Services

Services We Provide

  • Outage/Turnaround Services
  • Rotating Equipment Repair
  • Machine Shop Services
  • Portable CMM (Faro) Services
  • Reverse Engineering
  • Dimensional Verification
  • Quality Control
  • Rotor Balancing
  • Gear Box Repair
  • 3D CAD – SolidWorks

Turbine Repair

Compressor Repair

Trip & Throttle Repair

Pump Repair

Gearbox Repair

Blower Repair

Equipment Worked On

Turbine, Trip and Throttle, Compressors

  • Full DCI
  • Curing Oven
  • Line Boring
  • Vibration Analysis
  • Dynamic Balancing
  • Precision Alignment
  • Preventative Maintenance
  • Bearing & Seal Installation
  • Governor Conversions
  • Mechanical Seal Conversions
  • Component Manufacturing
  • Bearing Reconditioning
  • Axial Alignment Verification
  • Complete Overhauls

Turbine OEMs

Elliott, Turbodyne, Worthington, Coppus, Dresser-Rand, Murray, Terry, Skinner, General Electric (GE), Dean Hill

Trip and Throttle OEMs

Schutte & Koerting, Gimpel, Mitsubishi, Elliott, Turbodyne, Worthington, Coppus, Dresser-Rand, Murray, Terry, Skinner, General Electric (GE)

Compressor OEMs

Seimens, Delaval, Atlas Copco, Joy, Elliott 80M, Elliott PAP, York, Worthington, Nash, Centac, Gardner Denver, Ingersoll Rand, Roots, Instrument Air, Mill, Carrier, Dekker

Pumps, Gearboxes, Blowers

  • Full DCI
  • Curing Oven
  • Line Boring
  • Vibration Analysis
  • Dynamic Balancing
  • Precision Alignment
  • Preventative Maintenance
  • Bearing & Seal Installation
  • Mechanical Seal Conversions
  • Component Manufacturing
  • Bearing Reconditioning
  • Axial Alignment Verification
  • Replacement Gear Supply
  • Complete Overhauls

Pump OEMs

Goulds, Ingersoll-Rand, Aurora, Worthington, Bingham, Johnson, Sulzer, United, Demag, Rickmeier, Johnstone, Fabricate, Allis Chambers, Peerless, National, Flowserve, Byron-Jackson, Union, Nash, Bell-Gosset, Allied, Saladin, Pacific, IMO DeLaval, Centac, Triplex, Buffalo Forge, Hydracell, Weirs, Morse Fairbanks, DeLaval, Sundyne

Gearbox OEMs

Marley, Falk, Amarillo, Lufkin, Kobelco, Hansen, Johnson, KSB, IMO, Western, Nutall, Sundyne, Conedrive, Philadelphia, Chemineer, Kissling, Randolph

Blower OEMs

Hoffman, Elliott, Spencer, Gardner Denver, Tuthill, New York, Roots, Hauck, Ceilcote

Turnaround/Machine Shop

Turnaround/Outage Support

  • 24 hour coverage available
  • Rotating Equipment Repair
  • Machine Shop Services
  • Portable CMM (Faro) Services
  • Reverse Engineering
  • Dimensional Verification
  • Quality Control
  • Rotor Balancing
  • Gear Box Repair
  • 3D CAD – SolidWorks

Machine Shop

Services

  • Line boring
  • Milling/Turning
  • Welding/Fabrication
  • Reciprocating compressor liner removal/reinstallation
  • CAD Design/Reverse Engineering
  • Parts manufacturing

Specs

  • Vertical Boring Mills up to 89” swing
  • Lathes- 28” Swing, 120” between centers
  • 3 Horizontal Boring Mills up to 156” Table Cross travel and 96” Headstock Vertical travel
  • Surface Grinding – 50” Diameter
  • Balancing up to 30,000 pounds
  • 40 Ton Overhead Crane Capacity
  • NDE (Magnetic Particle and Fluorescent Penetrant
  • Blast Cleaning
  • Faro Arm (Reverse Engineering)
  • Curing oven to prevent steam leaks
  • Replacement Turbines
  • Three balance machines with capability up to 30,000 lbs.

Frequently Asked Questions

What is steam?

Steam can somewhat be compared to mice. It’s amazing just how small of an opening is needed for mice to move about freely both in and out of a structure. Steam is kind of like a “one way” mouse. Steam seeks out every avenue of escape, moving from high pressure to low pressure.

The forces of escaped steam can be extremely destructive. The velocity and pressure of steam can cause cuts through the toughest of materials. Steam cuts grow at an always accelerated rate as the escape path gets larger.

This results in the destruction of the turbine itself. Escaped steam lowers the efficiency and run life of the turbine and, adds a safety hazard to those working in close proximity of the machine. The escaped vapor then migrates towards the bearing housings, thereby contaminating the lubrication system, further reducing the turbines reliability.

