HG 20532-1993 Safety and Health Regulations for Chemical Powder Engineering Design
Some standard content:
Industry Standard of the People's Republic of China
HG20532-93
Safety and Hygiene Specifications for the Powder Engineering of Chemical Industry1994-05-07
1994-10-01
Ministry of Chemical Industry of the People's Republic of China
Industry Standard of the People's Republic of China
Safety and Hygiene Specifications for the Powder Engineering of Chemical Industry industryHG20532-93
Editor: Eighth Design Institute of the Ministry of Chemical Industry
Approval Department: Ministry of Chemical Industry Implementation Date: October 1, 1994 Engineering Construction Standard Editing Center of the Ministry of Chemical Industry
1994 Beijing
Ministry of Chemical Industry Document
Hua Jian Fa (1994) No. 338
Notice on the Release of Four Chemical Industry Standards, including "Safety and Health Regulations for Chemical Powder Engineering Design" To all provinces, autonomous regions, municipalities directly under the Central Government, and cities with independent planning status, and all relevant design units:
Four standards, including "Safety and Health Regulations for Chemical Powder Engineering Design" organized and compiled by the Ministry's Hoisting and Transportation Design Technology Center (see the attachment for details), have been reviewed and approved as chemical industry standards and will be implemented from October 1, 1994. The four standards are managed by the Ministry's Hoisting and Transportation Design Technology Center and published and distributed by the Ministry's Engineering Construction Standard Editing Center. If you have any questions or comments during the implementation, please inform the Ministry's Hoisting and Transportation Design Technology Center. Ministry of Chemical Industry
May 7, 1994
Appendix:
"Safety and Health Regulations for Chemical Powder Engineering Design" and other four chemical industry standards
Standard Name
1. Safety and Health Regulations for Chemical Powder Engineering Design 2. Unified Regulations on Common Terms and Terms for Chemical Mechanized Transportation Design
3. Regulations on the Design of Chemical Solid Raw Materials and Fuels 4. Chemical solid material loading system design regulationsww.bzsoso
Editing unit
Chemical Institute No. 8
Standard number
HG20532-93
Global Corporation
·HG20533-93
Chemical Institute No. 2
Chemical Institute No. 6
HG20534-93
HG20535-93
1 General
2 Classification of chemical powders
2.1 Classification of toxicity hazard degree of chemical powders
2.2 Classification of explosive and flammable powders of chemical powders++
2.3 Classification of corrosive media of chemical powders
3 Operational safety and protection.
3.1 Layout design
3.2 Mechanical equipment
3.3 Electrical
Fire and explosion prevention
4.1 Classification of fire hazards in chemical powder production equipment and explosion sites4.2 Layout of chemical powder process equipment and facilities4.3 Principles for selection of process equipment and electrical equipment4.4 Technical measures for fire and explosion safety in chemical powder designStorage volume regulations for chemical powder fire hazardous goods warehouse4.5
Dust and poison prevention
Permitted dust concentration in chemical powder operation positionsPermitted emission volume of dust-containing tail gas in chemical powder projects5.21
5.3 Principles for dust and poison prevention design·
Technical measures for dust prevention|| tt||Anti-toxic technical measures
Noise control
Noise control principles
6.2 Design standards for noise control in chemical powder projects6.3 Requirements for noise control layout
Requirements and regulations for noise control technical measures6.41
（4）
*（15)
7 Anti-scalding and chemical burn prevention
7.1 Anti-scalding
7.2 Anti-chemical burn prevention
Radiation protection
8.1 Radiation sources of chemical powder materials and equipment8.2 Radiation protection safety requirements and measures
9 Heatstroke prevention, cold protection and production sanitation facilities
9.1 Provisions on temperature requirements for the workplace in summer and winter 9.2 Requirements for heat and cold prevention process layout
9.3 Measures for heat and cold prevention
9.4 Ventilation and air exchange·
9.5 Sanitary facilities for chemical powder engineering design production Appendix A
Appendix B
Appendix C
Appendix D
Maximum allowable concentration of dust in workshop air (supplement)·Allowable emission concentration of dust-containing tail gas (supplement) (48)
Examples of toxicity hazard classification of common chemical powders (reference) (67)
Examples of explosive and combustible dust (reference)·Appendix E
Classification of corrosion degree of chemical powder media (reference) (99)
*+***. (106)Www.bzxZ.net
Appendix F Chemical powder media that cause chemical burns to the human body (reference) (107) Appendix G
Examples of fire hazard classification of production equipment (reference) (109)
Appendix H: Dust removal and exhaust air volume of common production equipment (reference) (110)
Appendix I Noise range of common equipment in powder engineering (reference) +** (115)
Article explanation
1 General
1.0.1 The design of chemical powder engineering must implement the principle of "safety first, prevention first", strictly implement the various policies and regulations on "enterprise safety and health" formulated by relevant national departments, so that the design meets the requirements of safety and health, advanced technology and economic rationality. 1.0.2 These regulations aim to improve the level of labor safety and industrial hygiene in the design of chemical powder engineering, prevent harm to human health and safety in production, and ensure safe production.
