Inspection, testing, and maintenance
ITM is inspection, testing, and maintenance: the recurring work that keeps a fire protection system ready and the records defensible when the fire marshal or the insurer asks. Three documents govern most of it. NFPA 25 covers water-based systems: sprinklers, standpipes, fire pumps. NFPA 72 covers fire alarms, with the test methods in its Chapter 14. NFPA 10 covers portable extinguishers. This section holds the schedules, system by system: wet pipe, dry pipe, fire pump, fire alarm, extinguishers, kitchen suppression.
The calendar runs the business
For a contractor, the ITM calendar is the operational spine. It decides which trucks roll where, which quarter runs heavy, and which accounts are due before they think to call. A weekly no-flow run on a diesel pump, a quarterly alarm inspection, a five-year internal pipe exam: each one is recurring revenue and a deadline that does not move. Run the calendar well and the business compounds. Chase it and accounts leak away one missed visit at a time.
Who owns which duty
NFPA 25 puts the duty on the property owner or a designated representative (2023 edition, Chapter 4). The owner keeps the systems in working order and keeps the records. The contractor performs the work the owner hires done, reports what it finds, and hands deficiencies back to the owner to correct. A contract can delegate tasks. It cannot transfer the owner's responsibility, and honest contractors say so in writing.
Cadence comes down to the adopted edition
How often a task is due is not one national answer. Each state or city adopts a specific edition of each standard, and a jurisdiction enforcing the 2017 edition of NFPA 25 reads a different document than one on the 2023 edition. Intervals and test methods are not always the same between them. Every schedule question ends the same way: check which edition your authority having jurisdiction has adopted. For the vocabulary, see the glossary. If your own calendar is the open question, start with the operating audit.