TAILIEUCHUNG - Safety at Work 6 E Part 10

Tham khảo tài liệu 'safety at work 6 e part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Occupational hygiene 515 Personal hygiene and good housekeeping Both have an important role in the protection of the health of people at work. Laid down procedures are necessary for preventing the spread of contamination for example the immediate clean-up of spillages safe disposal of waste and the regular cleaning of work stations. Dust exposures can often be greatly reduced by the application of water or other suitable liquid close to the source of the dust. Thorough wetting of dust on floors before sweeping will also reduce dust levels. Adequate washing and eating facilities should be provided with instruction for workers on the hygiene measures they should take to prevent the spread of contamination. The use of lead at work is a case where this is particularly important. Wide ranging regulations13 and a related guidance booklet14 dealing with workplace health safety and welfare require that workplaces are kept sufficiently clean and that waste materials are kept under control. These objectives also apply when considering other control measures. Reduced time exposure Reducing the time of exposure to an environmental agent is a control strategy which has been used. The dose of contaminant received by a person is generally related to the level of stress and the length of time the person is exposed. A noise standard for maximum exposure of people at work of 90dB A over an 8-hour work day has been used for several years and is now contained in the Noise at Work Regulations 198915 as the second action level . Equivalent doses of noise energy are 93 dB A for 4 hours 96dB A for 2 hours etc. ThedB A scale is logarithmic. Such limiting of hours has been used as a control strategy but does not take into account the possibly harmful effect of dose rate . very high noise levels over a very short time even though followed by a long period of relatively low levels. Personal protection Making the workplace safe should be the first consideration but .

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