GB29742-2026
Safety specification for magnesium and magnesium alloys smelting
镁及镁合金冶炼安全规范
GB 29742-2026 is an upcoming mandatory Chinese national standard for Safety specification for magnesium and magnesium alloys smelting. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Sep 1, 2026.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard specifies the safety technical requirements for the smelting production process of magnesium and magnesium alloys, including overall requirements, plant layout, equipment safety, electrical safety, and gas safety. It is applicable to the safety management of magnesium and magnesium alloys smelting processes. However, it is explicitly stated that this standard does not apply to electrolytic magnesium smelting.
Technical requirements
The standard outlines comprehensive safety management protocols, including the establishment of risk grading control and hidden danger investigation systems. Facilities must adhere to strict layout requirements, ensuring proper fire and explosion prevention measures. Fire water extinguishing facilities shall not be installed in magnesium smelting and reduction workshops; instead, specialized Class D fire extinguishers and dry sand must be utilized. Additionally, areas with dust explosion hazards must comply with GB15577 regulations. Technical requirements cover various production stages such as calcination, pelletizing, reduction, refining, and melting. For instance, horizontal and vertical tank reduction furnaces must implement specific safety interlocks and monitoring systems. During refining and casting operations, strict protocols for crucible maintenance, liquid metal handling, and personal protective equipment (PPE) are mandated. Workers must not use water or standard fire extinguishers on magnesium fires, highlighting the critical need for specialized emergency responses. Electrical safety requirements mandate proper zoning of explosion-hazardous areas and strict grounding or anti-static measures for equipment. Gas safety protocols require the installation of low-pressure monitoring alarms and emergency automatic shut-off devices for gas pipelines. Combustion devices using forced air must interlock low-pressure alarms with emergency shut-off valves. Specific requirements for coal gas, natural gas, and semi-coke oven gas systems are also detailed to prevent leaks and explosions.
Testing methods
Verification of compliance is primarily achieved through document review and on-site inspection. This includes examining safety production rules, emergency plans, and confined space operation logs. For design and manufacturing processes, technical files and as-built drawings are verified. On-site inspections assess equipment operation, safety warning signs, and the implementation of maintenance and hazardous operation protocols.
FAQs
What products are regulated under GB 29742-2026?
It regulates the safety management of magnesium and magnesium alloys smelting production processes, covering equipment, facilities, and operational safety.
Does GB 29742-2026 apply to electrolytic magnesium smelting?
No, the standard explicitly states that it does not apply to electrolytic magnesium smelting.
What are the key updates in the 2026 version compared to GB 29742-2013?
The 2026 version adds safety requirements for risk grading, confined space operations, horizontal and vertical tank reduction furnaces, and coal powder preparation, while updating gas safety and emergency plan requirements.
The summary above provides a high-level overview of GB 29742-2026. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 29742-2026 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- H09
- ICS
- 13.100
- Competent department
- Ministry of Emergency Management
- Technical committee
- National Technical Committee on Work Safety of Standardization Administration of China
Relationships
Replaces:GB 29742-2013 (Current)