Triple containment tank

A triple containment tank comprising:

• a tank foundation;
• an outer tank including
• an outer tank bottom plate located on the tank foundation,
• a tubular outer tank side plate standing from the outer tank bottom plate, and
• an outer tank roof covering an upper portion of the outer tank side plate;
• an intermediate tank including
• an intermediate tank bottom plate located on the outer tank bottom plate through an outer bottom insulation layer,
• a tubular intermediate tank side plate standing from the intermediate tank bottom plate, and
• an intermediate tank roof covering an upper portion of the intermediate tank side plate;
• an inner tank storing a liquefied gas therein and including
• an inner tank bottom plate located on the intermediate tank bottom plate through an inner bottom insulation layer,
• a tubular inner tank side plate standing from the inner tank bottom plate, and
• an inner tank roof located at an upper portion of the inner tank side plate;
• a first anchor strap extending through a first inter-tank region that is an inter-tank region between the inner tank and the intermediate tank and a second inter-tank region that is an inter-tank region between the intermediate tank and the outer tank and coupling the inner tank side plate and the tank foundation;
• and
• a second anchor strap extending through the second inter-tank region and coupling the intermediate tank side plate and the tank foundation, wherein
• the first anchor strap includes
• a first end portion coupled to the inner tank side plate,
• a second end portion coupled to the tank foundation,
• a first intermediate portion located between the first end portion and the second end portion and coupled to an inner wall-side portion of the intermediate tank which is exposed to the first inter-tank region, and
• a second intermediate portion located between the first end portion and the second end portion and coupled to an outer wall-side portion of the intermediate tank which is exposed to the second inter-tank region,
• the first inter-tank region is filled with a vaporized gas of the liquefied gas;
• and
• the second inter-tank region is filled with a gas having a higher boiling point than the liquefied gas.

A triple containment tank comprising:

• a tank foundation;
• an outer tank including
• an outer tank bottom plate located on the tank foundation,
• a tubular outer tank side plate standing from the outer tank bottom plate, and
• an outer tank roof covering an upper portion of the outer tank side plate;
• an intermediate tank including
• an intermediate tank bottom plate located on the outer tank bottom plate through an outer bottom insulation layer,
• a tubular intermediate tank side plate standing from the intermediate tank bottom plate, and
• an intermediate tank roof covering an upper portion of the intermediate tank side plate;
• an inner tank storing a liquefied gas therein and including
• an inner tank bottom plate located on the intermediate tank bottom plate through an inner bottom insulation layer,
• a tubular inner tank side plate standing from the inner tank bottom plate, and
• an inner tank roof located at an upper portion of the inner tank side plate;
• a first anchor strap extending through a first inter-tank region that is an inter-tank region between the inner tank and the intermediate tank and a second inter-tank region that is an inter-tank region between the intermediate tank and the outer tank and coupling the inner tank side plate and the tank foundation;
• and
• a second anchor strap extending through the second inter-tank region and coupling the intermediate tank side plate and the tank foundation, wherein
• the first anchor strap includes
• a first end portion coupled to the inner tank side plate,
• a second end portion coupled to the tank foundation,
• a first intermediate portion located between the first end portion and the second end portion and coupled to an inner wall-side portion of the intermediate tank which is exposed to the first inter-tank region, and
• a second intermediate portion located between the first end portion and the second end portion and coupled to an outer wall-side portion of the intermediate tank which is exposed to the second inter-tank region,
• the intermediate tank bottom plate includes
• a first coupling portion located at the inner wall-side portion, and
• a second coupling portion located at the outer wall-side portion;
• and
• the first anchor strap includes
• a first strap body extending from the first end portion coupled to the inner tank side plate to the first intermediate portion coupled to the first coupling portion, and
• a second strap body extending from the second intermediate portion coupled to the second coupling portion to the second end portion coupled to the tank foundation, and
• at least one of the first intermediate portion and the second intermediate portion is pin-joined.

A triple containment tank comprising:

• a tank foundation;
• an outer tank including
• an outer tank bottom plate located on the tank foundation,
• a tubular outer tank side plate standing from the outer tank bottom plate, and
• an outer tank roof covering an upper portion of the outer tank side plate;
• an intermediate tank including
• an intermediate tank bottom plate located on the outer tank bottom plate through an outer bottom insulation layer,
• a tubular intermediate tank side plate standing from the intermediate tank bottom plate, and
• an intermediate tank roof covering an upper portion of the intermediate tank side plate;
• an inner tank storing a liquefied gas therein and including
• an inner tank bottom plate located on the intermediate tank bottom plate through an inner bottom insulation layer,
• a tubular inner tank side plate standing from the inner tank bottom plate, and
• an inner tank roof located at an upper portion of the inner tank side plate;
• a first anchor strap extending through a first inter-tank region that is an inter-tank region between the inner tank and the intermediate tank and a second inter-tank region that is an inter-tank region between the intermediate tank and the outer tank and coupling the inner tank side plate and the tank foundation;
• and
• a second anchor strap extending through the second inter-tank region and coupling the intermediate tank side plate and the tank foundation, wherein
• the first anchor strap includes
• a first end portion coupled to the inner tank side plate,
• a second end portion coupled to the tank foundation,
• a first intermediate portion located between the first end portion and the second end portion and coupled to an inner wall-side portion of the intermediate tank which is exposed to the first inter-tank region, and
• a second intermediate portion located between the first end portion and the second end portion and coupled to an outer wall-side portion of the intermediate tank which is exposed to the second inter-tank region,
• the intermediate tank bottom plate includes
• an annular plate located at a peripheral portion of the intermediate tank bottom plate and
• a bracket fixed to the annular plate and the intermediate tank side plate at the inner wall-side portion of the intermediate tank;
• the first anchor strap includes
• a first strap body extending from the first end portion coupled to the inner tank side plate to the first intermediate portion coupled to the bracket and
• a second strap body extending from the second intermediate portion coupled to the outer wall-side portion of the intermediate tank side plate to the second end portion coupled to the tank foundation;
• and
• the second anchor strap is integrated with the second strap body or is lined up with the second strap body.