"qualified to use" is a correct and usable phrase in written English.
You can use it when referring to someone or something's capacity or right to use a particular resource, tool, or skill. For example: "John is qualified to use the company's software suite."
He has taken CPR courses, and he's qualified to use an electric defibrillator.
He wouldn't have thought them qualified to use Suave shampoo, let alone to be called suave.
General practitioners who have purchased the device, which sells for around $5,000, say they are qualified to use it.
But will its soldiers be well-enough trained and qualified to use the system effectively and to repair it?
I would happily register as a non-gun-owning citizen who is qualified to use a weapon accurately and safely.
The F.D.A., for example, regulates radiation equipment, but each individual state is responsible for how those machines are used and who is qualified to use them.
American soldiers go through a seven-week course to qualify to use the missiles and then are required to requalify quarterly.
But a closer look at the ruling makes it clear that while the Supreme Court restored the right of all patent holders to use the doctrine, it set up new requirements that mean most will not qualify to use it.
The retirement note suggests publishers consider its Unified Ad Marketplace and Native Shopping Ads, if they qualify to use them.
Stainless had to set up a separate company in the US in order to qualify to use Kickstarter.
Like its fellow banks, RBS has been caught up in the mis-selling of payment protection insurance (PPI) - cover customers either did not need or did not qualify to use - and other banking scandals.
