The safety and fire prevention of laboratories have always been very important. However, we can still hear many news incidents of laboratory explosions. After delving into the reasons behind them, they can be roughly divided into several categories: uncontrollable mutations in researchers' experiments, poor quality of safety cabinets in laboratories, and non-standard use of safety cabinets by operators. It can be said that using the right explosion-proof cabinet in the laboratory is a safety cabinet, but using the wrong one can be a fatal cabinet! So Sai Yu will talk to everyone about the precautions for using explosion-proof cabinets in the laboratory.
Explosion proof cabinet is a device used to store Tianna water, machine cleaning water, board washing water, white oil, alcohol, paint, gasoline, and various hazardous chemical products. It can effectively prevent chemical spills and prevent fire accidents; It can not only protect the safety and hygiene of the working environment, but also ensure the safety of the lives and property of enterprise employees. Generally speaking, in order to better distinguish the stored chemicals, chemical safety cabinets are distinguished by different colors, and the overall design of explosion-proof cabinets is yellow.
The explosion-proof cabinet stores flammable and explosive chemicals, so its safety maintenance is also very important. Firstly, there is exhaust. The explosion-proof safety cabinet is equipped with dual exhaust ports with built-in flame arresters (with plugs), usually located on both sides of the cabinet, with one side high and the other low. According to relevant safety regulations, if there is no exhaust, the exhaust port should be sealed with a plug; If the safety cabinet needs to be vented for any reason, it should be set up in accordance with relevant safety standards and should not affect the performance of the explosion-proof safety cabinet.
Secondly, there is the issue of grounding. The steel safety cabinet comes with a built-in grounding strap, usually located on the right side of the bottom. For the safe storage of flammable materials, it is necessary to ground them as much as possible for safety reasons. If the distribution and collection process is carried out inside a safety cabinet, such as pumping out from a drum or pouring waste liquid into the drum through a funnel, the safety cabinet should be grounded and the correct connection technology of the container should be used, which is crucial.
In addition, when using explosion-proof cabinets in daily life, we also need to pay attention to the flat ground where explosion-proof safety cabinets are placed. If multiple explosion-proof safety cabinets are placed together, the spacing between each cabinet should not be less than 15 centimeters. Moreover, the location where explosion-proof cabinets are placed should be away from fire sources or other heating and cooling instruments and equipment, as well as splashing chemical liquids or slag. If the explosion-proof safety cabinet is placed in a closed and small space, or if the cabinet is placed in a place with strict restrictions on the volatilization of flammable liquids, an exhaust system should be connected to the ventilation opening of the cabinet to eliminate the accumulation of flammable liquids inside the cabinet due to volatilization. Do you understand?
