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Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Design Specification for Noise Control in Industrial Enterprises
GBJ87-85
1986 Beijing
Engineering Construction Standard Full-text Information System
W Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Design Specification for Noise Control in Industrial Enterprises
Editor Department: Beijing Municipal Commission of Infrastructure Construction Approval Department: State Planning Commission of the People's Republic of China Implementation Date ：July 1, 1986
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Notice on the Release of "Design Specifications for Noise Control in Industrial Enterprises"
Standardization [1986] No. 07
According to the requirements of the Notice No. 562 of the former State Construction Commission (78) Jianfashe, the "Design Specifications for Noise Control in Industrial Enterprises" jointly compiled by the Beijing Labor Protection Science Research Institute and relevant units has been reviewed by the National Acoustic Standardization Technical Committee and relevant departments. The "Design Specifications for Noise Control in Industrial Enterprises" GBJ87-85 is now approved as a national standard and will be implemented from July 1, 1986. The Beijing Labor Protection Science Research Institute is responsible for the specific interpretation of this specification. State Planning Commission
December 17, 1985
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Preparation Instructions
This specification is compiled by the Beijing Labor Protection Science Research Institute as the main editing unit and twelve units in accordance with the document No. 562 of the former National Capital Construction Commission (78).
During the compilation process of the specification, the compilation team conducted a wide range of investigations and tests across the country, collected relevant domestic and foreign data, and conducted necessary special tests and research on various effects of noise, and organized and implemented noise control projects in typical industries. After widely soliciting opinions from relevant units across the country, the draft was reviewed and finalized by the National Review Conference and the National Acoustic Standardization Technical Committee. This specification is divided into seven chapters and three appendices. The main contents include: noise control design standards for various locations in industrial enterprises and measures to be taken in the design to achieve these standards.
Since this specification is compiled for the first time, during the implementation process, please combine the engineering practice, carefully summarize the experience, and pay attention to accumulating data. If you find that there is a need for modification and supplementation, please send your opinions and materials to the Beijing Institute of Labor Protection Science. Beijing Capital Construction Committee
December 1985
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Chapter 1 General Provisions
Chapter 2
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Design Standard for Noise Control in Industrial Enterprises..
Chapter 3 Noise Control in the Overall Design of Industrial Enterprises.. Section 1 General Provisions
Section 2 Site Selection
Section 3
Master Plan Design
Section 4 Process, Pipeline Design and Equipment Selection c005860005
Section 5
Workshop Layout
Chapter 4
Sound Insulation Design
Section 1
Section 2
Section 3
General Provisions
Sound Insulation Sound design procedures and methods
Selection and design of sound insulation structure
Chapter 5
Soundproofing design
Section 1
Section 2
Section 3
General provisions
Soundproofing design procedures and methods
Selection and design of silencer
Chapter 6 Sound absorption design
Section 1
General provisions
Sound absorption design procedures and methods
Section 2
Section 3 Selection and design of sound-absorbing components
Chapter 7 Vibration isolation design
Section 1
General provisions
Section 2 Vibration isolation design procedures and methods
Section 3 Selection and design of vibration isolation components
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Appendix—Explanation of terms in this specification
Appendix Calculation table of allowable sound pressure level in double frequency band and estimation table of indoor sound absorption and noise reduction amount·
Appendix 3 Explanation of terms used in this specificationWww.bzxZ.net
Engineering Construction Standard Full-text Information System
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Chapter 1 General
Article 1.0.1 This specification is specially formulated to prevent the harm of industrial noise, protect the health of employees, ensure safe production and normal work, and protect the environment. Article 1.0.2 This specification applies to the noise (except pulse sound) control design of new construction, reconstruction, expansion and technical transformation projects in industrial enterprises. The noise control design of new construction, reconstruction and expansion projects must be carried out simultaneously with the design of the main project. Article 1.0.3 For the noise generated by the production process and equipment, it should be controlled from the sound source first, and low-noise processes and equipment should be used to replace high-noise processes and equipment; if it still does not meet the requirements, noise control measures such as sound insulation, sound elimination, sound absorption, vibration isolation and comprehensive control should be adopted.
