HG 20571-1995 Safety and Health Design Regulations for Chemical Enterprises
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Cha Qihuan
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Industry Standard of the People's Republic of China
Design Regulations for Safety and Health in Chemical Enterprises
HG 2057195
★·★
Engineering Construction Standard Editing Center of Ministry of Chemical Industry
(Building 3, Chemical Industry Compound, Chongbei Street, Heping, Beijing) Postal Code: 100013
Anhuangdao City Lulong Printing Factory
October 1995
Industry Standard of the People's Republic of China
HGI20571
Design Regulations for Safety and Health in Chemical Enterprises
Published on 19950531
China Ministry of Chemical Industry of the People's Republic of China
Document of the Ministry of Chemical Industry
Chemical Construction Development (1995) No. 397
Notice on Issuing the Chemical Industry Standard "Safety and Health Design Regulations for Chemical Enterprises"
To all provincial, autonomous region, municipality directly under the Central Government, and independently planned cities, and all relevant design units and enterprises:
The "Safety and Health Design Regulations for Chemical Enterprises" compiled by the First Design Institute entrusted by the Ministry has been reviewed and is now approved as a chemical industry standard, numbered HG 20371-95: effective from October 1995 This regulation will be implemented on January 1.
The engineering design of chemical construction projects should adhere to the principle of "safety first, prevention first" to ensure that the production construction projects meet the requirements of occupational safety and health after they are put into production. The design of all new, expanded, rebuilt and technologically modified chemical construction projects must comply with this regulation.
This regulation is funded and managed by the Ministry of Chemical Industry; the Ministry's Engineering Construction Standards Editorial Center is responsible for publishing and distributing it.
Ministry of Chemical Industry
May 31, 1995
Industry Standards of the People's Republic of China
Safety of Chemical Enterprises Full sanitation
HG20571
Main editor: Ministry of Chemical Industry,
Batch department: Chemical
Implementation date: October 1995
Ministry of Chemical Industry Engineering Design Standard Editing Center
Generally defined
. Starting from.
. Factory area general layout
2.3 Chemical equipment safety and sanitation design principles.
Labor safety
Fire prevention, explosion-proof
Anti-static
Touch protection
.....+..
Storage and transportation of hazardous chemicals
......+.
Prevention of mechanical and falling injuries
Industrial hygiene
++..+++..+.
Prevention of poison
Prevention of cooling and aging and moisture
Electronic control
Shadow radiation
Lighting
+++++++
Prevention of chemical burns
Production and living rooms
Safety colors and safety signs
Safety colors
Safety signs||tt ||Safety and health organization
Safety and health management organization and staffing
++++++++++++++++
Safety and health monitoring and protection structure
+.++.++.....+..
Gas protection station
Fire station
Medical and occupational health prevention and control organization
Safety and health education room
+++++++..
Term explanation
..++++++++.
