From the GWO website:

The aim of this module is to enable the participants to perform single rescuer advanced rescue operations, in a WTG hub, spinner and inside teh blade by using industry standard rescue equipment, methods and techniques, exceeding those of GWO s Working at Heights Standard.

Based on the participants HSIBR module qualifications, the single rescue (SR:HSIBR) module shall ensure that participants are able to:

• Assess and determine single rescuer rescue strategy (relevant rescue method, technique, certified equipment and how to organize the rescue efforts and incident scene) for various rescue scenarios, in a WTG hub, spinner and inside a blade.
• Apply rescue methods and techniques in performing descending and ascending single rescuer rescue operations, from a WTG hub, spinner and inside a blade using:  a rescue stretcher and transfer board; manually operated lowering/raising rescue system for limited distance rescue (rescue device, pulley system or similar); and other rescue equipment relevant to the participant.