What is an all-electric surface actuator and how reliable is it?
Electrification of the surface gate valve actuator and its modular control system brings new reliability and simplicity to remote valve actuation. The digitalization possible with electric control systems provides the means for robust, discrete condition-based monitoring and alarming to significantly reduce operational risk.
Cameron, a Schlumberger company, designed the all-electric surface actuator to meet API Specification 6A. Qualification proved its reliability, executing 400 cycles, equivalent to a 30-year life. The electric actuator is third-party certified to safety integrity level (SIL) 2 standards and its control system, with built-in redundancy, is SIL 3 certified. Cameron is the first in the industry to achieve full Technical Readiness Level 5 (TRL 5) per API RP 17N for the electric actuator and control system, which involved flow loop testing at pressures up to 140 bar and flow rates up to 14.5 MMm3/d.