Flare System Monitoring

Deployment of acoustic sensors at pressure relief valves to monitor leaks and PRV integrity

Data Infrastructure: Smart Sensors & (Sub)-Metering - Smart Maintenance

Technology description

Deployment of Rosemount 708 Acoustic transmitter at the Pressure Relief Valve output will detect leaks and the opening or closing of the Pressure Relief Valve. The monitoring strategy can be combined with rupture disc monitoring by deployment of the Rosemount 702 Discrete transmitter. Studies have found that up to 15% of PRV are leaking, sometimes fail to work or are even bypassed. Leaking PRV are the main culprit when it comes to greenhouse gasses as they will be burned by the flare.

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Key features

Comprehensive PRV monitoring through non-intrusive wireless acoustic transmitters.
Advanced diagnostic to identify when PRV’s do not reseat.
Estimate duration/quantity released.
Enables immediate identification and response to release, eliminating the need to slow down production and ensuring minimal emissions.
Document flare releases for regulatory purposes.

Application fields

Majority of process companies where risk can occur of overpressure events.
Pressure Relief Valves, Pilot Operated Relief Valves & Safety Relief Valves.

Business case

Major Refinery

CO₂ impact / Energy cost reduction

CO2 reduction through better monitoring of leaks of greenhouse gasses as they will be burned by the flare.
Energy required to produce products wasted to the flare not lost anymore.

Non-energy benefits

Increased throughput and revenue: Leakages caused by PRD malfunctions can waste large amounts of valuable product, along with the energy required to produce these products. Even a small leak (0.1% from PRV flow area) can cause tens of thousands of Euro’s per year of material losses.
Operating under emissions limit.