How to prevent poisoning and suffocation caused by sewage treatment?

March 13 afternoon, Xiaogan City, Hubei Province a chemical plant construction site, a worker poisoning, suffocation in the construction of more than 20 meters deep wastewater treatment tank. Fire squadron receiving the alarm, immediately dispatched a rescue fire engines, seven officers and soldiers rushed to the scene rescue, successfully rescued the trapped workers. The worker is now out of danger.

It is understood that a large amount of asphalt paint was painted in the sewage treatment tank recently. When the trapped workers work in the tank, the body may be excessively consumed or exposed to chemical toxicants due to long-term inhalation of asphalt paint, causing damage to the structure and function of the organization. People with metabolic or metabolic diseases or deaths are called poisonings.

Due to lack of oxygen or other gases in the outside world or breathing system obstacles, breathing difficulties or even respiratory arrest, known as suffocation.

The main causes of poisoning and asphyxia are the leakage of harmful gases, pipelines, large amounts of harmful gases, deposition and volatilization, or nitrogen sealing, resulting in low oxygen content in the local environment and increased harmful gases. In addition, it is prone to occur in confined and semi-enclosed spaces. Poisoning asphyxiation accidents, such as cabins, storage tanks, reaction towers, pressure vessels, pontoons, pipelines and tankers.

So, how to prevent poisoning?

( 1 ) For those who are engaged in toxic work and have suffocation hazards, they must carry out safety education on anti-drug first aid. The contents should include the safety knowledge of the work carried out, the hazards of toxic and harmful gases, and the treatment and rescue methods in emergency situations.

( 2 ) When entering a confined space operation, the oxygen content, combustible gas content, and toxic gas content of the operating environment must be analyzed.

( 3 ) When working in a poisonous place, protective equipment must be worn and it must be guarded.

When entering high-risk areas such as inspection, discharge, instrument adjustment, sampling, clearing, etc., the operator shall wear protective equipment that meets the requirements, carry a portable alarm, two people in the same group, and one person in charge of one person.

( 4 ) When entering an oxygen-deficient or toxic gas equipment operation, the process shall be effectively carried out to purge, retort, and replace the restricted space; for all pipelines connected to it that may contain flammable, explosive, toxic, and hazardous materials. The valve is isolated from the blind plate, and the blind plate must not be replaced by closing the valve. Blind board should be hanging sign.

( 5 ) It is necessary to fully recognize the hazards of simple asphyxiating gases such as nitrogen.

( 6 ) In positions where there is a risk of poisonous or suffocating, it is necessary to formulate an emergency rescue plan and provide corresponding protective equipment.

The contents of the emergency plan shall include the escape route and rescue methods for the operator in an emergency, and the site shall be equipped with life-saving facilities. The operator shall be familiar with the contents of the emergency plan. The site of confined space operations shall be equipped with a certain number of emergency protective appliances (including air respirator , air supply-type protective mask, lifeline, etc.) that are in compliance with the regulations. There shall be no obstructions inside and outside the entrance and exit to ensure unimpeded access and facilitate personnel access and rescue. evacuation.

( 7 ) The concentration of toxic media in toxic and hazardous areas should be regularly tested to ensure compliance with national standards.

When entering a confined space, natural ventilation may be used to ensure the circulation of air and the need for human breathing. If necessary, forced ventilation may be used and oxygen inflow is strictly prohibited. Workers entering a confined space must not work too long each time and should rotate or rest.

( 8 ) All kinds of toxic articles and anti-virus appliances must be managed by special personnel and inspected regularly; equipment and instruments involved in and detecting toxic substances should be regularly checked and kept intact.

( 9 ) Improve the management system of toxic and hazardous substances and strictly enforce them. For workplaces that do not meet the required hygiene standards for a long time, operations should be stopped. The workplace where the concentration exceeds the national occupational exposure limit or has been poisoned should be rectified or monitored as a key hidden point.

Poisoning asphyxiation emergency treatment

Evacuation and First Aid When Poisonous Gas Leaks

( 1 ) Self-help

In workplaces where toxic gas leaks may or have occurred, when symptoms such as dizziness, headache, nausea, and weakness appear suddenly, you must be aware of the possibility of poisoning. At this moment, you should hold your breath and quickly run out of the danger zone against the wind. If the direction of the wind is the same as the fire source or the poison source, you should run in the side direction; if it is in a high place without fence, grab the thing at the fastest speed or trip to the wind side to avoid falling; if possible As soon as possible, the alarm facilities will be activated. At the same time, quickly soak the water, clothes, towels, masks, etc. that can be used around them and cover your nose and mouth to escape from the scene so as not to inhale toxic gases.

( 2 ) Save each other

Rescuers first find out the environment in which the victim was rescued, choose a suitable gas mask , and rescue the poisoned person to a fresh air in the premise of good protection. Rescue workers should approach the site from the upper hand and uphill, and blind entry is forbidden.

Rescue space operation first aid for asphyxiation

There was an emergency situation in which there was poisoning and suffocation. The leaders on the scene should take the initiative to take charge of the command. Rescuers must wear isolated protective masks to enter the equipment, and at least one person should do contact work on the outside. This point is very important. Rescue work should happen every second and every time, but it must be calm and correct, and it must not be blindly rescued. There have been many incidents in various industries that have caused injury and death due to improper rescue. After the victim evacuates the scene, he can use some simple methods such as artificial respiration for rescue.