Osaka Gas Network uses and operates a governor seismic shutoff system and a remote monitoring shutoff system by installing a seismic sensor (SI sensor) in about 3,000 district governors.
These systems are designed to prevent earthquake disasters by utilizing both the automatic seismic shutoff function, which automatically stops the gas distribution when a seismic sensor detects an earthquake for each district governor, and the remote shutoff function, which safely stops the gas distribution to damaged areas by determining the damage in the supply area.They also contribute greatly to ensuring stable supply of gas and safety and reducing maintenance costs, as described below.
The pressure value and flow rate value of the supplied gas can be automatically measured and saved at regular intervals via the communication line from the center system, which is installed at the office. The supply status is checked regularly to ensure a stable supply of gas.
If the gas pressure and flow rate exceeds the normal range, the center system sends an alarm and sounds the buzzer immediately so that emergency response staff can take action quickly.
Previously, the pressure of supplied gas was generally managed using an analog self-recording pressure gauge. Chart paper had to be refilled regularly on-site.The remote monitoring system eliminates the need to refill the chart paper. Patrol inspections, which were conducted once a week, can be reduced to once a month.
We sell the “governor remote monitoring and control system,” which consists of a monitoring control board (trademark: NEOGLOG), which was developed based on the know-how acquired over about 10 years of operation of a governor remote monitoring system for about 3,000 medium-pressure governors, and a center system.We can design a system that takes into account the disaster prevention policy, organization, and structure of the gas supplier, and the characteristics of the supply area.