DeveEnergy executed the replacement of a damaged HP/IP casing on a D11 steam turbine at a UK power facility. The project included full internal alignment of turbine components to restore mechanical integrity and reliability. Despite tight outage constraints, the work was completed safely, precisely, and on schedule.
The Challenge
The UK-based power facility faced escalating reliability and safety concerns after cracks were discovered in the HP/IP casing of its D11 steam turbine. These cracks, combined with ongoing distortion and misalignment, had begun to compromise structural integrity and operational efficiency, raising the risk of unplanned shutdowns and costly secondary damage. The situation required an urgent, full casing replacement to restore the unit to serviceable condition — a complex task constrained by a narrow outage window. Precision was critical: the new casing and internal assemblies had to be installed and aligned to exacting tolerances across the rotor, diaphragms, and packing sets. Managing thermal expansion behavior and ensuring proper fit-up under field conditions demanded specialized alignment expertise, advanced metrology tools, and meticulous planning. The team faced the dual challenge of executing a technically demanding repair under tight time constraints while safeguarding the long-term reliability of a critical generation asset.
The Results
DeveEnergy successfully delivered a seamless replacement of the HP/IP casing and realignment of all internal components, restoring the turbine to optimal mechanical and thermal condition. The project team executed the change-out within the planned outage, adhering to every specification and achieving sub-millimeter alignment accuracy. Advanced measurement technologies ensured concentricity and clearance across the entire steam path, while post-commissioning testing confirmed measurable improvements in unit stability, vibration, and efficiency. The turbine was returned to service on time, meeting all operational and safety targets. The customer regained confidence in the asset’s performance, benefiting from a modernized installation, enhanced reliability, and extended lifecycle — all achieved without any unplanned downtime.
Project information
Location
United Kingdom
Market segment
Power generation
Equipment type
Steam turbine
Equipment model
D11
Precision Restored: D11 Casing Replacement
Location
United Kingdom
Market segment
Power generation
Equipment type
Steam turbine
Equipment model
D11
DeveEnergy executed the replacement of a damaged HP/IP casing on a D11 steam turbine at a UK power facility. The project included full internal alignment of turbine components to restore mechanical integrity and reliability. Despite tight outage constraints, the work was completed safely, precisely, and on schedule.
The Challenge
The UK-based power facility faced escalating reliability and safety concerns after cracks were discovered in the HP/IP casing of its D11 steam turbine. These cracks, combined with ongoing distortion and misalignment, had begun to compromise structural integrity and operational efficiency, raising the risk of unplanned shutdowns and costly secondary damage. The situation required an urgent, full casing replacement to restore the unit to serviceable condition — a complex task constrained by a narrow outage window. Precision was critical: the new casing and internal assemblies had to be installed and aligned to exacting tolerances across the rotor, diaphragms, and packing sets. Managing thermal expansion behavior and ensuring proper fit-up under field conditions demanded specialized alignment expertise, advanced metrology tools, and meticulous planning. The team faced the dual challenge of executing a technically demanding repair under tight time constraints while safeguarding the long-term reliability of a critical generation asset.
The Results
DeveEnergy successfully delivered a seamless replacement of the HP/IP casing and realignment of all internal components, restoring the turbine to optimal mechanical and thermal condition. The project team executed the change-out within the planned outage, adhering to every specification and achieving sub-millimeter alignment accuracy. Advanced measurement technologies ensured concentricity and clearance across the entire steam path, while post-commissioning testing confirmed measurable improvements in unit stability, vibration, and efficiency. The turbine was returned to service on time, meeting all operational and safety targets. The customer regained confidence in the asset’s performance, benefiting from a modernized installation, enhanced reliability, and extended lifecycle — all achieved without any unplanned downtime.
Aligned
Internal geometry and clearances restored
On Time
outage completed safely within schedule
Reliable
structural integrity and performance reinstated
