Expert Answers

RTS offers a wide range of in house stocked blade material. Working closely with our customer we can determine operating temperature, atmosphere conditions and water conditions. This allows RTS to recommend the optimum blade material and/or coating.

Most likely no. RTS will work closely with our customer if and/when a design change is needed. RTS can also supply custom made grove tools to insure a flawless fit when loading new blades. RTS also supply’s root plug samples to customers to confirm proper blade fit prior to manufacturing.

Since fatigue cracks generally begin as surface imperfections, shot peening can greatly reduce the formation of surface cracks and malformations of the blade root.

Depending on the bucket size and shape, RTS can deliver a small row of buckets (under 2” tall) in less than 10 days.

RTS has Portable Slow Speed Balance Machines with capacities of up to 200,000 lbs. that can ship to your site. Our Certified Technicians can perform the balance at your facility and provide full data reports.

No, we can do that here for you. We have a 14’ x 14’ x 26’ Deep Sandblast booth at our facility and we can also perform all of the NDT (Non-Destructive Testing) activities on your components here as well.

We have an excellent scheduling system in place to provide all of our customers with a quick turnaround time, even during peak outage season. The repair facility is operating 24 hours a day to make sure everyone receives their repaired parts as quickly as possible to minimize outage duration. RTS employs more qualified turbine repair technicians than any other privately owned company in the country.

Our shop is fully equipped to handle large steam turbine rotors, shells, casings and all related component repairs. With a complete large capacity welding and machine shop, we provide our customers a full service repair solutions; from incoming inspections to executing extensive repairs.

Our repair facility is located in Sullivan, Missouri – just Southwest of St. Louis. Being centrally located allows us to quickly and efficiently service all of our customers. Our facility is conveniently located ¼ mile off Interstate 44 to allow for easy truck access to get your parts into, and out of, our shop as quickly as possible.

At RTS we utilize Microsoft Project to create a comprehensive outage schedule well before the job starts. We will identify and discuss possible areas of conflict or uncertainty and discuss contingency plans with you so that you are prepared beforehand. If scope of work changes during the job, RTS has the repair and manufacturing capabilities to make sure we are ready for any emergent situation that may arise. Our different divisions – OCIC, Repair, Manufacturing, and Generator Services will work together to ensure you receive the most efficient schedule possible. Your schedule is a top priority to everyone at Reliable Turbine Services.

RTS is able to offer the complete outage service package. As soon as you are ready to discuss your project we will outline all of the services you would like performed and develop a plan to maximize the benefits that we could offer you to allow you to sleep easy during the outage. At RTS, we don’t feel an outage should be a strenuous experience for the plant personnel with long hours and no days off. RTS is able to offer you a single point of contact for your outage and we will manage the entire project. With RTS’ parts reverse-engineering and manufacturing capabilities we can take care of any part that may need to be replaced during the outage. RTS is the largest privately owned turbine repair company in the country, we can bring our qualified technicians to your site, or send the parts to our shop, to perform almost any repair required. RTS is able to perform any testing, inspection, or repairs that may be needed on your Generator as well. Your Electrical Engineers will be in direct contact with a designated RTS Generator Specialist to make sure your Generator is operating efficiently. All of these services wrapped up into RTS’ Total Outage Management philosophy will give you the peace of mind that one company is taking responsibility for your outage. This will allow us to offer you the most efficient outage schedule, eliminate change orders that are typical when hiring multiple companies for a single outage, and free you up to do whatever it is that you may need to do. We truly care about all of our customers and we want you to choose RTS for all of your equipment maintenance needs.

We provide inspection, maintenance, and repair services on various pieces of equipment that you may have at your facility. We perform projects on Steam Turbines from 5MW to over 800MW. Some common turbine designs that we work on are Allis Chalmers, Alstom, GE, Fuji, Hitachi, Mitsubishi, Siemens, Westinghouse, as well as many others. Our Generator Services group has a strong OEM background and can perform test, inspect, and repair on almost all generators from any OEM, gas or steam driven. We also perform maintenance on various other BOP (Balance of Plant) equipment such as fans, gearboxes, pumps, motors, mechanical seals, heat exchangers, seal oil systems, control oil systems, lube oil systems, valves ( gas, steam, water), and much more.

A main benefit from offering multiple services such as repair and parts manufacturing is the fact that our field service teams work together with our repair and manufacturing facilities to minimize the impact of an unexpected part replacement or repair. We can quickly ship the damaged part to our manufacturing facility in Houston, Texas to be reverse-engineered and begin manufacturing a new part. Having all of these capabilities backing our Field Service teams is what makes an RTS outage so efficient.

