For what is worth, Jiangnan is building a dedicated onshore boiler testing facility. This facility will allegedly be used to verify the steam supply system of China's carrier nuclear reactors. The test boilers will be able to generate enough steam and steam pressure to test the bearing capacity of various pipes and valves as well as the steam turbines destined for the nuclear carrier.
Going back earlier,
in May of 2020, the top leadership of Jiangnan shipyard paid a visit to Bohai shipyard to conduct detailed exchanges on product development and personnel training, etc. The visit follows up on earlier exchanges between the two shipyards.
Of course, Bohai has a lot of experience building nuclear-powered submarines. Jiangnan has no experience with nuclear power plants.