Do you have a Steam Turbine Project Coming Up?

Contact us today to discuss the evaluation of your steam turbine components. We will provide a thorough recommendation on what repairs should be executed during this outage to maximize your efficiency and/or reliability, and what can potentially wait until the next Major Inspection.
If you have a tight outage window and require the fastest repair time available, or would simply like competitive pricing for your repairs, we can provide you with options to execute in the most efficient and cost effective manner.

Steam Turbine Field Services

Power Services Group’s extensive field service experience covers various sizes and types of Steam Turbines.   From Boiler Feed Pump Turbines to Nuclear Steam Turbines, ABB to Westinghouse, and everything in between – our Field Service teams have you covered.

Wherever you are, whatever your industry, our global field service network responds to your needs 24/7. We aim to minimize downtime and improve plant performance.

  • Outage Management & Major Overhaul
  • Valve Inspection & Repairs
  • Bearing Inspection & Repairs
  • Alignments
  • Removal, Installation & Commissioning of Mechanical Equipment
  • On-Site Machining & Balancing
  • Heavy Rigging & Transportation

Contact us today for your upcoming turbine inspection and repair projects!

Diaphragm Partition Repairs

 

We just completed repairs to another set of steam turbine diaphragms!  We performed major repairs to the partitions of multiple sets of diaphragms at our Pevely, Missouri Steam Path Repair facility.  Diaphragm repairs are common during any steam turbine major inspection, and we pride ourselves on performing quality work and turning around the diaphragms quickly to keep your turbine outage on schedule.  CONTACT US today to see how we can help you with the repairs on your next set of diaphragms.  To learn more about our Steam Path Repair capabilities, please view our page HERE.

D-11 Steam Turbine Major Inspections

The D-11 Steam Turbine is at a point in its life cycle where many Major Inspections are taking place. These units require careful attention to detail upon disassembly and reassembly of the machine, ensuring accurate clearances and proper alignment. The D-11 steam path components have many known issues for which we have developed cost effective and reliable repairs. The valve components require careful examination to ensure proper functionality between inspections. Please contact us today to discuss how we can help you plan and manage your upcoming D-11 turbine inspection.

Dresser-Rand Steam Turbine Major Inspection

 

Another Steam Turbine Major Inspection complete!  Our Industrial Steam Turbine Services Division completed a Major Inspection on a 15MW Dresser-Rand Steam Turbine late last month.  The project was completed with zero injuries, and ended with another satisfied customer.  Great job team!

Paper & Pulp Industry Turbine Experts

Looking for a Paper & Pulp Industry Turbine Specialist?

We have 34 years of experience inspecting and repairing turbines for the Paper & Pulp Industry

We are excited to have our recent digital advertisement in the July edition of the TAPPI (Technical Association of the Paper & Pulp Industry) newsletter! If you visit the link below you can view our advertisement and the newsletter in its entirety:

https://multibriefs.com/briefs/tappi/TAPPI070820.php

 

 

Outage Planning Services

Pre-Outage Planning

A Customized Plan

Most power producers are short-staffed and do not have the time and sometimes the expertise to prepare a comprehensive outage plan and workscope.  That’s why we offers the option of providing our comprehensive Pre-Outage Planning Service independent of the award of the contract for inspection and repairs.

Our field project teams have the breadth of knowledge and experience to produce the highest quality planning product, with a workscope customized to your unit and its specific signature.

One of our qualified Technical Directors will visit your plant and prepare a customized report for your specific unit.  The report will contain everything needed to plan your internal preparations for the outage and to prepare a comprehensive Request for Quote for the inspections and repairs.

 

A Basis For Your RFQ’s 

Your customized Pre-Outage Plan will include everything you need to prepare a comprehensive Request for Quote for the necessary inspections and repairs.  We will compile a summary of the findings from past inspections and develop a list of recommendations for potential repair work.  We will prepare a comprehensive and detailed suggested Statement of Work for the outage, based on these findings and observations from a unit walk-down.  Incorporating this information into your Request for Quote packages will yield “apples to apples” cost comparisons and few if any surprises on implementation.

 

A Task List For Your Facility

We will review your spare parts inventory and compile a list of recommended parts to have on hand prior to the outage.  We will recommend disposal of any expired or unusable spare parts.

We will also prepare a Critical Path Method schedule based on the defined workscope.  You can use this schedule to plan your expected outage duration and coordinate with any other activities to be conducted during this downtime.

 

What We Provide

The Pre-Outage Planning Package includes:

  • Outage History Review: We review your past outage reports to determine pending or implemented outage recommendations and any changes that may have been made to your unit.
  • Unit Walk-down: We perform a detailed walk-down of the unit, visually inspecting the components and auxiliaries that will help to develop a detailed pre-outage scope of work.
  • Customized Outage Workscope: Formulated from the on-site analysis of your unit, past outage reports, and known issues supplemented by discussion of particulars with you and your staff, we develop a workscope unique to the specifics of your unit and its current condition.
  • Outage Schedule: We take your customized workscope and create a comprehensive Critical Path Method schedule. This exceptional tool outlines a reasonable outage schedule and projected duration, and it can be used as a guide to measure the performance of your outage contractor.
  • Parts List: We compile a “recommended to buy” list determined by a physical review of your unit, prior outage report recommendations, and review of available inventory.

