Normal operation
Cooling fans, dry coolers, pumps, transformers, electrical rooms, and building mechanical systems.
Property-line noise, not folklore
There is a serious way to handle noise: model it, measure it, mitigate it, and enforce it. There is also a silly way: blame “AI noise” for everything. Do the first one.
Server rooms are loud inside. Anyone who has stood in one knows that. But indoor noise inside a concrete industrial building is not the same as property-line noise.
The real outside noise questions are cooling fans, dry coolers, pumps, chillers if used, transformers, switchgear, backup generators, turbine packages, stack noise, truck traffic, construction, and testing.
Cooling fans, dry coolers, pumps, transformers, electrical rooms, and building mechanical systems.
Diesel generators, gas turbines, black-start equipment, load banks, alarms, and scheduled testing.
Combustion turbines, HRSGs, stacks, cooling equipment, transformers, and gas systems if colocated or nearby.