);
---Safety requirements for pulverized coal preparation have been added (see 6.10);
---Added requirements for monitoring alarms, shut-off devices, and interlocks for gas-using equipment (see 8.1);
---Safety requirements for coal gas, natural gas, etc., have been revised (see 8.2, 8.3, and 5.1 of the.2013 edition);
---Added safety requirements for semi-coke oven gas (see 8.2).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed and is under the jurisdiction of the Ministry of Emergency Management of the People's Republic of China.
The release history of this document and the document it replaces is as follows.
---First published in.2013 as GB 29742-2013;
---This is the first revision.
Safety regulations for magnesium and magnesium alloy smelting
1 Scope
This document specifies the general requirements, plant layout and buildings, equipment and facilities, and production safety in the smelting and production of magnesium and magnesium alloys.
Safety technical requirements for electrical safety, gas safety, etc., are described, along with their verification methods.
This document applies to the safety management of magnesium and magnesium alloy smelting production processes.
This document does not apply to the electrolytic process for magnesium refining.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB 2894 Safety Colors and Safety Signs
GB 4053.1 Safety requirements for fixed steel ladders and platforms - Part 1.Straight steel ladders
GB 4053.2 Safety requirements for fixed steel ladders and platforms - Part 2.Steel inclined ladders
GB 4053.3 Safety requirements for fixed steel ladders and platforms - Part 3.Industrial guardrails and steel platforms
GB 4387 Safety Regulations for Railway and Road Transportation within Industrial Enterprises
GB 6222 Safety Specifications for Coal Gas in Industrial Enterprises
GB 12158 General requirements for the prevention of electrostatic discharge accidents
GB 14784 Safety Specifications for Belt Conveyors
GB 15577 Safety Regulations for Dust Explosion Prevention
GB 15605 Dust Explosion Relief Standard
GB 39800.1 Specifications for the Configuration of Personal Protective Equipment Part 1.General Provisions
GB 39800.3 Specifications for the Configuration of Personal Protective Equipment Part 3.Metallurgical and Nonferrous Metals
GB 50016 Code for Fire Protection Design of Buildings
GB 50057 Code for Design of Lightning Protection of Buildings
GB 50058 Design Code for Electrical Installations in Explosive Atmospheres
GB 50187 Standard for General Layout Design of Industrial Enterprises
GB 50544 Standard for General Layout Planning and Transportation Design of Nonferrous Metals Industry
GB 50630 Fire Protection Design Code for Nonferrous Metal Engineering
GB 51270 Standard for Process Design of Magnesium Smelters
GB 55037 General Code for Fire Protection of Buildings
TSG11 Boiler Safety Technical Regulations
3 Terms and Definitions
The following terms and definitions apply to this document.
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