675 IAC 30-5-11 Repairs or alterations to boilers and pressure vessels

Sec. 11. (a) This section covers rules for repairs and alterations to boilers and unfired pressure vessels. Where applicable rules for a repair or alteration are not provided by this rule, details of design and construction shall be consistent with the rules in the ASME B&PVC, or the rules for repairs contained in Part 3 of the NBIC, the API 510, or the code to which the item was originally constructed. (b) Each boiler and unfired pressure vessel covered by this article must be repaired by an organization in possession of a valid "R" or "NR" Certificate of Authorization issued by the NBBI. The following are clarifications for repairs: (1) Repairs may be categorized as repairs or routine repairs as defined in Part 3 of the NBIC. (2) Rerolled replacement tubes shall be considered a repair and shall be performed in accordance with Part 3 of the NBIC. (3) Rerolling an existing tube is not considered a repair. (4) Seal welding or explosive welding of tube plugs shall be considered a repair and shall be performed in accordance with Part 3 of the NBIC. (c) Each boiler and unfired pressure vessel covered by this article shall only be altered in accordance with the requirements in Part 3 of the NBIC as set forth in 675 IAC 30-1-1. (d) When an alteration consists of re-rating a boiler or unfired pressure vessel, allowable stress values from the edition of the code of construction to which the item was originally fabricated shall be used. (e) All applicable NBBI forms shall be filed with the division upon completion of any repair or alteration.