Shutdown Valve (SDV) is an emergency shutdown valve in process control that work as safety device when there is emergency.
The Emergency Shutdown Valve, ESDV acts as a safeguard against exceeding setpoint pressure. During normal operation, the valve remains open
A shutdown valve (also referred to as SDV or Emergency Shutdown Valve, ESV, ESD, or ESDV) is an actuated valve
WHCP: Wellhead Control Panel WHCPs are also known as Shutdown Panels (SDP), Emergency Shutdown Systems (ESD) or Hydraulic Safety Shutdown System