Our deeper investigation into this problem brought up the following areas of concern
(Or, what we call – The Quest For The Better Mouse Trap):

  • Are the split lines being adequately prepared?
  • Does sealant need to be better looked at?
  • Is the proper grade of bolting being used?
  • What are the proper torquing sequences and techniques?
  • How does a “run test” affect proper sealing of a turbine?
  • Is there adequate follow-up once the turbine has been installed at the plant? What about start up procedures?
  • Steam quality? (this item is beyond our control)
Are the split lines being properly prepared?

Common practice at CTS is to completely disassemble the turbine, breaking apart both the horizontal and vertical split lines. Split lines are then ground to remove steam cuts and any other damage. Split lines are to be cleaned up to have at least an 80% contact. 100% is desirable but not always attainable if the damage to the case was indeed too severe. The horizontal split lines on the bearing housings are also cleaned up. The housings have to be lined up with the case and the ID’s need to be re-bored to make up for metal that was removed from the split line of the housing.

What sealant do you use?

Several types of sealant have been used over the years. These include Copaltite, SilverSeal and Linseed Oil. Each type of sealant has its merits, but at CTS we primarily use Copaltite. There are cases where the split lines have been too badly pitted to clean up. In this case, Temptite String is added to the split lines (inside of the bolt holes) in order to better fill-in imperfections and improve sealing. Copaltite, as with other sealants, has one inherent problem. In order to be effective, the sealant has to be properly cured. In many cases where there was initial leakage at the split lines, it was found that the sealant had been “blown out”. This is a good indication that the sealant was never properly cured in the first place. There is the assumption (and we know what that word means) that the sealant will be properly cured in the field as part of the start-up procedure. This was not always the case.

What bolting do you use?

Grade “8” is used for bolting
Grade “B-7” is used for studs.

Torquing sequences and techniques and other considerations?

Bolt Torquing and sequencing is a critical part of turbine assembly. It is often either overlooked or performed improperly. Most manufacturers specify Torquing sequences and procedures in their turbine manuals. Beyond the manufacturer’s instructions, a few other steps must be taken in order for the procedure to be completed.

  1. First hand – tighten ALL bolting until they are snug.
  2. Following the “crisscross” pattern as illustrated below.
  3. Torque each bolt (or nut) to 50% of the desired torque.
  4. Following the same pattern, begin again, this time
    Torquing to 100% of desired amount of torque. As each bolt is tightened, mark each bolt with a paint pen or Sharpie to indicate that the bolt is tight.
What is the "Run Test" (Air Test)

Completed turbines are “run test” on air to check for leakage, vibration, misalignment, and over-speed trip.
Considerations for “Run Test”

  • Do not over pressurize – you can blow out sealant
  • Since this test is run on air, you may introduce moisture
    into the interior of the case
What is the CTS - The Better Mouse Trap method

In MANY cases proper start-up procedures are not followed once the turbine is ready to run in the plant. Has the turbine been pre-heated properly to allow for a uniform distribution of heat throughout the case?! This is important in that improper start – up can cause distortion leading to steam leakage or leakage due to not having cured the sealant properly. As a turbine re-builder, we have to assume that the turbine will not be properly pre-heated.
So – HERE IS WHAT WE HAVE IMPLEMENTED!

CTS – Our Better Mouse Trap

There is a Better Mouse Trap – a better way of sealing turbines. It doesn’t involve any single item listed above, but a combination of ENHANCED repair procedures and techniques.

The Better Mouse Trap – The Oven

Compressor and Turbine Services has carefully reviewed leakage problems on small turbine split lines and has ultimately changed our method of small turbine repair. Our thoughts are that turbine repair procedures must be changed in order to facilitate the proper sealing of small turbines.

Our Procedure

  1.  Horizontal and vertical joints will be ground to improve finish.
  2. Sealant will be properly cured PRIOR to leaving our facility. Turbines are to be heated to a temperature as specified by the sealant manufacturer. The desired temperature will be held for a specified duration.
  3. Bolting will be as specified:
    Grade “8” is used for bolting
    Grade “B-7” is used for studs
    Nuts, washers, and studs will be used on the main body of the turbine. This will eliminate the chances of a “bottoming out” in cases where studs are used. Bolting with washers will be used on the packing boxes and bearing housings.
  4. Proper Torquing procedures will be used as per Item number 4 (as described above).
  5. Turbines will be pressurized to 100 psi or less during testing to reduce the risk of “blowing out” the sealant.
  6. Turbines will be “tagged” with suggested procedures for start-up and installation upon shipment.
  7. The Better Mouse Trap – As noted above, turbines are heated in our oven (Mouse Trap) prior to shipment. This will help to insure that the sealant has cured, the paint has dried, and that moisture is removed from the interior of the turbine. Bolting torque will again be checked.

Once again, we feel that these enhanced repair techniques will provide our customers with a more efficient, and reliable turbine. Our goal is to be the BEST turbine repair facility in the business!

Get In Touch

Contact Us

Phone: 281-598-1873

Address: 901 Old Genoa Red Bluff
Houston, TX 77034

Get Directions

Skip to content