Article explanation
1.0.! The engineering design of chemical construction projects should implement the principle of "safety first, prevention first". Occupational safety and health facilities must follow the principle of "three simultaneous" design, construction and commissioning at the same time as the main project to ensure production safety and appropriate working conditions, improve the level of labor and health, and promote the production and development of enterprises. For this purpose, these regulations are specially formulated. These regulations apply to all new, expanded, rebuilt and technologically transformed chemical construction projects. Foreign-funded, Sino-foreign joint ventures and introduced projects may adopt the corresponding foreign safety and health standards agreed by us. Safety and health requirements should be implemented in all professional designs to ensure safety, reliability and technical 1. 0. 3
Technology is advanced, economical and reasonable, and it is as safe as possible. All facilities in the engineering design
should comply with the relevant national and professional safety and health standards and specifications. A special chapter (chapter) on safety and health must be prepared in the preliminary design stage of chemical construction projects, 1.0.4
to ensure that the various measures determined by the "Safety and Health Evaluation Report 1\ and its approval opinions are implemented. The contents of the safety and health chapter (chapter) are shown in the appendix. 1.0.5 The construction drawing design of chemical construction projects shall be carried out in accordance with the contents and requirements determined by the safety and health (chapter) in the approved preliminary design documents. General provisions
Site selection
2.1.1 The site selection of chemical enterprises shall comprehensively consider the natural environment and social environment of the construction area, carefully collect basic data such as topographic survey, engineering geology, hydrology, gas industry, and regional planning of the proposed area, conduct multi-scheme demonstration and comparison, and select a construction plan that is technically reliable, economically reasonable, convenient for transportation, and meets environmental protection and safety and health requirements. 2.1.2 When selecting a site, geological factors such as earthquakes, soft foundations, collapsible loess, expansive soil, and meteorological hazards such as typhoons, thunderstorms, and sandstorms should be fully considered, and reliable technical solutions should be adopted to avoid areas with relatively developed faults, landslides, mudstone resources, and underground caves. 2.1.3 The site should not be threatened by floods, floods, and waterlogging. The elevation design of the site of chemical enterprises that may be threatened by rivers, lakes, or mountain torrents should comply with the relevant provisions of the national "Flood Control Standards" and take effective flood control and drainage measures. 2.1.4 The site should avoid new and old mineral mining areas, areas that may be flooded after the collapse of dams (or levees), areas with serious endemic diseases, and national, provincial, and municipal cultural relics protection areas, and maintain a safe distance from navigation stations, meteorological stations, sports centers, and cultural centers as specified in relevant standards or specifications.
The distance between chemical enterprises, chemical enterprises and other mining enterprises, transportation lines and stations, ports and harbors 2.1.5
should comply with safety, health and fire prevention regulations. 2.1.6 The factory of a chemical enterprise should comply with local urban and rural planning, and maintain a sufficient distance from towns, villages and factory residential areas according to the factory production type and safety and health requirements. 2.1.7 The residential areas, water sources and other facilities with high environmental quality requirements of the factory should be set up with protective distances from various harmful or dangerous places in accordance with relevant standards and specifications, and should be located in the upwind and upstream positions of nearby unclean water bodies and waste slag dumps. N
2.1.8 The factory site of a chemical enterprise must take local wind factors into consideration, and should generally be located in the upwind direction of the lowest wind direction rate in towns and factory residential areas throughout the year. 2.1.9 The specific location of the wide area should be conveniently and reasonably connected with the existing and planned local transportation lines, stations and ports. The front area of the factory should be close to the road underpass as much as possible; the railway, cableway and dock should be located behind and on the side of the factory to avoid the intersection of different types of transportation lines. 2.1.10 The residential areas of factories built in a centralized manner should not be scattered on both sides of railways or highways. The lines adjacent to residential areas should maintain the distance specified in relevant regulations. The general layout of the factory area
2.2.1 The general layout of the factory area of a chemical enterprise should be arranged with clear functions and reasonable divisions according to the production systems, safety and health requirements in the factory, and a certain amount of passages and spacing should be maintained within and between the divisions.
2.2.2 The production parts with high fire risk in the area, which emit dust, water mist and noise, should be covered in the upwind direction of the lowest wind frequency throughout the year. The front of the factory, machinery, electricity, instrumentation and main transformer and distribution parts should be located in the downwind direction of the lowest wind frequency throughout the year. The front area of the factory should face the town and the residential area of the factory.
2.2.3 The sewage treatment plant, large material yard and warehouse area should be concentrated in the edge of the factory area.
, 2.4 Chemical enterprises with a plant area of more than 50,000 square meters should have more than two entrances and exits. The flow of people and freight in large chemical plants should be clearly separated, and the transportation of bulk dangerous goods must have a separate route. It should not run or intersect with the flow of people and other freight flows. 2.2.5 The railway line group in the factory should generally be concentrated at the rear or side, avoiding extending to the front and middle parts of the factory, and minimizing the intersection with roads and pipelines. Buildings and structures along the railway must comply with the building limits and relevant clearance regulations. 2.2.6
The factory roads should be reasonably arranged according to the requirements of traffic, fire protection and zoning, and strive to be smooth. Dangerous places should be circular, and the road width should be determined according to traffic density and safety factors to ensure that fire and emergency vehicles can pass unimpeded. 2.2.6.1 Street roads should be considered for fire trucks to pass, and the distance between the center line of the road should comply with the relevant provisions of the fire protection regulations.
