If it is safe to do so, perform the following steps:
- Close chemical fume hood sashes
- Label, store and secure hazardous materials in safe compartments
- Shut off gas valves and secure gas cylinders, except those servicing critical equipment
- Confirm proper ventilation for cryogenic liquids
- Check pressure-, temperature-, air- or moisture-sensitive materials and equipment. Reactions in progress may need to be terminated
- Water-reactive materials should be placed in sealed containers and stored in areas that are unlikely to be wet
- Unplug all electrical devices (specifically those that generate heat)
- Seal/close and plug all refrigerators, freezers, incubators and other essential equipment into red emergency power outlets
- Exit the laboratory and lock the door. Report all critical systems that need immediate power supply to Facilities Management (FM)
- If the situation allows, dispose of all wastes:
- Dispose of regular trash that may rot
- Prepare chemical wastes by properly labeling and storing waste containers
- Collect biohazard and medical wastes. Add bleach to disinfect any cultures or waste collected in aspiration flasks before leaving lab.