Failure 07 : Any condition of the SSSV system that prevents it from performing the design function of preventing uncontrolled well flow; e.g., inability to close due to breakage, erosion, corrosion or fouling. (RP 14B, Spec 14A)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}