2.2.6.2 The buildings and structures on both sides of the road and above and below it must meet the relevant clearance and building limit requirements.
2.2.7 The places with more operators such as mechanical, electrical and instrument maintenance should be arranged near the front of the factory to avoid a large number of people frequently passing through the whole factory or chemical production equipment area. 2.2.8 The circulating water cooling tower should not be arranged near the outdoor power distribution device in the winter wind direction frequency is upwind, and should maintain the prescribed distance from the main substation, roads, railways and various buildings and structures.
Warehouses, tank areas and liquefied gas storage areas for storing Class A and Class B items should be arranged in accordance with the classification and division. 2.2.9
The storage capacity, general layout and traffic routes and other design contents should comply with the provisions of relevant specifications.
2.2.10 Newly built chemical warehouses should be designed for greening and beautification according to the nature of production, ground and above-ground facilities and environmental characteristics. The greening land coefficient should be in accordance with relevant specifications and agreed in coordination with local environmental protection departments.
Principles of safety and sanitation design of chemical equipment
Safety and sanitation design of production process must comply with the principle of man-machine engineering, so as to minimize the labor intensity and mental stress of operators. 2.3.1
New processes, technologies and equipment with no or less hazards should be used as much as possible. Outdated process equipment with serious toxic dust and difficult to control should be eliminated to make the production process itself inherently safe.
For production processes with dangerous and harmful factors, mechanization, automation and computer technology should be reasonably adopted to achieve open control or isolation operation. 2.3.4For production processes with dangerous and harmful factors, reliable monitoring instruments and meters should be designed, and necessary alarm and automatic interlocking systems should be designed. For chemical production equipment with serious accident consequences, spare devices and backup systems should be designed according to the principle of redundancy, and it should be ensured that they can automatically switch to spare devices or backup systems in case of failure.
2.3.6 Toxic and harmful waste gas, waste water (liquid) and waste residue discharged during the production process shall comply with national standards and relevant regulations.
Workers should be prevented from directly contacting equipment, facilities, production raw materials, products and intermediate products with dangerous and hazardous factors. The design of chemical equipment should be subject to safety evaluation. According to the process requirements and material properties, it should be carried out in accordance with the "General Principles for Safety and Health Design of Production Equipment" (GB5083). The design and manufacturing task section should include safety and health content. The selected general mechanical and electrical equipment should comply with national or industry technical standards.
Labor safety
Fire prevention and explosion prevention
3.1.1 The fire prevention and explosion prevention design of chemical production processes with fire and explosion hazards shall comply with the "Petrochemical Enterprise Design Fire Prevention Code" (GB50160) and the "Building Design Fire Prevention Code" (GBI16) and other standards. The design of electrical equipment in fire and explosion hazardous places shall comply with the "Design Code for Electric Power Installations in Explosive and Fire Hazardous Environments" (GB50058): 3.1.2 Process production equipment, equipment, and pipelines with flammable and explosive properties should be centrally arranged according to production characteristics, while meeting production requirements, and adopt open-air, scattered or semi-scattered buildings (structures).
