229 Neb. Admin. Code, ch. 4, § 015
Whenever repairs are made to fittings and appliances or it becomes necessary to replace them, the work must comply with the requirements of the applicable construction code, the National Board Inspection Code and API-510 as appropriate for boilers and pressure vessels. For boilers that have control systems that are required to meet the rules of ASME CSD-1, when components of the control systems are repaired or replaced, the replacements and the affected part of the control system must meet the most current state adopted edition of ASME CSD-1 that is listed in 229 NAC 2 (010). For boilers that have control systems that were required to meet the rules of NFPA 8501, 8502, 8503, 8504, 8505, or 8506, when components of the control systems are repaired or replaced, the replacements and the affected part of the control system must meet the most current state adopted edition of NFPA 85 that is listed in 229 NAC 2 (010). If a part is replaced with a part that is like for like in make, model and specifications, an upgrade to the latest adopted edition/addenda of the applicable code is not required. If a part is replaced that is not like for like, that section of the control system shall be upgraded to the latest edition/addenda of the applicable code for the controls. When a fuel train is upgraded or replaced, the required emergency shutdown switch(s) shall be installed and the complete fuel train shall meet the latest adopted edition/addenda of the appropriate code. If there are any questions as to the need and extent of the upgrade, a detailed plan shall be submitted to the Chief Boiler Inspector outlining the make, model, and specifications of the component being removed and the make, model and specifications of the intended replacement part and any other necessary information to determine the need for an upgrade. This plan shall include which standards the component or portion of the system is designed and constructed to meet.
229 Neb. Admin. Code, ch. 4, § 015