I give, those had to be re done because the insulating crew stepped all over them
However there was a major rebuild that had to be done because it wasn't safe for the operation of the system
a hint, it has to do with the economizer
Could it be no pressure regulator on economiser suction to compressor?
Can only see ICS with EVM.
Or is it something to do with isolation of subcooled liquid & small non return valve to allow for expansion of cold liquid?