Article 1.0.4 The noise control design of industrial enterprises should conduct a comprehensive analysis of production processes, operation and maintenance, and noise reduction effects, and actively adopt effective new technologies, new materials, and new methods to reduce costs, improve efficiency, and strive to obtain the best economic benefits.
Article 1.0.5 For a small number of production workshops and workplaces, if the noise level still cannot meet the noise control design standards after taking corresponding noise control measures, personal protection measures should be taken.
For such production workshops and workplaces, noise control design should be carried out based on the noise level of the workshop and the insertion loss value of the personal protective equipment adopted. Article 1.0.6 In addition to implementing the provisions of this specification, the noise control design of industrial enterprises shall also comply with the provisions of other relevant national standards and specifications in force. Engineering Construction Standards Full-text Information System
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Chapter 2
Noise Control in Industrial Enterprises
Design Standards
Article 2.0.1 The noise A sound level of various locations within the factory area of an industrial enterprise shall not exceed the noise limit values listed in Table 2.0.1 according to the different types of locations. Noise standards for various locations within industrial enterprises Sequence
Location category
Production workshops and workplaces (continuous exposure to noise for 8 hours a day)Duty rooms, observation rooms, and rest rooms (indoor background noise level) in high-noise workshops
Noise limit values
When there is no telephone communication requirement
When there is a telephone communication requirement
Precision assembly lines, precision processing workshops, work locations, computer rooms (normal working conditions) 3
4Offices belonging to workshops Room, laboratory, design room (indoor background noise level) 6
Main control room, centralized control room, communication room, telephone switchboard room, fire duty room (indoor background noise level)
Offices, conference rooms, design rooms, central laboratories (including test, test, and measurement rooms) under the factory (indoor background noise level)
Infirmary, classroom, nursing room, nursery, workers' duty dormitory (indoor background noise level) Note: ①The noise levels listed in this table should be measured and determined in accordance with the current national standards. 75
②For workers who are exposed to noise for less than 8 hours a day, the noise limit value can be determined according to the actual exposure time, and the principle of increasing the noise limit value by 3dB is used to reduce the exposure time by half. ③The indoor background noise level listed in this table is the indoor average noise level that is transmitted from the outside through walls, doors, and windows (the opening and closing conditions of doors and windows are normal conditions) when there is no sound source in the room. Article 2.0.2 The noise level A of industrial enterprises radiated from the sound source inside the factory to the factory boundary shall not exceed the noise limit values listed in Table 2.0.2 according to the different categories of adjacent areas and the different overlapping night time.
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Factory Boundary Noise Limit Value (dB)
Environmental Category of Areas Adjacent to Factory Boundary
Special Residential Area
Residential, Cultural and Educational Area
Class I Mixed Area
Commercial Center Area, Class II Mixed Area
Industrial Concentration Area
Both Sides of Traffic Trunk Roads
①The factory boundary noise level listed in this table shall be measured and determined in accordance with the current national standards. Table 2.0.2
② When there is a buffer area between the area outside the industrial enterprise that is affected by the radiation noise of the factory and the factory boundary (such as streets, farmland, water surface, forest belt, etc.), Table 2.0.2 The factory boundary noise limit values listed in the table can be used as the noise limit values for the outer edge of the buffer area. Whenever a buffer area is to be treated, the future changes in the area should be fully considered.
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
General Design of Industrial Enterprises
Noise Control in Chapter 3
Section 1 General Provisions
Article 3.1.1 The noise control design of industrial enterprises shall include: the estimation of noise environmental impact in the environmental impact report, the preparation of the noise part in the environmental protection chapter, the design of various noise control facilities in the construction drawing design, and the necessary modification and supplementary design of the parts that fail to meet the requirements of the noise control design objectives after the completion of the construction project.
