Method for making test specimen and test equipment to evaluate the safety of piping

Abstract

Provided herein is a test equipment for evaluating safety of a piping for use in nuclear power plants, the test equipment having a test specimen made of a same material as the piping, and having a notch cut from a first surface which is an end portion of the test specimen, with a crack formed at an end portion of the notch; and a load applier connected to the test specimen to apply a load in a direction perpendicular to a direction in which the notch is cut, wherein a pair of pin holes are connected to the load applier such that they are arranged to be distanced from each other along the direction of the load applied to the test specimen, and a central point is provided in a space between a second surface opposing the first surface and an end portion of the crack. Therefore, according to the present disclosure, there is provided a test equipment for evaluating safety of a piping capable of conducting a highly reliable safety evaluation using a test specimen having a same stress gradient as the piping actually constructed when a load is applied.