3.1.3 The fire protection distance between equipment, pipelines, buildings (structures) in chemical production equipment shall comply with the provisions of GB50160 and GBJ16. 3.1.4 Open flame equipment should be concentrated at the edge of the device, away from the production equipment and storage of flammable gases and flammable and explosive substances, and should be arranged upwind of such equipment. Closed workplaces with flammable gas and dust leakage must be designed with a good ventilation system to ensure that the concentration of hazardous substances in the workplace does not exceed the relevant regulations, and necessary detection and automatic alarm devices must be designed. 3.1.6 The structural form and selected materials of buildings (structures) in fire and explosion hazard testing sites must meet the requirements of fire prevention and explosion prevention. 3.1.7 For processes, storage tanks and pipelines with fire and explosion hazards, nitrogen, carbon dioxide, steam, water and other media replacement and protection systems should be selected according to the characteristics of the media. 3.1.8 The explosion and fire hazardous environment areas should be clearly delineated in the chemical production unit area, and the corresponding instruments and electrical equipment should be designed and selected. 3.1.9 All open-air equipment, facilities and buildings (structures) of chemical production units shall have reliable lightning protection measures, and the design of lightning protection systems shall comply with Section 3.3 and other relevant standards and specifications.
3.1.10 The design of production equipment and pipelines shall select appropriate materials according to the characteristics of the production process and the properties of the materials. The design, manufacture, installation and pressure testing of equipment and pipelines shall comply with national standards and relevant specifications.
3.1.11 Production equipment and pipelines with fire and explosion hazards shall be designed with explosion-proof pressure relief systems such as safety valves and bursting plates. Flame arresters, water seals and other fire-retardant facilities shall be installed between vent pipes and pipelines that carry flammable materials and may cause flame spread. Fire walls and safe passages must be designed for dangerous workplaces. There should be no less than two exits and entrances. Doors and windows should be opened outwards, and passages and entrances and exits should be kept unobstructed. 3.1.13 Fire protection system
3.1.13.1 The fire protection design of chemical plants must be determined according to the characteristics of the process and the degree of fire hazard, the nature of materials, and the building structure. 3.1.13.2 The low-pressure fire water supply facilities and fire water supply of chemical enterprises should be combined with the production or living water supply pipeline system. An independent fire water supply pipeline system should be designed for high-pressure fire water supply. Fire water supply pipelines should generally adopt a ring network. 3.1.13.3 The water fire protection design of chemical production equipment should design corresponding fire water supply risers, cooling sprays, fire water curtains, water guns with stands and other fire protection facilities according to the equipment layout, plant area and the degree of fire hazard.
3.1.13.4 Chemical production equipment, tank area, chemical warehouse should be designed with corresponding foam fire and inert gas fire extinguishing facilities according to the characteristics of the production process, the nature of the materials and the nature of the fire hazard.
3.1.13.5 In addition to fixed and semi-circular fixed fire extinguishing facilities, chemical production equipment area, storage area and warehouse should also be equipped with small fire extinguishing equipment according to regulations. 3.1.13.6 Key chemical production equipment, computer room, control room, substation, flammable material warehouse, oil depot should be equipped with automatic fire alarm and fire extinguishing facilities. 3.2 Anti-static
3.2.1 The anti-static design of chemical equipment should comply with the provisions of the General Guidelines for Preventing Electrostatic Accidents (GB12518) and the Technical Regulations for Electrostatic Grounding Design of Chemical Enterprises (HGJ28).
3.2.2 The anti-static design of chemical equipment should take corresponding anti-static measures according to the production process requirements, the characteristics of the working environment and the nature of the materials. 3.2.3 The anti-static design of chemical equipment should reasonably select process conditions, materials of equipment and pipelines, and equipment structure according to production characteristics and material properties to control the generation of static electricity so that it cannot reach a dangerous level. 3.2.4 All metal equipment, pipelines, storage tanks, etc. in the explosion-proof area of chemical production equipment must be designed with static grounding. Metal bodies that are insulated from the ground are not allowed in equipment and internal parts of the equipment.
Non-conductive equipment, pipelines, storage tanks, etc. should be designed with grounding, or static shielding methods should be used, and the shield body must be reliably grounded.