1.0.3 These regulations apply to the design of powder material processing, storage, loading and unloading, transportation and packaging in chemical enterprises.
In addition to implementing these regulations, the design of chemical powder engineering shall also comply with the requirements of the current national 1.0.4
relevant standards and specifications.
1.0.5 If these regulations conflict with relevant regulations issued by the state, they shall be implemented in accordance with the standards, specifications, procedures or regulations issued by the state. 1.0.6 The main standards related to or cited in this regulation are as follows: "Classification of Hazard Degrees of Occupational Exposure to Toxic Substances" GB 5044--85
GB12476.1-90 "Explosion-proof Electrical Equipment for Explosive Dust Atmospheres-Dust Explosion-proof Electrical Equipment"
GB 50160-92
GB 5748--85
GB 5817-86
GBJ 87-85
.GB 6763-86
GB 4053. 1-83
GB4053.2-83
GB 4053.3-83
《Design fire prevention regulations for oil refining and chemical enterprises》《Determination method of dust in the air of the workplace》《Production dust operation hazard level classification》《Industrial enterprise noise control design specification》《Restriction standard for radioactive substances in industrial waste residues used in building materials》
《Fixed steel straight ladder》
《Fixed steel inclined ladder》
《Fixed industrial protective railing》
m2
GB4053.4-83
GB146.2—83
HGJ 21—89
HG20518-92
TJ 34—79
TJ 19—75
《Fixed Industrial Steel Platform》
《Standard Gauge Railway Construction Limits》
《Design Code for Power Supply in Explosion and Fire Hazardous Environments of Chemical Enterprises》
《Design Principles for Chemical Mechanized Transportation》
《Design Standards for Lighting in Industrial Enterprises》
《Design Code for Heating, Ventilation and Air Conditioning》.bzsos0
2 Classification of Chemical Powders
2.1 Classification of Toxicity Hazard Level of Chemical Powders
The classification of toxicity hazard level shall be implemented in accordance with the national standard 《Classification of Hazard Level of Occupational Exposure to Toxic Substances》, see Table 2.1.1.
