the harm of noise and vibration has a long history, and only in modern times has it attracted widespread attention. looking back on history, there were reports of noise deafness of forgers in the 18th century, but it was not until after the second world war that the number of deafness caused by gun noise increased sharply that the noise began to attract the attention of the medical community. researchers have carried out a series of research work on noise induced deafness, and many countries have successively published research reports on deafness caused by industrial noise.
with the development of modern industry and transportation, noise pollution has become more and more serious, and has become a world public hazard. it affects people's life, sleep, study, work and physical and mental health. over the years, china has taken many noise control and management measures, and the acoustic environment has been improved, but the speed of treatment lags behind the speed of pollution. with the improvement of people's material and cultural living standards and the strengthening of environmental protection awareness, noise pollution complaints are still high. according to the information provided in the 2017 report of the ministry of environmental protection on the prevention and control of environmental noise pollution in china, environmental protection departments at all levels across the country received 1.19 million environmental complaints in 2016, of which 522000 were noise complaints, accounting for 43.9% of the complaints (the completion rate was 99.1%), of which industrial noise accounted for 10.3%, construction noise accounted for 50.1% (night construction noise complaints accounted for 90.5% of such complaints), social life noise accounts for 36.6%, and transportation noise accounts for 3%. from the 1960s to 1970s, aviation noise has reached an intolerable level.
china's noise law will be formally implemented in 2022, and the supervision and management will be further strengthened. the whole society will pay more attention to the problem of noise and vibration, and china's noise and vibration control industry will usher in a new period of development.
with the implementation of the noise law and the requirements of the opinions for the implementation of noise pollution prevention and control actions, the noise pollution prevention and control action plan will be issued and implemented. the demand for noise monitoring and control equipment will increase, and the noise and vibration control industry will usher in a new period of development opportunities. noa, as a third-party comprehensive testing organization, can issue objective and true noise evaluation reports.
1.service background
noise is a kind of sound that causes people to be irritable, or the volume is too strong and endangers human health. it will also hinder people's normal rest, study and work. excessive noise will have a great impact on the quality of human life.
2.noa services
noa as a third-party testing organization, has advanced noise testing equipment, professional technical support and testing team to ensure the authenticity and accuracy of each report, so that enterprises and units can better understand the true situation of their noise emissions and avoid punishment.
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test type |
analysis parameters |
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noise and vibration |
noise and vibration |
gb12348-2008 emission standard for industrial environmental noise at boundary |
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gb 22337-2008 emission standard for community noise |
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gb12523-2011 emission standard of environment noise for boundary of construction site |
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gb 3096-2008 environmental quality standard for noise |
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3.noa advantages
1. noa the price of laboratory is preferential, and the on-site sampling must be carried out within 3 days after the customer confirms;
2. noa environmental laboratory has cma certification and cans accreditation;
3. noa environmental laboratory is a professional inspection, identification, testing and certification organization;
4. noa environmental laboratory has a wide range of qualifications to meet various needs of customers.
4.classic cases
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serial number |
customer industry |
noa services |
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1 |
large machine processing company |
boundary noise and environmental noise |
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2 |
a large chemical company |
boundary noise |
(1) interfere with rest and sleep, and affect work. the study found that only 40db~50db light noise will affect people's sleep. 40db sudden noise can wake up 10% of people, and when the sudden noise reaches 60db, 70% of people will be awakened. long term interference of environmental noise with sleep will cause insomnia, fatigue, memory loss, and even neurasthenia syndrome, which can seriously affect normal work.
(2) deafness. the impact of noise on the auditory system is related to the intensity of noise and the length of noise exposure time. noise intensity and exposure time together constitute the noise exposure dose, which determines the impact of noise on the auditory system. generally, noise below 85db will not harm hearing, while noise above 85db may damage hearing. research shows that the incidence rate of deafness is significantly increased for people who work in a noise environment of more than 90db for a long time.
(3) others. damage to the cardiovascular system, long-term exposure to noise will increase the secretion of adrenaline in the body, resulting in an increase in blood pressure. for people living in an average 70db noise environment for a long time, the incidence rate of myocardial infarction will increase by about 30%, and nighttime noise will make the incidence rate higher. the working environment with strong noise can make people dizzy, headache, insomnia, dreaminess, general fatigue, memory loss, fear, irritability, inferiority complex and even insanity. women who are disturbed by noise will also have sexual dysfunction, menstrual disorders, increased abortion rate and so on.
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email：noa@noagroup.com
