Quantitative Risk Assessment For Indian Oil Corporation Limited Jabalpur Depot

Indian Oil Corporation Limited (IOCL) is a Government of India Enterprise with a Maharatna Status, and a Fortune 500 and Forbes 2000 company. Incorporated as Indian Oil Corporation Ltd. on 1st September, 1964.

M/s. IOCL is having an establishment for Receipt, Storage and Distribution of petroleum products at Jabalpur in Jabalpur district of Madhya Pradesh for distribution of petroleum products MS, SKO & HSD etc. To revenue districts of Jabalpur, Narsinghpur, Seoni, Mandla, Chhindwara, Balaghat, Satna, Rewa, Singrauli, Shahdol, Dindori, Anuppur, Sidhi, Panna, Katni, Umaria, Damoh & Chhatarpur by Tank Trucks. It also supplies to other consumers located nearby. It also supplies FO to various consumer. It occupies an important place in the Indian Oil distribution network.

The scope of work is limited to the different components associated with the proposed facility only. Any other facilities that are not part of the proposed Complex operations are not included as part of this study. The following facilities are covered under the QRA study for the Project.

  • Receipt of products through Rail Wagon Unloading facility.
  • Storage tanks of adequate capacities for storage of products.
  • Facilities for loading of products into Tank Lorries, through loading arms.
  • Receipt of Ethanol through tank trucks
  • Receipt of additives through barrels/tank trucks

The main objective of this 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 demonstrate that individual risks are within the broadly acceptable regions. The Objectives of QRA are as follows:

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

At present IOCL Jabalpur Depot receives MS, HSD & SKO by Railway Tank wagon from IOCL Mathura Refinery or IOCL Ratlam Terminal or IOTL Raipur, FO is received by railway TW from Mathura Refinery and Ethanol/ N-Methyl Aniline is received by Tank Trucks. Tanks and the same will be delivered by Road to Dealers and bulk Customers / Consumers.

The Entire Facility under study was divided into 44 Isolated Sections by mark-up. Further Input Sheet which contains details such as Process parameters, Parts Count, Isolation time, Total Inventory, Failure Frequency while keeping the Assumption Register as basis. All the relevant Inventory data are filled into PHAST 8.22 and Final Frequencies for each isolated sections and all the leak scenarios were incorporated into SAFETI 8.22. Consequence results as well as Risk results were extracted

On further analysis of the extracted results, risk reducing measures are recommended to ensure that all risks are in ALARP or in Acceptable region. The recommendations and results of the Quantitative Risk Assessment has been provided to the IOCL Team for their review and necessary further action for risk reduction.