EXPLOSION SAFETY ENGINEERING

Explosion effects are estimated within an advanced methodological approach, based on the use of FLACS® numerical code (international standard for the analysis of explosion scenarios in confined/congested geometries) by Gexcon AS. Depending on project goals and constraints, a Worst case or a Probabilistic approach may be adopted.

 

  • Worst case approach: effects are estimated for the theoretical maximum gas cloud (Theoretical Worst case approach) or the maximum credible gas cloud (Realistic Worst Case approach);
  • Probabilistic approach: a complete picture of the risk level is established through a comprehensive methodological framework, consisting in the following tasks:
    - Ventilation simulations: providing ventilation rates inside the module under different weather conditions, correlated with weather statistics;
    - Dispersion simulations: providing a representative selection of leak scenarios, and the corresponding effects in terms of flammable gas cloud space-and-time evolution, correlated with leak frequency data;
    - Explosion simulations: providing a representative selection of explosion scenarios, and the corresponding effects in terms of pressure and flame front space-and-time evolution;
    - Risk Calculation: producing probability of exceedance curves and iso-risk contour plots.

STRUCTURAL ASSESSMENT AND DESIGN AGAINST BLAST LOADING

Structural preliminary design and assessment against blast loading is provided, based on advanced nonlinear transient Finite Element Analyses, using Abaqus-Explicit® (Dassault Systemes) or LS-Dyna® (Ansys Inc.) commercial codes. The service applies to:

 

  • Reinforced concrete structures;
  • Steel structures;
  • Equipment.

EXPLOSION OF OIL - INSULATED ELECTRICAL COMPONENTS

  • Arc energy estimation and primary explosion scenario definition;
  • Consequence evaluation of Secondary explosion scenario;
  • Explosion damages estimation on personnel, hosting structures and adjacent equipment;
  • Worst case and Probabilistic Transformer Explosion Risk Analysis;
  • Venting layout optimisation.

EXPLOSION OF SF6 - INSULATED ELECTRICAL COMPONENTS

  • Arc energy estimation;
  • Primary explosion scenario definition and consequence evaluation;
  • Accidental SF6 release dispersion scenario definition and consequence evaluation;
  • Explosion effects estimation on personnel and adjacent equipment.
CUSTOM MADE GAS AND DUST EXPLOSION ANLYSES
  • Optimization of venting solutions for blast mitigation;
  • Determination of the effects of accidental explosion scenarios in industrial and civil environments (including accident investigations).
CUSTOM MADE FLAMMABLE/TOXIC GAS DISPERSION ANALYSES
  • Gas detection system optimization based on advanced CFD analyses;
  • Toxic gas dispersion studies;
  • Exhausts analysis.