Pressure cycle life test method for high-pressure gas containers, how to use the gas supply system, and gas supply system

摘要

PROBLEM TO BE SOLVED: To appropriately manage the life of a high-pressure gas container used in a gas supply system to extend the life of a pressure cycle test method, and to supply a gas capable of extending the life of a high-pressure gas container. The usage of the system and the gas supply system are provided. SOLUTION: This is a pressure cycle life test method for a high-pressure gas container in which stress amplitudes of various values that accompany filling and release of high-pressure gas repeatedly act, after the maximum stress amplitude σa is applied to the high-pressure gas container. A stress amplitude applying step in which the stress change when the stress amplitude σb is continuously applied to the high-pressure gas container is a repeated stress change of one cycle, and damage to confirm the presence or absence of damage due to cycle fatigue failure in the high-pressure gas container. A pressure cycle of a high-pressure gas container including a confirmation step and a determination step of determining that the stress amplitude σb has no effect on cycle fatigue failure when it is determined that the high-pressure gas container is not damaged in the damage confirmation step. Life test method. [Selection diagram] Fig. 1