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 method can include energizing a tube with a longitudinally extending magnetic field generated inside the tube, using a magnetic field-detecting logging tool to generate magnetic flux signals generated inside the tube externally of the material of the tube wall resulting from such energizing at circumferential locations on the inner surface of the tube and at distances along the tube, iteratively using a model of the relationship between the generated magnetic flux signals and the thickness of the tube wall to derive a thickness profile of the tube wall by using (i) the magnetic permeability of the tube material deduced from the magnetic flux signals and (ii) a defect-free flux parameter representative of any non-linearity between the magnetic field strength and flux density in the tube, the iteration including using the model to calculate an initial approximate wall thickness profile using an initial estimate of the defect-free flux parameter.

A reinforcement bar corrosion evaluation device capable of efficiently and quantitatively evaluating a degree of corrosion of reinforcement bar in a reinforced concrete (RC) deck bridge. includes: an acquisition section configured to acquire reflection response data related to a reflection response of electromagnetic waves irradiated from a surface of the reinforced concrete deck bridge in a depth direction of a deck panel, a removal section configured to remove a surface frequency component obtained by the electromagnetic waves being reflected at an asphalt concrete layer of the deck panel from a frequency distribution of a reflection response expressing the reflection response data acquired by the acquisition section, and an evaluation section configured to evaluate a degree of corrosion of the reinforcement bar in the deck panel by using a first measurement peak value in the frequency distribution of the reflection response from which the surface frequency component has been removed by the removal section, which is a peak value of a level of a frequency component of a first frequency band, and using a second measurement peak value therein, which is a peak value of a level of a frequency component of a second frequency band that is a higher frequency band than the first frequency band.

An occluded hydrogen content estimation method implemented by an occluded hydrogen content estimation device performs an occluded hydrogen content estimation step in which, based on an occluded hydrogen unit content which is a content of hydrogen occluded in a metal due to a change in humidity from a wet state to a dry state, a period after the metal is placed, and meteorological data corresponding to the period for an area where the metal is located, a content of occluded hydrogen that is absorbed in the metal for the period after the metal is placed is estimated. In the occluded hydrogen content estimation step, the occluded hydrogen content is estimated by multiplying the number of rainfalls in the meteorological data by the occluded hydrogen unit content.

An electronic apparatus includes a wiring board. The wiring board also includes a first wiring pattern that is provided on the wiring board and includes a first wiring portion extending in a first direction. The wiring board further includes a second wiring pattern that includes a second wiring portion extending in the first direction. The wiring also includes a first via provided on the first wiring portion, and a second via provided on the second wiring portion. A power supply circuit applies a first voltage to the first wiring portion at periodic time intervals. A detection circuit outputs an alert signal when a current flows through the second wiring pattern.

A corrosion rate estimation device for estimating a corrosion rate of a metal disposed in a predetermined environment includes an input unit that inputs water component information including information such as water content (time), temperature, conductivity, soil type, and the like, a corrosion rate estimation model configured to receive the water component information related to a water component contained in the predetermined environment as an input, and estimate the corrosion rate of the metal disposed in the predetermined environment from the water component information, and an output unit that outputs the estimated corrosion rate of the metal to the outside. The corrosion rate estimation model is generated using, for example, a machine learning algorithm such as a random forest, a neural network, or RNN (LSTM).

Techniques for determining a thermal condition of a pipeline include identifying a pipeline that carries a fluid at a steady-state temperature, where the pipeline includes a tubular conduit that includes a bore that carries the fluid, and a layer of insulation installed over an exterior surface of the tubular conduit; changing the steady-state temperature of the fluid by applying a thermal contrast to the pipeline; based on changing the steady-state temperature, detecting a thermal gradient between the fluid carried in the bore and at least one of the tubular conduit or the layer of insulation at a particular location of the pipeline; and based on the detected thermal gradient, determining a presence of at least one of water or water vapor between the exterior surface of the tubular conduit and the layer of insulation at the particular location of the pipeline.

A metal material corrosion loss mapping method includes creating a corrosion loss prediction map by using corrosion loss data including a use period of a metal material, a plurality of environmental parameters, position coordinates of the environmental parameters on a map, topographical data of the map, and a corrosion loss of the metal material. The metal material corrosion loss mapping method includes: an environment map creation step of creating an environment map at certain mesh intervals based on the environmental parameters, the topographical data of the map, and the position coordinates of the environmental parameters; a prediction request point input step; a similarity degree calculation step; a corrosion loss prediction step; and a corrosion loss prediction map creation step of creating a corrosion loss prediction map by coloring a prediction result of the corrosion loss at the prediction request point in the mesh.

A corrosion amount estimation apparatus that estimates the corrosion amount of a metal material buried in the ground, the apparatus including: a soil adjustment unit that dries the target soil; a water permeability measurement unit that measures the water permeability of the soil after supplying water to the dried soil; and a corrosion estimation unit that estimates the corrosion amount of the metal material when buried in the soil using the water permeability.

The method for a corrosion resistance test of a coated metal material is an electrochemical method simulating corrosion proceeded by damaged portions in the surface treatment film 4. Two artificially damaged portions 5 spaced from each other in a coated metal material 1 that is obtained by providing a surface treatment film 4 on a metal base 2 are electrically connected to each other by an external circuit 11 via an aqueous electrolyte material 6, and corrosion proceeds by supplying current using one of the artificially damaged portions 5 as an anode site and the other as a cathode site.