Fire Demand Calculation & Hazardous area Classification (HAC)

Project Background:

The “Agri Hub” project is part of ENI’s initiatives on circular economy and sustainable agriculture, which aims to develop biofuels and bio-feedstock industry in the Republic of Congo, and support the Country to reach its decarbonization target, supporting the development of its agricultural sector. ENI collaborates with the Republic of Congo to develop activities for agricultural development, to reach the production of bio feedstock by 2023, with the purpose of applying vegetable oils as a feedstock for bio-refineries. 

The agricultural development project concerns the development of sustainable oil crop cultivations. As part of this project, the construction of agricultural hubs (called Agri Hubs) is foreseen, consisting of plants for oil extraction from oilseeds to be used as feedstock in bio-refineries for bio-fuel production. 

  • Early production (industrial start-up): assessment and design of oil extraction plant with a capacity of oil extraction equal to 20000 Ton/year.  
  • Full development (industrial): assessment and design of oil extraction plants with a full capacity of 150000 Ton/year of oil production.

Every process line is divided into seven units:

  • Seed receiving;
  • Seed storage;
  • Seed cleaning;
  • Oil extraction;
  • Oil filtration;
  • Cake management;
  • Oil storage;

ENI awarded the EPC contract to M/s RINA Consulting, Mumbai, India.

Scope of work for iFluids Engineering:

Fire Demand Calculation & Hazardous area Classification (HAC)  has been performed by M/s iFluids Engineering for M/s RINA Consulting, Mumbai, India


  • Detailed report on Fire Demand Calculation
  • Detailed Hazardous area Classification report and Drawing (HAD)

Execution Methodology – HAC:

  • Review of Preliminary GA drawing or plot plan layout.
  • The principle intention of this study is to scrutinize the possibility of explosion release in the processing facility, in particular, the Bio fuel Industrial Start-up Agri Hub.
  • This report also explores the procedural needs to be adopted, to avoid ignition peril that may occur from time to time in the operation of facility, while handling flammable/ combustible liquid.
  • Identification of the type of hazards such as combustible gas, dust, fibers present in the facility is determined and specified into groups of hazardous substances involved.
  • Classification of facilities into zones and the extent of zones is determined as per recommendations from standards and represented in layout as HAD (Hazardous Area Drawing).

Execution Methodology – Fire demand Calculations:

  • Review of Layouts and pump datasheet
  • The fire water main pump was designed as per NFPA
  • Identify how much fire water is required for each area.
  • Identify amount of water required for the equipment based on its area.
  • Find the cumulative / total amount of water needed for the total plant.
  • Based on the flash point, find the worst case scenario.
  • Suggest the number of monitors and hydrants based on NFPA
  • Develop layout in spray sprinkler model