In places with fire and explosion hazards, production processes where static electricity affects product quality, and work areas where static electricity endangers personal safety, all metal utensils and door and window parts, mobile metal vehicles, ladders, etc. should be designed with grounding. 3.2.6 According to the static sequence table, select raw material formulas and materials to be used, so that the friction or contacting substances are close in the sequence table to reduce static electricity generation. 3.2.7 The production process design of non-conductors such as rubber, plastics, fibers, films, paper, powders, etc. should be designed according to the process characteristics, working environment and non-conductor properties. When the measures of eliminating static electricity are adopted by air humidification and reducing the insulation performance of hydrophilic non-conductors, the relative humidity of the air in the working environment should be kept above 50%. When antistatic additives are used to increase the hygroscopicity or ionization of non-conductor materials to eliminate static electricity, the selection should be based on the use object, purpose, material process status, cost, toxicity, corrosiveness and other conditions. Personal anti-static protective equipment should be provided for workplaces that may cause static hazards. Human body static elimination devices should be designed at the entrances of key fire prevention and explosion prevention work areas. 3.2.11
Chemical construction projects should be equipped with necessary electrostatic detection instruments and meters according to production characteristics.
3.3. 1 Chemical plants, equipment, facilities, storage tanks and buildings (structures) should be designed with reliable lightning protection devices to prevent the harm and damage of lightning to people, equipment and buildings (structures). Lightning protection design should comply with national standards and relevant regulations. 3.3.2 The lightning protection design of chemical production equipment should be designed according to the nature of production, environmental characteristics and the type of protected facilities. Chemical equipment, open-air equipment, storage tanks, electrical facilities and buildings (structures) with fire and explosion hazards should be designed with direct lightning protection devices. The lightning protection design of exhaust pipes with flammable and explosive gas production equipment and storage and discharge of flammable and explosive gases should be higher than the explosion hazard range formed when the gas is discharged under normal accident conditions. Metal pipes arranged in parallel with a spacing of less than 100mm or metal pipes with a crossing distance of less than 100mm should be designed with lightning protection induction devices, which can be set together with anti-static devices. Overhead pipelines of chemical equipment, power distribution equipment and low-voltage power supply line terminals should be designed with protection measures against lightning wave intrusion. 3.4 Electric shock protectionbZxz.net
3.4.1 The exposed conductive parts of distribution devices and electrical equipment that are not normally energized but may be energized in the event of an accident should be designed with reliable grounding devices in accordance with the requirements of the "Grounding Design Code for Industrial and Civil Power Installations" (GBJ65). 3.4.2 Mobile electrical equipment should use electric protection devices. 3.4.3 Wherever safe voltage is required, safe voltage should be used. The safe voltage standard should be in accordance with the "Safety Voltage" (GB3805). Storage and transportation of hazardous chemicals
3.5.1 Storage
3.5.1.1 The storage design of hazardous chemicals in chemical enterprises must comply with national standards and relevant regulations.
3.5.1.2 The storage design of hazardous chemicals should be based on the nature, hazard level and storage volume of the chemicals, and professional warehouses and tank storage areas (places) should be set up. The storage method, warehouse structure and site selection should be determined based on production needs and the fire hazard characteristics of the stored items. Warehouses, tank areas and storage areas for hazardous chemicals should be designed according to the nature of the hazardous chemicals. 1.3
Design corresponding fire prevention, explosion prevention, corrosion prevention, pressure relief, ventilation, temperature adjustment, moisture prevention, rain prevention and other facilities: and should be equipped with communication alarm devices and protective items for staff. The fire protection design of chemical hazardous goods warehouses should comply with the provisions of Article 3.1.13. 3.5.1.4
The design of chemical hazardous goods warehouses must strictly implement the dangerous goods configuration regulations. They should be stored according to chemical properties and fire hazards. Chemical hazardous goods with conflicting properties or different fire protection requirements should be stored separately. 3.5.1.6·Special warehouses should be designed for the storage of radioactive materials. 3.5.2 Loading and unloading transportation
Loading and transporting chemical hazardous goods such as highly toxic and flammable liquids and combustible gases: 3.5, 2. 1
Specialized transportation tools should be used.
3.5.2.2 Transportation routes, transfer stations and docks for hazardous chemicals should be located in suburbs or far away from urban areas.
