34 Pa. Code § 3a.5 – Pennsylvania Inspector Commission and National Board Commission.

(a) An individual shall hold a current Pennsylvania Inspector Commission to inspect boilers and unfired pressure vessels in this Commonwealth.
(b) The Department will conduct a Pennsylvania Inspector Commission examination on the act, this chapter and the ASME Codes.
(c) An applicant for a Pennsylvania Inspector Commission shall meet the following requirements:
1. (1) An applicant shall hold a current National Board Commission.
2. (2) An applicant shall meet the National Board requirements in NB-263.
3. (3) An applicant shall pass the Pennsylvania Inspector Commission examination with a grade of 70% or more.
(d) The National Board application will be used as the application for a Pennsylvania Inspector Commission examination.
(e) The Department will issue a Pennsylvania credential card and commission to an applicant who meets the requirements of subsection (c) and pays the required fee under § 3a.2 (relating to fees).
(f) The Department will administer examinations for National Board Commissions four times a year. Upon successful completion of the National Board Commission examination administered by the Department, the Department will issue a certificate of competency to the applicant which will enable the applicant to receive a National Board Commission.

This section cited in 34 Pa. Code § 3a.8 (reciprocity).