On-Site Turbine Repair Services

If it is beneficial to you to have turbine component repairs performed on-site, we offer our portable equipment to be ready when components are removed from the turbine.  Contact us today to reserve our portable repair equipment to be on-site for your next turbine outage.

Wind Turbine Machining

We recently completed another uptower wind turbine shaft machining project.  Our equipment and personnel will travel to wherever the problem may be.  For the wind industry, it happens to be 200+ feet above the ground, but we’re happy to do this on your turbine deck or any other area in the plant as well.  Please give us a call if you have any emergent shaft machining needs, we’ll respond quickly and get your equipment back up and running.  For more information on our wind turbine specialty machining services please CLICK HERE.

 

Before

 

After

Frame 5 Major Inspection

We were contracted to perform a Major Inspection on a Frame 5 Combustion Turbine for an Independent Power Producer in the Northern U.S.  Upon arrival the unit was shut down and locked out to prepare for the upcoming inspection. The necessary roof sections and inlets were removed for crane access to remove components. All combustion hardware was removed during the inspection – liners, cross fire tubes, and transition pieces.

During disassembly there was a great deal of broken bolting experienced on this unit, mainly due to the fact it is an outdoor unit that has not been disassembled in many years. These broken bolts were removed by a local vendor as well as the repair of the threaded holes. The combustion hardware was not in great condition, with cracked liners and high wear on the fuel nozzles.  The crossfire tubes were severely worn. Exhaust cooling air piping was also found to be severally corroded.  The inlet access door was removed for inspection of the inlet and the IGV’s. The IGV angles and clearances were checked and verified.  The row #1 compressor blade tip clearances were also checked. The IGV’s were cleaned for inspection.  After the inspection the IGV’s with excessive clearance had the bushings replaced. The inlet was cleaned and visually inspected by our Technical Field Advisor and plant personnel prior to closing. The main oil pump was disassembled and inspected; bearings were scored so they were replaced with new ones from the customer. The spline shaft had moderate wear on the gear teeth, and was replaced as well.

The 9th stage hook fit was cracked and corroded which necessitated the removal of the aft compressor case. This section of the compressor case was removed and sent to a repair shop. Upon return to the site the aft compressor case was reinstalled with all bolting torqued to support the lower half.

All refurbished and new hardware from the customer’s inventory was checked, with serial numbers recorded and marked for location.

During the inspection all the upper half cases were removed as well as the upper half nozzles – 1st and 2nd.  The upper half bearings were disassembled, and the rotor was removed. The number 2 bearing was found to be severally worn and out of tolerance. This allowed the rotor to drop and rub components in the lower half of the turbine section. All of the used lower half parts were removed and new or refurbished parts were installed. The rotor was cleaned, refurbished stage 1 buckets were installed, and the journals were lapped, then installed with refurbished bearings. The customer supplied new or refurbished stage 1 and 2 nozzles which were installed during the outage. All of the upper half cases were installed; all bolts were torqued per specification.

 

After completion of the unit the LOTO was released and the customer prepared for the test run. We were released from site after the unit was at 5MW’s and had excellent bearing vibrations.

Another great project by our Operations team, and another satisfied customer!

Summer Maintenance Checklist

Summertime is almost here!  That means summer run season is beginning and many turbine generator sets will be in operation over these next few months.  While the units are in operation that provides facilities with the opportunity check some items off of the to-do list.  We offer a variety of non-turbine outage services during the summer months.  Please see our common summer services below and let us know if there is anything we can help you accomplish.

Contact us HERE to request a quotation.

COMMON SERVICES OFFERED:

  • Running Condition Assessments to assess your Steam Turbine
  • Pre-planning Support for Upcoming Outages
  • Inventory Recommendations for Spare Parts
  • Evaluation of Repair Programs
  • Evaluation of Preventative Maintenance Programs
  • Emergent and Unplanned Maintenance
  • Evaluate Plant Performance Issues
  • Owner’s Representatives for Plant Projects
  • Temporary Maintenance Labor
  • Parts Reverse Engineering and Manufacturing
  • Field Machining of Components

Frame 7B Combustion Inspection

PSG mobilized a Technical Field Advisor, Foreman, Turbine Mechanics, and Tooling to a Utility site in the southern U.S. to perform a combustion inspection ‘’CI’’ on a GE MS-7000B combustion turbine.

The job consisted of removing and replacing all combustion parts and associated consumables. The fuel nozzles, combustion liners and transition pieces were removed and replaced with OEM refurbished components.

