Section 250.832 - Additional safety equipment-subsea trees(a) You must equip all tubing installations that have a wireline- or pump down-retrievable subsurface safety device installed after May 31, 1988, with a landing nipple, with flow couplings, or other protective equipment above and below it to provide for the setting of the device.(b) The control system for all surface-controlled SSSVs must be an integral part of the platform ESD.(c) In addition to the activation of the ESD by manual action on the platform, the system may be activated by a signal from a remote location.