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OCP Jorf 2021 - WBS - Coggle Diagram
OCP Jorf 2021 - WBS
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Steam turbine overhaul
Disassembly
Check alignment, turbine and blower active positions, remove all piping
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Remove Stop and control valves and actuators, and send info to Zwijndrecht for machining coupling
Loosen bolts and remove upper inner casing, Measure rotor clearances and position.
Remove rotor, bottom inner casing and bearings
Inspection
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Clean valve flanges, flip top casing, clean top casing split-line and contact surfaces, flip top casing
NDT inspection of: axial bearing, split-line, valve seats, valve cones
disassemble, inspect, clean, and reassemble stop and regulation valves
Measure and inspect: axial bearing, stuffing box and inner seal condition.
Reassembly/upgrade
Check run-out of dummy shaft, install bottom inner casing and align
Install spare radial bearings and rotor, check position and clearances
Adjust position of rotor, install top inner casing
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Install stop and control valves and new actuators
Note: top casing can be installed with valves installed, but not with actuators installed.
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