Toxicity hazard classification original classification
Inhalation LC50mg/m3
Dermal LDso*mg/kg
Oral LDso mg/kg
Acute poisoning morbidity
Chronic poisoning morbidity
Consequences of chronic poisoning
Carcinogenicity
Maximum allowable concentration, mg/m
(Highly hazardous)
(Extremely hazardous)
Easy to occur in production
(Moderate hazardous)
(Mild hazardous)
>20000
No acute
Poisoning may occur occasionally in production, and the consequences are poisoning. The incidence rate is high
(≥5%)
Poisoning, but there are
Acute effects
Poisoning diseases occasionally occur without chronic poisoning
The incidence rate is high
(<5%) or symptoms or symptoms with chronic effects with high incidence of symptoms with high incidence of symptoms
(≥20%)
High (≥10%)
After disengagement, after disengagement, after disengagement
, after continued progression, can basically recover, will not recover on its own, no or incurable
Human tumorigenic substances
Serious consequences
Adverse consequences
Experimental animal tumorigenicity
Suspected human tumorigenicity:
w.bzsoso:comNo tumorigenicity
2.1.2 In engineering design, when classifying chemical powders according to Table 2.1.1, it is necessary to comprehensively consider the influence of factors such as engineering process and physical properties of powder materials. 2.1.3 If the project involves multiple media, the medium with the greatest degree of toxicity among the medium components should be considered. When the content of a certain hazardous powder in the medium component is extremely small, the design unit shall comprehensively consider its hazard level and content. 2.1.4 Examples of classification of toxic hazard levels of common chemical powders are shown in Appendix C. 2.2 Classification of explosive and combustible powders of chemical powders 2.2.1 Explosive dust
2.2.1.1 Explosive dust refers to dust that can catch fire even when there is little oxygen in the air and can produce violent explosions when in suspension. Such as magnesium, aluminum, bronze and other dusts.
2.2.1.2 Explosive dust mixture refers to a mixture of dust or fibrous flammable substances mixed with air under atmospheric conditions. After ignition, the combustion will spread throughout the range.
2.2.2 Combustible dust
2.2.2.1 Combustible conductive dust refers to conductive dust that burns by exothermic reaction with oxygen in the air. Its resistivity is less than 10\2cm. Such as graphite, carbon black, coke, coal and other dusts.
2.2.2.2 Combustible non-conductive dust refers to dust that reacts with oxygen in the air to form an exothermic oxidation reaction and burns. Such as polyethylene, phenol resin and other dusts. 2.2.2.3 Suspended and accumulated dust refers to dust that floats in the air in a cloud-like shape and may float in an accumulated shape, which has been listed as a fire hazard. 2.2.3 Any powder material that can naturally volatilize, decompose or leave flammable gas or explosive gas should be regarded as combustible dust or explosive dust during the system transportation process (or pneumatic transportation).
2.2.4 Dust ignition temperature groups are shown in Table 2.2.4.4
W.bzsoso：com Dust ignition temperature
Temperature·degree
Ignition temperature T(℃)
T≥270
200T270
150T≤200
Note: When determining the dust temperature group, the lower value of the ignition temperature of the dust cloud and the ignition temperature of the dust layer should be taken.
2.2.5 Chemical powders Explosive and combustible powder classification can be carried out in accordance with "Explosion-proof electrical equipment for explosive dust environments and dust explosion-proof electrical equipment" and "Design Code for Electric Power in Explosive and Fire Hazardous Environments of Chemical Enterprises". 2.2.6 Examples of explosive and combustible dusts are shown in Appendix D. 2.3 Classification of corrosiveness of chemical powder media
2.3.1 In engineering design, the properties of the media, the concentration of powder in the environment, and the coagulation degree of the environment should be comprehensively considered to determine the corrosion degree category of equipment, pipelines and plant buildings, and take corresponding anti-corrosion measures.
2.3.2· Dry powders and powder media with low moisture absorption have low corrosion to metals and buildings when they form aerosols; when the environmental humidity is high, the powder media absorbs a large amount of moisture and deliquesces, forming a paste or molten (melted) state, it is more corrosive to metals and buildings. The classification of the corrosion degree of chemical powder media based on scientific experiments and engineering practice summary data is shown in Appendix E.
2.3.3 The main chemical powders that cause irritation, damage or burns to human skin or mucous membranes are shown in Appendix F.
3.1.1 Requirements for operating position
Operational safety and protection
3.1 Layout design
3.1.1.1. When arranging equipment and pipelines, it should be ensured that the operator has sufficient room for movement of the head, arms, hands, legs and feet during operation, and sufficient retreat space should be left at dangerous work sites.
