CALGARY, Nov. 27, 2013 /CNW/ - The National Energy Board (NEB or Board) is responding to a pipeline rupture on the Nova Gas Transmission Ltd (NGTL) pipeline system approximately 14 kilometres southeast of Boyle, AB owned and operated by TransCanada Pipelines Ltd (TransCanada). The release was reported to the NEB late this morning. The size of the release has yet to be determined by the NEB. There is no immediate safety concern for local residents and precautions are being taken to ensure continued public safety.