دانلود کتاب اندازه گیری ضخامت اولتراسونیک کشتی ها

The objective of this class guideline is to describe methods and procedures for ultrasonic thickness measurements (UTM) performed in connection with class surveys. The purpose of UTM is to perform nondestructive measurement of local thickness of ship structures. Thickness measurements are an essential part of class surveys as corroded steel plates may look perfectly acceptable even at close-up distance. This class guideline provides guidance to class requirements for thickness measurements. In case of discrepancies between this document and the rules for classification, the rules shall prevail. Condition assessment program (CAP) is not covered by this class guideline. This class guideline applies to all types of steel ships classed with the Society, except for CSR vessels. For CSR vessels, see IACS UR Z10.1 to 10.5. This class guideline (CG) is intended for ship owners, operators, yards and service suppliers approved for thickness measurements of ship’s structure and will provide a common understanding of the procedures for ultrasonic thickness measurements (UTM) related to class surveys.