Inspect the weld seams at the root of the stationary blades for cracks and corrosion thinning.
Measure the radial clearance between the shaft hole and the rotating shaft to ensure it is within acceptable limits.
Clean the flow channels of salt deposits to ensure adequate flow area.
Verify the sealing condition of the baffle plate's split surface and replace any failed sealing strips.
For the front section baffle plate of the high-pressure cylinder, periodic metallographic testing is required to assess the degree of material creep damage.