Activities SC B5 is currently composed of : Advisory Groups assisting the Chairman in the definition of strategic and customer oriented directions ; Working Groups with unambiguous terms of reference and predetermined time limits, all approved by the Technical Committee of CIGRE ; Task Forces which duty is to prepare terms of reference for potential Working Groups ; For more information, please have a look at the Structure page or at the Summary Chart (see link hereunder). Summary chart of currently active WG's/TF's