The bullhorns, combustion chambers, crossfire tubes, retainer clips and lid covers were returned to service with no replacement necessary. Transition piece hardware was replaced with new parts and the crossfire tubes and retainer clips were returned to service with minor wear being noted. All associated flange gaskets were replaced with new OEM consumable parts in all 10 combustion cans as a preventive maintenance practice. New flange bolting hardware was also installed as a preventive maintenance practice.

The combustion wrapper was removed to better access the transition pieces and have a better visual inspection of the 1st stage nozzle, all wrapper case bolting was replaced with new upgraded components.

The inlet was visually inspected and found to be in overall good visual condition.

A visual inspection of the exhaust plenum showed the assembly to be in overall good visual condition with minor wear noted.

The end result was another successful combustion inspection on a Frame 7B combustion turbine, and most importantly, a satisfied customer.

The Right People

A company built on industry leadership, knowledge and experience!

We employ industry-experienced professionals who work together consistently as a cohesive team, anticipating problems and formulating best solutions. Our team approach allows us to better organize and manage your project details and plan for contingencies. This organizational structure creates a project team that runs smoothly… So your project runs smoothly too.

Project Management
Good project management is key to a successful outage. Our Technical Field Advisors and Foremen are industry veterans, with experience across all the units we service. Many of them started their careers with an OEM. They offer the technical and project management proficiency to guide your specific project and are qualified to provide clear options and recommendations when repairs are required.

Project Coordinator
The on-site Project Coordinator manages supplies, parts, services and contractors and reports costs on a daily basis. This allows us to manage your project with a single Technical Field Advisor, reducing costs and providing seamless control.

Turbine Mechanics
Each Foreman builds a base crew of Mechanics who work together consistently. We also provide formal training and advancement for a pool of mechanics who are utilized when larger crews are needed. Together, they have the necessary skills and experience, and know our tools, procedures and safety.

Remote Turbine Consultations

 

Power Services Group offers remote consultative services for those customers looking to resolve issues on their turbine power island.  Many facilities have postponed or delayed outages this year, and that may extend turbine run times to longer than some may be comfortable with.  Many turbines may have had outages planned to address issues currently being experienced.  Those outages are now postponed, and facilities must make alternative plans to address any operational issues.  At PSG, we can provide remote assistance to help you develop solutions to any potential problems you may be facing.  We will offer our opinion based on the information gathered remotely between your plant personnel and our qualified Technical Advisors.  This may include any operational data or photographs related to the issue being experienced, telephone conversations between involved parties, and remote video meetings by telephone to allow our Technical Advisors personally experience any sights and sounds that may be the result of the issue you are experiencing.  At PSG, we are here to help.  We understand that it may not be the most optimal time to have outside personnel visiting your facility, so we will do everything possible to help you develop alternatives through our remote consultative services with our qualified Technical Advisors.

We have expertise on most Steam Turbine OEM types (List of Steam Turbine OEMs we perform services on), as well as various types of Combustion Turbines (List of Combustion Turbine OEMs we perform services on).

You can call us at any time to begin discussions at 800-226-7557, or email us through the following link:  Contact Us.

If you ever experience an emergency situation, we have Technical Advisors just a phone call away at 888-MrTurbine.  We are available 24/7, 365 Days a year.

We look forward to helping you ensure your turbine is operating as efficiently as possible until your next turbine inspection.

 

Wind Turbine Shaft Machining

 

We recently received a call to perform an uptower repair of a damaged shaft inside a Wind Turbine.  We have experienced technicians that are specifically trained for uptower Wind Turbine repairs, and have the expertise and equipment to successfully execute these projects.  The final results are a safe, quality project – with a shaft that is back within OEM specified tolerances.  The photos below show the before and after of a shaft in need of refurbishment, and the excellent work that our technicians perform.  The end result is another satisfied customer…

 

Before

After

Who is Power Services Group?

Power Services Group is a market leader in providing integrated, turnkey solutions for the maintenance, repair and overhaul of turbines and generators for the power generation, oil & gas, and process industries.

We have multiple locations within the United States, each ready to provide the best possible service to our customers.  These locations are fully staffed to meet the demands of our customer base, and it is the quality of our personnel throughout the organization that make us the great company we are today.  We look forward to continuing to earn your business through hard work, and a dedication to safety and quality on every job we perform.

Another Steam Turbine Rotor Leaving the Shop!

We have another Steam Turbine Rotor leaving the shop!  This is for an industrial steam turbine in the Northern U.S.  We blast cleaned the rotor,  removed some of the existing blades and replaced with new, installed new covers, and balanced the rotor upon completion.  In addition to the rotor work we performed major repairs to specific diaphragms as well.  Another great job by our team at the steam path repair center in Pevely, Missouri!