An annual sprinkler system inspection shall be conducted at each facility during the month indicated below. Backflow preventers shall be inspected and tested during the annual inspection. In addition, 5-year inspections are to be completed on a rotational basis, with approximately 20% of the facilities (normally about 10 facilities) being inspected each year. The 5-year inspection must also fulfill all the requirements of the annual inspection. Therefore, no annual inspection is required for the year in which the 5-year inspection is completed for the specific facility.