When preparing the environmental impact report, the noise environmental impact of the construction project can be estimated based on the main sound source characteristics of the construction project and the noise environmental impact of similar enterprises. When conditions permit, a pre-judgment and evaluation of the noise environment of each workshop, each functional area, and even the factory boundary or living area outside the factory of an industrial enterprise can be made based on the characteristics of the sound source and the law of noise propagation attenuation.
Article 3.1.2 Noise control in the overall design of industrial enterprises should include: site selection, general layout design, process, pipeline design and equipment selection, and noise control in workshop layout.
Section 2 Site Selection
Article 3.2.1 Industrial enterprises that generate high noise should select sites in concentrated industrial areas and should not select sites in noise-sensitive areas (such as residential areas, medical areas, cultural and educational areas, etc.).
Article 3.2.2 Industrial enterprises that are sensitive to external noise should avoid selecting sites in high-noise environments based on their normal production and operation requirements, and should be away from railways, highway trunk lines, airports and major flight routes.
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Article 3.2.3 The site of an industrial enterprise that generates high noise should be located on the upwind side of the local minimum wind frequency in summer in the urban residential area: the site of an industrial enterprise that is sensitive to noise should be located on the downwind side of the local minimum wind frequency in summer around the main noise source.
Article 3.2.4 The site selection of industrial enterprises should make full use of natural buffer areas.
Section III General Layout Design
Article 3.3.1 The general layout of industrial enterprises shall comply with the following provisions, provided that the requirements of process flow and production and transportation are met: 1. In combination with functional zoning and process zoning, living areas, administrative office areas and production areas shall be arranged separately, and high-noise workshops (such as blast furnaces, air compressor stations, forging workshops, engine test benches, etc.) shall be arranged separately from low-noise workshops. The main noise sources in industrial enterprises should be relatively concentrated and should be far away from areas that require quiet inside and outside the factory.
2. Buildings and structures that are less sensitive to noise, taller, and oriented in a direction that is conducive to sound insulation should be arranged around the main noise source equipment and workshops. Auxiliary workshops, warehouses, material yards, and storage yards should be arranged between high-noise areas and low-noise areas.
3. For buildings that require quiet indoors, their orientation and height should be conducive to sound insulation.
4. Buildings such as living and administrative facilities should be arranged on both sides of traffic arteries, and they should be kept at an appropriate distance from the traffic arteries.
Article 3.3.2 The facade layout of industrial enterprises should make full use of terrain and objects to block noise. The main noise source should be arranged at a low position, and the noise-sensitive area should be arranged in the sound shadow area of the natural barrier.
Article 3.3.3 The transportation design of industrial enterprises should meet the following requirements on the premise of ensuring various functional requirements: 1. Transportation routes should not pass through densely populated areas. Engineering Construction Standard Full Text Information System
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2. When arranging roads in living areas and other noise-sensitive areas, measures such as dead-end layout should be adopted to reduce the impact of traffic noise. 3. The setting of railway stations should make full use of the surrounding buildings and structures for sound insulation. For the amplification points where horn-type loudspeakers (tweeters) are used to direct operations, the influence of the loudspeaker's directivity should also be considered, and the direction of the strongest sound should not be directed to the noise-sensitive area. Article 3.3.4 When the noise design standard cannot be met after the above measures are adopted in the general layout design of industrial enterprises, it is advisable to set up soundproof barriers or maintain necessary protective distances between various factories and buildings. Section 4 Process, pipeline design and equipment selection Article 3.4.1 The process design of industrial enterprises shall comply with the following provisions on the premise of meeting production requirements:
, reduce impact processes. Where possible, replace riveting with welding, stamping with hydraulic pressure, and pneumatic with hydraulic pressure.
