Automated radio alarm

Automated radio alarm is a radio station in Fallout 4. The signal leads to the Mass Fusion Containment Shed. The building is roughly south south east of Radio Tower 3SM-U81.

Characteristics
The station goes on fast repeat with the message; "Reactor three in sub-level is malfunctioning. Radiation levels critical. Immediate service is required." However, there does not seem to be any way to access the sub-level or the reactors within.