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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by and is under the jurisdiction of the Ministry of Emergency Management of the People's Republic of China.
Risk criteria for hazardous chemicals production unit and storage installations
1 Scope
This standard specifies the acceptable risk criteria values for individual risks and societal risks of hazardous chemicals production unit and storage installations.
This standard is applicable to the risk determination of hazardous chemicals production unit and storage installations in site selection and surrounding land use planning.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
individual risk
frequency of deaths caused by hazardous chemical accidents assuming that personnel are in a certain place for a long time without protection, which is expressed by times per year
2.2
societal risk
frequency of certain injuries suffered by groups (including employees of surrounding enterprises and the public) in hazardous areas, which is usually expressed as the cumulative frequency (F) of accidents with N or more deaths, expressed as a curve (F-N curve) of the relationship between the cumulative frequency and the number of deaths
2.3
protected object
off-site installations or places which may cause casualties under the influence of the accidents of hazardous chemicals production unit and storage installations
3 Individual risk criteria
3.1 Protected object classification
3.1.1 Protected objects are classified into highly sensitive protected objects, important protected objects and general protected objects according to the main properties of actual use of installations or places.
3.1.2 Highly sensitive protected objects include the following installations or places:
a) Cultural installations. Including: comprehensive cultural activity centers, cultural centers, youth palaces, children activity centers, senior activity centers and other installations.
b) Education installations. Including: colleges and universities, secondary specialized schools, sports training bases, middle schools, primary schools, kindergartens, spare-time schools, private training institutions and their auxiliary installations, including the living places of students in independent areas provided for schools.
c) Medical and health places. Including: medical treatment, health care, hygiene, epidemic prevention, rehabilitation and first aid places; excluding: health service installations of the residential area level or below.
d) Social welfare installations. Including: welfare homes, nursing homes, orphanages and other installations providing welfare and charity services for the society and their auxiliary installations.
e) Other places where the groups with relatively low self-protection ability in accident scenes gather.
3.1.3 Important protected objects include the following installations or places:
a) Public book exhibition installations. Including: public libraries, museums, archives, science and technology museums, memorial halls, art galleries, exhibition halls, exhibition centers and other installations.
b) Cultural relics protection units.
c) Religious places. Including: temples, monasteries, Taoist temples, churches and other places specially used for religious activities.
d) Urban rail transit installations. Including: aboveground lines and sites of urban rail transit in independent area.
e) Military and security installations. Including: installations specially used for military purposes, prisons and detention installations.
f) Foreign affairs places. Including: embassies, consulates and offices of foreign governments and international organizations in China.
g) Other places with protection values or where personnel are inconvenient to evacuate in case of accident.
3.1.4 General protected objects are classified into Classes I, II and III according to their scale. See Table 1 for classification of general protected objects.
Table 1 Classification of general protected objects
Protected object type Class I protected objects Class II protected objects Class III protected objects
Residential buildings and corresponding service installations
Residential buildings include: rural residential lands, low-rise residential areas, middle-rise and high-rise residential buildings, etc.
The corresponding service installations include: the child cares of the residential area level or below, and the culture, sports, commerce, health services, old-age care and disabled assistance installations, excluding primary and secondary schools. The number of households is more than 30, or the number of residents is more than 100 The number of households is more than 10 and less than 30, or the number of residents is more than 30 and less than 100 The number of households is less than 10, or the number of residents is less than 30
Administrative office installations
Including: party and government organs, social organizations, scientific research organizations, public institutions and other office buildings and related installations Party and government organs at or above the county level, and other administrative office buildings with more than 100 employees Administrative office buildings with less than 100 employees
Stadiums
Excluding: special sports installations for schools and other institutions Stadiums with a total building area of more than 5,000m2 Stadiums with a total building area of less than 5,000m2
Commercial, catering and other comprehensive commercial service buildings
Including: shops, shopping malls, supermarkets, market-oriented commercial buildings or places with retail function as the main function; farmers' market with wholesale function as its main function; restaurants, dining halls, bars and other catering places or buildings Buildings with a total building area of more than 5,000m2, or outdoor places with more than 300 people at peak hours Buildings with a total building area of more than 1,500m2 and less than 5,000m2, or outdoor places with more than 100 people and less than 300 people at peak hours Buildings with a total building area of less than 1,500m2, or outdoor places with less than 100 people at peak hours
Hotels and accommodation buildings
Including: guest houses, hotels, hostels, serviced apartments, holiday villages, etc. Buildings with more than 100 beds Buildings with less than 100 beds
Financial and insurance, art media, technical service and other comprehensive business office buildings Buildings with a total building area of more than 5,000m2 Buildings with a total building area of more than 1,500m2 and less than 5,000m2. Buildings with a total building area of less than 1,500m2
Entertainment, sports and recreation buildings or places
Including: theatres, concert halls, cinemas, dance halls, netbars and large-scale amusement places;
Racecourses, golf courses, skating rinks, parachuting grounds, motorcycle fields, shooting galleries and other recreation places Buildings with a total building area of more than 3,000m2, or outdoor places with more than 100 people at peak hours Buildings with a total building area of less than 3,000m2, or outdoor places with less than 100 people at peak hours
Business outlets of public installations Business outlets of other public installations. Including the business outlets of telecommunications, postal, water supply, gas, power supply, heating and other public installations Business outlets of gasoline and gas filling stations
Other non-hazardous chemicals industrial enterprises Buildings with more than 100 employees on duty in the enterprise Buildings with less than 100 employees on duty in the enterprise
Transportation hub installations
Including: railway passenger stations, highway long-distance passenger stations, port passenger terminals, airports, traffic service installations (excluding traffic command center and traffic court), etc. Transportation hub installations with a maximum number of passengers of more than 100 Transportation hub installations with a maximum number of passengers of less than 100
Urban park plazas Urban park plaza with a total building area of more than 5,000m2 Urban park plaza with a total building area of more than 1,500m2 and less than 5,000m2 Urban park plaza with a total building area of less than 1,500m2
Note 1: Rural residential areas and low-rise residential areas based on low-rise buildings (1~3-storey residential buildings) shall be subject to scale accounting in units of the whole, while mid-rise (4~6-storey residential buildings) and above buildings shall be subject to scale accounting in units of single building. If other protected objects are not separately specified, they shall be classified based on independent buildings.
Note 2: When calculating the number of personnel, the number of households and residents shall be calculated according to the permanent resident population, while the number of enterprise personnel shall be calculated according to the maximum number of employees on duty.
Note 3: Comprehensive buildings with compatibility are classified according to their main types. If it is difficult to determine the main properties of comprehensive buildings, they are classified according to the main properties of the ground floor.
Note 4: The "more than" mentioned in this table includes the figure given and "less than" excludes the figure given.
3.2 Individual risk criteria for protected objects
The individual risks borne by the protected objects around hazardous chemicals production unit and storage installations shall not exceed the requirements of the individual risk criteria in Table 2.
Foreword I
1 Scope
2 Terms and definitions
3 Individual risk criteria
4 Societal risk criteria
Bibliography
