cold, humidity, ventilation

 Cold

 Intended to decrease in temperature to the extent that affects the rights in the work environment and exposes him to the inability to perform its vital functions properly and is exposed to the risk of death may be the end

:Work where workers are exposed to the harmful effects of cold are

- Work in refrigerators, ice plants and ice cream and other cold areas

- In cold areas such as the Arctic

:The effects of low temperatures

 turbulence in the nervous and Uaaúah Parties§

 Cold shock: When you login to a very cool place, which may lead to muscle cramps§

 There are chronic diseases such as colds and other Shaath§

:Symptoms experienced by workers when exposed to high degrees of cold

 pale color and adverse effects on the fingers and the parties§

 disorder in blood circulation and a sharp fall in heart§

:Principles of control of the cold (prevention)

Where that work areas are the areas of cold work can not be forced to increase the     temperature in refrigerators so we resort to

 provide appropriate protective clothing for the workplace (wear protective clothing from the cold)§

 secure rooms and rooms intermediate between low temperature and the outside air§

 be Albaradh rooms with locks easy to open from the inside§

 securing slots surveillance to monitor the workers inside the cold room§

 Workers dimensions of patients with heart disease from working in cold areas§

 workers to give warm fluids to raise the body temperature§

 He was taken to a warm place and the work of his first-aid§

 humidity

Humidity may be a key factor in some industries such as refrigerators, refreshments and cooling business, as well as industries that contain sources of heat and heating .. etc.

The high humidity in the work environment, especially when the evidence of temperatures impede the rights to do his work and he felt tired and fatigue rapidly as a result of high internal heat of the body and not to evaporation of sweat from the skin surface and this is known as shock thermal (see table below) and also spoke of excess moisture diseases respiratory and rheumatic pain and neurological and as a result of increased air humidity or wetness of the body or clothing

Temperature relative humidity effects

2140 complete comfort

75 work with difficulty

85 feeling of stress

91 fatigue and discomfort

2465 discomfort

80 extreme fatigue

100 impossible to carry out difficult

3025 work without fatigue

50 work as possible

80 rise in body temperature

Methods of prevention:

 For the atmospheric humidity is ascertained that the rate in the air do not exceed the limits required by the industry§

 For the moisture arising from the wetness is disposed of by getting rid of fluids and can also reduce the strength to provide workers with clothing impermeable to fluids, gloves, clothing and footwear made of rubber§

 You must provide proper ventilation in the workplace, whether natural or artificial§

 prevent the exodus of workers from the atmosphere very cold air to the outside, where the great difference in temperature§

 Non-employment of workers with a lack of blood circulation in the limbs where they are more vulnerable to infection than others.§

 Ventilation

To remove high concentrations of harmful air pollutants in the workplace resulting from thermal sources, equipment and electrical appliances as well as various production processes, metal, etc. .... the smell of sweat, they often need large volumes of air. This requires research on effective measures and at the lowest possible cost

The excess heat, gases and vapors and dust rising into the atmosphere of the causes of pollution of the work environment. The amount of these pollutants depends on the evolution of the production process and means of production used, with less pollution these processes and the development of means of production.

Types of ventilation:

Determine the type of ventilation required for any industrial site depends on the type and location of the production process and the amount of pollution. Note that it is possible to use all types of ventilation in any production site.

. Natural ventilation-

 Ventilation topical (suction, pumping air)-

Natural ventilation are the best types of ventilation, usually through the windows and vents that are designed for the construction of walls and ceilings, where taken into account when designing the weather (climate) to perform the intended purpose of which the highest efficiency

In natural ventilation exploit the momentum of the air resulting from the different weights of quality of the air hot and cold as well as the momentum of the wind in the access to large volumes of air through the natural, which provides mechanical energy and for the exchange of air very effectively be provided with building the right amount of windows and openings Special ventilation.

Topical ventilation system suction: This vacuum ventilation on the basis of pollutants from the source of contamination directly over before they spread in the air and mixing with the rest of the air and pollution, which saves us huge amounts of pure Hawa, so they are an economical way

Suction equipment is in place above and below the source of contamination or from the sides, where the suction vapors and gases carrying the weight of air by suction from above source, vapors and gases that increase the weight of air by suction from the bottom.

Localized ventilation - air pump system: In cases that differ by the climatic conditions in one of the parts of the room from the rest of climatic conditions across the room to be ventilated. This type of ventilation. There are several types of this system, there Aladdchac air curtains and air and the roof antenna ... etc..