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Wind & Renewable Energy

Wind & Renewable Energy Inspection, Maintenance, and Rope Access Services


Inspection at Height
Wind Turbine Grinding
Wind Tower Lab Testing
Wind Turbine Inspection
AUT Tech
Turbine Installation
Rope Access Inspection
Rope Access On Wind Turbine

MISTRAS specializes in safely accessing, inspecting, and repairing wind turbines and hydroelectric assets, with a focus on ensuring safe and efficient operations and minimizing downtime of the asset.

The general public increasingly relies on renewable energy sources, making their continued operation of crucial importance. At the same time, environmental factors such as precipitation or lightning strikes, along with the extreme stress from normal operating conditions, can lead to asset degradation over time.

MISTRAS performs inspection and maintenance services on onshore and offshore utility-scale wind turbines and farms, hydroelectric dams, solar panels, and all related componentry, including:

  • Bearings
  • Blades
  • Couplings
  • Gates
  • Gearboxes
  • Ladders
  • Nacelles
  • Spillways
  • Tainter Gates
  • Towers
  • Turbines

Our technicians are backed by years of industry experience in performing services safely and efficiently in order to help our clients optimize maintenance spending and ensure safe operations.

Safe and Cost-Effective Access Strategies for Wind and Hydroelectric Assets

Utilizing rope access, unmanned aerial vehicles (UAVs/drones), and fall protection solutions, we safely access all components of wind turbines without the use of lifts, scaffolding, or cranes, enabling our technicians to complete inspection and maintenance efficiently and economically. We also supply trained diving technicians to inspect and repair underwater dam and offshore wind turbine components.

MISTRAS also designs, manufactures, and installs fall protection solutions. We work directly with our clients to design the exact solution they need, taking into account materials of construction, load rating, project needs, and other factors to ensure the safety of all personnel.

Wind Turbine Inspection and Composite Testing Services

MISTRAS’ wind turbine inspection services ensure that your assets operate safely and efficiently while remaining free of damages. We access all wind turbine components for field inspections with cost-effective, quick, and safe access methods, and we also perform lab testing on newly-fabricated and existing components to determine the root causes of damages.

Wind Turbine Blade Inspection Services
  • Ground-Based Photography
  • Internal and External Non-Destructive Testing (NDT) Inspection, including ultrasonic inspection (UT), visual inspection (VT), and phased array (PAUT)
  • Lightning Protection System Inspection and Testing
  • Root Cause Analysis
  • Spotting Scope Inspection
  • Ultrasonic Scanning of Rotor Blades
Wind Turbine Composite Lab Testing Services

MISTRAS helps you solve problems before they start with our destructive testing (DT) and mechanical testing, and metallography services.

Our lab testing solutions support wind turbines throughout development, process certification, production, and potential damage analysis stages. Our CFRP/GFRP testing centers help you to find the best possible materials for nacelles and blades, and to ensure their material properties before manufacturing.

In our state-of-the-art testing labs, we use multiple methods to test for and confirm material strength and durability, including but not limited to:

Wind Turbine Maintenance and Mechanical Services

MISTRAS has the capabilities to provide mechanical services, ensuring that all parts of your wind power facility are operating without flaws or structural insecurities.

We keep costs and downtime to a minimum by providing multi-disciplined technicians that perform both inspection and maintenance services, including:

  • Bolt Torque Testing and Tension
  • Bolt Replacement and Extraction
  • Bus Bar Repair and Replacement
  • Ladder Repair and Section Replacement
  • Deck Replacement
  • Yaw Lip Seal Replacements
  • Blade Shroud Replacements
  • Cable Slack Repair
Wind Turbine Blade Repair Services

Wind turbine blades are routinely subjected to extreme operating conditions. Manufacturing defects and the stress they are routinely subjected to during normal operations can combine to accelerate blade degradation. Other damages we inspect for and repair include:

  • Leading-Edge Erosion
  • Bond-Line Failures
  • Moisture Intrusion
  • Freeze/Thaw Cycling
  • Transportation
  • Lightning Damage

MISTRAS’ trained rope access technicians provide inspection and maintenance services that keep wind turbine blades durable and reliable. Our goal is to keep your wind turbine blades spinning safely and efficiently.

Our blade repair services include:

  • Aerodynamic Profile Upgrades
  • Construction, Assembly, and Installation Support
  • Cleaning and Cosmetic Damage Maintenance
  • Cracking Repair
  • Installation of Leading Edge Protection Systems
  • Laminate and Coating Repair
  • Leading Edge Erosion
  • Lightning Strikes
  • Split Trailing Edge
  • Spoiler Removal and Installation
Wind Turbine Tower Repair Services

MISTRAS’ tower services ensure that wind turbine towers have solid structural integrity while also maintaining a clean and attractive appearance, including:

  • Cleaning
  • Coating/Painting
  • Weld Inspection
  • Mast Inspection
  • Caulking
  • Dent Removal
Wind Turbine Nacelle Repair Services

Wind turbine nacelles serve the important role of housing the generating components of wind turbines. MISTRAS’ nacelle services ensure that critical turbine componentry remains efficiently covered and protected, along with improving the physical appearance of the nacelle. Services include:

  • Cleaning
  • Composite Repairs
  • Weather Station Replacement/Repair

Wind Turbine Structural Health Monitoring (SHM)

MISTRAS offers structural health monitoring (SHM) systems and services that provide in-service condition-tracking and alarms for critical wind turbine components. These systems can be installed on both onshore and offshore wind farms, and are used to monitor:

  • Dynamic Load: Stress loads (torque, RPM, lubricant, angular momentum, etc.
  • Electrical Faults: Arcing, grounding, rub, and electrical load imbalance
  • Rotor Imbalance: Asymmetric pitch, blade cracking, imbalance, misalignment, and eccentricity
  • Surface Defects: Bearing faults (location & isolation), gear faults, and shaft faults
  • Lubricant: Effectiveness and breakdown
  • Wear: Mechanical wear cracks and spalls, looseness, rubbing, and seals

Hydroelectric Dam Facility Inspection & Maintenance Services

MISTRAS provides inspection, repair, and maintenance solutions for hydroelectric power generation facilities.

Erosion and corrosion, combined with pressure, loads, and stress from operational and environmental factors, can cause serious damage in hydroelectric facilities. Defects in hydroelectric power plants not only present safety hazards, but can also cause serious damages for the people and communities that rely on hydroelectric utilities to power their homes and companies.

MISTRAS hydroelectric inspection and testing solutions include:

  • Coupling, Bearing, and Gearbox Inspection
  • Gate & Spillway Inspection
  • Generator/Switchgear Testing
  • Lube Oil Systems
  • Nondestructive Examination (NDE)
  • Piping & Underground Piping Inspection
  • Stop Valve Testing
  • Turbine Inspection Services

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