2. Record the start time of turning on the ultraviolet lamp.
3. Continue to turn on the ultraviolet light until the end of the specified time period. The specified time for ultraviolet disinfection in kindergarten is 2 hours.
4. Record the end time of turning off the ultraviolet lamp.
5, according to the start time and end time, calculate the cumulative irradiation time of ultraviolet lamp.
6. Fill in the cumulative exposure time in the corresponding record form, such as the column of "cumulative ultraviolet disinfection time".