The Office of the State Fire Marshal will cite providers for similar times if you hold a fire drill the first day of the month every quarter and if you do not vary your time more than 2 to 3 hours. Drills should be conducted throughout shifts and should not show a pattern (same time of day, same day of the month). Scenarios ensure that drills are performed under varying conditions - such as the size, type and location of the fire.
National Fire Protection Agency Standard: Requires drills be conducted at least quarterly on each shift under varied conditions to simulate the unusual conditions occurring in case of fire. The fire alarm shall be transmitted during drills although a coded announcement may be used between 9 p.m. and 6 a.m. When a coded announcement is used, transmission of the alarm must occur the following morning. 2012 National Fire Protection Agency 101, 18/19.7.1.-18/22.214.171.124