Jacks should be inspected regularly, ideally before each use, to ensure they are functioning properly and safely. Additionally, a more thorough inspection should be conducted at least annually or according to the manufacturer's recommendations. Look for signs of wear, damage, or leaks, and ensure that all components are in good condition. Regular maintenance helps prevent accidents and extends the lifespan of the equipment.
Daily
before use
For fish tanks, weekly, at a minimum.
Septic tank drains should be inspected and cleaned every 3-5 years to ensure they are functioning properly.
The whole vehicle should have a safety inspection every service.
Fire extinguishers should be inspected annually - by a suitably qualified person.
The vehicle should be safety inspected every oil change, that's my opinion.
Radiator hoses and heater hoses should be inspected yearly and replaced when neccessary.
The error rate is less taht 1%. You should have your valves inspected often.
The contents of any emergency kit should be routinely inspected, depending on the anticipated necessity and/or the current disaster "season." Depending on where you are, it should be inspected and replenished every 6-15 months, if not more frequently.
For your protection, yes, it should be inspected
The purpose of a septic cleanout cap is to provide access to the septic system for inspection, maintenance, and pumping. It should be inspected and maintained at least once a year to ensure proper functioning and prevent potential issues.