Noise hazard and protection It is known from the field investigation and inspection that the main noise sources in the Spring production process are the noise generated by winding, chamfering, shot peening, grinding, and standing equipment. 69.2% of the noise detection results exceed the standard, and some noise contact operations Workers' occupational health check results have early hazard performance, indicating that the noise hazard of the spring production process is more prominent. Since the production plant is a large combined factory, there is no physical separation between the operations. When winding, chamfering, shot blasting, grinding, and setting operations, it can have a significant impact on other low-noise jobs. Dust hazard and protective spring winding, chamfering, shot peening, grinding and other positions can be exposed to dust. A small amount of metal dust can be produced during the winding process. The dust generated by chamfering, shot peening and grinding process is more, but by setting A partial dust hood and a closed hood with a suction device are used for dust removal. If the local exhaust hood and the closed hood are insufficiently ventilated or the exhaust duct is blocked, the dust generated may not be exhausted in time, which may cause local dust accumulation and the concentration exceeds the standard, thereby jeopardizing the health of the workers. Chemical Toxic Hazards and Protection When the color marking and marking of springs are applied, a small amount of benzene, toluene and xylene can be contacted. From the process analysis, the amount of paint used for coloring and marking is small, and a partial exhaust hood is provided for exhausting air. The on-site detection of benzene, toluene and xylene was lower than the exposure limit. High-temperature hazard and protective spring tempering posts can be exposed to high temperatures. It is found on the site that a closed hood with exhausting facilities is used to extract hot air, but the closed hood is not insulated. The high-temperature test results in summer are above the WBGT limit. Therefore, the hermetic cover of the tempering equipment should be insulated to reduce heat radiation. Ultraviolet radiation hazard and protective spring flaw detection process can be exposed to ultraviolet radiation. On-site observation window is not provided with protection. Ultraviolet radiation detection exceeds the occupational exposure limit of medium-wave ultraviolet light for 8 hours. Occupational health check found 3 cases of occupational contraindications. It shows that there is a certain degree of ultraviolet radiation hazard in the flaw detection station.
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