"Periodic inspections" refers to regular and repetitive checks or examinations done at certain intervals to ensure that something is working properly or meeting specific standards. Full definition
* Conducted periodic inspections of company's files to ensure everything was secure and not damaged. (resume-now.com)
You'll need to give notice before conducting periodic inspections, although many landlords find these inspections helpful. (sparkrental.mysmartmove.com)
¥ Performed periodic inspections of all fire safety equipment aboard each vessel. (livecareer.com)