A. Except as provided in subsection (C) and (D) of this section and §005 of this chapter, pressure vessels subject to internal corrosion shall be inspected internally and externally every two years.B. Except as provided in subsections (C) and (D) of this section and §005 of this chapter, pressure vessels not subject to corrosion shall receive an external inspection every two years.C. Except as provided in subsection (D) of this section and §005 of this chapter, pressure vessels subject to internal corrosion or which contain hazardous or lethal fluids shall receive an internal inspection biennially where construction permits. Alternatively, meaningful and appropriate NDE may be performed at the inspector's discretion to determine the rate of deterioration. For those vessels whose deterioration rate has been determined, at the inspector's discretion, and with the approval of the Commissioner, the requirement for a biennial internal inspection may be extended, but in no case shall this period exceed 5 years. Pressure vessels not subject to internal corrosion shall be inspected internally, where construction permits, every 5 years. If the opening of the pressure vessel would damage internal catalysts or other devices, the inspector may, with the permission of the Commissioner, defer the internal inspection until the next date that the catalyst or other internal device is repaired or replaced, provided that no pressure vessel shall go more than fifteen years without an internal inspection.D. Unfired pressure vessels under the supervision of an owner-user inspection organization shall be inspected at intervals required by these regulations and the National Board Inspection Code, or API-510, as applicable.229 Neb. Admin. Code, ch. 5, § 003
Amended effective 8/7/2016.