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180 MW Alstom STF unit
- Replacement of IP/LP rotor
- Feathering of last stage blades
- HP inner block shrink rings
- WY21 generator overhaul.
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280 MW Alstom T238 generator
- Completed major overhaul on (including emergent re-wedge, machine of the slip rings and H2 seal area!) in 21 days.
- OEM bid for the basic open/clean/close in excess of 3 weeks.
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180 MW Alstom steam turbine
- Opened turbine for modification of last stage blades
- Work done as a result of Alstom Customer Information Bulletin 2DESER00109U01 for low pressure turbines ND31, ND33, ND34 & ND41
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100 MW Alstom (BBC) steam turbine
- Stator core damaged
- Baseplate grout damaged
- New stator core installed using 500 ton mobile crane
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95 MW GEC Alsthom steam turbine
- Complete shaft train realignment
- Identified and coordinated repair for coupling slipping in service.
- Root cause identified during design review as insufficient pre-stress and safety factor by OEM.
- Coupling faces machined, holes bored, honed and new studs installed with increase safety margin for operation and short-circuit events.
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2×300 MW Alstom STF steam turbine (two customers – four units)
- Customer(s) presented with CIB (customer information bulletin) recommending replacement of last stage blades
- Evaluated and coordinated recommendations for risk mitigation which allowed customer to operate the unit until a workable solution is available
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1×180 MW Alstom STF steam turbine
- Plastic deformation of IP/LP rotor creating high vibration and repeated field balancing
- Reviewed bid specification and evaluated bidders
- Supervised successful bidder for major overhaul and machining of new mid-span field balance plane
- Supervised inspection of HP turbine equipped with shrink rings
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1×80 MW Siemens VAX unit
- Developed scope of work for overhaul
- Evaluated bidders
- Supervised successful bidder
- Intervened to prevent additional charges for base scope work.
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