Field Service and Repairs are the key to Operational Cost Optimization

While a maintenance strategy based on the sole prompt replacement of parts can certainly improve the power plant availability, the key to operational expenditure optimisation and high productivity preservation is a competent and experienced Service.
Ansaldo Energia skilled Fact Finders know where to inspect, what to look for, how to react,when to repair, allowing the Power Producer to avoid inappropriate investments in maintenance.

Field Service

Field Service packages can span from on-call daily technical representative field dispatching to single or long term turn-key maintenance contracts with a jointly agreed quality and duration guarantee.
A list of offered field services is given here below:
Power plants/components survey and condition assessment
Components and parts life evaluation
Life Time Extension
Outages scheduling and technical planning
Specialists dispatching
Customer support Hot Line
Site survey
Engineering and design
Field Inspection and Fact Finding
Failure & Root Cause Analysis
All-levels field maintenance and overhauls, from day-by-day to turbogroups major overhauls
Spare parts necessity assessment, procurement, delivery, installation and management
Non Destructive Tests (NDT)
Boresonic Testing for rotor life assessment
Electrical Tests
Chemical and metallurgical analysis with electronic microscope
All kind of field tools rentals, from balancing machines to portable lathes for rotors, containerised workshops etc.

Repairs

Ansaldo Energia dedicates Repair activities to such components that can be recovered to their fullest efficiency at much lower costs than the brand new components. While normally performing the vast majority of repairs at the customer’s site, Ansaldo Energia can also perform all necessary repairing and/or improving activities in its workshops.
Workshops are already available in Italy (collocated with the Rotating Components factory), the Netherlands, Switzerland and Abu Dhabi (2 shops). A global network of affiliated workshops is under construction. Ansaldo Energia’s workshops can carry out a wide spectrum of repairing tasks ranging from stellite coating of steam turbine valves and blades, to the metal coating of bearings, to the disassembly, control and reassembly of large gas turbine rotors, up to the refurbishment of turbogenerator rotor/stator copper windings. Additionally, thanks to the recent acquisition of Energy Service Group (ESG), Ansaldo Energia strengthens its own on-site capabilities such as
Machining repairs
Balancing and alignment assessment, inspections, NDE
Generators repairs and re-winds
Weld repairs
Supervision and commissioning for steam and gas turbines, generators and power plant auxiliary equipment.

The refurbishment process

A pivotal activity in the repair field, the repair and refurbishment of gas turbine hot blades requires extremely advanced technologies. Ansaldo Energia has an extensive and proven experience in such activities:

Assessment-Inspection
Stripping
Repair (Light, Medium or Heavy Repair)
Coating

Every year, Ansaldo Energia Service performs some 200 overhauls accounting for more than 500,000 man hours. Since 2000, Ansaldo Energia has successfully carried out around 80 major gas turbine overhauls, involving the refurbishment of more than 30,000 blades.