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
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.
Secondly - derived limits:
A - rate of long-term exposure (TWE)
Used to assess the exposures are not fixed focus during the eight-hour day or forty hours a week. And allows the application of this limit the possibility of exposure to concentrations exceeding the values amount to no more than average concentration of the limit set threshold of exposure, ie, while retaining the effect of dose equivalent to the dose defined in this limit.
Since it can not leave the field of the increase in the concentration of pollutants is open, given the presence of substances with immediate effects upon the arrival of the focus to the specified level, it has been determined up to the other.
B. Rate of short-term exposure (STEL)
Refers to the concentration of pollutant which can be exposed for a quarter of working hours without adverse effects or dangerous, such as:
o effects of irritant or narcotic enough
o - lack the ability to non-performance of work activities
o - a chronic tissue destruction
Must not be repeated this type of exposure more than four times an hour interval between each consecutive Tardan.
2 - Evaluation of:
acquire the Evaluation of great importance in the assessment of exposure to chemicals and early detection of any defect healthy, especially as it deals with all forms of entry of toxic substances to the human body and includes the evaluation is vital to do analyzes vital for workers exposed to chemical contaminants to determine the total amount absorbed from toxic chemicals, or to determine response§ body as a result of exposure to these materials and tests are classified into two groups vital
A - direct exposure tests:§
These tests measure the concentrations of toxic substances or Mstqlebattha in samples such as blood, exhaled air, urine, feces, hair, ....
B - tests was indirectly:
Is carried out through these tests estimate the response of organic contaminated any particular body Kmvzz porphyrin as a result of toxic exposure to lead.
Help these tests vital in terms of identifying the relationship between exposure and the content of the body and Excretion, where you specify whether the amount of uptake of the toxin is less than the amount capable of causing danger of health, and if the reaction of the body is within acceptable limits, and based this analysis vital to good knowledge of Bastqlab toxic substances and the mechanism of influence.
Methods of exposure to chemicals:
Can enter the chemicals to the human body through four routes are:
- 1 inhalation: a common pathway in the most important occupational exposure. And materials include inhaled gases and vapors, dusts and fumes. Absorption is associated with physical and chemical properties of contaminated and physiological structure of the respiratory system
- 2 absorption through the skin and in-kind: the second most common route of occupational exposure.
Although the skin is a defensive barrier but there are some materials that you can access through the skin, eyes, and access to the circulatory system (such as shops. (And there are factors that help to increase the absorption, such as high fever and skin lesions.
- 3 swallowing and chemicals are entering care of the way to the digestive system due to: lack of hygiene or personal.
As a result of ingestion of inhaled materials.
- 4 wrong injection by infection with a sharp object contaminated with hazardous chemicals.
However, there is a difference rate of absorption of pollutants into the body between individuals by:
Age sex fitness inheritance.
As well as the absorption rate of pollutants is different depending on the climate or physical effort in the work environment
As dependent degree of exposure to dangerous chemicals on the type of material and the degree of focus of this article, and the duration of exposure
Safety rules in storing chemicals:
A - must be available in the storage areas the following specifications:
- Be built of appropriate materials in accordance with the purpose of the stomach for it.
- To provide adequate ventilation system if necessary.
- Favorable climatic conditions.
- The appropriate protective measures against fire, especially when storing flammable materials with the availability of fire alarms and appropriate.
- Hygiene and sources of heavy water for use in emergency exposure conditions.
B - Do not store chemicals in the places they are used or stored materials are to interact with it.
C - you must save the packages very hazardous chemicals outside of normal trading area.
D - should be cleaned all the blood, and destruction of explosive contaminated by hazardous and toxic immediate and reliable.
E - must be available in containers of chemicals keeping the following conditions:
- To be made of appropriate material (non-breakable, Gbr capable of reacting with the material ... etc. (
- To be sealed to prevent leakage of chemicals.
- Numbering and classification and definition of each package is stored permanently and understandable.
