At the completion of each inspection or test required by this
standard, the person making the inspection or test shall certify that the
inspection or test has been made and the date on which it was made.
Certifications of hydrostatic testing shall be retained until the fire
extinguisher is retested or permanently removed from service. Other
certifications shall be retained for one year.
Table C-1 Hydrostatic Test Intervals for Fire Extinguishers
+-------------------------------------------------+----------+
| | Test |
| Extinguisher type | interval |
| | (years) |
+-------------------------------------------------+----------+
| Soda Acid.......................................| 5 |
| Cartridge-Operated Water and/or Antifreeze......| 5 |
| Stored-Pressure Water and/or Antifreeze.........| 5 |
| Wetting Agent...................................| 5 |
| Foam............................................| 5 |
| AFFF (Aqueous Film Forming Foam)................| 5 |
| Loaded Stream...................................| 5 |
| Dry-Chemical with Stainless Steel Shells........| 5 |
| Carbon Dioxide..................................| 5 |
| Dry-Chemical, Stored Pressure, with Mild | |
| Steel Shells, Brazed Brass Shells, | |
| or Aluminum Shells.............................| 12 |
| Dry-Chemical, Cartridge or Cylinder | |
| Operated, with Mild Steel Shells...............| 12 |
| Bromotrifluoromethane Halon 1301................| 12 |
| Bromochlorodifluoromethane Halon 1211...........| 12 |
| Dry-Powder, Cartridge or Cylinder-Operated, | |
| with Mild Steel Shells1........................| 12 |
+-------------------------------------------------+----------+
1 Except for stainless steel and steel used for compressed gas
cylinders, all other steel shells are defined as "mild steel" shells.