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WEIZ POSITRON

Your Reliable Partner in Robotic Inspection
Conducting inspections and tests of all types

Supply of spare parts, materials, and tools for power generation equipment








Official Representative of:
BRUSH (Brush Electrical Machines), ANDRITZ (Andritz Hydro), ABB, ALSTOM
— the world's leading manufacturers of turbogenerators.

Key Services

  • Robotic Turbogenerator Inspection

    Robotic inspection without rotor removal. The robot significantly reduces the time and cost of inspection, enhancing reliability and generator uptime.

    This procedure assesses stator insulation condition and slot wedge tightness, making it a viable alternative to a major inspection requiring rotor removal. It is an indispensable solution where rotor extraction is impossible or highly challenging due to site constraints.

  • Turbogenerator Inspections

    We conduct all types of inspections, including robotic solutions. We repair turbogenerators from major international manufacturers: BRUSH, Andritz, Siemens, ABB, KATO, Leroy Somer, Alstom, General Electric.

    Our inspections are performed by top-tier specialists with over 20 years of experience in all inspection types, certified by the original equipment manufacturers. Major overhauls and A, B, C inspections are carried out strictly in accordance with manufacturers' service bulletins.

    Additional diagnostic services: EL CID, RSO test, Tangent Delta, Ultrasound diagnostics.

  • Turbogenerator Diagnostics

    • Partial Discharge (PD) insulation diagnostics;
    • Vibration analysis;
    • Generator thermal testing;
    • Stator winding wedge tightness assessment;
    • Stator core compaction assessment via ultrasound;
    • Detection of rotor winding turn-to-turn faults;
    • Stator and rotor winding insulation resistance measurement;
    • Bearing insulation resistance measurement;
    • Electromagnetic core imperfection detection (EL CID);
    • RSO test.

  • Spare Parts for turbogenerators by BRUSH, ANDRITZ, Siemens, ABB, KATO, Leroy Somer, Alstom, General Electric

    We ensure the delivery of spare parts for turbogenerators under current sanctions, including models from BRUSH Electrical Machines (BRUSH BDAX, BRUSH DG), ANDRITZ HYDRO (ELIN 6FA), Siemens, KATO, and Leroy Somer.

  • Tooling and Equipment

    The company possesses its own inventory with the necessary set of tooling and specialized equipment (Toolbox) to perform any type of work on power generation equipment. This includes both original manufacturer tools and custom tools manufactured by our design center to exact OEM specifications (e.g., Sliding Plates, rotor extension devices, rail-type rotor extraction systems).

  • Spare Parts for Gas and Steam turbines

    Original and OEM Spare Parts for GTUs: General Electric, Siemens, Ansaldo Energia, Alstom, Solar Turbines (Taurus 60, Centaur 40, Centaur 50).
    For Steam Turbines: Skoda, Ekol.

  • Manufacturing of Spare Parts for Gas Turbines and Turbogenerators.

    Reverse Engineering. Import Substitution.

    We manufacture spare parts for various units and mechanisms with the highest precision. This exceptional accuracy is achieved through the use of industrial 3D scanners and the latest coordinate measuring machines (CMM) from world-leading manufacturers ZEISS and DAIMLER, ensuring manufacturing tolerances down to 0,7 mkm.

  • Modernization and Tuning of Excitation Systems from:

    • BRUSH (Prismic)
    • Andritz Hydro Elin (Thyne)
    • Basler Electric (DECS 200, 250)
    • ABB (Unitrol 1000, 1010, 1020, Unitrol F, 6080)
    • General Electric (EX2001, EX21E, EX2100, EX2000)

    We perform modernization and tuning of excitation systems and their controllers for imported turbogenerators. All work—replacement, configuration, commissioning, and integration into the existing installation site—is executed by us as a turnkey solution.

