This license is for people who inspect boilers, tank pressure vessels and accessories for conformance to safety laws and standards regulating their design, fabrication, installation, repair and operation.


  • U.S. Citizen or filed declaration of intent to become one;
  • 18 years of age at least;
  • Professional: Must complete an application listing prior experience; skills can be determined through practical exam
  • Examination: Must pass written, oral and practical exams, offered approximately once every 3 months
  • Must possess a National Board Commission
  • No continuing education is required.