3.5.2.3 The loading and unloading of hazardous chemicals should be equipped with special tools and electrical equipment for special loading and unloading tools, which should meet the requirements of fire prevention and explosion prevention. 3.5.3 Packaging of hazardous chemicals
3.5.3.1 According to the characteristics of chemicals and the mode of transportation, containers, packaging materials and packaging cushions should be correctly selected to adapt to the corrosion, collision, extrusion and changes in the transportation environment during storage and transportation.
3.5.3.2 Chemical packaging should be marked with the name, brand, production and storage date of the item. Dangerous or harmful chemicals must be accompanied by a certificate of conformity, an immediate mark and packaging that complies with regulations.
3.5.3.3 The filling of flammable and combustible liquids, compressed flammable and flammable gases, and hazardous and harmful liquids should be done in open or semi-open buildings according to the nature of the materials and the degree of hazard. The design of filling facilities should comply with relevant fire prevention, explosion prevention and anti-toxic requirements. 3.5.3.4 The loading and unloading of toxic and harmful liquids should adopt closed operation technology, strengthen the ventilation of the workplace, and configure local ventilation and purification systems and residual liquid recovery systems. Prevention of mechanical and falling accidents
When there are operating positions with the risk of falling in the chemical plant, the auxiliary facilities such as ladders, platforms, and pottery railings that are convenient for operation, inspection and maintenance should be designed according to regulations. The design of escalator platforms and railings shall comply with the provisions of "Zhou Ding Steel Straight Ladder" (GB4053.1), "Fixed Steel Inclined Ladder" (GB4053.2), "Fixed Industrial Guardrail" (GB4053.3) "Fixed Industrial Steel Platform" (GB4053.4). 3.6.2 Mechanical parts that rotate or reciprocate at high speeds shall be designed with reliable protective facilities, baffles or safety fences.
3.6.3 Transmission and transportation equipment and belt conveyor lines shall be designed with safe 11
walkways and crossings with railings in accordance with regulations.
3.6.4 The necessary safety factor shall be considered when designing hooks, beams, etc. for installing and repairing equipment or transporting materials buried in buildings (structures), and the necessary safety factors shall be placed in a conspicuous place. The maximum load allowed shall be marked at the place.
3.6.5 The tops of tall equipment, chimneys or other buildings (structures) shall be designed with red sign lights in accordance with relevant regulations.
Industrial Hygiene
Dust and Poison Prevention
4.1.1 Equipment and pipelines in production facilities with serious dust and toxic hazards shall be centrally arranged in semi-enclosed or fully enclosed buildings (structures) under the condition of meeting the production process requirements, and a reasonable ventilation system shall be designed. The ventilation conditions of buildings (structures) shall ensure that the concentration of harmful substances such as toxic dust in the working environment air does not exceed national standards and relevant regulations, and comprehensive measures such as sealing and negative pressure shall be taken. In the production process, for production processes that may escape dust-containing gases, 4. 1. 2
The operation should be automated and reliable exhaust and purification equipment should be designed to ensure that the working environment and the concentration of harmful substances discharged meet national standards and relevant regulations. For production processes and equipment with serious toxic hazards, reliable accident handling equipment and emergency protection measures must be designed.
In working environments with toxic hazards, necessary sanitary protection facilities such as showers and eyewashes should be designed, and their service radius should be less than 15m. Accident cabinets, first aid kits and personal protective equipment should be configured according to the characteristics of the operation and protection requirements. The walls, ceilings and 4.1. 5
The ground should be smooth and easy to clean. If necessary, special protective layers such as waterproof and anti-corrosion and special cleaning facilities should be designed.
Heat-blocking and cold-proof and moisture-proof
The heat-blocking design of chemical equipment should comply with the "Industrial Enterprise Design Hygiene Standard" (TJ36).
4.2.2 The heat source of chemical production equipment should be arranged in a centralized open-air layout when production conditions are met. For heat sources in closed workshops, they should be centrally arranged under skylights. Or arranged downwind of the prevailing wind direction in summer.
