According to media reports, the Beijing Jiaotong University Laboratory exploded at 10 a.m. on December 26, 2018, killing three students. The accident once again sounded a safety warning bell to our lab practitioners. Many people will comment on the "poor laboratory operator, too dangerous biochemical laboratory", "it is not easy to be a scientific research profession, always worried about their hair, breathing and safety", "cherish the chemical students around you...".
These words always make me want to argue. There are so many toxic reagents, fire sources and high-pressure cylinders in the chemical laboratory. Is it not dangerous? Of course, there are dangers, but in my mind, the danger is absolute, the safety is relative. If we control the risk factors within the limits we can allow, the laboratory is safe. But I think the argument is very pale, because how do you say what norms and what sense, another accident happened.
Anyway, as one of the lab practitioners, we need to talk about lab safety again.
Laboratory is a window for human beings to explore the future civilized world, but the laboratory is different from the production workshop. The unknown experimental process and results also bring security challenges to our scientists. Therefore, the requirements of experimental design are relatively strict. Laboratory safety is a basic quality that every practitioner of laboratory decoration and design company should focus on. What basic safety design knowledge should be paid attention to in general laboratory decoration?
1. Laboratories generally have stirring, dumping, heating, mashing, chemical treatment, microbial culture, virus sample storage, etc., experimental operation will generally be accompanied by toxic and harmful gases or flammable and explosive gases, good ventilation facilities can timely discharge toxic and harmful or flammable and explosive gases.
2. Laboratory buildings should adopt fire-proof materials that meet the requirements of scientific research buildings, and partitions, roofs and floors should take into account fire-proof performance and laboratory process requirements. The floor is usually made of PVC or ceramic tiles. The lighting effect in the room should be adequate. The doors of the main passages should be opened outwards. There should be fire safety passages. When group accidents occur, indoor scientific researchers can evacuate quickly and promptly.
3. Laboratory power supply should be adequate. Electric heating equipment such as oven and high temperature furnace should have special sockets, switches and matching fuses. All-weather electrical appliances, such as refrigerators, are powered separately. The rest of the electrical appliances are controlled by the main switch. Emergency lights are installed in the indoor and corridor for use in case of sudden power failure at night.
4. The layout of water supply and drainage system is reasonable. The main valve should be marked clearly. No water supply or drainage pipe should pass over the precision instrument. The air-conditioning system with water as the cold and heat source is not recommended for the instrument room. Laboratory drainage system needs to use acid and alkali corrosion resistant materials, the ground should also have the necessary leakage, washing room should be waterproof and leak-proof measures. Drainage should be collected in different qualities. Polluted wastewater should be treated by wastewater before it can be discharged into urban sewers.
Let's clearly identify chemical laboratory hazards, keep them away and stay safe!