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Modeling and Analysis | DeltaQ Consultants

Our investigation practice is built on a philosophy of a rapid, adaptable response to assist clients in understanding the reasons a loss occurred as quickly as possible. We provide fire and explosion investigation services globally and can mobilize our team and appropriate resources immediately following an incident loss.

We utilize cutting edge technology while in the field to document, record, and analyze the scene. State-of-the-art analytical tools, computational resources, and laboratory facilities allow us to provide clients with a complete understanding of why an incident occurred, why the loss occurred, assign responsibility, and identify preventative measures to ensure a similar loss does not happen in the future.

Additionally, our team of incident investigation engineers is highly experienced in the use of proper methodologies when investigating a loss. Our engineers utilize the Scientific Method in all aspects of the investigation and are skilled in managing a project from the initial loss through litigation that may develop as a result of the loss.

In many cases, the root cause of an industrial, commercial, or residential fire or other large-scale incident is not the main cause of the loss. Our highly trained team of investigators routinely reconstruct the overall growth and spread of fires, explosions, and secondary fires from explosions to determine the overall factors that allowed for the growth.

The determination of additional factors as being responsible for the majority of the growth of a fire or explosion incident can have a huge impact on ensuring that future losses are mitigated and on potential litigation.

Our team of incident investigators are highly experienced in the use of proper modeling and scene reconstruction methodology; accounting for structural details and environmental conditions often overlooked by others.

Our professionals have investigated some of the largest industrial explosions around the world over the past 15 years. We apply the latest in forensic science and state of the art tools to aid in our investigation and reconstruction of the incident. Whether it is a mine explosion, an offshore platform, or a refinery explosion our staff has the experience to effectively manage the scene and to help operations resume.

We have investigated explosions involving solid, liquid, and gaseous fuels in all different environments. We will conduct experiments, perform computational fluid dynamics modeling, and analytical work as needed in order to gain a better understanding of the incident.

The key to any explosion investigation is answering several key questions:

  • What conditions allowed the explosion to occur?
  • What process or other conditions allowed the fuel to ignite?
  • What role did human factors play?
  • Was the explosion in a confined or congested area?
  • What were the dynamics of the explosion?
  • What was the profile of the pressure wave?
  • What were the impacts of the combustion zone?
  • How did the explosion vent?
  • What information can we gather about the explosion?
  • Extent of blast damage?
  • Extent of thermal damage?
  • PLC data

Most importantly we attempt to identify the underlying causes so that we can help to avoid similar events from occurring in the future. We take our experience in safety consulting and merge it with our accident investigation knowledge so that our clients have an understanding of not just what the code or the regulation requires, but more importantly what risks they truly face.

We provide explosion modeling services for a wide-range of industrial operations, commercial, manufacturing, and residential facilities and have extensive experience in the modeling and reconstruction of explosion events.

We have investigated explosions involving solid, liquid, and gaseous fuels in all different environments. We conduct experiments, perform computational fluid dynamics modeling, and analytical work all in order to gain a better understanding of the incident.

Our experts utilize state of the art tools such as FLACS (FLame ACceleration Simulator) to simulate flammable gas release, dispersion, and vapor cloud explosion (VCE) blast conditions.

FLACS is capable of modeling:

  • Steady-state and transient gas releases
  • Multiple release locations
  • HVAC or other ventilation conditions (i.e. wind or building systems)
  • Pool evaporation

Computational Fluid Dynamics

DeltaQ Consultants:

Computer fire modeling has become increasingly relied upon for various applications within the accident investigation industry. The state-of-the-art requires the use of computer fire modeling to fully understand all of the factors involved in a loss. Our staff are highly skilled in the use of many different computer models that are used in preventative, forensic, and accident reconstruction applications.

These include the two most common models used for fire, the Fire Dynamics Simulator (FDS) and the Consolidated Model of Fire and Smoke Transport (CFAST), both of which were developed at the National Institute of Standards and Technology (NIST). FDS is a computational fluid dynamics (CFD) code designed to model thermally-driven fluid flow, smoke transport, and the consequences and effects of a fire. CFAST is a two-zone fire model that is capable of predicting the uniform growth and filling of smoke, fire gases, and temperature throughout rectilinear compartments of a building during a fire.

Our engineers routinely utilize and have been involved in a unique blend of computer modeling development, model validation, and model use for practical applications in the field. In particular, we have been directly involved in the development of new modules within the FDS code. This unique developmental experience and our vast knowledge base of fire behavior allows for the proper interpretation of our modeling results as well as our ability to turn a critical eye toward modeling results performed by other parties.

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