Video imagery or infra-red images are combined with image processing algorithms to provide continuous monitoring of the flare and issue alerts if the flare deviates from operator specified performance.
Conventional video imaging technology is used to deliver live video streams of flares to provide real-time insights and alerts.
A range of metrics can be tracked including the size of the flare, smoke to flare ratio, and flare angle, enabling operators to make real-time decisions based upon pre-determined parameters.
The emergence of these systems have been enabled by two technologies:
More sophisticated metrics related to gas volume, chemical composition and business impact are also entering the market.
Camera systems can be located in a range of positions, including at grade or centrally to support a number of flares simultaneously.
AI and edge computing systems can also combined data from other sources – including thermal imaging cameras.
Example of on-screen feedback of flare performance (image courtesy of Viper Imaging)
Advantages
Video-imaging hardware is based upon robust, readily available and technology that is simple to operate and maintain
Some camera systems can be positioned in high-hazard areas
System can be modified and tuned to suit specific flare parameters and operational conditions and learn what is considered normal for the specific deployment
Can monitor or report multiple parameters simultaneously
Instantaneous response time and variable alarm thresholds
Reduce staff hours observing flares
Limitations
Does not monitor methane directly – but infers poor flare performance from observable data such as soot which may not be directly linked to greenhouse gas emissions
Requires access to power and data networks
May be impacted by, or struggle to differentiate the impact of adverse environmental conditions (strong winds, ice, snow)
Case study
Awaiting copyright approval
There are a range of flare monitoring systems to detect and alarm if the flare is unlit. Each technology utilises a feature of the flare such as heat or light. Alarms provide a near real-time alert that conditions in a flare have fallen outside of a predetermined threshold - such as when crosswinds or intermittent flow have led to a flare extinguishing. An unlit flare is a more significant source of methane and a more potent source of greenhouse gases as none of the gas is being converted to carbon dioxide.
