CFN scientific and technical personnel, as well as external users, may need to work outside of normal operating hours, during which time support is limited and many colleagues may not be around. Therefore, working outside the 8 a.m. to 6 p.m. envelope on weekdays, or anytime on weekends and holidays, requires special precautions, especially if working in a laboratory.
CFN users are expected to work at the CFN during normal working hours. Users with extensive experience working at the CFN may be granted permission by the appropriate facility leader and ES&H Coordinator to work after hours. Users first must complete the Request to Work After-Hours at the CFN form. If approved the user would follow the procedure outlined for CFN employees.
Guest scientists working at the CFN for an extended period of time (> three months) may be permitted to work after hours only after they have gained extensive experience with the operation of the CFN and its facilities. Guests must first complete the Request to Work After-Hours at the CFN form. If approved the user would follow the procedure outlined for CFN employees in the previous section.
Activities that are not permitted outside of the normal operating hours are working with hydrofluoric acid (HF), exchanging pyrophoric, flammable, or toxic gas cylinders.