I. Noise
Health hazards: hearing will be weakened, which can cause permanent deafness for a long time, and lead to indigestion, vomiting, headache, elevated blood pressure, insomnia and other systemic diseases.
Physical and chemical characteristics: sound intensity, frequency is irregular and chaotic.
Emergency treatment: use sound insulation devices such as earplugs, earmuffs and sound insulation caps. If you find abnormal hearing, go to the hospital for examination and diagnosis.
Second, high temperature.
Health hazards: it not only affects physiological functions such as body temperature regulation, water and salt metabolism, but also leads to heatstroke diseases, such as heatstroke, heat spasm and heat exhaustion.
Physical and chemical properties: thermal radiation
First aid: move the patient to a cool and ventilated place, pad his head, unbutton his clothes, cover his head with towels or ice cubes, tuck his nest in, and send him to the hospital in time.
Extended data:
Precautions for electrician's safe operation:
The insulation performance, mechanical strength, material structure and size of special tools for electrical safety shall conform to the regulations, be properly kept, and it is forbidden to use them for other purposes, and should be checked and calibrated regularly. Before work, carefully check whether the tools used are safe and reliable, and wear necessary protective equipment to prevent accidents at work.
At the construction site, there must be more than two people before operation. Electrical operators should concentrate their thoughts, and all electrical lines should be regarded as "live" until it is determined that there is no electricity with a test pen. They can't touch with their hands, and they can't trust insulators absolutely, so they should be regarded as live.
The use of all kinds of electric tools shall comply with the Safety Technical Specification for Management, Use, Inspection and Maintenance of Hand-held Electric Tools (GB 3787) and its annexes and the provisions of small and medium-sized construction tools.