title: Oxygen regulator fire caused by use of two yoke washers.
mesh_terms: D004868:Equipment Failure; D005390:Fires; D006801:Humans; D010100:Oxygen; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation*; D012121:Respiration, Artificial / Q000295:instrumentation*
chemical_list: D010100:Oxygen