a fire and rescue authority in Wales, constituted by a scheme under section 2 of the Fire and Rescue Services Act 2004 or a scheme to which section 4 of that Act applies.
awdurdod tân ac achub yng Nghymru a sefydlwyd gan gynllun o dan adran 2 o Ddeddf Gwasanaethau Tân ac Achub 2004 (p.21), neu gynllun y mae adran 4 o’r Ddeddf honno yn gymwys iddo