Turning system for wind turbine blade parts

A method of preparing a turning system for turning wind turbine blade shell part carriers between an open position and a closed position, the method comprising the steps of:

• providing a turning system comprising:
• a lower blade shell part carrier having a support surface for receiving and supporting a lower wind turbine blade part,
• an upper blade shell part carrier having a support surface for receiving and supporting an upper wind turbine blade shell part, the support surfaces of the lower and upper blade shell part carriers being able to receive a respective blade shell part in the open position, and the support surface of the upper blade shell part carrier is turned over on the support surface of the lower blade shell part carrier in the closed position,
• at least one turning device comprising:
• a lower hinge element;
• a turning hinge having a lower hinge part, an upper hinge part, and an actuator configured for turning the lower and upper hinge parts relative to each other about a turning axis;
• and
• means for securing the lower hinge element to a stationary surface,
• securing the lower hinge element of the at least one turning device to the stationary surface,
• positioning the lower blade shell part carrier over the lower hinge element of the at least one turning device,
• attaching the lower hinge element to the lower hinge part of the turning hinge, and
• attaching the upper hinge part of the turning hinge to the upper blade shell part carrier so that the at least one turning hinge can move the blade shell part carriers between the open position and closed position.