Inspections

Major Overhauls

Major outages are just that, MAJOR. GTS understands the pressure the customer is under to orchestrate a successful outage including disassembly, inspection, possible repairs, and reassembly of turbine and associated equipment. We pride ourselves in relieving some of that pressure by offering professional, motivated, team oriented employees whom understand our customer’s needs.  GTS can provide complete services for major overhauls including the following highlighted items:

  • Major Overhauls

    -Rotor Out Inspections

    -Bearing Inspections

    -Shaft Alignment

    -Diaphragm Alignment

    -Clearance Checks

    -Valve Inspections

    -Turbine Auxiliary System Inspections

    -Rotor Dimensional Checks

    -Diaphragm Inspections and Repairs

    -Gear Box Inspection

    -Seal Efficiency

    -Scheduling

GTS provides supervision, craft labor, tooling, consumables, NDE, sandblasting, repairs and some parts to support our major overhaul services. We understand the importance of safety, quality and schedule and execute our services accordingly.

Minor Overhauls

GTS understands the importance of minor overhauls. Customers have a small window of opportunity and need to take advantage of the time to perform limited minor maintenance to turbine core systems and equipment. Minor overhauls can also paint a picture of any issues developing and allow the customer to prepare for repairs or further inspection during the next opportunity. GTS provides complete minor inspection services with detailed inspection reporting and recommendations. A few of our minor inspection services includes the following:

  • Minor Overhauls

    -Bearing Inspections

    -Shaft Alignment Checks and Corrections

    -Vibration Analysis

    -Valve Inspection and Servo Motor Rebuilds

    -Bore Scope Inspections

    -Gear Box Inspections

GTS can review past inspection reports and data as well as discuss with customer past operating issues to make recommendations for corrections of turbine and / or related equipment. Preventive maintenance can ensure safety and reliability of equipment and save customers money by eliminating or correcting issues arising from extended operation or other uncontrolled factors. GTS can provide supervision, craft labor, tooling, consumables, NDE, sandblasting, repairs and some parts to support our minor overhaul services.

Gear Box

GTS can provide complete gear box inspection and repair recommendation services. Reduction gears are very important to the healthy operation and reliability of customer’s equipment. GTS has experience in the disassembly, inspection, repairs / recommendations and re-assembly of gear box equipment. These services could be a stand-alone service or be included in a minor or major overhaul.  Below are a few service items we offer.

  • Gearbox

    -Complete Dissasembly of Gear Box

    -Gear Flank Contact Check and Corrections

    -Gear Flank Backlash Check and Corrections

    -"SSS" Dutch Inspections and Repairs

    -Turning Gear Assembly Inspections and Repairs

    -NDE of Gears and Bearings

GTS has extensive experience on Flender Graffenstaden, Renk and BHS gearboxes. GTS can provide supervision, craft labor, tooling, consumables, NDE, repairs and some parts to support our gear box services.

Valves

GTS provides service for many types of valves including hydraulic and pneumatic controlled valves. GTS offers complete disassembly, inspection, repairs, parts and reassembly of valves and servo motors. Typical turbine system valves GTS provides service for are;

  • Valves

    -Steam Turbine Control Valves

    -Emergency Stop Valves

    -Non-return Valves

    -Extraction Steam Valves

    -Turbine Drain Valves

    -Servo Motor Inspections and Rebuilds

    -Steam Strainer Inspections

GTS can provide special tooling for extraction of valve bodies and seats. GTS can provide re-profiling of valve plungers to seats to regain sealing faces and operation of valve. We also offer many parts for valves. GTS can provide supervision, craft labor, tooling, consumables, NDE, sandblasting, repairs and some parts to support our valve overhaul services.

Bearings

GTS can provide bearing inspections, NDE, re-babbiting and trouble shooting for bearings experiencing high temperatures and vibrations. We have experience with radial and thrust bearings along with combined radial thrust bearings. GTS can provide supervision, craft labor, tooling, consumables, NDE, repairs and some parts to support our bearing services.

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