The HMI ("Signal" software running on Windows 7 PC) for the Heating Ventilation and Air Conditioning (HVAC) system at the 2H control room building …
Office of NEPA Policy and Compliance
September 22, 2025
minute read time
The HMI ("Signal" software running on Windows 7 PC) for the Heating Ventilation and Air Conditioning (HVAC) system at the 2H control room building is obsolete and unreliable. This HMI platform has been unsupported since January 2020. Operators are often confused and unable to operate the HVAC system. Replacement parts for the HVAC controls and HMI unavailable and are obsolete.