Third-party contractor accreditation programs are required in specifications around the world. Special inspection agencies and their inspectors are required to demonstrate competence and relevant experience. This is demonstrated by passing a Firestop Exam.
There are various ways to determine if a person is qualified to do a task or trade. Licensing through the state is probably one of the most common and is often required.
On June 7, the NFPA Fire Test Committee is set to vote on a revision that would effectively change the NFPA Standard 285 (multi-story fire test for exterior walls).