  • Turbine Control Systems: Woodward 505, 505E, Micronet

    Tuning and Repair of Turbine Control Systems

  • General Electric RXI Controller Programming

    Configuration, Repair, and Programming of General Electric Controllers based on the RXI platform, including custom software (Soft) development for various projects.

diagnostics without dismantling of the equipment
ROBOTIC SOLUTION

  • Gap of 15 mm

    __

    The robot passes through the gap between the rotor and the stator

  • 4 cameras

    __

    For a detailed examination

    of visual defects

  • 3 examinations in one cycle

    Visual inspection

    Wedge tightness check (SWA)

    Electromagnetic core test (EL CID)

  • 5 control points

    __

    Stator winding

    Slot insulation

    Core laminations

    End regions

    Ventilation ducts

The result of the robotic inspection
General condition
Condition of the retaining rings (visual inspection)
Stator and active zone
Slot wedges and wedge tightness
Rotor and its components
Overall generator condition
High-frequency whistling and core lamination gaps
Remaining service life estimate
Our Partners
  • BRUSH Electrical Maсhines
    A leading global manufacturer of turbogenerators across all power ranges.
  • ANDRITZ Hydro GmbH
    A world leader in supplying electromechanical systems and services for power plants — the global market leader in hydropower.
  • EKOL Brno
    A major European manufacturer in the energy sector, specializing in cogeneration, as well as the construction and commissioning of complete power units with an electrical capacity of up to 100 MW.
  • GEA Refrigeration
    Turnkey industrial refrigeration systems for food and beverage production, process cooling solutions, and gas compression packages for the oil and gas industry.
  • Baker Hughes
    An American multinational corporation providing energy and industrial solutions worldwide.
Our Advantages
Quality Guarantee
All spare parts we supply come exclusively from original equipment manufacturers (OEMs) or certified OEM suppliers.
Delivery Time
Maximum delivery speed due to direct relationships with manufacturers. Reliable supply even under sanctions.
Premium Service
All work is performed by certified specialists with over 20 years of field experience.
In-House Team
A dedicated, highly skilled in-house team. Guaranteed project execution, independent of external circumstances.
WEIZ Positron LLC
421001, Republic of Tatarstan, Kazan,
79 Chistopolskaya Street, Office 11
Phone: +7 (843) 207-0-656
E-mail: info@weiz-ru.com
NEWS
Major Overhaul of BRUSH Turbogenerator

Employees of WEIZ Positron performed a scheduled capital inspection at a major petrochemical energy facility. The work was carried out on a Brush DG185ZL-04 synchronous turbogenerator.

During the operations, specialists extracted the rotor and inspected the stator and rotor of the turbogenerator. Based on the inspection results, the turbogenerator bearings were replaced, the stator winding end-turn insulation was restored, the operation of the Prismic A10 excitation system controllers was fine-tuned, and the stator was cleaned using dry ice.

All work was completed strictly according to the established schedule, preventing downtime for the CCGT maintenance personnel and ensuring the facility's reliable operation.



Gold in programming and bronze in robotics with support from WEIZ Positron.

The "Algorithms and Rationality" team, sponsored by WEIZ Positron, has achieved significant success in international competitions.

In Kazan, it won first place at the Art of Code 2024 programming championship and then secured a bronze medal at the FIRA RoboWorld Cup world robotics championship in South Korea.

Supporting promising IT specialists is part of WEIZ Positron's corporate strategy. These victories demonstrate the team's high level of preparation and the effectiveness of investments in developing technological talent.
We wish the team to continue striving for new achievements and victories!
Robotic inspection of the ELIN 6FA model turbogenerator at the Vologda CHPP.

WEIZ Positron LLC completed an in-depth robotic inspection within a tight deadline, significantly reducing the overall repair time.

This project was a logical continuation of our long-term work at the facility:

In 2019, company specialists investigated the source of a generator's high-frequency whistle.
In 2020, thermal performance tests of the gas turbine unit were conducted to define the operational range for the combined cycle unit for the System Operator.
In 2025, we executed an advanced robotic inspection of the generator using our own proprietary tooling.
Robotic inspection of the ANDRITZ Hydro turbogenerator
model 6FA

A robotic inspection was completed at a key energy facility in Kazan.
Within a tight timeframe, company specialists inspected an Andritz Hydro 6FA synchronous turbogenerator.

The inspection involved examining the stator and rotor of the generator, as well as checking the generator's wedge tightness and balancing plugs. Due to the robot's exceptionally compact design, we were able to inspect areas of the stator previously inaccessible to other robot models.
The inspection was completed in 2 days, ensuring there was no downtime for the maintenance personnel working on the CCGT unit.
Robotic inspection of the turbogenerator
ALSTOM 50WY21Z-095


Specialists of the company successfully completed a robotic inspection of the ALSTOM 50WY21Z-095 turbogenerator at a power generation facility in the Urals.

