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.


Core Values

As we continue through this busy spring turbine outage season completing projects for customers across the globe, it is important to take a moment to reflect upon our Core Values.   We strive to perform safe, quality work – and act with honesty and integrity – as we attempt to exceed customer expectations.  Our team members are amazing individuals, and it is because of their desire to live by these guiding principles that make us successful as an organization.   We have an excellent team, and consider our customers part of that team.   We enter each turbine project with the same mindset, and the same desire to accomplish the objectives of our customers.  Let’s continue to do amazing things and finish this turbine outage season strong.  Stay safe everyone!

  •  Safety – PSG’s top priority, demonstrated by our excellent track record.
    • Zero Recordable Injuries in 2020 (TRIR is 0.00)
    • We have exceeded 2 million man-hours since our last lost-time accident and have been recognized by the National Safety Council for this accomplishment.
    • We passionately care about the safety of our team and behave as safety leaders. We are committed to preventing injuries to our people and everyone we work with.
  • Integrity
    • We are proud of our reputation, built over many years, which depends on us doing the right thing.  We build trust and act with honesty.
  • Quality and Service Excellence
    • Our company depends on our customers; we strive to understand current and future customer needs, meet our customer’s requirements and consistently exceed their expectations.

Balance Chamber Repair vs. Replace

Save time and money by repairing your balance chamber instead of replacing it.   You no longer need to worry about the hassle of stocking a spare balance chamber, or be surprised by the lead time when you go to order a new one.  We have been repairing balance chambers for utilities across the U.S. for almost 8 years now with great results.   The next time you discuss the future of your balance chamber please contact us to discuss how we can repair your existing component rather than spending the money to purchase a new one.



Steam Turbine Valve Repair & Upgrade

Power Services Group provides repairs and upgrades for your valves and valve components. We provide reverse engineering and precision replacement part manufacturing of valve components for virtually all makes and types of steam turbine valves. We also maintain one of the most extensive valve repair equipment inventories and employ the best trained and most experienced personnel in the industry.

We provide efficient and cost effective valve repairs including:

• Bonnet bore refurbishment
• Butt weld modifications
• Seat removal and replacement
• Automated deep bore welding for valve seats
• Stud extraction and hole refurbishment
• ASME Section IX weld repairs
• R-Stamp welding
• Flange face resurfacing (including elliptical)
• Field machining processes for all sealing surfaces and fit areas
• Manual and automatic hard facing of seats and discs
• Reverse engineering and part manufacturing

We can refurbish virtually all makes and models of steam turbine valves to OEM specification:

• Main Steam Stop Valves
• Governor / Control Valves
• Throttle Valves
• Intercept Valves
• Ventilation Valves
• Blowdown Valves
• Equalizer Valves

Our versatile computerized management and maintenance tracking database ensures:

• Detailed inspection reports
• Complete valve maintenance and service history
• Detailed and accurate parts replacement logging
• Itemization of obsolete and current parts
• Tracking of materials and valve parts
• Spare parts inventory
• Digital photos included in all reports

Contact Us today for all of your steam turbine valve component needs!

Excellent Customer Feedback

We recently received excellent feedback from one of our recent Steam Turbine Major Inspections performed for a Utility customer in the Southern U.S.  This is the type of feedback that makes all of the effort during the planning and execution phases worthwhile.   We are very appreciative of every opportunity we receive, and strive to do our best for each and every customer.  Great to see this type of feedback, and another outstanding job by our field and repair teams!


“The response to our RFP was clear, concise, and with a very detailed schedule.”

“It is clear to anyone watching your crew work that PSG has a strong safety culture.”

“The Technical Field Advisor and his team kept us updated and there were no surprises.”

“Of the bids we reviewed for this job, PSG had the most aggressive schedule and then met that schedule. This was a planned 60 day outage that was shortened to 45, so meeting the planned restart date was critical.”

“No leak, no issues, no defects. Very impressive.”

“Very detailed outage report. Better than I am accustomed to seeing.”

“The proposal for the inspection was detailed and thorough. Likewise for all extra work generating during the outage.”

“Documentation was accurate and detailed.”

“I would be glad to have PSG here for our next outage.”

Steam Turbine Diaphragm Repairs

We have quite a few steam turbine diaphragms being repaired at our Midwest Steam Turbine Repair Facility right now.  If you have a need for diaphragm repairs on your steam turbine please contact us today.


Blade/Bucket Repairs and Replacements

There’s a lot happening in our Midwest Steam Turbine Repair Facility right now.  We’re performing blade/bucket change outs on a number of rotors this spring.  Contact us if you have any future blade/bucket repair or replacement needs.

Steam Turbine Repair Season is Here!

We have quite a few steam turbine rotors and diaphragm sets in the shop at the moment.  Turbine outage season is in full swing.  If you have any turbine repair needs please don’t hesitate to contact us.

March Safety Update

We’ve completed the month of March with zero OSHA-recordable injuries and have a TRIR of 0.00 for the year. We continue to be proactive in identifying potential hazards and maintaining our safety-first mindset. Great job by our HSE Director, Shannon Scruggs, our Repair Facility Management and Technicians, and each one of our Field Service Project Management teams for engraining our safety culture throughout the crews working at site. Nice job everybody!