Any and all fire extinguishers should be inspected at least once a month. If you live in an area of severe hot or cold temperatures, it is wise to inspect them more often.
You periodically check a fire extinguisher to ensure it will be ready and functional if you need it.
There are several types of fire extinguishers that one should purchase that rely on their compact form and low weight such as Alert 5 Rechargeable fire extinguishers, and Tundra Tundra extinguishers.
Fire extinguishers should be stored and mounted where they are readily accessible on a boat, where they will not be damaged and where they can be inspected regularly.
Fire extinguishers should be inspected annually - by a suitably qualified person.
Yes, Halon fire extinguishers can be used on electrical equipment- and in fact are often recommended.
Carbon dioxide.
Where they are readily available
No, the chemicals inside fire extinguishers are not food grade. If you need to put out a fire and spray food, you should throw the food away.
Monthly
fixed assets
Nitrogen can be used in fire extinguishers as gas propellant.