Section R. 408.10965 - Inspection and maintenance; foam systemsRule 965.
(1) A high expansion or synthetic and combined agent foam system shall be inspected by a trained and authorized employee or by an outside service no less than once a year to ensure operability.(2) A foam-water system shall be inspected not less than every 6 months.(3) Strainers shall be inspected and cleaned after each use.Mich. Admin. Code R. 408.10965