Fusible Plug or Link 1 : An emergency shutdown device activated by fire or thermal overload. (Note: fusible links below the ignition point in a wellhead may not be activated (melted))
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}