, 2. Avoid large height difference and direct impact of materials during transportation. 3. Use processes that emit less high-pressure gas into the air. 4. Use equipment processes with mechanized operation (including mechanized feeding and discharging) and automated operation to achieve remote monitoring operation. Article 3.4.2 The pipeline design of industrial enterprises should correctly select the flow rate of the conveying medium in the pipeline, the pipeline cross-section should not change suddenly, and the pipeline connection should adopt the downstream direction: the valve should use low-noise products.
Flexible connections should be used when connecting pipelines to equipment with strong vibrations; rigid connections should not be used when connecting pipelines with strong vibrations to buildings, structures or supports. Pipelines that radiate strong noise should be laid underground or soundproofed or silenced.
Article 3.4.3 Equipment selection in industrial enterprise design should use equipment with low noise and less vibration. When selecting equipment with major noise sources, the noise indicators of equipment of the same type should be collected and compared.
Article 3.4.4 Equipment selection in industrial enterprise design should include noise control engineering 6 Construction Standard Full Text Information System
W.bzsoso.cOm1. The general layout of industrial enterprises, under the premise of meeting the requirements of process flow and production and transportation, shall comply with the following provisions: 1. In combination with functional zoning and process zoning, the living area, administrative office area and production area shall be arranged separately, and high-noise workshops (such as blast furnaces, air compressor stations, forging workshops, engine test benches, etc.) shall be arranged separately from low-noise workshops. The main noise sources in industrial enterprises should be relatively concentrated and should be far away from the areas where quietness is required inside and outside the factory.
2. Buildings and structures that are less sensitive to noise, taller and oriented in a direction conducive to sound insulation should be arranged around the main noise source equipment and workshops. Auxiliary workshops, warehouses, material yards, and storage yards should be arranged between high-noise areas and low-noise areas.
3. For buildings that require quietness indoors, their orientation and height should be conducive to sound insulation.
4. Buildings such as living and administrative facilities should be arranged on both sides of traffic arteries, and they should be kept at an appropriate distance from the traffic arteries.
Article 3.3.2 The facade layout of industrial enterprises should make full use of terrain and objects to block noise. The main noise source should be arranged at a low position, and the noise-sensitive area should be arranged in the sound shadow area of the natural barrier.
Article 3.3.3 The transportation design of industrial enterprises should meet the following requirements on the premise of ensuring various functional requirements: 1. Transportation routes should not pass through densely populated areas. Engineering Construction Standard Full Text Information System
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2. When arranging roads in living areas and other noise-sensitive areas, measures such as dead-end layout should be adopted to reduce the impact of traffic noise. 3. The setting of railway stations should make full use of the surrounding buildings and structures for sound insulation. For the amplification points where horn-type loudspeakers (tweeters) are used to direct operations, the influence of the loudspeaker's directivity should also be considered, and the direction of the strongest sound should not be directed to the noise-sensitive area. Article 3.3.4 When the noise design standard cannot be met after the above measures are adopted in the general layout design of industrial enterprises, it is advisable to set up soundproof barriers or maintain necessary protective distances between various factories and buildings. Section 4 Process, pipeline design and equipment selection Article 3.4.1 The process design of industrial enterprises shall comply with the following provisions on the premise of meeting production requirements:
, reduce impact processes. Where possible, replace riveting with welding, stamping with hydraulic pressure, and pneumatic with hydraulic pressure.
, 2. Avoid large height difference and direct impact of materials during transportation. 3. Use processes that emit less high-pressure gas into the air. 4. Use equipment processes with mechanized operation (including mechanized feeding and discharging) and automated operation to achieve remote monitoring operation. Article 3.4.2 The pipeline design of industrial enterprises should correctly select the flow rate of the conveying medium in the pipeline, the pipeline cross-section should not change suddenly, and the pipeline connection should adopt the downstream direction: the valve should use low-noise products.
