Abstract: A passive fire protection system for the protection of articulating joints and flexible connections against flame and heat in a severe total environment type fire such as a hydrocarbon fire which includes multi-layered flexible protective covers on articulating joints and flexible connections. These multi-layered flexible covers comprise an outer section of one or more layers of cloths, the outer section being of an abrasion resistant, weatherproof outer layer, with a woven ceramic fiber to resist flame impingement, and reinforcement mesh and stitching as required. The inner section is a thick interior multi-layered composite blanket of ceramic fibrous materials, barrier films, and an inner layer of abrasion resistant cloth to minimize heat transfer to the articulating joint or flexible connection. The thickness of the interior layer is determined by the mass being protected and the height of the allowable temperature for a particular fire rating.