GB17681-2024
Technical specification for safety monitoring of major hazard installations for hazardous chemicals
危险化学品重大危险源安全监控技术规范
GB 17681-2024 is a current mandatory Chinese national standard for Technical specification for safety monitoring of major hazard installations for hazardous chemicals. It appears in the Chemicals compliance cluster with a product safety focus and has an implementation date of Jun 1, 2025.
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 applies to the safety monitoring of major hazard installations for hazardous chemicals in newly built, reconstructed, and expanded construction projects of hazardous chemical production and operation enterprises, as well as chemical enterprises using hazardous chemicals for production. It is mandatory for facilities handling hazardous chemicals above critical quantities. It does not apply to major hazard installations involving city gas, underground water-sealed caverns, off-site transportation, port area storage operations, or hazardous chemicals for national defense research.
Technical requirements
The standard specifies comprehensive technical requirements for safety monitoring systems, covering basic requirements, design, construction, quality acceptance, operation, and alarm management. Key aspects include the integration of Basic Process Control Systems (BPCS), Safety Instrumented Systems (SIS), and Gas Detection and Alarm Systems (GDS). For production and storage units, the standard mandates continuous monitoring of critical parameters such as level, temperature, pressure, and flow. It sets specific requirements for different types of storage tanks, including atmospheric, low-pressure, pressure, and fully refrigerated tanks, detailing the necessary instrumentation and interlock logic for high-high and low-low level alarms. The standard also outlines requirements for television monitoring systems and lightning warning systems, ensuring real-time surveillance and early warning capabilities. Systems must be designed to maintain long-term stable operation, ensure data continuity, and support information sharing via standard communication protocols. Additionally, it references GB/T 20438 and GB/T 21109 for functional safety requirements of SIS.
Testing methods
Testing and verification involve checking design documents, HAZOP and LOPA analysis reports, SIL verification reports, and lightning protection testing reports. During construction, 100% of instruments must undergo single-unit calibration, loop tests, and system tests before commissioning. Quality acceptance requires specific sampling tests for alarm, control, and interlock loops, with strict pass criteria. For example, alarm point testing requires at least 10% sampling for systems with 50 or more points, and all sampled points must pass or the sampling rate is doubled.
FAQs
What products or facilities are regulated under GB 17681-2024?
GB 17681-2024 regulates safety monitoring systems for major hazard installations involving hazardous chemicals in chemical production, operation, and usage enterprises. It covers production units, storage units (including various tank types and warehouses), and associated control systems.
Are there any significant updates from the previous GB 17681-1999 version?
Yes, the 2024 version introduces several major changes, including new requirements for production unit monitoring, television monitoring systems, lightning and anti-static protection, construction requirements, operation and maintenance, and alarm management. It also updates the scope and instrumentation control requirements.
Does GB 17681-2024 specify requirements for gas detection systems?
Yes, the standard details comprehensive requirements for Gas Detection and Alarm Systems (GDS), including the placement of detectors for combustible and toxic gases, alarm set points (e.g., based on LEL or OEL), and the independence of GDS from BPCS and SIS.
The summary above provides a high-level overview of GB 17681-2024. To ensure complete compliance for your 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 17681-2024 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- C66
- ICS
- 13.320
- Competent department
- Ministry of Emergency Management
- Technical committee
- National Technical Committee on Work Safety of Standardization Administration of China
Relationships
Replaces:GB 17681-1999