3.1.1.2 Where pedestrians pass, the clear height of the building shall not be less than 2.2m. If it is really difficult to arrange, it shall not be less than 2m. The safe distance between equipment and equipment, and between equipment and buildings is shown in Table 3.1.1.2. Equipment layout safe distance (m)
Item:
Small equipment
Medium equipment
Large equipment
Or production line
Small equipment
Medium equipment
Large equipment
Or production line
Note: The edge of the equipment is calculated according to the maximum range of its active parts. 3. 1. 1.3
Table 3.1.1.2
Buildings,
Walls, Columns
The width of the pedestrian passage next to the continuous conveyor shall not be less than 0.8m, and shall not be less than 0.7m in places where the area is limited. However, it should be noted that when the above width cannot meet the maintenance requirements, it should be increased to ensure the required width for easy disassembly. 3.1.1.4 The channel dimensions of the belt conveyor trestle should comply with the provisions of 6.0.7 of the "Design Principles of Chemical Mechanized Transportation".
3.1.1.5 For the channel floor of the inclined continuous conveyor trestle, the following 62. Combustible non-conductive dust refers to dust that reacts with oxygen in the air to generate heat and burns. Such as polyethylene, phenol resin and other dusts. 2.2.2.3 Suspended and accumulated dust refers to dust that floats in the air in a cloud-like shape or may float in an accumulated shape, which has been listed as a fire hazard. 2.2.3 Any powder material that can naturally volatilize, decompose or leave flammable gas or explosive gas should be regarded as combustible dust or explosive dust during the system transportation process (or pneumatic transportation).
2.2.4 Dust ignition temperature groups are shown in Table 2.2.4.4
W.bzsoso：com Dust ignition temperature
Temperature·degree
Ignition temperature T(℃)
T≥270
200T270
150T≤200
Note: When determining the dust temperature group, the lower value of the ignition temperature of the dust cloud and the ignition temperature of the dust layer should be taken.
2.2.5 Chemical powders Explosive and combustible powder classification can be carried out in accordance with "Explosion-proof electrical equipment for explosive dust environments and dust explosion-proof electrical equipment" and "Design Code for Electric Power in Explosive and Fire Hazardous Environments of Chemical Enterprises". 2.2.6 Examples of explosive and combustible dusts are shown in Appendix D. 2.3 Classification of corrosiveness of chemical powder media
2.3.1 In engineering design, the properties of the media, the concentration of powder in the environment, and the coagulation degree of the environment should be comprehensively considered to determine the corrosion degree category of equipment, pipelines and plant buildings, and take corresponding anti-corrosion measures.
2.3.2· Dry powders and powder media with low moisture absorption have low corrosion to metals and buildings when they form aerosols; when the environmental humidity is high, the powder media absorbs a large amount of moisture and deliquesces, forming a paste or molten (melted) state, it is more corrosive to metals and buildings. The classification of the corrosion degree of chemical powder media based on scientific experiments and engineering practice summary data is shown in Appendix E.
2.3.3 The main chemical powders that cause irritation, damage or burns to human skin or mucous membranes are shown in Appendix F.
3.1.1 Requirements for operating position
Operational safety and protection
3.1 Layout design
3.1.1.1. When arranging equipment and pipelines, it should be ensured that the operator has sufficient room for movement of the head, arms, hands, legs and feet during operation, and sufficient retreat space should be left at dangerous work sites.
3.1.1.2 Where pedestrians pass, the clear height of the building shall not be less than 2.2m. If it is really difficult to arrange, it shall not be less than 2m. The safe distance between equipment and equipment, and between equipment and buildings is shown in Table 3.1.1.2. Equipment layout safe distance (m)
Item:
Small equipment
Medium equipment
Large equipment
Or production line
Small equipment
Medium equipment
Large equipment
Or production line
Note: The edge of the equipment is calculated according to the maximum range of its active parts. 3. 1. 1.3
Table 3.1.1.2
Buildings,
Walls, Columns
The width of the pedestrian passage next to the continuous conveyor shall not be less than 0.8m, and shall not be less than 0.7m in places where the area is limited. However, it should be noted that when the above width cannot meet the maintenance requirements, it should be increased to ensure the required width for easy disassembly. 3.1.1.4 The channel dimensions of the belt conveyor trestle should comply with the provisions of 6.0.7 of the "Design Principles of Chemical Mechanized Transportation".
