System frequency of substation is dependant on active load of power grid. when system frequency exceeds allowable limits load shall be regulated immediately for stabilization of system frequency.

The pump is rated pressure pump work for the highest allowable pressure, but their work is determined by external pressure load, pump life are directly related to their work pressure.

Depending on results of the analyses the "load Group" allowable loadings may be modified to suit the specific requirements of the technical specification.