A - rate of long-term exposure (TWE)
Used to assess the exposures are not fixed focus during the eight-hour day or forty hours a week. And allows the application of this limit the possibility of exposure to concentrations exceeding the values amount to no more than average concentration of the limit set threshold of exposure, ie, while retaining the effect of dose equivalent to the dose defined in this limit.
Since it can not leave the field of the increase in the concentration of pollutants is open, given the presence of substances with immediate effects upon the arrival of the focus to the specified level, it has been determined up to the other.
B. Rate of short-term exposure (STEL)
Refers to the concentration of pollutant which can be exposed for a quarter of working hours without adverse effects or dangerous, such as:
o effects of irritant or narcotic enough
o - lack the ability to non-performance of work activities
o - a chronic tissue destruction
Must not be repeated this type of exposure more than four times an hour interval between each consecutive Tardan.
2 - Evaluation of:
acquire the Evaluation of great importance in the assessment of exposure to chemicals and early detection of any defect healthy, especially as it deals with all forms of entry of toxic substances to the human body and includes the evaluation is vital to do analyzes vital for workers exposed to chemical contaminants to determine the total amount absorbed from toxic chemicals, or to determine response§ body as a result of exposure to these materials and tests are classified into two groups vital
A - direct exposure tests:§
These tests measure the concentrations of toxic substances or Mstqlebattha in samples such as blood, exhaled air, urine, feces, hair, ....
B - tests was indirectly:
Is carried out through these tests estimate the response of organic contaminated any particular body Kmvzz porphyrin as a result of toxic exposure to lead.
Help these tests vital in terms of identifying the relationship between exposure and the content of the body and Excretion, where you specify whether the amount of uptake of the toxin is less than the amount capable of causing danger of health, and if the reaction of the body is within acceptable limits, and based this analysis vital to good knowledge of Bastqlab toxic substances and the mechanism of influence.
Methods of exposure to chemicals:
Can enter the chemicals to the human body through four routes are:
- 1 inhalation: a common pathway in the most important occupational exposure. And materials include inhaled gases and vapors, dusts and fumes. Absorption is associated with physical and chemical properties of contaminated and physiological structure of the respiratory system
- 2 absorption through the skin and in-kind: the second most common route of occupational exposure.
Although the skin is a defensive barrier but there are some materials that you can access through the skin, eyes, and access to the circulatory system (such as shops. (And there are factors that help to increase the absorption, such as high fever and skin lesions.
- 3 swallowing and chemicals are entering care of the way to the digestive system due to: lack of hygiene or personal.
As a result of ingestion of inhaled materials.
- 4 wrong injection by infection with a sharp object contaminated with hazardous chemicals.
However, there is a difference rate of absorption of pollutants into the body between individuals by:
Age sex fitness inheritance.
As well as the absorption rate of pollutants is different depending on the climate or physical effort in the work environment
As dependent degree of exposure to dangerous chemicals on the type of material and the degree of focus of this article, and the duration of exposure
Safety rules in storing chemicals:
A - must be available in the storage areas the following specifications:
- Be built of appropriate materials in accordance with the purpose of the stomach for it.
- To provide adequate ventilation system if necessary.
- Favorable climatic conditions.
- The appropriate protective measures against fire, especially when storing flammable materials with the availability of fire alarms and appropriate.
- Hygiene and sources of heavy water for use in emergency exposure conditions.
B - Do not store chemicals in the places they are used or stored materials are to interact with it.
C - you must save the packages very hazardous chemicals outside of normal trading area.
D - should be cleaned all the blood, and destruction of explosive contaminated by hazardous and toxic immediate and reliable.
E - must be available in containers of chemicals keeping the following conditions:
- To be made of appropriate material (non-breakable, Gbr capable of reacting with the material ... etc. (
- To be sealed to prevent leakage of chemicals.
- Numbering and classification and definition of each package is stored permanently and understandable.
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