Evaluation exposure to chemicals

Assess the exposure to chemical contaminants:

Evaluate exposure to chemicals in two ways:

- 1 Environmental Assessment:

By measuring the concentration of pollutants in the air of the working environment and thus Valtqqiem deals mainly with substances that enter the body through the respiratory system as it is there are limits and standards are the reference values ​​of the concentrations allowed its presence in the work environment

First - Occupational exposure limits: TLV:
 Refer to the concentrations of chemical contaminants airborne and which is believed according to the knowledge of the current, which was built on the basis of the dynamic of exposure, the exposure of workers to fixed values ​​of them during a specific time on a daily basis and / or weekly and / or annual basis throughout the period of professional life does not constitute any effects of deterministic on most vulnerable so do not lead to adverse effects in most workers.
It should be noted here that these values ​​do not use the quantitative threshold criterion for the protection of groups of child laborers and women of reproductive age or during pregnancy and lactation, where values ​​are used specific to each class.

Chemical Risk

Chemical Risk:

Play a chemicals major role in the lives of individuals and peoples to become the well-being and progress of peoples is measured including findings of the discovery and use of chemicals in various areas of life, and use of chemicals double-edged sword, if the best use of the express facial bright and useful to mankind 00 If abused the use of these materials they reveal the ugly face that causes the destruction of human and wasting the lives of individuals as
The expansion in the production of massive amounts of chemicals and the increasing number of these chemical compounds each year is the result of industrial expansion in the world, especially the chemical industry Kalptr, chemicals, paper industry, paint and plastics, pesticides and fertilizers.

prevention of radiation sources

Safety instructions for workers for the prevention of radiation sources

1. Must be all those working in the lab aware of and familiar with the risks of radioactive materials that are dealt with.

2 - not eating, drinking and smoking in the lab.
3 - is strictly forbidden to use sucking mouth in the case of dealing with liquids containing radioactive material.
4 - Do not store any food in refrigerators or chillers for radioactive materials.
5 - You should not eat radioactive material with hands and use tongs are allocated to it.
6 - must wash hands with soap and water after work.
7 - You must use the means of detection of radiation by the laboratory staff
8 - You must install appropriate warning signs at the entrance to the lab
9 - in those regions where the level of radiation that a person exposed to 5 ms at RIM, should be placed upon the appropriate warning signs.
10 - All containers used to store radioactive materials should be placed upon the appropriate warning signs.
11 - The need to use personal protective equipment for protection against radiation hazards: gloves - sunglasses - Palatine.
12 - Do not allow anyone inside the radiation lab in case there are no wounds in his body.

Radiation

Physical hazards - radiation

   Is a type of energy and release energy (thermal, optical or electrical or atomic) in the form of waves or particles from natural sources or industrial

Radiation risk:

 Can result in any of ionizing radiation (energy input to the cells of the body) to bring about changes in the chemical balance
The cells of the body and some of these changes may lead to the atomic disorder in the liquid for humans (DNA) and thus lead to serious genetic mutations may also be passed to the children after birth. and exposure to large amounts of radiation may lead to the occurrence of disease within hours or days and may lead to death within 60 days of
exposure in cases of exposure for very large amounts of death can occur within a few hours. and symptoms of radiation injury .
Ionizing may occur over a long period, for example in cancer of the blood within two years.Result the accumulation of radioactive substances the body and most of the information on the impact of radiation on man is obtained from
Studies conducted on the survivors of the atomic bombs dropped on Nagasaki and
Hiroshima.

   

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§

Heat - Control of the temperature in work place

Physical hazards - heat

It means the rise in ambient temperature on the extent that human beings can not bear that subjects it to the many risks of death may be its final phase, and measured the amount of heat is called calorimetry unit price or a quantity of heat required to raise the temperature of kilograms of material one degree Celsius

And heat in the work environment is one of the forms of energy and can produce heat in the work environment from natural sources such as sunlight or artificial, such as furnaces and others. Where heat is exchanged between these sources and objects in ways that work into the known heat exchange (radiation - Seek - pregnancy).

Lighting

              Physical hazards – Lighting

: Light

 Is a visible part of the electromagnetic spectrum which has a sensitive eye to see things around them.

This area of ​​the spectrum lies between infrared and ultraviolet.

 And colors of the visible spectrum are: violet - blue - green - yellow - orange - red

Which was discovered by Isaac Newton the world by passing light through the prism of colors to the previous analyzes the

And increase or decrease in the intensity of illumination required for reduction affects the integrity of the eye