The uniqueness of this inspection was dictated by the generator's design feature — a minimal air gap between the stator and rotor. The inspection additionally required the use of special tooling for precise equipment positioning.
As a result, the technical condition of the turbogenerator was determined and recommendations for its further operation were provided.
Robotic inspection of the ABB AMS 1120 LK turbogenerator on an oil platform


Our company successfully performed a robotic inspection on an oil platform. The confined space conditions made it impossible to extract the rotor from the generator stator.

Together with the Customer, a decision was made to conduct a robotic inspection. The work was completed precisely on schedule. The robotic tooling demonstrated high effectiveness for use on turbogenerators. The data obtained during the inspection allows for an accurate assessment of the actual condition of the wedges, insulation, and ventilation ducts, and enables a conclusion to be drawn regarding the technical state of the turbogenerator.

Inspection robot



Company WEIZ Positron LLC has the capability to diagnose the condition of turbogenerators using the world's one of the slimmest in its class. Its thickness at the widest point is only 15 mm. Since the beginning of the year, inspections have been successfully performed on three generators with restricted access to the stator windings. Other known robotic tooling from leading global manufacturers could not overcome these technical challenges due to the narrowed entry gap of less than 12.5 mm.
This solution serves as an excellent alternative to performing a major inspection with rotor removal, saving both time and budget.
Typical duration for completing a robotic inspection: 2–5 days
Conducting a robotic inspection


Specialists of WEIZ Positron LLC successfully conducted a robotic inspection of a General Electric synchronous turbogenerator, which is part of the world's most efficient CCGT unit. The scope of work included a visual inspection of each stator winding, as well as wedge tightness control. The inspection was completed ahead of the scheduled plan.
Replacement of outdated Prismic A10 excitation system controllers with upgraded Prismic A50 units.
Specialists of WEIZ Positron LLC successfully completed the replacement of the Prismic A10 excitation system controllers on a BRUSH turbogenerator. The work was completed precisely on schedule, with no remarks from the Customer.
Major inspection of an ABB generator


A major inspection of an ABB-manufactured turbogenerator, including rotor extraction, was successfully completed at a site of an oil production company.
Additionally, EL CID, RSO, and ultrasound examination tests were performed. All work was completed precisely on schedule and in full.
Examination of the BRUSH-manufactured PMS equipment system for managing the power output of eight CCGT units.
Work was successfully completed to examine the PMS equipment system manufactured by BRUSH Electrical Machines, as well as its readiness for startup, at one of the largest natural gas production facilities.
Two major inspections, including rotor removal, of four-pole synchronous BRUSH DG model turbogenerators were successfully conducted.
Specialists from WEIZ Positron LLC successfully performed two major inspections, including rotor removal, of four-pole synchronous BRUSH DG model turbogenerators at a key facility in the Russian oil and gas sector. At the Customer's request, an EL CID test, ultrasound diagnostics, and additional electrical measurements were conducted.
The overhaul was carried out in accordance with the approved work schedule. A report and recommendations were provided.
Conducting a B-type inspection on a four-pole synchronous BRUSH DG model turbogenerator.
Our company, in accordance with the scheduled work plan, successfully performed a Type B inspection of a four-pole synchronous BRUSH DG model turbogenerator at the largest oil field in the Russian Federation. The work involved bearing removal and condition assessment, gap checking, and was carried out in strict adherence to the established work schedule. A report was compiled and recommendations for further operation were issued.

Manufacturing and supply of studs for Solar gas turbine units.
Our key customer urgently required studs for a CCGT unit. Our company successfully performed
3D scanning of the damaged elements, as well as modeling, manufacturing, and supply of spare parts for Solar Turbines CCGT units in the shortest possible time.

Испытания турбогенератора ANDRITZ Hydro Testing of the ANDRITZ Hydro turbogenerator.
Our company's personnel successfully conducted thermal performance tests on an ELIN 6FA turbogenerator manufactured by ANDRITZ Hydro GmbH.
The goal of the tests was to determine the current reactive power regulation range of the turbogenerator.
The tests were successfully completed. The report has been sent to JSC "SO UES".