The features of thermodynamic system for supercritical 2×350 MW units in Huaneng Ruijin Power Plant have been presented

the main problems occurred in trial operation of complete set start-up for unit

such as impact rubbing of aluminium guard plate at the carbon brush yoke side

steam leakage from the stem of reheated steam control valve at the right side

leakage of the shaft-jacking oil pipe for bearing no.5

front bearing vibration of the turbine-driven feed-water pump during rotation-impulsing small turbine

unsmooth jam of the main differential pressure valve for sealing oil

unsmooth drain from the low-pressure heater no.6

the throttle orifice not installed on bearings no.5 and no.6

large deformation of reheated steam pipeline in the heating section

high temperature on thrust shoe of the turbine-driven feed-water pump

and faults in steam seal system etc.

being expounded

and disposal measures being given.