Standard No.:	GB 29742-2026
English Name:	Safety specification for magnesium and magnesium alloys smelting
Chinese Name:	镁及镁合金冶炼安全规范
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2026-02-27
Implemented on:	2026-9-1
Status:	to be valid
Superseding:	GB 29742-2013 Safety specification for magnesium and magnesium alloys production
Target Language:	English
File Format:	PDF
Word Count:	10500 words
Translation Price(USD):	315.0
Delivery:	via email in 1~5 business day

GB 29742-2026 Safety specification for magnesium and magnesium alloys smelting English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS CCS National Standard of the People's Republic of China ‌GB/T 29742-2026 Safety specification for magnesium and magnesium alloys smelting 镁及镁合金冶炼安全规范 Issue date: 2026-02-27 Implementation date: 2027-03-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative References 3 Terms and Definitions 4 General Requirements 5 Plant Layout and Buildings (Structures) 6 Equipment, Facilities, and Operational Safety Safety Specification for Magnesium and Magnesium Alloy Smelting 1 Scope This document specifies the general requirements, plant layout and building (structure) requirements, equipment, facilities and production safety requirements, electrical safety requirements, gas safety requirements, and other safety technical requirements during the production process of magnesium and magnesium alloy smelting, and describes the verification methods thereof. This document applies to safety management during the production process of magnesium and magnesium alloy smelting. This document does not apply to magnesium smelting by electrolysis. 2 Normative References The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB 2894 Safety colours and safety signs GB 4053.1 Safety requirements for fixed steel ladders and platforms — Part 1: Steel vertical 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 in industrial enterprises GB 6222 Safety regulations for gas in industrial enterprises GB 12158 General guidance for preventing electrostatic accidents GB 14784 Safety code for belt conveyors GB 15577 Safety regulations for dust explosion prevention GB 15605 Dust explosion venting safety regulations GB 39800.1 Specification for the provision of personal protective equipment — Part 1: General GB 39800.3 Specification for the provision of personal protective equipment — Part 3: Metallurgy, non-ferrous metals GB 50016 Code for fire protection design of buildings GB 50057 Design code for protection of structures against lightning GB 50058 Code for design of electrical installations in explosive atmospheres GB 50187 Code for design of general layout of industrial enterprises GB 50544 Design standard for general layout and transportation of non-ferrous metals industry GB 50630 Code for fire protection design of non-ferrous metal engineering GB 51270 Design standard for process of magnesium smelting plant GB 55037 General code for building fire protection TSG 11 Safety technical regulations for boilers 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 crystalline magnesium The product obtained after the magnesium vapor generated during the reduction process of metallic magnesium is condensed in a condenser. 3.2 horizontal tank reduction furnace A type of magnesium smelting equipment where the reduction tanks are placed horizontally. 3.3 vertical tank reduction furnace A type of magnesium smelting equipment where the reduction tanks are placed vertically. 3.4 refining A process in which crude magnesium is heated and melted, then impurities and oxides are removed to meet specific requirements for internal purity and other properties. 3.5 casting A process in which molten metal is continuously injected into the mold of a continuous casting machine through a specific pouring system, and then cooled and solidified to form ingots. 4 General Requirements 4.1 Processes, equipment, and facilities explicitly prohibited or phased out by the state shall not be used. 4.2 Safety facilities for new construction, renovation, and expansion projects shall be designed, constructed, and put into operation simultaneously with the main project. The safety facility design for metal smelting construction projects shall be reviewed and approved before construction commences. 4.3 A system for risk classification control and hazard identification and management shall be established. Based on the characteristics of the enterprise's production processes, equipment, facilities, and work activities, safety inspection checklists shall be developed, and safety inspections shall be conducted. Discovered safety hazards shall be rectified and managed with closed-loop control. 4.4 Before introducing new processes, technologies, materials, or equipment into operation, a safety risk assessment shall be conducted, relevant safety production management systems shall be improved, and relevant personnel shall receive safety production education and training. Personnel shall only be allowed to work after passing the examination. 4.5 Emergency response plans for production safety accidents shall be established based on the characteristics and hazards of potential production safety accidents that may occur in the enterprise. The emergency response plans shall be reviewed, issued, and filed. Emergency drills shall be organized regularly, the drill results shall be evaluated, and the emergency response plans shall be continuously improved. 4.6 Confined spaces shall be identified, and a management ledger shall be established. The ledger shall include at least information such as the number, locations, and hazardous factors of confined spaces and shall be updated promptly. 5 Plant Layout and Buildings (Structures) The lightning protection design of buildings and structures shall comply with the provisions of GB 50057. 5.2 The division of fire zones, fire separation distances, and the fire resistance rating design of structures shall comply with the provisions of GB 50016, GB 50630, and GB 55037. 5.3 The safety evacuation routes provided within the plant shall comply with the provisions of GB 50016 and shall be kept unobstructed. Emergency lighting and evacuation signs shall be installed along the evacuation routes. 5.4 Buildings, structures (including bridges, tunnels, etc.), and pipelines that cross factory roads shall be equipped with anti-collision facilities and height limit signs. The following provisions apply: