Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
BLS MIDTERM 2.doc
Скачиваний:
0
Добавлен:
01.05.2025
Размер:
150.53 Кб
Скачать

10. Lesions. Classification based on the degree of human exposure to hts.

When poured out (emissions) HTS form lesions. A lesion of HTS is called an area, within which there were massive destruction people, farm animals and plants by HTS. Moreover, during the hostilities or natural disasters occurring at the site of manufacture, use or transporting of HTS, the probability of these lesions is greatly increased. They are usually divided into areas of direct pouring out (discharge) of HTS, and zones of localization of their vapors.

On the degree of influence on the human organism harmful substances are divided into four classes of danger:

1st - extremely hazardous substances;

2nd - highly hazardous substances;

3rd - moderately hazardous substances;

4th - low-hazard substances.

11. Effect of contaminants on human health (acute and chronic intoxication). Prevention of occupational poisoning.

Highly toxic substances (HTS) - are chemical substances that are intended for use in the national economy and have a toxicity that can cause massive destruction of people, animals and plants. Effect of HTS on human health:

Acute intoxication occurs, as a rule, suddenly after a brief exposure to relatively high concentrations of venom and is expressed more or less severe and specific clinical symptoms.

Chronic intoxication caused by the intake of small amounts of venom and associated with the development of pathological phenomena only under condition of the long-term exposure, sometimes by several years.

Prevention of occupational poisoning

Measures to prevent occupational poisoning include hygienic rationalization process, its mechanization and hermetization

A major role in the prevention of occupational intoxications belongs to the mechanization of the production process, making it possible to conduct it in a closed apparatus and minimize the contact of the worker with toxic substances. Similar problems are solved with the hermetization (sealing) of the production equipment and facilities that emit toxic gases, fumes and dust. A reliable means of combating air pollution is the creation of vacuum, which prevents release of toxins through existing leaks.

12. Characteristics of hazardous substances used in production (ammonia, chlorine etc.). Actions in case of accidents.

Characteristics of hazardous substances used in production:

Ammonia

MAIN PROPERTIES: Colorless gas with a sharp suffocating odor, the boiling point of -33.4 C, vapor is lighter than air, explosive when mixed with oxygen. Ammonia is unstable, high-speed. Infected cloud is distributed in the upper atmosphere.

FIRST AID MEASURES: First aid in the focus of the lesion, carried out in order of self-and

mutual-aid: Wash eyes and face with water, wear a mask or cotton-gauze bandage moistened

with a 5% solution of citric acid, and wash exposed skin with water, immediately leave the

center of contamination

CHLORINE

KEY FEATURES: Greenish-yellow gas with a sharp odor, the boiling point of 34.1 C, vapor is

heavier than air.

FIRST AID MEASURES: First aid in the focus of the lesion, carried out in order of self-and mutual-aid: Rinse face with water, wear a mask or cotton-gauze bandage soaked in 2% solution of baked soda, wash exposed skip with water and soup, immediately leave the center of contamination.

Hydrochloric acid

KEY FEATURES: A colorless liquid with a sharp odor. It is easy to evaporate and smokes in the air. Is readily soluble in water. Corrosion for most metals. Boiling point 110 C, vapor is heavier than air.

FIRST AID MEASURES: First aid in the focus of the lesion, carried out in order of self-and mutual-aid: Rinse face with water, wear a mask or cotton-gauze bandage soaked in 2% solution of baking soda, and exposed skin with soap and water, leave immediately lesion.

Other Toxic Substances: Methane, Oxygen. Acetylene, Propane-butane mixture, Methanol (methyl alcohol, carbanol), Diethylene glycol, Odorant, Gas condensate

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]