Our key services include\
Asset Solutions
•Procurement, Construction management, installation and commissioning services
•Operations and Maintenance (O&M)
•Major Maintenance, Optimization & Upgrades and Life Extension solutions on multiple OEM equipment:
• Gas turbines including Light Industrial and Aeroderivative to Heavy Frame
• Steam turbines
• Generators
• Compressors
Defaf will offer you the best possible services to make your operations safer, more efficient and more reliable. We are confident you will find defaf to be different from other industry players; offering a truly unique combination of OEM capability coupled with the flexibility, transparency and responsiveness of an independent.
POWER PLANT MAINTENANCE
- Inspection & Overhaul Steam & Gas Turbine
- Steam Turbine Overhaul
- Full inspection services (visual, dimensional, NDT)
- Rotor disassembly & reassembly
- Rotor & stator re-blading
- Rotor balancing
- Seal repair & replacement
- Dimensional restoration journals & steel areas
- HVOF & cold coatings (corrosion protection & anti fouling)
- Overhauling of Rotor & Casing
- Complete rebuilding of Turbine
- Relocation of Turbine Unit
BOILER MAINTENANCE
- Replacement of Boiler High Pressure Parts
- • Replacement of High/Low pressure Heaters
- • Overhauling of Fan & Pumps
- • Overhauling of Combustion equipments
- • Overhauling of Boiler Drum (Internal replacement & shell visual/NDT checks)
FIELD & SITE SERVICES
- Technical Supervisors
- • Electrical, Mechanical, Control, Welding and Instrumental specialists
- • QA/QC Inspectors and Testers
- • Plants Troubleshooting and Survey • Technical Training
- Technical Supervisors
- • Electrical, Mechanical, Control, Welding and Instrumental specialists
- • QA/QC Inspectors and Testers
- • Plants Troubleshooting and Survey
- • Technical Training
- Execution & Supervision of installation
- • Pre-commissioning • Commissioning • Start-up
- • Operation and Maintenance
- •NDE / Borescope Inspections •Overhaul & Outage Planning •On-Site Repair
- Heavy Duty Gas Turbines
- • Aeroderivative Gas Turbines
- • Steam Turbines
- • Centrifugal Compressors
- • Centrifugal Pumps
- • Reciprocating compressors/Cubogas
- • Control System MkII – MkVI
- • Control System Suvimac I – II plus
- • PLC-DCS Systems
OUR FIELD SPECIALISTS
- •Site Superintendents
- • Project Technical Coordinators
- • Site Managers
- • EHS Specialists
- • Mechanical Engineers
- • Steam Process/Boiler Engineer
- • Electrical/Instrumental Engineer
- • Quality Experts
- • Machinery, Control system, PLC/DCS Engineer
- • Technical Training • Material Managers
ELECTRICAL ASSEMBLY & INSTALLATION
- The electrical and instrumentation activities in which we have proven expertise with our partner are :• Electrical large networks grounding
- • Power transformers (HV, MV, LV) & cladding (bushing, piping, radiators…etc), Treatment of transformer oils
- • Mobile turbine & mobile substation,
- • Circuit breakers, switch gears and earthling : 30kV, 60kV, 220kv, 400kV • MV cubicles & protection panels.
- • Cable pulling (HV, MV, LV, FO), laying of cable trays & Connections.
- • Transmitters (pressure, temperature…), valves (motorized, manual), level indicators,
- • Detection & Fire Protection Systems
- • Telecommunications
ELECTRIC MOTORS SERVICES
- Rewinding, Reconditioning and Review of: * Motors MT and HT wound rotor type or squirrel cage rotor type.
- * DC and traction Motors of all powers.
- •Supply and assembly of brush and brush holders.
- •Vibration analysis.
- •Repair of stator wedges by replacement or reinforcement.
- •Repair magnetic circuit.
- •Alignment of the motors with their loads.
- •Insulation measurement.
- •Impedance measurement.
- •winding resistance measurement, volts drop check
- • RTD Resistance Check.
- •Expertise on site
- Turbo-generator
- •Winding (insulation recovery, replacement of wedges, completes winding …) of stator or rotor.
- •replacement of rotor generator retaining ring
- Mechanical expertise, stator / rotor coils……
- •Overhaul “major”, or “minor”
- Renovation, reconstruction of exciter
- •Grinding of collectors and shop on site.
- •Insulation measurement.
- •Impedance measurement.
- •winding resistance measurement,
- •volts drop check
- •RTD Resistance Check,
- •Hi-pot test,
- •Inspect exciter and test diodes
GAS & DIESEL ENGINE PRODUCTS SUPPORTED
GAS /DIESEL ENGINE
- Brand
- WARTSILA
- CATERPILLAR
- GE
- Waukesha
- SULZER
- MAN TURBO
