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Quantitative Risk Assessment (QRA) Report of Hydrogen Blending in Natural Gas CGD Network

GAIL (India) Limited has committed to reduce the carbon emissions and implement renewable projects to avoid the adverse effects. Blending of Hydrogen with Natural Gas reduces the carbon intensity of methane. Gail (India) Limited has awarded iFluids Engineering to carry out Quantitative Risk Assessment (QRA) study for the Hydrogen Blending in Natural Gas CGD Network at Indore CGS.

The assessment will be based on the hazards that may occur during the operations of the project according information available. The scope of work is to carry out Quantitative Risk Assessment for Hydrogen Blending in Natural Gas Pipeline at Indore CGS, and the study covers the different components and equipment associated with this facility only.

The primary objective of this quantitative risk study is to evaluate the potential risk levels for personnel due to accidental release of hazardous materials from loss of containment scenarios from the facilities and to evaluate that individual risks are within the broadly acceptable regions.

The Objectives of QRA are as follows:

  • Recognition of Hazards and Major Loss of Containment (LOC) events
  • Finding out the  physical effects of failure case scenarios which include Estimation of Jet Fire, Pool Fire heat radiation distances, Flammable gas dispersion distances, BLEVE and over pressure explosion distances
  • Failure Frequency evaluation
  • Calculation of Societal risk quantification and Potential Loss of Life estimation
  • Evaluating  the quantitative  risk assessment to confirm that risk can be reduced consistent with the ALARP principle according to the UK HSE risk acceptance criteria
  • Providing risk reducing measures to ensure that all risks are in ALARP or in Acceptable region or in Acceptable region
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