GB15735-2012
Requirements for the safety and health in production process of metal heat treatment
金属热处理生产过程安全、卫生要求
GB 15735-2012 is a current mandatory Chinese national standard for Requirements for the safety and health in production process of metal heat treatment. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jun 1, 2013.
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 general technical requirements for safety and health in the metal heat treatment production process. It applies to all heat treatment manufacturing operations, the production of heat treatment equipment, and any associated safety and health processes within China. It is a mandatory standard for all domestic and foreign manufacturers operating heat treatment facilities in China. It covers various processes including overall heat treatment, surface heat treatment, and salt bath heat treatment.
Technical requirements
The standard comprehensively outlines the hazardous and harmful factors inherent in heat treatment production, categorizing risks such as flammable materials, explosive substances, and toxic gases. It mandates strict facility design principles, requiring independent or isolated workshops with adequate ventilation, explosion-proof electrical systems, and specialized storage areas for hazardous chemicals like liquid ammonia and liquefied petroleum gas. For production equipment, the standard sets forth specific safety interlocks and operational protocols for various furnace types, including resistance furnaces, fuel furnaces, and salt bath furnaces. Equipment must feature automated safety mechanisms such as over-temperature alarms, automatic power cutoffs, and emergency inert gas injection systems. Regarding process operations, the standard dictates safe working parameters for surface hardening, chemical heat treatment, and vacuum heat treatment. It emphasizes strict atmospheric control, requiring the use of neutral gases to purge furnaces before introducing combustible gases to prevent explosions. The standard also defines critical limits, such as maintaining the working temperature of quenching oils at least 80°C below their open flash points. Furthermore, the standard mandates comprehensive protective measures for workers and the environment. This includes the enforcement of personal protective equipment (PPE), regular environmental monitoring for toxic gases and dust, and strict safety protocols for confined space entry and equipment maintenance.
Testing methods
While primarily a specification standard, it references several testing and measurement protocols to verify compliance. This includes insulation resistance testing for electrical safety in resistance and vacuum furnaces, and environmental monitoring for harmful substances in the workplace air according to GB/T 27946. The standard also requires functional testing of safety devices, such as over-temperature alarms, automatic gas shutoff valves, and emergency ventilation systems, to ensure they operate correctly under fault conditions.
FAQs
What products and facilities are regulated under GB 15735-2012?
This standard regulates the safety and health requirements for the metal heat treatment production process. It applies to all heat treatment manufacturing facilities, as well as the production of heat treatment equipment and related safety operations in China.
Are there any significant updates in GB 15735-2012 compared to the 2004 version?
The 2012 version is a mandatory standard that replaces GB 15735-2004. Key updates include modified requirements for facility construction and working environments, the addition of safety protocols for confined spaces and equipment maintenance, and the renaming of ion nitriding equipment to plasma heat treatment equipment.
How does GB 15735-2012 differ from international ISO safety standards?
While it shares similar safety objectives with international standards, GB 15735-2012 is the mandatory national standard specifically enforced for heat treatment facilities operating in China. It references Chinese national standards (GB/T series) for specific testing and equipment safety parameters, requiring localized compliance verification.
The summary above provides a high-level overview of GB 15735-2012. To ensure complete compliance for your products and facilities entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 15735-2012 today to access all detailed parameters, safety protocols, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- J36
- ICS
- 25.200
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology
Relationships
Replaces:GB 15735-2004