Maryland Public Safety Section 12-914

      A person who repairs or alters a boiler or pressure vessel shall:

            (1)      give notice to and obtain approval from the Chief Boiler Inspector, a deputy boiler inspector, or a special inspector before beginning a repair or alteration that:

                  (i)      affects the working pressure or safety of a boiler or pressure vessel; or

                  (ii)      involves fusion welding;

            (2)      repair the boiler or pressure vessel in accordance with regulations adopted under this subtitle; and

            (3)      provide reports, as required by regulations adopted under this subtitle, to the Chief Boiler Inspector and the owner of the boiler or pressure vessel.