Twelve year service · NFPA 10 §8.3
Hydrostatic testing at twelve years
The cylinder itself is pressure tested. This is the interval that decides whether a unit stays in service or is replaced.
Hamilton Fire Protection12 YEAR
Hydrostatic testing
NFPA 10 §8.3
EVERY 12 YEARS
Performed byLicensed technician
Price per unitQuoted per site
What the service includes
The cylinder is tested, not just the contents
StepWhat we check or replace
Strip and inspectValve removed, cylinder emptied and examined inside and out.
Pressure testTested to the test pressure stamped on the cylinder shell.
Expansion checkPermanent expansion measured against the allowable limit.
Condemn or returnFailed shells are condemned and removed from service, not repaired.
Test recordTest date and our mark applied to the cylinder as the permanent record.
Who performs it
Performed at a licensed facility. The cylinder is tested to the pressure stamped on its own shell, not a generic figure.
Technician licenseType B, portables only
If it lapses
What an inspector sees
Past twelve years without a test the unit is out of service, whatever the tag says. This is the interval most often missed, because the date lives on the cylinder stamp rather than the tag.
Read the compliance guideApplies to
- Dry chemical, stored pressure
- 12 YEARS
- Carbon dioxide cylinders
- 5 YEARS
- Water and wet chemical
- 5 YEARS
- Date source
- CYLINDER STAMP
Other services
The rest of the schedule
Hamilton Fire ProtectionANNUAL
Inspection and tagging
NFPA 10 §7.2
The yearly tag on every unit in the building.
Hamilton Fire ProtectionAS NEEDED
Recharge and refill
NFPA 10 §7.3
Any unit that has been discharged or found low.
Hamilton Fire Protection6 YEAR
Internal maintenance
NFPA 10 §7.3
Six year strip, internal inspection, and recharge.
Send the site address and unit count
A written quote comes back before anything is scheduled.