Repairs And Alterations

(1) Repairs and alterations shall not be made without the permission of an inspector employed by an accredited Authorized Inspection Agency responsible for the in-service inspection of the subject boiler or pressure vessel. Such repairs and alterations shall be done in accordance with the NB. The inspector authorizing the repair or alteration shall sign the necessary NB “NB-R” form or forms. (2) The person, corporation, partnership or firm performing the repair or alteration shall have a valid license in accordance with T.C.A. § 68-122-202. In order to qualify for such license, the applicant shall have a valid Certificate of Authorization from the NB for the use of a Repair Code symbol stamp. (3) Before any necessary repairs or alterations are made, an inspector employed by the Authorized Inspection Agency responsible for the in-service inspection of the boiler or vessel shall be consulted. After such repairs or alterations are made, they shall be reviewed and found acceptable by the authorizing inspector. (4) Repairs shall be made by an organization holding a current National Board Repair Certificate of Authorization and the license required by paragraph (2) of this rule. (5) Alterations shall be made by an organization holding a current National Board Repair Certificate of Authorization and the license required by paragraph (2) of this rule. (6) In the application of riveted patches, the design of the patch and the method of installation shall be in accordance with the National Board Inspection Code, 1973 edition as amended.