One method for detecting SF6 gas leakage in a substation is to use a reliable infrared camera with SF6 gas detection capabilities. This enables the identification of potential leaks during routine maintenance rounds. These new - generation infrared cameras integrate a high - performance thermal imager with a reliable pistol - grip form factor and SF6 gas detection functionality.
These devices offer several advantages over other methods, as detailed below:
- They allow maintenance to be scheduled at a convenient time, eliminating any unplanned downtime.
- They reduce the potential for equipment damage and the costs associated with these leaks.
- Technicians can check for leaks from a safe distance while the equipment is in operation.
- They can locate leaks in overhead equipment or in areas off the ground.
When using this device, the following points should be noted:
- Avoid using it on rainy or windy days. Under such conditions, the gas dissipates too quickly, except in the case of a massive leak.
- For the gas to be visible, it needs to have a different temperature from the background, so a thermal contrast is required.
- Use a tripod to stabilize the camera during the inspection.
- Position the camera 3 - 4 meters away from the target.
Common leak locations include flanges, the tops and bases of bushings, and tubes.
