Portable cargo handling equipment for liquid hydrogen and emergency release method

Portable cargo handling equipment for liquid hydrogen,

• the portable cargo handling equipment being located between a ship-side cryogenic tank and a land-side cryogenic tank and transferring the liquid hydrogen from one of the ship-side cryogenic tank and the land-side cryogenic tank to the other, the portable cargo handling equipment comprising:
• a liquid hydrogen pipe through which the liquid hydrogen is guided and which includes:
• a first joint connectable to an end portion of a ship-side liquid pipe extending from the ship-side cryogenic tank and
• a second joint connectable to an end portion of a land-side liquid pipe extending from the land-side cryogenic tank;
• an emergency release coupling located at the liquid hydrogen pipe;
• a first shutoff valve located at a portion of the liquid hydrogen pipe which is located between the emergency release coupling and the second joint;
• and
• an atmosphere open structure including:
• an atmosphere open passage including one end communicating with a portion of the liquid hydrogen pipe which is located between the first joint and the first shutoff valve, and the other end that is open to an atmosphere,
• an on-off valve that opens and closes the atmosphere open passage, and
• a heater that is located at the atmosphere open passage and heats the liquid hydrogen guided by the atmosphere open passage or a hydrogen gas generated by evaporation of the liquid hydrogen and guided by the atmosphere open passage,
• wherein a second shutoff valve is located at the ship-side liquid pipe,
• wherein the portable cargo handling equipment further comprises circuitry configured to control opening and closing operations of the first shutoff valve and opening and closing operations of the second shutoff valve,
• wherein the circuitry controls the opening and closing operations of the first shutoff valve and the opening and closing operations of the second shutoff valve so as to close the first shutoff valve and the second shutoff valve before the emergency release coupling is uncoupled, and
• wherein the circuitry controls opening and closing operations of the on-off valve so as to open the on-off valve after the first shutoff valve and the second shutoff valve are closed.