A chemical storage tank assembly for storing sulfuric compounds includes a plurality of bricks that is each comprised of basalt. In this way each of the bricks can resist ingress of sulfuric compounds into the bricks. The plurality of bricks are arranged to define a floor, a plurality of walls and a roof of a storage tank to contain sulfuric compounds. A grout is positioned between each of the bricks for binding the bricks together to define the storage tank. Additionally, the grout is comprised of calcium silicate to resist the ingress of sulfuric compounds into the grout.

A chemical storage tank assembly for storing sulfuric compounds includes a plurality of bricks that is each comprised of basalt. In this way each of the bricks can resist ingress of sulfuric compounds into the bricks. The plurality of bricks are arranged to define a floor, a plurality of walls and a roof of a storage tank to contain sulfuric compounds. A grout is positioned between each of the bricks for binding the bricks together to define the storage tank. Additionally, the grout is comprised of calcium silicate to resist the ingress of sulfuric compounds into the grout.

An integrated passive cooling containment structure for a nuclear reactor includes a concentric arrangement of an inner steel cylindrical shell and an outer steel cylindrical shell that define both a lateral boundary of a containment environment of the nuclear reactor that is configured to accommodate a nuclear reactor and an annular gap space between the inner and outer steel cylindrical shells, a concrete donut structure at a bottom of the annular gap space, and a plurality of concrete columns spaced apart azimuthally around a circumference of the annular gap and extending in parallel from a top surface of the concrete donut structure to a top of the annular gap space. The outer and inner steel cylindrical shells and the concrete donut structure at least partially define one or more coolant channels extending through the annular gap space.

An integrated passive cooling containment structure for a nuclear reactor includes a concentric arrangement of an inner steel cylindrical shell and an outer steel cylindrical shell that define both a lateral boundary of a containment environment of the nuclear reactor that is configured to accommodate a nuclear reactor and an annular gap space between the inner and outer steel cylindrical shells, a concrete donut structure at a bottom of the annular gap space, and a plurality of concrete columns spaced apart azimuthally around a circumference of the annular gap and extending in parallel from a top surface of the concrete donut structure to a top of the annular gap space. The outer and inner steel cylindrical shells and the concrete donut structure at least partially define one or more coolant channels extending through the annular gap space.

A storage system for storing compressed fluid is described. The system includes an excavation made in the ground, a balloon arrangement mounted within the excavation. The balloon arrangement includes a rebar cage and an inflatable balloon arranged within the rebar cage. The inflatable balloon has a middle portion and two end portions. One end portion includes a balloon inlet port, whereas the other end portion includes a balloon outlet port. The system also includes a filling material fully surrounding the inflatable balloon and configured for providing further reinforcement in conjunction with the rebar cage to the inflatable balloon, and for anchoring the inflatable balloon to the excavation. The system also includes a gas pipe assembly including an inlet gas pipe coupled to the balloon inlet port for filling the inflatable balloon with compressed fluid, and an outlet gas pipe coupled to the balloon output port for releasing the compressed fluid.

A storage system for storing compressed fluid is described. The system includes an excavation made in the ground, a balloon arrangement mounted within the excavation. The balloon arrangement includes a rebar cage and an inflatable balloon arranged within the rebar cage. The inflatable balloon has a middle portion and two end portions. One end portion includes a balloon inlet port, whereas the other end portion includes a balloon outlet port. The system also includes a filling material fully surrounding the inflatable balloon and configured for providing further reinforcement in conjunction with the rebar cage to the inflatable balloon, and for anchoring the inflatable balloon to the excavation. The system also includes a gas pipe assembly including an inlet gas pipe coupled to the balloon inlet port for filling the inflatable balloon with compressed fluid, and an outlet gas pipe coupled to the balloon output port for releasing the compressed fluid.

An integrated passive cooling containment structure for a nuclear reactor includes a concentric arrangement of an inner steel cylindrical shell and an outer steel cylindrical shell that define both a lateral boundary of a containment environment of the nuclear reactor that is configured to accommodate a nuclear reactor and an annular gap space between the inner and outer steel cylindrical shells, a concrete donut structure at a bottom of the annular gap space, and a plurality of concrete columns spaced apart azimuthally around a circumference of the annular gap and extending in parallel from a top surface of the concrete donut structure to a top of the annular gap space. The outer and inner steel cylindrical shells and the concrete donut structure at least partially define one or more coolant channels extending through the annular gap space.

An integrated passive cooling containment structure for a nuclear reactor includes a concentric arrangement of an inner steel cylindrical shell and an outer steel cylindrical shell that define both a lateral boundary of a containment environment of the nuclear reactor that is configured to accommodate a nuclear reactor and an annular gap space between the inner and outer steel cylindrical shells, a concrete donut structure at a bottom of the annular gap space, and a plurality of concrete columns spaced apart azimuthally around a circumference of the annular gap and extending in parallel from a top surface of the concrete donut structure to a top of the annular gap space. The outer and inner steel cylindrical shells and the concrete donut structure at least partially define one or more coolant channels extending through the annular gap space.

A lining method includes fixing a backing strip in a frame shape to a concrete surface of already-placed concrete so that the backing strip protrudes from the concrete surface; disposing a filler inside a frame of the backing strip; making edges of a plurality of lining plates butt against each other at a position of the backing strip to cover the backing strip and the concrete surface; and joining the edges of the lining plates by seal welding.

An integrated passive cooling containment structure for a nuclear reactor includes a concentric arrangement of an inner steel cylindrical shell and an outer steel cylindrical shell that define both a lateral boundary of a containment environment of the nuclear reactor that is configured to accommodate a nuclear reactor and an annular gap space between the inner and outer steel cylindrical shells, a concrete donut structure at a bottom of the annular gap space, and a plurality of concrete columns spaced apart azimuthally around a circumference of the annular gap and extending in parallel from a top surface of the concrete donut structure to a top of the annular gap space. The outer and inner steel cylindrical shells and the concrete donut structure at least partially define one or more coolant channels extending through the annular gap space.