A qualified Yes is the answer.
An AWS CWI is trained and examined in such a way as to be proficiant in a variety of code types and styles. The practical exams for an AWS CWI (Part B) is designed to mimic structural, pipeing, and pressure vessel codes.
But as alway, the job itself will dictate the specific qualifications for inspection personel... Some jobs are under the authority of regional or state directives that specify qnique qualifications for inspectors, others do not.
The CWI designation for most people is just the very beginning on a long road of an inspection career.