Fire Extinguishers NFPA-10

Frequency.
Extinguishers shall be subjected to maintenance not more than one year apart or when specifically indicated by an inspection.

Stored pressure types containing a loaded stream agent shall be disassembled on an annual basis and subjected to complete maintenance. Prior to disassembly, the extinguisher shall be fully discharged to check the operation of the discharge valve and pressure gauge.
A conductivity test shall be conducted annually on all carbon dioxide hose assemblies. Hose assemblies found to be nonconductive shall be replaced.

Every six years, stored pressure extinguishers that require a 12-year hydrostatic test shall be emptied and subjected to the applicable maintenance procedures.

The removal of agent from halogenated agent extinguishers shall only be done using a halon closed recovery system. When the applicable maintenance procedures are performed during periodic recharging or hydrostatic testing, the six-year requirement shall begin from that date.

Fire Hose NFPA 1962

Rack and Reel Hose.
Hose stored on racks and reels and in hose houses shall be removed and service tested at intervals not exceeding five years after purchase date and every three years thereafter.

In-service hose shall be unracked, unreeled, or unrolled and physically inspected at least annually.

Dry Chemical Systems NFPA-17

Maintenance.
At least semiannually, maintenance shall be conducted in accordance with the manufacturer's maintenance manual.

As a minimum, such maintenance shall consist of the following:

1. Check to see that the hazard has not changed.
2. Examine all detectors, expellant gas container(s), agent container(s), releasing devices, piping, hose assemblies, nozzles, alarms, and all auxiliary equipment.
3. Verify that the agent distribution piping is not obstructed.
4. Examine the dry chemical. If there is evidence of caking, the dry chemical shall be discarded and the system shall be recharged in accordance with the manufacturer's instructions.

Exception:
The dry chemical in stored pressure systems does not require semiannual examination, but shall be examined at least every six years.

Hydrostatic Testing.
The following parts of dry chemical extinguishing systems shall be subjected to a hydrostatic pressure test at intervals not exceeding 12 years:

1. dry chemical containers
2. auxiliary pressure containers
3. hose assemblies

*Codes as determined by National Fire Protection Association