Flexible connections should be used when connecting pipelines to equipment with strong vibrations; rigid connections should not be used when connecting pipelines with strong vibrations to buildings, structures or supports. Pipelines that radiate strong noise should be laid underground or soundproofed or silenced.
Article 3.4.3 Equipment selection in industrial enterprise design should use equipment with low noise and less vibration. When selecting equipment with major noise sources, the noise indicators of equipment of the same type should be collected and compared.
Article 3.4.4 Equipment selection in industrial enterprise design should include noise control engineering 6 Construction Standard Full Text Information System
W.bzsoso.cOm1. The general layout of industrial enterprises, under the premise of meeting the requirements of process flow and production and transportation, shall comply with the following provisions: 1. In combination with functional zoning and process zoning, the living area, administrative office area and production area shall be arranged separately, and high-noise workshops (such as blast furnaces, air compressor stations, forging workshops, engine test benches, etc.) shall be arranged separately from low-noise workshops. The main noise sources in industrial enterprises should be relatively concentrated and should be far away from the areas where quietness is required inside and outside the factory.
2. Buildings and structures that are less sensitive to noise, taller and oriented in a direction conducive to sound insulation should be arranged around the main noise source equipment and workshops. Auxiliary workshops, warehouses, material yards, and storage yards should be arranged between high-noise areas and low-noise areas.
3. For buildings that require quietness indoors, their orientation and height should be conducive to sound insulation.
4. Buildings such as living and administrative facilities should be arranged on both sides of traffic arteries, and they should be kept at an appropriate distance from the traffic arteries.
Article 3.3.2 The facade layout of industrial enterprises should make full use of terrain and objects to block noise. The main noise source should be arranged at a low position, and the noise-sensitive area should be arranged in the sound shadow area of the natural barrier.
Article 3.3.3 The transportation design of industrial enterprises should meet the following requirements on the premise of ensuring various functional requirements: 1. Transportation routes should not pass through densely populated areas. Engineering Construction Standard Full Text Information System
W. Engineering Construction Standard Full Text Information System
2. When arranging roads in living areas and other noise-sensitive areas, measures such as dead-end layout should be adopted to reduce the impact of traffic noise. 3. The setting of railway stations should make full use of the surrounding buildings and structures for sound insulation. For the amplification points where horn-type loudspeakers (tweeters) are used to direct operations, the influence of the loudspeaker's directivity should also be considered, and the direction of the strongest sound should not be directed to the noise-sensitive area. Article 3.3.4 When the noise design standard cannot be met after the above measures are adopted in the general layout design of industrial enterprises, it is advisable to set up soundproof barriers or maintain necessary protective distances between various factories and buildings. Section 4 Process, pipeline design and equipment selection Article 3.4.1 The process design of industrial enterprises shall comply with the following provisions on the premise of meeting production requirements:
, reduce impact processes. Where possible, replace riveting with welding, stamping with hydraulic pressure, and pneumatic with hydraulic pressure.
, 2. Avoid large height difference and direct impact of materials during transportation. 3. Use processes that emit less high-pressure gas into the air. 4. Use equipment processes with mechanized operation (including mechanized feeding and discharging) and automated operation to achieve remote monitoring operation. Article 3.4.2 The pipeline design of industrial enterprises should correctly select the flow rate of the conveying medium in the pipeline, the pipeline cross-section should not change suddenly, and the pipeline connection should adopt the downstream direction: the valve should use low-noise products.
Flexible connections should be used when connecting pipelines to equipment with strong vibrations; rigid connections should not be used when connecting pipelines with strong vibrations to buildings, structures or supports. Pipelines that radiate strong noise should be laid underground or soundproofed or silenced.
Article 3.4.3 Equipment selection in industrial enterprise design should use equipment with low noise and less vibration. When selecting equipment with major noise sources, the noise indicators of equipment of the same type should be collected and compared.
Article 3.4.4 Equipment selection in industrial enterprise design should include noise control engineering 6 Construction Standard Full Text Information System
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