4.2.3 Effective insulation measures should be taken for various furnaces, equipment and pipelines that emit heat in the chemical equipment cover. The insulation design of equipment and pipelines should comply with the "Technical Code for Thermal Insulation of Equipment and Pipelines" (GB4272).
4.2.4 Closed workshops that generate a lot of heat should make full use of natural ventilation and cooling. If necessary, exhaust and air supply cooling facilities can be designed. The exhaust and air supply cooling system can be designed together with the dust and toxic exhaust system.
High-temperature working points can adopt high-level ventilation and cooling measures. Important high-temperature working operation rooms and central control rooms should be designed with air conditioning devices. 4. 2. 5
Large and medium-sized chemical construction projects should be designed with cool beverage stations. In severe cold areas, to prevent the workshop door from being attacked by cold air due to long-term or frequent opening, door vestibules, outer rooms or hot air curtains should be set up. 4.2.8 The enclosure structure of the workshop should prevent rainwater from penetrating, and the inner surface should prevent condensation. For workshops with high water consumption and high moisture production, drainage and moisture prevention facilities should be adopted to prevent water from seeping from the ceiling and accumulating on the ground.
Noise and vibration control
4.3.1 The design of chemical construction projects and the noise control standards of the factory area should comply with the "Noise Control Design Code for Chemical Enterprises" (GBI87).
4.3.2 The noise (or vibration) control design of chemical construction projects should be based on the production process. Based on the characteristics of the process and the nature of the equipment, comprehensive prevention and control measures shall be taken, and new processes, new technologies, new equipment and mechanization, automation and sealing of the production process shall be adopted to achieve remote or isolated operation. 4.3.3 Under the premise of meeting the requirements of production, the general layout shall be reasonably planned in combination with acoustic factors. It is advisable to separate the high noise area from the low noise area, keep the noise pollution area away from the living area, and make full use of natural barriers such as terrain, landforms, buildings (structures) to block the spread of noise (or vibration).
4.3.4. All types of mechanical equipment selected in chemical design should have noise (and vibration if necessary) indicators. Low-noise mechanical equipment should be selected in the design. For noise sources that exceed the standard for a single machine, effective prevention and control measures should be taken according to the characteristics of the noise source in the design to make the noise (and vibration) meet national standards and relevant regulations.
4.3.5 In chemical design, when mechanical equipment causes solid sound transmission and vibration radiation noise due to strong vibration or impact, or when vibration affects and interferes with personnel, mechanical equipment operation and the surrounding environment, vibration prevention and vibration isolation design should be adopted. 4.3.6 Operators working in high-noise operation areas must be equipped with necessary personal noise protection equipment, and soundproof operation cases should be set up when necessary. Radiation protection
4.4.1 Chemical production processes with ionizing radiation effects must be designed with reliable protection measures, and ionizing radiation protection design should comply with the provisions of the Basic Standard for Radioactive Health Protection (GB4792).
4.4.2. The protection design for non-ionizing radiation such as high frequency, microwave, laser, ultraviolet, infrared, etc. shall comply with the corresponding national standards and relevant regulations. 4.4.3 The design of chemical equipment shall reasonably arrange the radiation source according to the nature of the radiation source and the degree of hazard. Necessary protection distance shall be set between the radiation operation area and the living area. 4.4.4 The design of chemical equipment shall take corresponding measures to shield the radiation source according to the nature of the radiation source and design a shielding room, shielding wall or isolation area when necessary. 4.4.5 For closed radiation sources, effective protection measures shall be taken according to the dose intensity, irradiation time and distance from the irradiation source. 4.4.6 For internal radiation in the production process, the production process shall be closed, and reliable monitoring instruments, automatic alarm and automatic interlocking systems shall be designed to realize automation and remote operation. 4.4.7 Special containers and transportation vehicles shall be designed for radioactive materials and wastes and shall be transported within the specified 15
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