Legal analysis: basic standards for environmental noise: stronger noise can have adverse effects on human physiology and psychology. In daily work and living environment, noise mainly causes hearing loss and interferes with conversation, thinking, rest and sleep. According to a survey conducted by the International Organization for Standardization (ISO), the likelihood of deafness after 30 years of work in an environment with a noise level of 85 decibels and 90 decibels is 8 per cent and 18 per cent, respectively. At a noise level of 70 decibels, conversation was difficult. The results of a survey of residents around the plant concluded that the noise level threshold for disturbing sleep and rest was 50 decibels during the day and 45 decibels at night.
City 5 environmental noise standard values are as follows:
Category Daytime Nighttime
Category 0 50 dB 40 dB
Category 1 55 dB 45 dB
Category 2 60 dB 50 dB
Category 3 65 dB 55 dB
Category 4 70 dB 55 dB
Categories of the standard Applicable areas:
(1) Category 0 standard applies to convalescent areas, high-class villas, high-class hotels, and other areas in particular need of quiet. Located in the suburbs and rural areas of this type of area, respectively, according to the implementation of 5 dB more stringent than the 0 class standard.
(2) 1 class standard applies to residential, cultural and educational institutions mainly in the region. Rural residential environment can refer to the implementation of this category of standards.
(3) Category 2 standards apply to residential, commercial and industrial mixed areas.
(4) Category 3 standards apply to industrial areas.
(5) Category 4 standards apply to areas on both sides of road traffic trunk roads in the city, and areas on both sides of inland waterways crossing the city. Through the urban areas of the railroad main and secondary trunk line on both sides of the area of the background noise (refers to the noise level when not passing through the train) limit values are also implemented in this category of standards.
Legal basis: "Health Standards for Noise in Industrial Enterprises"
Article 5 The noise standard at the workplace of production workshops and workplaces of industrial enterprises is 85 dB(A). When an existing industrial enterprise temporarily fails to meet the standard after efforts, it may be appropriately relaxed, but it shall not exceed 90 dB(A).
Article 6 For jobs exposed to noise for less than eight hours a day, depending on the type of enterprise and conditions, the noise standard may be relaxed accordingly to Table 1 and 2.
Article VII Industrial noise detection methods, in accordance with the "Norms for Noise Detection in Industrial Enterprises".
Article 8 For the production process and equipment that generate noise, new technology, new techniques, new equipment, new materials and mechanization, automation and confinement measures shall be adopted, and equipment and processes with low noise shall be used instead of those with strong sound, so as to root out the noise from the sound source.
Article 9 New (including the introduction of the project), expansion and reconstruction of industrial enterprises must be the control of noise facilities and the main project at the same time the design, construction, and put into operation at the same time. The competent departments must work with the industrial enterprises in the provinces, municipalities, autonomous regions, health, labor and relevant departments to rationally select the site, carefully review the design, do a good job of completion and acceptance, strict control. No health, labor departments to sign and seal, are not allowed to construction and put into operation.
Article X in the existing industrial enterprises, where the noise exceeds the provisions of this standard production workshops and workplaces, must take effective control measures to meet the requirements of this standard. Before reaching the standard, factories and mining enterprises must issue personal protective equipment to protect the health of workers.
Article XI of the machinery manufacturing sector, to improve product quality, in the product standard should be the requirements of noise health standards.