A modular mounting assembly and system is disclosed that permits a wide variety of accessory items to be easily coupled and uncoupled to a vertical surface. In certain embodiments, the vertical surface may be a surface of an above ground storage tank. A saddle is fixedly coupled to the vertical surface and slidably mates with a shelf mount that is fixedly coupled to an upper portion of an accessory item support. To maintain the accessory item support in place, relative to the vertical surface, a side mount is fixedly mounted on the vertical surface. It is disposed below the saddle, and removably couples with a lower portion of the accessory item support.

A modular mounting assembly and system is disclosed that permits a wide variety of accessory items to be easily coupled and uncoupled to a vertical surface. In certain embodiments, the vertical surface may be a surface of an above ground storage tank. A saddle is fixedly coupled to the vertical surface and slidably mates with a shelf mount that is fixedly coupled to an upper portion of an accessory item support. To maintain the accessory item support in place, relative to the vertical surface, a side mount is fixedly mounted on the vertical surface. It is disposed below the saddle, and removably couples with a lower portion of the accessory item support.

A storage tank apparatus and a method for determining a bottom plate health for the apparatus is disclosed. A storage tank apparatus includes a tank foundation having a bottom plate support surface and at least one foundation tube housed inside at least one foundation channel, a bottom plate, a tank shell, at least one shell tube, at least one foundation inspection window, at least one shell inspection window and testing equipment that is operatively connected to the foundation tube and shell tube. A method for determining a bottom plate health for a storage tank apparatus includes operatively connecting the testing equipment to the foundation tube and shell tube, measuring a first and a second level of corrosion respectively, accessing the testing equipment by a computer processor, storing the first and second level of corrosion and determining the bottom plate health while the storage tank apparatus is in service.

A storage tank apparatus and a method for determining a bottom plate health for the apparatus is disclosed. A storage tank apparatus includes a tank foundation having a bottom plate support surface and at least one foundation tube housed inside at least one foundation channel, a bottom plate, a tank shell, at least one shell tube, at least one foundation inspection window, at least one shell inspection window and testing equipment that is operatively connected to the foundation tube and shell tube. A method for determining a bottom plate health for a storage tank apparatus includes operatively connecting the testing equipment to the foundation tube and shell tube, measuring a first and a second level of corrosion respectively, accessing the testing equipment by a computer processor, storing the first and second level of corrosion and determining the bottom plate health while the storage tank apparatus is in service.

A transport container, featuring a bottom plate with at least two holes for accommodating means of attachment for affixing fixed, track, or swiveling casters, a plate (1) affixed from the inside to the bottom plate for affixing fixed, track, or swiveling casters on the bottom plate of the transport container. The mounting plate (1) features a base plate (2) with a contact surface (1a), which faces the inside of the transport container in its assembled state, for placement onto the transport container. At least two means of insertion (3) are evenly distributed along the perimeter of the base plate (2), which protrude with an insertion area (7) from the contact surface (1a) of the base plate (2) and which each respectively feature an internal thread (5) and/or an external thread for affixing of the fixed, track, and swiveling casters in or on the insertion area (7), wherein the means of insertion (3) are disposed in the holes of the bottom plate.

A fluid storage tank has a base structure, perimeter columns extending upward from the base structure and a flexible bladder contained within the perimeter columns to define a boundary of the tank. The base structure is arranged to be supported on a supporting foundation to span a bottom of the tank. The upright columns are releasably coupled to the base structure and extend upward at circumferentially spaced apart positions about a perimeter of the tank in a working position of the columns. The upright columns are collapsible from the working position to a transport position in which the columns are arranged to be bundled alongside ne another. The flexible bladder is coupled to the upright columns and contains a fluid within the tank in the working position while being collapsible within the columns into the transport position.

Method of handling proppant at a well site using a plurality of modular proppant containers in which first and second modular proppant container in a filled state are removed from delivery transport vehicles and transferred to first and second cradle positions on a support structure using one or more heavy-duty handlers. Proppant is discharged by gravity feed from the outlet of the first and second modular proppant containers and directed to a hopper until the modular proppant containers are in an empty state.

Method of handling proppant at a well site using a plurality of modular proppant containers in which first and second modular proppant container in a filled state are removed from delivery transport vehicles and transferred to first and second cradle positions on a support structure using one or more heavy-duty handlers. Proppant is discharged by gravity feed from the outlet of the first and second modular proppant containers and directed to a hopper until the modular proppant containers are in an empty state.

A base for a cargo container including a bottom plate, a top plate, risers, and a bracket. The top plate has a top surface that faces away from the bottom plate. The risers interconnect the top plate and the bottom plate. The bracket extends between the top plate and the bottom plate and is configured to maintain a distance between the top plate and the bottom plate. The bracket is replaceable from the base without access to the top surface of the top plate.

A base for a cargo container including a bottom plate, a top plate, risers, and a bracket. The top plate has a top surface that faces away from the bottom plate. The risers interconnect the top plate and the bottom plate. The bracket extends between the top plate and the bottom plate and is configured to maintain a distance between the top plate and the bottom plate. The bracket is replaceable from the base without access to the top surface of the top plate.