Do industrial electricians need a license?

Most states require electricians to be licensed, and the rules for plant work vary by state. Texas issues a journeyman industrial electrician license for work at refineries, chemical plants, pipelines and oil and gas operations, which takes 8,000 hours of on-the-job training and an exam. Texas law exempts maintenance electricians who are regularly employed by a business, don't do electrical work for the public and don't install equipment in new construction.