Blades are the most sensitive and critical equipment of the turbines due to being exposed to variable mechanical loads and extreme environmental conditions. For this reason, the blades must be continuously checked at all stages from production to operation.

The main causes of common blade damages are the use of improper materials, poor quality manufacturing, transport and assembly errors.

For this reason MORE recommends periodical checks of the blades.
- External check: Blade checks are done with rope access, drone or high resolution camera system from the ground
- Internal check.
- Checks of lightning receptors and doing resistance measurements
- Checks during the production.