(1) An electrical, pneumatic, or mechanical linkage to the facility; or
(2) An electronic voice communications system continuously operated by a person on the facility who can stop the flow of oil or hazardous material immediately.
(b) The point in the transfer system at which the emergency means stops the flow of oil or hazardous material on the facility must be located near the dock manifold connection to minimize the loss of oil or hazardous material in the event of the rupture or failure of the hose, loading arm, or manifold valve.
(c) For oil transfers, the means used to stop the flow under paragraph (a) of this section must stop that flow within -
(1) 60 seconds on any facility or portion of a facility that first transferred oil on or before November 1, 1980; and
(2) 30 seconds on any facility that first transfers oil after November 1, 1980.