Fire extinguishers should be inspected annually - by a suitably qualified person.
Commercially speaking, in the UK they have to be checked annually, and signed.
Depending upon what fire code is used and where the extinguisher is located, it should be checked monthly. In fact, a fire inspector can ask to see the records of the monthly tests, which are normally attached on a tag on each extinguisher. Modern codes are beginning to require automatic electronic monitoring of fire extinguishers.
Yearly
DailyDaily
monthly
brake linings should be checked at 15,000 and 25,000 miles and then every 5,000 miles after that.
Flammable metals often require special chemicals to extinguish, assuming there are any. So, in fact, you WOULD use a "chemical extinguisher", but probably not an ordinary dry chemical extinguisher.
The PKP fire extinguisher, or Potassium Bicarbonate Powder extinguisher, is a type of dry chemical fire extinguisher primarily used for extinguishing flammable liquid fires and electrical fires. It works by discharging a cloud of potassium bicarbonate powder that interrupts the chemical reaction of combustion. PKP extinguishers are effective on Class B (flammable liquids) and Class C (electrical) fires, making them suitable for various industrial and commercial applications. They are often recognized by their red color and are commonly found in settings where flammable substances are present.
Every time it is worn!
Monex Dry Powder is a precious metal powder used for investment purposes or in the production of various industrial products. It is produced through a unique refining process that results in a high-purity form of the metal. Investors often purchase Monex Dry Powder as a way to diversify their portfolios and hedge against economic uncertainties.
every 4 weeks in the community
With each brake job.