| 摘要 |
<p>PROBLEM TO BE SOLVED: To inexpensively confirm abnormality of gas piping while maintaining quality.SOLUTION: A method for confirming abnormality of piping includes: a simulation joint connection step for connecting a first pipe 51 to gas piping 2 through an attachment 53 by using the first pipe 51 simulating a joint 3 and the attachment 53 of which one end can be connected to the first pipe 51 and the other end can be connected to the gas piping 2; a simulation case connection step for attaching a cap 54 to a second pipe 52 by using the second pipe 52 simulating piping 41 and the cap 54 allowed to be attached to one end of the second pipe 52 and simulating a case 4 and abutting an open end of the second pipe 52 on an open end of the first pipe 51; a welding step for circulating shield gas in the first and second pipes 51, 52 through the gas piping 2 and welding an abutting portion between the first pipe 51 and the second pine 52 over the whole periphery; and a leakage check step for performing collective leakage check for the gas piping 2.</p> |
