Freon accident risk:
1. Freon itself is non-toxic and a kind of suffocating gas. Freon is heavier than air. After leakage, it will stay in a low and poorly ventilated place. When it mixes with air to a certain concentration, it will cause hypoxia in the environment and cause people to be in the environment. Staying in this environment can cause suffocation due to lack of oxygen. Excessive inhalation or long time can inhibit respiratory function and cause coma or even death.
2. Freon can decompose to produce toxic and harmful gases such as phosgene, hydrogen chloride, hydrogen fluoride, etc. when it meets an open flame and under the action of water vapor, which can cause poisoning.
3. The human body directly contacts the liquid freon, which can cause frostbite.
4. If the container or gas cylinder storing Freon encounters high heat, the internal pressure will increase, and there is a danger of cracking and physical explosion.
R407C and R134a:
1. Avoid entering highly concentrated water vapor. Although this type of refrigerant is not easy to burn under normal temperature and pressure conditions, its mixture can burn under high pressure and high concentration air conditions. The storage of refrigerants should be far away from fire sources and high-temperature metal surfaces.
2. R407C and R134a refrigerants have low toxicity, but high-dose inhalation of R407C will cause anesthesia, and very high concentrations will cause abnormal heart rhythms and cause sudden death. The high refrigerant concentration of R407C and R134a in the atmosphere will cause suffocation due to lack of oxygen.
3. Contact with refrigerants on eyes, hands and skin will cause frostbite.
4. The mixed gas with air shall not be used for pressure and leak detection tests.
5. Do not overheat the liquid reservoir containing refrigerant. Thermal decomposition will produce strong toxicity
And (R407C strongly corrosive) (R134a irritating) steam. If it overheats, the reservoir will explode.
6. Do not hit or abuse the refrigerant bottle.
7. The refrigerant bottle must be placed vertically.
8. Use a suitable wrench to open and close the refrigerant bottle valve.
Protective measures, protective equipment and emergency procedures for workers:
The warning zone is delineated according to the gas affected area, and irrelevant personnel are evacuated from the crosswind and upwind direction to the safe zone. For safety, keep away from the leak location. It is recommended that emergency response personnel wear positive pressure self-contained breathing apparatus and general work clothes. Do not touch or cross the spill. Cut off the source of leakage as much as possible. The sprayed water suppresses the vapor or changes the direction of the vapor cloud to prevent the water flow from contacting the leakage. It is forbidden to directly impact the leakage or the source of leakage with water.
Environmental protection measures:
Cut off the source of leakage as much as possible. If there is good ventilation, a small amount of spillage can evaporate. If the spill volume is large, ventilate the area and cover it with sand or other suitable absorbent material. Prevent liquid from entering drains, sewers, basements or work pits, and prevent gas from spreading through sewers, ventilation systems and enclosed spaces. Because its steam will cause suffocation.
The containment and removal methods of the leaked chemicals and the disposal materials used:
Leaked gas is allowed to be discharged into the atmosphere. Keep the leaking place ventilated
If combustion occurs, use extinguishing media to extinguish the fire. Flush the refrigerant tank to cool it down; or use a fire extinguishing device.