3.1.1.5 For the channel floor of the inclined continuous conveyor trestle, the following 62. Combustible non-conductive dust refers to dust that reacts with oxygen in the air to generate heat and burns. Such as polyethylene, phenol resin and other dusts. 2.2.2.3 Suspended and accumulated dust refers to dust that floats in the air in a cloud-like shape or may float in an accumulated shape, and has been listed as a fire hazard. 2.2.3 Any powder material that can naturally volatilize, decompose or leave flammable gas or explosive gas should be regarded as combustible dust or explosive dust during the system transportation process (or pneumatic transportation).
2.2.4 Dust ignition temperature groups are shown in Table 2.2.4.4
W.bzsoso：com Dust ignition temperature
Temperature·degree
Ignition temperature T(℃)
T≥270
200T270
150T≤200
Note: When determining the dust temperature group, the lower value of the ignition temperature of the dust cloud and the ignition temperature of the dust layer should be taken.
2.2.5 Chemical powders Explosive and combustible powder classification can be carried out in accordance with "Explosion-proof electrical equipment for explosive dust environments and dust explosion-proof electrical equipment" and "Design Code for Electric Power in Explosion and Fire Hazard Environments of Chemical Enterprises". 2.2.6 Examples of explosive and combustible dusts are shown in Appendix D. 2.3 Classification of corrosiveness of chemical powder media
2.3.1 In engineering design, the properties of the media, the concentration of powder in the environment, and the coagulation degree of the environment should be comprehensively considered to determine the corrosion degree category of equipment, pipelines and plant buildings, and take corresponding anti-corrosion measures.
2.3.2· Dry powders and powder media with low moisture absorption have low corrosion to metals and buildings when they form aerosols; when the environmental humidity is high, the powder media absorbs a large amount of moisture and deliquesces, forming a paste or molten (melted) state, it is more corrosive to metals and buildings. The classification of the corrosion degree of chemical powder media based on scientific experiments and engineering practice summary data is shown in Appendix E.
2.3.3 The main chemical powders that cause irritation, damage or burns to human skin or mucous membranes are shown in Appendix F.
3.1.1 Requirements for operating position
Operational safety and protection
3.1 Layout design
3.1.1.1. When arranging equipment and pipelines, it should be ensured that the operator has sufficient room for movement of the head, arms, hands, legs and feet during operation, and sufficient retreat space should be left at dangerous work sites.
3.1.1.2 Where pedestrians pass, the clear height of the building shall not be less than 2.2m. If it is really difficult to arrange, it shall not be less than 2m. The safe distance between equipment and equipment, and between equipment and buildings is shown in Table 3.1.1.2. Equipment layout safe distance (m)
Item:
Small equipment
Medium equipment
Large equipment
Or production line
Small equipment
Medium equipment
Large equipment
Or production line
Note: The edge of the equipment is calculated according to the maximum range of its active parts. 3. 1. 1.3
Table 3.1.1.2
Buildings,
Walls, Columns
The width of the pedestrian passage next to the continuous conveyor shall not be less than 0.8m, and shall not be less than 0.7m in places where the area is limited. However, it should be noted that when the above width cannot meet the maintenance requirements, it should be increased to ensure the required width for easy disassembly. 3.1.1.4 The channel dimensions of the belt conveyor trestle should comply with the provisions of 6.0.7 of the "Design Principles of Chemical Mechanized Transportation".
3.1.1.5 For the channel floor of the inclined continuous conveyor trestle, the following 6
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