Maintenance carried out on a portable fire fighting extinguishers

* Portable fire extinguishers are to be examined by a competent person annually. 

* Each portable fire extinguisher is to be provided with a label indicating that it has been examined and the date of the examination, or the date of next examination. 

* Containers of permanently pressurized portable fire extinguishers and propellant bottles / containers of non-pressurized portable fire extinguishers shall be hydraulically pressure tested as follows: 
a. Powder extinguishers every 10 years 
b. CO2 extinguishers every 10 years 
c. Other extinguishers every 10 years