Apparatus and methods for monitoring the status of a floating roof. The floating-roof tank assembly has: an impermeable roof section, and a floating-roof seal configured to span between the impermeable roof section and components of a container. One or more deformable floats are attached to the roof section to provide buoyancy so that the roof floats on top of the liquid contained in the container. To monitor the status of the floating roof tank, it is provided with a fiber optic sensor array comprising one or more fiber optic sensors. A light source configured to transmit light to the fiber optic sensors and a receiver configured to detect light from each fiber optic cable after it has interacted with the fiber optic cable. Based on the received light, a controller configured to process the light received by the receiver to determine the status of the floating roof tank.

Apparatus and methods for measuring the deformation in a floating-roof seal assembly. A fiber optic cable is attached along its length to the floating-roof seal assembly such that the fiber optic cable is deformed when the floating-roof seal assembly is deformed. Deformation of the fiber optic cable and the seal assembly can be determined based on how the light interacts with the fiber optic cable. This helps allow tanks with a floating roof to be monitored.

Apparatus and methods for measuring the deformation in a floating-roof seal assembly. A fiber optic cable is attached along its length to the floating-roof seal assembly such that the fiber optic cable is deformed when the floating-roof seal assembly is deformed. Deformation of the fiber optic cable and the seal assembly can be determined based on how the light interacts with the fiber optic cable. This helps allow tanks with a floating roof to be monitored.

An insulating disc can be easily installed and removed from inside a riser of a septic tank. The insulating disc is seated atop an opening of the tank lid and seals around the riser inner surface. The disc can include a core formed of R-10 extruded polystyrene sandwiched between two layers of high-density polyethylene. A flexible gasket can extend outward from the disc to seal against the inner surface of the riser. Retention tabs can also be provided to center and hold the disc in place. The disc can be divided into two semicircular halves that are hinged together. A hook, eyebolt and/or rope can be used to aid in removing the disc from the riser.

An insulating disc can be easily installed and removed from inside a riser of a septic tank. The insulating disc is seated atop an opening of the tank lid and seals around the riser inner surface. The disc can include a core formed of R-10 extruded polystyrene sandwiched between two layers of high-density polyethylene. A flexible gasket can extend outward from the disc to seal against the inner surface of the riser. Retention tabs can also be provided to center and hold the disc in place. The disc can be divided into two semicircular halves that are hinged together. A hook, eyebolt and/or rope can be used to aid in removing the disc from the riser.

A storage tank inner wall and floating disc totally enclosed apparatus includes a tank body, floating disc, pressure relief balance structure and a flexible sealing body structure, wherein the floating disc is arranged in the tank body, the edge of the floating disc is provided with an outer frame, the outer frame is provided with a plurality of sealing structures, the top of the inner wall of the tank body is provided with an annular support, one end of the flexible sealing body structure is fixedly connected with the annular support, the other end of the flexible sealing body structure is fixedly connected with the outer frame, one end of the pressure relief balance structure is sequentially and fixedly connected with the flexible sealing body structure and the annular support, and the joint of the annular support is provided with a through hole.

A storage tank inner wall and floating disc totally enclosed apparatus includes a tank body, floating disc, pressure relief balance structure and a flexible sealing body structure, wherein the floating disc is arranged in the tank body, the edge of the floating disc is provided with an outer frame, the outer frame is provided with a plurality of sealing structures, the top of the inner wall of the tank body is provided with an annular support, one end of the flexible sealing body structure is fixedly connected with the annular support, the other end of the flexible sealing body structure is fixedly connected with the outer frame, one end of the pressure relief balance structure is sequentially and fixedly connected with the flexible sealing body structure and the annular support, and the joint of the annular support is provided with a through hole.