GB18218-2018
Identification of major hazard installations for hazardous chemicals
危险化学品重大危险源辨识
GB 18218-2018 is a current mandatory Chinese national standard for Identification 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 Mar 1, 2019.
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 production, storage, use, and business operating entities dealing with hazardous chemicals. It is mandatory for facilities managing these substances. The standard explicitly excludes off-site transportation of hazardous chemicals, including rail, road, water, air, and pipeline transport. It also does not apply to nuclear facilities, military facilities, mining (except for processing and storage), and offshore oil and gas extraction activities.
Technical requirements
The standard specifies the criteria for identifying major hazard installations based on the hazard characteristics and quantities of hazardous chemicals. It classifies major hazard sources into production units and storage units. Facilities must calculate the ratio of actual quantity to the threshold quantity for each chemical to determine if a unit constitutes a major hazard source. For multiple chemicals, a summation formula is used. The standard also details the identification requirements for mixtures, treating them as pure substances if they share the same hazard category. Furthermore, it introduces a grading system using an R-value, which incorporates correction coefficients for chemical toxicity (β) and exposed personnel outside the plant (α). The R-value determines the hazard level, ranging from Level 1 to Level 4, with higher levels indicating greater risk. Referenced classifications follow the GB 30000 series standards.
Testing methods
This standard does not prescribe physical laboratory testing methods but outlines an evaluation procedure based on quantitative assessment. The process involves determining the actual quantity of hazardous chemicals present, typically based on the design maximum capacity of storage tanks or warehouses. Engineers must compare these quantities against the specified threshold quantities and apply the summation formula for multi-chemical units. The grading method requires calculating the R-value using correction coefficients from the provided tables, referencing hazard categories defined in the GB 30000 series.
FAQs
What facilities are regulated under GB 18218-2018?
It regulates production, storage, use, and business operating entities dealing with hazardous chemicals, specifically identifying units that meet or exceed specified threshold quantities.
How does GB 18218-2018 handle mixtures of hazardous chemicals?
If a mixture belongs to the same hazard category as its pure substance, it is treated as a pure substance and calculated as a whole. Otherwise, it must be evaluated based on its new hazard category.
How is the major hazard source level determined?
The level is determined by the R-value, which is calculated using the ratio of actual quantity to threshold quantity, adjusted by correction coefficients for chemical toxicity and the number of exposed personnel outside the facility.
The summary above provides a high-level overview of GB 18218-2018. 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 18218-2018 today to access all detailed parameters, tables, and calculation procedures.
Applicability hints
- Type
- Safety
- CCS
- A80
- ICS
- 13.300
- Competent department
- Ministry of Emergency Management
- Technical committee
- National Technical Committee on Work Safety of Standardization Administration of China
Relationships
Replaces:GB 18218-2009