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Executing projects in Control & Automation Systems for over 30 years covering the full life cycle from Concept to Design, Engineering, Contruction, Commissioning, Start-up and Process Optimisation has resulted in diverse experience and us delivering real value to our customers. We look forward to working with you to delivering your requirements.
Fixed fire and gas detection systems in processing facilities typically ensure that risk mitigation systems such as isolation, blowdown and active fire protection are activated in the event of a hazardous event. We provide well designed systems with an appropriate level of detector redundancy to guard against false trips and detector faults.
Our Fire & Gas mapping studies provide an objective analysis of detector layouts to support the design process and optimise the number of detectors needed to meet coverage targets.
So this is what we do for Modelling
Modelling a leak is a difficult task, since gas dispersion depends on a large number of variables such as process conditions, hole size, release position and direction, ventilation conditions, impingement, etc. Using probabilistic dispersion studies using Computational Fluid Dynamics (CFD) we can assess the likelihood of cloud formation across a process area to identify favourable detector locations. However, such analysis is time consuming and expensive, inevitably meaning that only a sample of the variables involved can be considered.
This is what we do for Mapping Studies
A mapping study avoids complexity by considering a reference cloud or fire of fixed dimension. For example, a maximum tolerable flammable cloud of 5m diameter at its Lower Flammable Limit (LFL) is often used in offshore environments, based on research indicating the onset of damaging explosion overpressures from clouds of this size.
We generate a map and coverage statistics by considering the number of gas detectors that would alarm as the position of this cloud is moved across a detection zone and the detector layout is optimised to ensure pre-determined spatial coverage goals are met.
A similar approach is applied to fire detection, where the ability to detect a reference fire size is assessed with no consideration of likelihood and the reference fire or cloud treated equally likely at each position in the detection zone.
- Maximise the effectiveness of F&G detection systems.
- Implementat the geographical and the newly established risk-based approach to meet coverage targets.
- Compatibility with all typical input formats and simulation options for producing automatic outputs aligned with project deliverables to fit seamlessly with client requirements.
- Ensuring heat, flame, flammable gas and toxic gas detector arrangements are fully optimised to meet safety goals, avoid excessive redundancy and minimise spurious trips.
- Ensuring protection of personnel, assets and the environment in line with project philosophies, operator engineering practices and international codes and standards.
- Design Review Facilitation
- Quantitive Risk Assesment
- Mapping Report