Standard No.:	GB/T 37243-2019
Chinese Name:	危险化学品生产装置和储存设施外部安全防护距离确定方法
English Name:	Determination method of external safety distance for hazardous chemicals production units and storage installations
Professional Classification:	A80
ICS Classification:	13.100
Issued by:
Issued on:	2019-02-25
Implemented on:	2019-06-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	30000 words
Price(USD):	900 (USD)
Delivery:	via email in 1-8 business day

1 Scope

This standard specifies the determination method of external safety distance for hazardous chemicals production units and storage installations.

This standard is applicable to determination of the external safety distance for hazardous chemicals production units and storage installations.

This standard is not applicable to the hazardous chemicals production units and storage installations used for production and circulation enterprises in civil explosive industry, fireworks and firecracker production enterprises and storage warehouses, automobile gasoline and gas filling stations, oil and gas transmission pipelines, urban gas, port areas and national defense research and production.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB 18218 Identification of major hazard installations for hazardous chemicals
GB 36894 Risk criteria for hazardous chemicals production unit and storage installations
GB 50089-2018 Safety standard for design of engineering of civil explosive materials

3 Terms and definitions

For the purpose of this document, the following terms and definitions apply.

3.1
explosive
all explosives listed in the Catalogue of hazardous chemicals and the Classification information form of hazardous chemicals

3.2
toxic gas
gas listed in the Catalogue of hazardous chemicals and the Classification information form of hazardous chemicals, with the hazard characteristic category including acute toxicity -inhalation

3.3
flammable gas
gas listed in the Catalogue of hazardous chemicals and the Classification information form of hazardous chemicals, with the hazard characteristic category including flammable gas, Categories 1 and 2

3.4
external safety distance
distance or risk control line set between the hazardous chemicals production units and storage installations and the off-plant protected objects in order to prevent and mitigate the impact of potential accidents (fire, explosion, poisoning, etc.) of these units and installations on the protected objects

3.5
ignition source
initial energy sources that promote the combustion of combustible substance and comburants, including open flame, heat of chemical reaction, heat radiation, high-temperature surface, friction, impact, etc.