Emergency response methods for ethylene oxide leaks

If ethylene oxide is stored in liquid form, it vaporizes rapidly in the event of a leak; therefore, people in the area affected by the leak must be evacuated quickly to an area upwind, and a 150-m radius zone must be immediately isolated with strict access controls. Cut off the source of fire. It is recommended that emergency responders wear self-contained positive-pressure breathing apparatus and anti-static work clothing. Seal the source of leakage as much as possible. Cover areas such as sewers near the leak site with industrial coverings or adsorbents/absorbents to prevent gases from entering. Ensure proper ventilation to accelerate diffusion. Diluted and dissolved with spray water. Construct dikes or dig pits to contain the large amount of wastewater generated. If possible, use an exhaust fan to direct the leaking gas to an open area or install appropriate nozzles to burn it off. Leaking containers must be properly handled, repaired, and inspected before being used again.

This post was last edited by ahhooyang on 2010-3-31 15:38. In the event of leakage during the loading and unloading of ethylene oxide in mobile tank trucks, the vehicle’s engine must be turned off, and the main power supply must be disconnected. If it is not possible to stop the leak, promptly mobilize empty tank trucks designed for transporting ethylene oxide. Use nitrogen from large nitrogen cylinders (with a pressure of generally 100–120 kg/cm2), and through the anti-static special hoses provided with these cylinders, connect them to the liquid inlet ports at the bottom of the tank trucks. This allows nitrogen to be introduced into the tanks, thereby increasing the pressure inside them. At the same time, use hoses from another empty tank truck: connect one end of these hoses to the liquid outlet port of the tank truck with the leak, and the other end to the liquid inlet port of the empty tank truck. By applying pressure in this way, the ethylene oxide in the tank truck with the leak can be forced into the empty tank, thus ensuring safe transfer of the liquid. Meanwhile, during the process of sealing leaks and transferring contents from tanks, flower nozzles and spray nozzles should be used to disperse the ethylene oxide gas that accumulates at the bottom of the cooling and dissolving tanks/tanks, as well as around them. This helps to prevent the highly explosive ethylene oxide from reacting with water to form ethylene glycol, which has lower explosiveness and a higher boiling point. Ethylene glycol is a colorless, viscous liquid with a sweet taste; its specific gravity is 1.1, boiling point is 197.2°C, and freezing point is -12.6°C. It absorbs moisture very easily ； It is miscible with water and ethanol, and can **lower the freezing point of water; it is used as an antifreeze in engine coolants with a low freezing point, among other applications). Then, after the sand is moistened, it is incinerated under safe conditions (ethylene glycol is burned to produce carbon dioxide and water). Furthermore, on-site, all sources of fire in the surrounding area must be extinguished, traffic must be halted, and a safety zone must be established to ensure that fire crews and professionals can carry out tasks such as stopping leaks, eliminating hazards, and putting out fires in tank trucks. Reference: web.pu.edu.tw/~pu1680/document/p7/1/1-6-9.doc

Think about the dangers: it can explode easily and reignite as well. If it does leak, no one would dare to touch it. It can also cause frostbite, and providing protection isn’t easy at all. I really can’t think of any emergency response method that sounds feasible. This thing is too scary.

Actually, the original poster doesn’t need to be so worried. You can think of ethylene oxide as liquefied gas/natural gas that we all use; in the event of a leak, it’s much easier to deal with than liquefied gas/natural gas. First and foremost, it’s necessary to strictly control sources of fire； Second, it must be diluted with water at a ratio of 24 times or more. That’s good enough!

Check the MSDS on the Safety Culture website; it has everything

Is it scary if it leaks into the pipes?