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Repair Facility

Repair Facility

BGGTS has its State of Art Refurbishment facility at Dundigal Hyderabad, India, is an one-stop-shop solution with world class perfection for all customer repair needs

BGGTS over a period of years enhanced both in terms repair capability and service offerings

  • Accredited with GE Certification, ISO 9001: 2008, 14001-2004 and OHSAS 18001-2007
  • Repair of parts by adopting GE`s cutting edge technology
  • GE repair engineering approved and qualified processes and utilizing GE approved and certified consumables
  • Extendor modification, uprate component repairs and advance coating application including upgradable shroud coatings
  • First of its kind bucket refurbishment facility in India
  • F – Technology combustion and hot gas path component repairs
  • State of art repairs and Calibration facility for Standard, DLN and MNQC Fuel Nozzles
 
BGGTS Refurbishment Facility

BGGTS provides complete refurbishment of Gas Turbine components to GE specification from the state-of-the-art Refurbishment Facility
located in Hyderabad. BGGTS is the only GE qualified RefurbishmentFacility in this region, utilizing GE`s qualified repair processes developed
by GE to support the fleet ofGE-designed heavy duty Gas Turbines.
An optimum gas turbine maintenance program includes component repairs based on sound engineeringdecision. This could maximize the
availability and minimize the maintenance costs.

BGGTS over period of years enhanced both in terms repair
capability and service offerings:

  • Accredited with GE Certification, ISO 9001: 2008, 14001-2004 and OHSAS 18001-2007
  • Repair of parts by adopting GE`s cutting edge technology
  • GE repair engineering approved and qualified processes and utilizing GE approved and certified consumables
  • Extendor modification, uprate component repairs and advance coating application including abradable shroud coatings
  • First of it’s kind bucket refurbishment facility in India
  • F – technology combustion and hot gas path component repairs
  • State of art repairs and Calibration facility for Standard, DLN and MNQC Fuel Nozzles
BGGTS Refurbishment Facility
Repair Process Qualification

With new technologies being implemented in the gas turbine world, component repair is an ever- changing challenge. The effort towards increased operating efficiency and decreased heat rate require that repaired components conform closely to original equipment manufacturing drawing requirements and specifications. With that in mind, the need for consistent repair practices throughout the service organization has become a top priority. The sharing of piece–part qualifications, best practices, processes and procedures, fixtures and tooling has become more critical than ever.

Repair processes are engineered to provide customer with maximum benefits v Processes are qualified to ensure critical design and life enhanced features are incorporated and audited for compliance and reproducibility GE Repair Engineering team reviews each package and required rigorous testing before approval and release is issued to a GE authorized shop

We bring you engineered repair solutions to enhance your gas turbine performance

Repair Process Qualification
Nozzle Repairs

Nozzle repairs are critical for heavy duty gas turbine performance. Repair not only addresses general phenomena such as cracking, oxidation, distortion and other surface distresses but also restores close to new part specification such as Nozzle Area and Harmonics, Nozzle deflection, seal breach inspection, seal replacement and application of advance coatings.

  • Each nozzle segment is carefully tuned to regain new part tolerances for gas flow area and harmonics using GE proprietary measurement system and balancing methods
  • Cloth seals breach inspection, seal replacement and upgrading
  • Radial and horizontal diaphragm seal teeth removal and replacement
  • Cast iron diaphragm welding and restoring to original dimensions
  • Removal of aged coatings prior to component repair and application of new and advanced coatings to GE specifications
  • Nozzle deflection corrections to meet critical design tolerances

Advance Repair Offerings

  • Frame-6B and 9E pressurised nozzles to non-pressurized conversions for performance improvement
  • Brush seals modifications for Frame-5, 6B and 9E Stage-2 nozzle assemblies
  • Advance Thermal Barrier Coatings on Stage 1 nozzles
  • High temperature oxidation and corrosion resistant ductile diffusion GEL Coatings for Frame - 6B and 9E Stage-2 nozzle assemblies
  • Renewalloy™ repair for nozzles
Nozzle Repairs
Renewalloy™ Repairs

Nozzle repair employs GE Renewalloy™ repair technology over traditional welding techniques offering superior mechanical integrity, shorter repair cycle times, subsequent repairability and eliminates heat affected zone besides distortion free parts. Renewalloy™ repaired nozzles provide mechanical and metallurgical properties as that of the base materials. With this technique nozzle surface erosions restoration, craze crack repair and replacement of trailing edge metal loss can be well repaired.

Shroud Repairs

Shrouds minimize the bucket tip clearance leakage, insulates the casing shell from the hot gas path and structurally hold the nozzle segments (Stg 2 and above). Honeycomb shrouds are introduced as up-rate to the GE machine to enhance the output and heat rate of gas turbines.


Advance Repair Offerings

  • Repair and Abradable coatings of up-rated HR 120 shrouds to enhance output and heat rate
  • Repair and Honeycomb modification of Frame 5 Stage 2 shroud, 6B, 9E and F-Class Stage -2 and 3 Shrouds
Combustion Components

BGGTS offers effective Combustion system repairs for our B, E and F-class Gas Turbines. Components included are Transition Pieces, Combustion Liners, Caps. Flow Sleeves and Seals which over a time of use, experience degradation such as wear, cracking and distortion.

  • Repair process includes heat treatment, welding of worn our parts, replacement with current technology parts, strip and recoat of thermal barrier and wear resistant coatings
  • Combustion components are checked in audit gauges to ensure components fitment and to achieve desired clearances

Advance Repair Offerings

  • Extendor repairs and modifications for B and E class combustion components to enhance combustion repair intervals
  • Proprietary state-of-the-art robotic plasma and High Velocity Oxy-Fuel (HVOF) thermal barrier coatings,
  • Full body TBC coatings for B & E class TP, Extendor coatings
Combustion Components
Fuel Nozzle Assemblies

BGGTS offers sophisticated Fuel Nozzle repairs for B, E and F class Heavy Duty Gas Turbines and Fuel Nozzle assemblies which are in particular critical for gas turbine performance.

  • Fuel Nozzles are carefully disassembled, cleaned and inspected with precision equipment
  • Reassembly and flow including precision tuning of each fuel nozzle and set range is maintained within design limits
  • The precision in repair process renders a fuel nozzle assembly that is re-tuned to original flow and pressure
  • AT BGGTS, we use a calibrated sonic flow test bench that tests liquid and gas flow requirements meeting GE`s specification ensures a trouble free performance