Final answer:
Portable fire extinguishers need to be checked annually by a qualified technician or certified professional to ensure they are in proper working condition and located in the correct place. Regular visual inspections should also be conducted by the user to check for any obvious signs of damage or obstruction. correct option is 4.
Step-by-step explanation:
Portable fire extinguishers are required to be checked every year. Regular maintenance and inspection of fire extinguishers are essential to ensure they are in proper working order in case of a fire emergency. The annual inspection is conducted by a qualified technician or a certified fire extinguisher service professional, who checks the condition of the extinguisher, ensures it has the correct pressure, and inspects the safety seals and labels.
During the annual inspection, the technician will also verify that the extinguisher is located in the correct place, visible, and easily accessible. They will check for any physical damage on the extinguisher, such as dents, rust, or leakage. If any issues are identified, the technician will recommend repairs or replacement.
It's important to remember that while annual inspections are required, regular visual inspections should also be performed by the user. This includes checking the pressure gauge, ensuring the extinguisher is not obstructed, and confirming that the safety pin and tamper seals are intact. An in-depth inspection by a professional is crucial to ensure the proper functioning of the fire extinguisher and to maintain a safe environment.