Services

Fire and explosion risk analysis (FERA) is the vital part of the safety studies for both onshore and offshore installations. It gives an overall risk picture of the facilities subjected to accidental events caused by unintended gas leak and subsequent ignition. As a part of the studies both fire and explosion frequencies for each designated fire area is generated with an appropriate ignition modeling and leak frequencies asper the client requirements. The outcome of this analysis will provide a detailed recommendations for a subsequent 3D consequence modeling analysis for a specific high risk areas.   

Consequence modeling with simple analytical/empirical models and an advanced 3D CFD modeling will be performed to assess the severity of the accidental events. The analysed results will be used  for Risk matrix generation in combination with QRA (Quantitative Risk Analysis) and safety studies. A more detailed flow insight and safety recommendations in the design layout will be given to the client during FEED (Frontend engineering design), Detailed and As-built stages of the design.

Gas dispersion analysis for flammable and toxic releases  gives a detailed flow insight of gas spreading and its exposure to safety critical areas. Both 2D analytical and an advanced 3D CFD modeling can be performed depending upon the design maturity of the facility.  The effects of  wind speeds , wind stability  class (A,B,C,D and F) , 3D Terrain effects and  obstacles will be modelled to get a realistic safety distances of gas spreading which may optimise the gas detector layout and also emergency preparedness.

Unintended gas and liquid flammable leaks  with an  immediate ignition may results in jet and pool fires. Both empirical modeling and a detailed 3D CFD modeling can be performed depending upon the design maturity.   Heat loads on the safety critical elements (SCE’s) and to the personnel’s in working area environment  will be assessed. Impairment frequencies for the escape routes, Muster areas, Life boats , Critical load bearing structural members, Temporary Refuge(TR)  and CCR ( Central control room) will be evaluated. Design recommendations critical to fire accidental events will be given to the client.

Unintended gas and liquid flammable leaks  with delayed ignition may results in Vapour cloud explosion. Both empirical modeling and a detailed 3D CFD modeling can be performed depending upon the design maturity of the facility.  Explosion overpressures and Drag loads on  safety critical elements (SCE’s) and to the personnel’s in working area environment  will be assessed. Impairment frequencies for the escape routes, Muster areas, Life boats , Critical load bearing structural members, Temporary Refuge(TR)  and CCR ( Central control room) will be evaluated. Design recommendations critical to explosion  accidental events will be given to the client

Both Natural and mechanical ventilation of air flow modeling in semi and enclosed process facilities will be simulated using CFD methods. Typical outcome of the results are Air exchanges per hour (ACH), Air Stagnant zones and Recirculation zones   where the gases can be trapped inside the facilities. Design recommendations for  optimum  ventilations to dilute the gas clouds and  mixing it effectively by drawing more air  into the congested process areas will be given.

Windchill analysis with CFD flow modeling gives a thermal comfort for  the working  personnel’s in offshore platforms with cold environment. The main outcome of the studies gives a detailed recommendation’s  for wind wall designs around the platform deck periphery for optimal thermal comfort.

Steel structures subjected to Fire and explosion loads will be analysed by a nonlinear structural response analysis to check the residual strength of the steel structures and the integrity of the barriers. The purpose of this study is to evaluate the Design accidental loads (DAL) as derived from fire and explosion analysis.