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VAIL-PSRA (Petrol Station Risk Assessment)

VAIL-PSRA (Petrol Station Risk Assessment)

PSRA has been developed according to the guidelines in the standard HS(G) 146: Dispensing Petrol - Assessing and controlling the risk of fire and explosion at sites where petrol is stored and disposed as a fuel

It acts as a useful checklist to be sure that precautionary measures are in place and are practically observed during operations. It is a recommended practice to carry out a reassessment of the Petrol station regularly.

PSRA incorporates the following five steps recommended in the standard HS (G) 146, providing a systematic approach to looking for hazards and managing risk.

  • Analyze the site, its design, operation, and surroundings to identify where a fire and explosion hazard may exist.
  • For each area of the site and operation, consider: What could go wrong and Who could be affected?
  • For each finding from the previous step, assess if the current precautions are enough or if more needs to be done.
  • Record each finding and any action to be taken
  • Decide when there is need to review the Risk assessment

Petrol Fuel Stations (PFS) are hazardous workplaces. They store and sell flammable material (petrol, diesel, and CNG). Arrival and departure of various kinds of vehicles to take fuel is normal round the clock.

Due to the availability of flammable materials at PFS poses a constant hazard to the staff, public, assets, and environment. It needs special care in design, construction, installations and maintenance of its components so that they remain safe and secure throughout the life-span of the station and not to cause an explosion or other untoward incidents.

Being risk-based, the method requires consideration of both the probability of failure as well as the consequences associated with failure. The methodology can be applied to process equipment, structures, and pipelines. The main deliverable of an RBI study is an “Inspection Program”, describing:

  • Prioritization of equipment items to inspect.
  • When to inspect these items (inspection interval).
  • Which method to use for the inspection.
  • Specification data capturing along with hierarchy management of the facility.
  • Semi-quantitative RBI methodology for risk evaluation and inspection planning against identified hazards according to HS(G) 146.
  • Interactive checklist for each activity handling flammable fuel such as :
    • Offloading and Venting
    • Basic safety
    • Storage
    • Dispensing
    • Offsite Facilities
    • Pipework System
  • Configurable Risk Matrix to suit the operators needs. The screenshot below shows an example risk matrix in PSRA along with the classification of the number of stations falling in each risk category.
  • Summary of Overall weightage and overall rating for equipment.
  • Detailed recommendations for each equipment.
  • Inspection planning
  • Inspection history recording
  • Failure and replacement history recording
  • Short term/long term corrosion rate calculations
  • Remnant life calculations based the on minimum measured thickness
  • RBI related documents management and capturing of drawings
  • Reference documents attachment.
  • Trends and comprehensive reporting
  • Time, Cost & Resources (CTR) Management
  • Data importing from excel workspace templates

The outcomes from RBI and Inspection Management System;

  • Risk ranking, risk matrix
  • Risk driving degradation methods.
  • Probability of failure and consequences for each individual equipment item.
  • Calculates consequence to personnel, environment, production loss and material damage for ignited and un-ignited leaks.
  • Evaluation of the impact of changes in process conditions and materials on installation risk and inspection program.
  • Effect of inspection effectiveness and the number of inspections on the individual equipment item risk for a given period of time.
  • Inspection guidelines and detailed equipment inspection plans can be derived.
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