Basic Electrical Installation Work

| Kategorie: Kniha  |

Strana 24 z 399

Jak získat tento dokument?






Poznámky redaktora
Noise accepted problem most industries and surprisingly there has been very little control legislation.The legal responsibilities both employers and employees 13 PPE used particular area. These may disposable ear plugs, reusable ear plugs ear muffs. If the distance only 1m, the noise level about 90dB. Continuous noise at work causes deafness, makes people irritable, affects concentration, causes fatigue and accident proneness and may mask sounds which need to heard order work efficiently and safely. It may possible engineer out some the noise, for example plac- ing generator separate sound-proofed building. person has shout understood 2m, the background noise about 85dB. Typical methods of protection include helmets, light duty scalp protectors called ‘bump caps’ and hairnets. Working with VDUs (visual display units) can cause eye strain and fatigue and, therefore, this hazard is the subject separate section the beginning Chapter headed ‘VDU operation hazards’. Safety First PPE Always wear use the PPE (personal protective equipment) provided by your employer for your safety. Types eye protectors include safety spectacles, safety goggles and face shields. Other hazards include striking the head against pro- jections and hair becoming entangled machinery. The eyes are very vulnerable liquid splashes, flying particles and light emissions such ultraviolet light, electric arcs and lasers. Alternatively, may be possible provide job rotation, rearrange work locations provide acoustic refuges. The vulnerable parts the body which may need protection are the head, eyes, ears, lungs, torso, hands and feet and, additionally, protection from falls may need considered. The chosen ear protector must suited the user and suitable for the type noise and individual personnel should trained in its correct use. Screen-based workstations are being used increasingly industrial and commercial locations all types personnel. The usual basis for measuring noise sound level the decibel scale. Some industrial processes produce dust which may present . Objects falling from height present the major hazard against which head pro- tection provided. This the basis the widely accepted limit of 85dB continuous exposure noise for 8hours per day. Noise may defined any disagreeable undesirable sound sounds, generally random nature, which not have clearly defined frequen- cies. Breathing reasonably clean air the right every individual, particu- larly work. The Health and Safety Executive have published ‘Code Practice’ and ‘Guidance Notes’ HSG for reduc- ing the exposure employed persons noise. A peak sound pressure above 200pascals about 120dB considered unacceptable and 130dB the threshold pain for humans. continuous exposure limit of below 85dB for 8-hour working day recommended the code. Where individuals must subjected some noise work, may be reduced ear protectors. Whether noise particular level harmful not also depends on the length exposure it