各位老师，同学：
“五一”小长假即将来临，为确保学校实验室安全，预防实验室安全事故的发生，保障和维护校园稳定安全，环境安全健康处特别提示以下注意事项：
（一）实验室人员管理
1) 五一”期间实验室应做好人员管理，避免无关人员进入（儿童、未经授权人员）；
2) 夜间或高危实验须取得导师同意，须2人在场，避免单独实验；
3) 假期期间进入实验室做实验时，应注意个人安全防护，穿戴好必要的实验服、手套、护目镜等防护用品；
(二) 实验室危险源管理
1) 强化危险化学品、高温高压设施、辐射源、生物危险因子、激光、强电强磁等安全管理，保管责任落实到人；
2) 气瓶（钢瓶） 中压缩气体属于危险化学品，应合理固定、妥善存放，防止碰撞或倾倒。不使用的气瓶或使用完毕的气瓶，务必确保总阀关闭，以防气体泄漏。超期、报废气瓶应及时联系院所安全员处理，不得存放在实验室；
3) 禁止在具有火灾、爆炸等危险性实验场所使用明火；注意防火、防爆、紧急喷淋等应急设施的维护和正常使用；
4) 规范实验场所危险废弃物暂存管理。实验危险废弃物要按规定贴好标签置于安全区域，不得混入生活垃圾或直接倒入下水道。
（三）实验室环境安全管理
1) 清理实验室桌面、地面和通道，保持实验室整洁有序，严禁在实验室堆放杂物或易燃物品；
2) 落实值日、安全检查制度， 检查实验室门窗是否完好，关闭实验室门窗，防止盗窃、雨水侵入或昆虫进入；
3) 做好实验室消防安全检查，确保灭火器、消防栓等消防设施完好有效，熟悉消防设施的位置和使用方法，严禁在消防通道堆放物品 。
各单位要高度重视假期实验室安全管理工作，强化安全责任，建立有效的事故防范措施和应急处置预案。
祝大家五一劳动节快乐！
环境安全与健康处
2025年4月30日
Dear all,
To ensure laboratory safety during the International Worker’s Day Holiday for the stability and safety of campus, general lab safety guidelines are provided as follows:
I. Lab Researcher management
1. Unauthorized personnel are not permitted (children, solicitors) to enter labs.
2. Overnight or high-risk experiments need to be authorized by supervisors, and 2 people should be present on site.
3. Strengthen the safety management of hazards in laboratories for hazardous chemicals, high temperature and high pressure facilities, compressed gas cylinders, radiation sources, biological risk.
4. Electrical vehicles are forbidden of charging in lab.
II. lab hazard management
1. lasers, high-voltages, strong electricity and magnetism, etc., and implement custody policies; standardize the temporary storage and management of hazardous wastes at experimental sites; strengthen the safety management of electricity, gas and water use in laboratory.
2. Especially for gas cylinders, heating equipment, refrigerators and other facilities that are prone to fire or explosion hazards, and strengthen the responsibilities of person in charge.
3. Strengthen compliance with laboratory regulations, strictly implement safety operation procedures, and ensure personal protection (wear lab coats, gloves, goggles, etc.) equipment are properly wear. It is forbidden to eat, cook, or sleep overnight. Implement daily cleaning and safety inspection, and shut doors and windows, water, electricity and gas before leave.
4. It is strictly forbidden to overload electricity in laboratories and illegal use of electrical appliances. Electric vehicles and their batteries are not allowed in laboratories.
III. lab environment management
1. Students are encouraged to clean lab tabletop and move hazard waste placed in center of the hall way before holiday.
2. Strengthen the safety management of controlled chemicals, and the safe use and storage of dangerous chemicals such as precursor to poison, explosion, flammable (such as ethanol, petroleum ether, ether), and explosive chemicals.
3. Experimental hazardous waste should be labeled and placed in a safe area according to regulations, and shall not be mixed with household waste or directly poured into the sewer.
4. The compressed gas in gas cylinders is a hazardous chemical and should be properly placed and stored to prevent collision or leakage. For cylinders that are not in use or are empty, be sure that the main valve is closed to prevent gas leakage. Overdue and waste gas cylinders should be disposed of in time and should not be stored in the laboratory.
All institutions should pay greater attention to laboratory safety during the holiday, strengthen safety responsibility, and establish effective accident prevention and control measures as well as emergency response plans.
Have a nice holiday!
EHS
2025. 04. 30.