At RTS, we work diligently to make sure we completely understand what you would like to accomplish during your outage. We believe it is in our best interest and yours if the scope of work is clearly defined and we have identified any areas that may result in a change order if extra work is deemed necessary. This not only helps with an accurate proposal, but manpower, equipment necessities, and schedule as well. We don’t just want to work with you on this job – we want to work with you on all of your projects!

At RTS, we utilize a Time and Material spreadsheet that is updated every morning and sent to you by 12:00 Noon each day. This spreadsheet was developed with the input of our customers so that we could be sure that you are receiving the information you need each day. The T&M spreadsheet is completed by one of RTS’ certified Project Control Specialists in the corporate office each morning, so you will receive it regardless of how busy everyone may be at the jobsite.

We work directly with our customers in the area of outage preplanning, work scope development, and outage schedule development which can be distributed for competitive bid. We believe proper outage planning is the key to a successful project, we want to help in any way possible to ensure your success.

We have a staff of Project Managers, TA’s (Technical Advisors) and Supervisors from all of the different OEM’s (Original Equipment Manufacturers) to ensure the proper expertise for your unique outage needs.

We have former OEM-trained Supervisors and TA’s (Technical Advisors) available for your specific unit, as well as OEM-Experienced Craft Labor that we can augment your staff with to ensure a Safety and Quality first outage execution.

At RTS, Safety is our #1 priority. During the initial meeting at your facility and walk-down of the unit, we will be checking for potential safety hazards and work with you on a plan to minimize the risks of those hazards. Each morning, before work ever begins, the entire RTS Field Services team will have a meeting to specifically discuss the safety hazards that will exist during the execution of that day’s scheduled activities. Throughout the day, before we begin work on a specific hazardous activity, we will perform a JHA (Job Hazard Analysis) to make sure that each person working around the piece of equipment at that time is aware of the possible dangers that exist and is taking the necessary precautions so that no injuries occur. At the end of each shift we perform general Housekeeping activities, not only because we are guests at your plant, but because a turbine deck is much safer if it is kept clean and clear of obstructions.

Being the largest non-OEM turbine repair company in the industry we have a large staff of over 70 certified repair technicians that can show up at a moment’s notice to minimize the impact to your outage schedule.

With our Rapid Response units, we can generally have tools and personnel mobilizing to site within 8 hours of notification.

Some of the more common field repairs consist of Stud removal, Valve refurbishment, Journal refurbishment, Thrust Collar refurbishment, Stationary and Rotating Component repairs, Stationary and Rotating Seal replacement/refurbishment.

Being the largest non-OEM turbine repair company in the industry we have a large staff of over 70 certified repair technicians that can show up at a moment’s notice to minimize the impact to your outage schedule.

RTS would recommend performing a Bump Test to identify any sections of the winding that have systemic or localized resonance issues close to the driving frequency of 120 Hz on a 60 Hz machine. Based on the results, RTS can design a fix including re-blocking & re-tying to change the units resonance band to a higher frequency, far from the units driving frequency. RTS would also apply an End Winding Stiffening Treatment to re-establish all of the epoxy bond planes to re-secure all loose components.

Testing at a lower voltage today makes the test less risky but increases risk during future operation. Testing at a higher voltage puts more risk on today, while providing confidence that the unit can run reliably into the future. OEM’s recommend a test value of 1.5xE, but RTS feels that a more conservative 1.25xE in most cases is a good compromise.

The first thing is to determine if the issue is related to the excitation system, or with the generator. If the unit is brushless, then isolate the rotating diode wheel from the field winding and perform tests on both sides. If the unit has static excitation, remove all brushes and test the field and buswork separately. RTS has a testing protocol for investigating deeper if the issue is in fact within the rotor circuit.

Reliable’s experience is that if the stator cooling water system (SCWS) has leaks, the higher hydrogen pressure can leak into the SCWS. RTS would recommend performing SCWS dryout and test, similar to the OEM’s HIT skid testing.

Once you have ruled out issues with the test equipment and setup, it is a good idea to place the three phases electrically in series by connecting T2 to T4, and T3 to T5, then inject DC current from T1 to T6 and let that “heat soak” for about 45 minutes with about 1,000 amps per square inch of winding cross sectional area. After about 30-45 minutes, a thermography camera should identify any “hot spots”. Often times, high impedance connections due to loose hardware, bad brazes, or broken strands can cause high resistance readings.