Vegetables should be checked regularly, ideally every few days, to monitor their freshness and prevent spoilage. Look for signs of wilting, discoloration, or mold. Storing them properly in the refrigerator can extend their shelf life, but it's still important to inspect them frequently to ensure they remain in good condition for consumption.
DailyDaily
monthly
Commercially speaking, in the UK they have to be checked annually, and signed.
brake linings should be checked at 15,000 and 25,000 miles and then every 5,000 miles after that.
Every time it is worn!
Yes because people die often from building collapses.
every 4 weeks in the community
With each brake job.
Every time it is worn.
Every time the PFD is worn
every 7500 miles or 12 months
Every time the PFD is worn