| 摘要 |
A fuel gas supply device (100) is provided with: two shutoff valves (11, 12) provided in fuel gas piping (20) and closed in an emergency; upstream release piping (21) connected to the portion of the fuel gas piping (20), which is located between the two shutoff valves (11, 12); downstream release piping (22) connected to the portion of the fuel gas piping (20), which is located downstream of the shutoff valve (12) located on the downstream side, and joining to the upstream release piping (21); an upstream release valve (13) provided in the upstream release piping (21) and opened in an emergency; a downstream release valve (14) provided in the downstream release piping (22) and opened in an emergency; and a check valve (15) provided in the downstream release piping (22) and preventing fuel gas from flowing toward the fuel gas piping (20). |
