Abstract: A metal pipe corrosion monitoring device includes a steam introduction unit for introducing thereinto steam flowing through a metal pipe; and a corrosion testing unit provided in the steam introduction unit, characterized in that the steam introduction unit is configured to generate condensed water by condensing some of the steam to create a simulated environment similar to an actual environment in the metal pipe and discharge the condensed water above a predetermined water level to the outside. The corrosion testing unit has one or more contact members that contact with a water line region around a water surface of the condensed water in the steam introduction unit, a water phase region on a condensed water side and a vapor phase region on a steam side, and is configured to be able to measure an electric resistance of the one or more contact members.

Abstract: The corrosion-resistant test device installed in a flow path of a system which needs a corrosion-resistant test, the corrosion-resistant test device including: a chamber to which a test liquid is supplied; a test piece mounting member for mounting a test piece rotatably and immovably in the chamber; a nozzle body having a reference surface opposed to a test surface of the test piece mounted on the test piece mounting member and connecting the chamber to the flow path; and means for moving the nozzle body with respect to the test surface, wherein the means for moving the nozzle body is configured to move the nozzle body toward the test surface of the test piece so as to allow the reference surface to come into contact with the test surface of the piece and to coordinate the test surface with the reference surface.

Abstract: A metal pipe corrosion monitoring device includes a steam introduction unit for introducing thereinto steam flowing through a metal pipe; and a corrosion testing unit provided in the steam introduction unit, characterized in that the steam introduction unit is configured to generate condensed water by condensing some of the steam to create a simulated environment similar to an actual environment in the metal pipe and discharge the condensed water above a predetermined water level to the outside. The corrosion testing unit has one or more contact members that contact with a water line region around a water surface of the condensed water in the steam introduction unit, a water phase region on a condensed water side and a vapor phase region on a steam side, and is configured to be able to measure an electric resistance of the one or more contact members.

Abstract: The present invention provides a surface treatment method for suppressing the formation and growth of superheated steam oxide scale on an iron-based metal surface exposed to superheated steam, comprising treating said iron-based metal surface with a surface-treatment agent which comprises a polyoxy saturated aliphatic mono- or di-carboxylic acid or a salt thereof and an amine compound represented by the following formula (I): Z(CH2CH2NH)nCH2CH2NH2??(I) wherein Z represents H or OH or NH2 group, and n is an integer of 0-5.