SCSSV : Surface Controlled Subsurface Safety Valve. An SSSV controlled from the surface by hydraulic, electrical, mechanical or other means. (RP 14B, Spec 14A)
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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}