Field Services

Diagnostics and Inspection Services

Borescope Inspection Services

Power Engineering Services and Solutions uses the most advanced technology in remote visual inspection offered in the field service for internal inspection of machinery with borescope equipment, always at the right time.

The inspection service will help the customer know immediately the state of integrity of its equipment, allowing their personnel to witness the conditions of the machinery, optimizing times for decision making.

PESS uses high technology and for its services with specialized personnel who operate an Olympus digital borescope.

High Resolution Photography and Video

  • Photographs
  • Online image data-base
  • Efficient way to improve the Predictive Maintenance Program

Machine Degradation?

  • Know the conditions of your equipment and improve maintenance planning
  • PESS uses state of the art technology for its inspections

Know the integrity of the Equipment

  • Discover cracks, erosion, rust, thermal fatigue, and internal damage in turbo-machinery and equipment
  • Record foreign object damage (FOD) on internal components
  • Side by side comparison of previous inspection images, identifying changes in the present condition
  • Identification of deposits, and external material of Turbine, Motor, Generator, Boiler, etc…

Monitoring of Machinery Condition

  • Update your equipment fleet to Intelligent Machinery using advanced technology and statistical process data
  • Analysis and diagnosis of potential failures.
  • Historic trace of component performance
  • Real time identification of part life cycle limits

Reduction in Maintenance Costs

  • Significant improvement in Return On Assets (ROA)
  • Automated history of machine specific maintenance
  • Tracking by asset serial number, including own maintenance report portfolio
  • Specific asset work programs “What requires to be done?” and “When must it be done?”
  • Components are identified by the use and severity of their life limit

Predictive Maintenance Program

  • Maintenance personnel will know the details of each inspection and the conditions of the machinery fleet.
  • Operators in the mill will know ahead of time of unwanted situations

Example Images

This service is focused on taking into consideration the typical problems of a generating plant. A series of solutions have been designed to present and collect information which will facilitate the detection and forecasting of problems.

Axial cracks with length of 1 and 2 inches observed in the suction section in the first stage of gas turbine 7FA +e.

General condition at the edge of the first stage of the blades of a gas turbine 7FA+e.

View of the cutting edge of the first nozzle stage of a gas turbine 7FA+e.

Loss of material caused by oxidation. 1st stage gas turbine blades 7FA+e.

High loss of material caused by oxidation in the inner part of the walls of the first stage of the blades of a gas turbine 7FA+e.

View of the IGVs of a turbine 7FA+e.

View of vane of 1st stage of the compressor rotor of a gas turbine 7FA+e.

Damaged blade edge in the 2nd stage of a 7EA gas turbine.

Vibration Analysis and Machinery Diagnostics

PESS includes in its service portfolio, calibration and startup of new vibration monitoring systems; assisted by an engineer specialized in data acquisition, vibration analysis, and rotational machinery diagnosis, we can help you implement the best solution in minimum time.

Having this high technology allows PESS to perform an on site diagnosis of your machinery, temporally connecting the DAIU 208 system to the Bently Nevada 3300/3500 rack and obtain performance curves of the turbines and issue a recommendation to eliminate or reduce the problem.

Field turbo-machinery Maintenance


Mechanic maintenance ensures that the parts of the rotational equipment (turbines and compressors) operate within the parameters specified by the manufacturer, avoiding excessive waste of the components, which might derive into a main failure of the equipment. (Major maintenance, combustion inspection, hot part inspection, component repair)

Control and Instrumentation

Maintenance and troubleshooting of control and instrumentation of the equipment. These procedures are vital to a reliable operation and secure high availability of the equipment. (Calibration of Instrumentation, failure detection in the control system, etc.)


Maintenance of the electric system of power generation equipment. This maintenance prevents system failures in the electric equipment. (Generator re-winding, electric tests, etc.)

Diagnostics and Inspection Services

Borescope Inspection Services

Using a borescope, internal components of equipment are inspected to secure their integrity without the need of disassembling the equipment.

Vibration Analysis

This service detects problems with vibrations of the rotational equipment. Through collected information, the failure can be diagnosed and adequate recommendations issued to eliminate the vibration (e.g. balancing, alignment, etc.)

Non-destructive Testing

Essays using penetrating or magnetic particle products that help diagnosing the integrity of the components.

Thermal Performance Tests

Evaluates the thermal performance of the equipment in terms of power, heat rate, and issues recommendations to optimize operation.


PESS has designed the following courses oriented to users, operators, shift-chiefs, and maintenance.

  • Operation and Maintenance of Gas Turbines
  • Turbine Control Systems
  • Excitation Systems

These courses are customized for each client based on the configuration of the facility.

Thermal Performance Tests

The thermal performance test in gas turbines is an important tool for decision-making and helps reduce uncertainty in generation costs as in the economic impact of a modification in the gas turbine.

Performance tests for Gas Turbines

  • Delta Performance Test
    • Tests performed before and after a programmed shut down.
  • Absolute Performance Test
    • Reference of each unit (different from that of design); it is used for adequate decision making.
  • Performance Evaluation based in the ASME PTC 22 Protocol
    • For guarantee validation in new and modernized units.
  • Calibration of Precision and Facility Instruments
    • To avoid the minimal deviations in certain readings, which generate inefficiencies in the operation. Performance Monitoring for Gas Turbines.

Thermal-Economic Evaluation

Delta Performance Test

  • Establish production costs
  • Determine operation margins
  • Evaluate market conditions
  • Determine Return on Investment of maintenance and operation activities

Evaluation of Thermal Performance

  • Technical Evaluation
  • Understand the thermal performance at different environmental conditions
  • Evaluate opportunity areas to improve thermal performance
  • Develop a scale to compare the thermal performance of different turbines
  • Thermal performance guarantee validation


  • Understanding on the consequence of current operational practices
  • Validation of performance changes after programmed maintenances (Combustion Inspections, Hot Gases, Major Maintenances, etc.)


If you want to get a quote of our services, have doubts about it or just want to send us a message, get in touch with us.