Section 112.50 - Cargo Transfer System Valves(1) All cryogenic or hazardous fluid cargo transfer systems shall have at least one remotely operated valve at the cargo transfer station. Emergency shut-off valves for LNG and other cryogenic or hazardous fluid cargo transfer systems shall be designed to be:(a) manually operable at the valve;(b) power operable at the valve; and(c) power operable at a remote location at least 50 feet from the valve.(2) Cargo transfer systems equipped with a check valve to prevent backflow from the storage tank are exempt from the requirements of 220 CMR 112.50(1).Amended by Mass Register Issue 1432, eff. 12/11/2020.