 

In summary, our Pre-Outage Planning deliverables to you will be:

  1. A scope of work tailored to your equipment and outage needs.
  2. A parts inventory and suggested purchase list (to support outage or emergency needs).
  3. A document to assist in the preparation of the scope for RFQ / bid documents.

 

Please CONTACT US today to learn more about how we can help you plan your next turbine outage.

Allis-Chalmers Industrial Steam Turbine Major Inspection

Power Services Group (PSG) was contracted by an industrial customer in the Midwest U.S. to perform a major inspection of their Allis-Chalmers steam turbine generator.
This unit is a non-condensing steam turbine that is directly coupled to an Allis-Chalmers air cooled generator. The turbine and generator set are of a three-bearing
design.

During the project, a Safety Meeting was held prior to the start of any work. The Safety Meeting topics were based on work activities to be performed during the shift. In addition, hazardous observations which could impact the safety of the team were discussed and resolved. Prior to performing work, a Job Safety Analysis (JSA) form was completed by the work team. This project had no accidents and no first aid incidents.

The steam path components, once removed, were dust blasted and received nondestructive examination (NDE). The NDE revealed minor indications on the stationary blading, and no repairs were deemed necessary at this time. The turbine rotor and stationary stage 6 were shipped to our steam path component inspection and repair facility in Pevely, Missouri for replacement of the 7, 8, 9 and 10 rotating blades, and repairs to the #6 stationary stage.

The generator field was removed from the stator and both the generator field and generator stator, received visual inspections and electrical testing. The generator field was shipped out to receive a retaining rings-off inspection. The stator was ice blast cleaned, received a re-wedge of the stator core windings, and final coated with an insulating epoxy.  The journal bearings were removed and visually and dimensionally inspected and received dye-penetrant and ultrasonic testing. Inspections revealed that all of the bearings, new and in service, were in excellent condition. The pedestal oil deflectors were removed and visually and dimensionally inspected. All were found to be beyond industry standard clearance tolerances and were replaced.

The inlet control and extraction control valve racks were removed, cleaned and visually and dimensionally inspected. The valve poppets and seats were NDE inspected and found to be in very good condition and were returned to service. Some of the valve linkage bushings and pins were found to be worn and were replaced. The trip throttle valve (TTV) and operator were removed, disassembled, cleaned, and inspected. All inspections were approved and the components were returned to service. The lube oil cooler was removed and replaced by plant personnel. The lube oil system shaft driven main and steam driven auxiliary oil pumps were removed and received inspections. The main oil pump (MOP) and the steam driven auxiliary oil pump, (AOP) were found to be in good condition and were reassembled and returned to service. The lube oil reservoir was opened by PSG and initially cleaned by plant personnel. Some sediment and sludge were found during the initial cleaning of the lube oil main reservoir. PSG performed a final vacuum and hand cleaning of the interior of the reservoir prior to the lube oil system high velocity oil flush (HVOF). A lube oil system HVOF was performed utilizing an external pump and heating/filtering skid. The flush was ran for approximately 72 hours and was completed once system cleanliness was acceptable.

The system trip devices were inspected, cleaned and flushed; all linkages were checked for wear and proper freedom of movement. The mechanical over speed trip test was completed after initial startup and the unit was later tied on-line. PSG personnel demobilized the job site and were released to travel after another successful project startup.

Zero safety incidents, quality work, Nice job team!

Gas Nitriding of Turbine Components

One of the durability enhancements we offer for turbine components is gas nitriding.  Gas nitriding is a surface hardening process, where nitrogen is added to the surface of steel parts using dissociated ammonia as the source. Gas nitriding develops a very hard case in a component at relatively low temperature, without the need for quenching. As a result, a very high strength product with extremely good wear resistance can be produced, with little or no dimensional change. For valve components, these material enhancements translate into increased durability and service life and ultimately, reduced maintenance cost.

Gas nitriding can be a time consuming process, which is why we have the equipment in-house to ensure you receive the quickest turnaround times possible during your turbine outage.  If you want to learn more about this and other durability improvements we offer please visit our part manufacturing web page HERE.

 

3D Component Scanning

It’s that time of year again!  When turbines are running throughout the summer season it’s a good time to scan any common parts that you may need to order again in the future.  With our portable metrology-grade 3D scanning equipment, we are able to scan components within extreme accuracy.  You can ship your components to our shop, or we can bring the experienced technicians and scanning equipment to your facility and analyze the components right there at your site.  If you have any component engineering needs please give us a call.  We’d love the opportunity to help in any way we can.   CLICK HERE for our phone and email contact information.