carefully read the instruction manuals of the instruments used
before leaving the laboratory, always ensure that all instruments are in safe condition (check-list)
use helmets, gloves, and protective goggles when necessary
record all operations performed in the appropriate logbooks
mark hazardous areas with the red-and-white chain or tape
if it is necessary to access the laboratory outside the department's opening hours, two people must be present and the Supervisor must be informed in advance
do not tamper with or remove safety devices
keep clear access to the black doors that serve as the laboratory's emergency exits (do not block corridors or doors, …)
keep clear access to laboratory doors
do not remove mezzanine railings
wear suitable shoes (for example closed and without heels) to prevent accidents on stairs and protect against impacts or small accidental spills of cryogenic liquids
In the absence of the supervisor, the most experienced person is responsible for laboratory activities: normally Elena Ferri (tel. 2354)
Head of Prevention and Protection Service (RSPP), University of Milano-Bicocca: Francesca Peltrera (tel. 6109) (email [servizio.prevenzione@unimib.it](mailto:servizio.prevenzione@unimib.it)]
in any case, do not re-enter the laboratory until the external display shows that oxygen levels have returned to normal (>20%) and until the visual alarm outside the lab has been turned off
do not tamper with safety systems:
do not bypass the solenoid valve that intercepts the gaseous nitrogen line
do not damage oxygen sensor capsules by exposing them to solvent vapors or gas flows
immediately report any anomalies in the oxygen sensors to the supervisor
In Case of Blackout
in case of blackout, the UPS (Uninterruptible Power Supply) system, thanks to its battery backup, will ensure the operation of cryostats, oxygen sensors, certain lights, and other equipment connected to panels with a red label until the batteries are depleted (actual duration depends on total load)
computers connected to the UPS will automatically shut down after a few minutes
in case of blackout, the air conditioning and ventilation system 3) stops immediately
once UPS backup ends, the oxygen monitoring system will no longer be active
in case of a prolonged blackout, if necessary, use the UPS time to safely secure cryogenic systems and leave the laboratory; otherwise, leave immediately
in any case, once UPS backup ends, leave the laboratory immediately