Consequence and Risk Analysis - Corporate Experience

Corporate Experience in
Consequence and Risk Analysis

Quest provides the process industry with complete consequence and risk analysis services. These services are supported by:

A staff of engineers with extensive experience in process, operating and maintenance, and safety issues.
Comprehensive, documented consequence analysis models for predicting vapor cloud, fire, and explosion hazard footprints
A data base of process equipment failure rates.
Software systems to manage site-specific population distribution and weather data
Integrated software systems to perform risk computations and create f/N curves, risk contours, and individual risk values

Our risk analysis results have been presented and successfully defended in public hearings and accepted by regulatory agencies. This success reflects Quest's technical expertise and experience.

Brief descriptions of selected risk analysis and consequence analysis projects are listed below. Additional project information and references are available upon request.

Quantitative Risk Analysis (QRA)

Chemical/Petrochemical Facilities

Aromatics Chemical Complex; Thailand: Quantitative risk analysis of a new benzene/para-xylene chemical complex in an industrial estate. Results were used to satisfy national environmental and safety regulations.

Fertilizer Plant; Canada: Quantitative risk analysis of a large refrigerated ammonia storage tank. The results were submitted to the provincial regulatory agency.

Toluene Diisocyanate Storage; United States: Quantitative risk analysis of a toluene diisocyanate (TDI) storage.

Refineries

Refinery; United States: Quantitative risk analysis study of major processing units within a 96,000 bpd refinery.

Refinery; Thailand: Quantitative risk analysis of several processing units and storage tank areas within a large refinery. This was a "preliminary QRA" designed to determine if a more thorough analysis would be justified.

Alkylation Units

Sulfuric Acid Alkylation Unit; United States: Quantitative risk analysis of sulfuric acid alkylation unit.

Hydrogen Fluoride (HF) Alkylation Unit; Australia: Quantitative risk analysis of an existing HF alkylation unit. Additional QRA performed for unit with proposed mitigation systems in place.

Hydrogen Fluoride (HF) Alkylation Unit; United States: Comparative quantitative risk analysis of an HF alkylation unit to determine the reduction in risk that would result from the addition of mitigation systems. These systems included water spray systems for enhancing vapor dispersion, and an emergency de-inventorying system.

Hydrogen Fluoride (HF) Alkylation Unit; United States: Comparative quantitative risk analysis to determine the relative reduction in public risk that would result from certain proposed changes to the refinery's alkylation unit. The major changes included elimination of some HF pumps, a reduction in the number of flanged connections, and a reduction in total HF inventory.

Gas Processing Plants

Gas Processing Plant; United States: Quantitative risk analysis of gas processing plant and the associated LPG storage and loading areas.

Gas Processing Plant; United States: Quantitative risk analysis of a gas plant that processes sour natural gas. The gas plant includes units for sulfur removal, compression, refrigeration, LPG extraction and fractionation, LPG storage, and two LPG truck loading racks. The results were submitted to a government agency and the project was approved.

Gas Processing Plant; Malaysia: Semi-quantitative risk analysis to aid in determining the minimum size of green belt (buffer zone) needed between the existing gas plant and a proposed commercial/residential development.

Marketing Terminals and Storage

LPG Import Terminal and Cavern Storage; Peoples Republic of China: Quantitative risk analysis of LPG import facilities, including ship unloading, mined cavern storage, truck loading and transport.

LNG Liquefaction Plant and Export Terminal; Canada: Quantitative risk analysis of the marine transportation of LNG in the vicinity of a proposed LNG liquefaction and export terminal.

LPG Terminal; Malaysia: Quantitative risk analysis of a proposed LPG terminal and bottling plant.

Marine Transportation of LNG; Canada: Quantitative risk analysis of the marine transportation of LNG from a proposed liquefaction plant in the Canadian Arctic to proposed receiving terminals in Nova Scotia and Quebec.

Petroleum Products Marketing Terminal; Hong Kong: Quantitative risk analysis of a marketing terminal that receives and distributes LPG, jet fuel, gasoline, diesel fuel, and solvents. The results were submitted to, and accepted by, local government authorities.

Pipelines

Hydrogen Chloride and Anhydrous Ammonia Pipelines; United States: Quantitative risk analysis of pipelines transporting hydrogen chloride and anhydrous ammonia through industrial and residential areas.

Sour Gas Reinjection; Kazakhstan: Quantitative risk analysis of high pressure pipeline network for reinjection of hydrogen sulfide.

High Pressure Gas Reinjection; Venezuela: Quantitative risk analysis of high pressure compression, pipeline transportation, and reinjection of natural gas into producing formations. The results were submitted to and approved by the Ministry of the Environment.

National Pipeline Network; Mexico: Comparative risk analysis of over 100 pipelines and fourteen terminals. Products included natural gas, LPG, and refined products.

Gas Gathering System; United States: Quantitative risk analysis of a natural gas gathering system.

Sour Gas Pipeline; United States: Quantitative risk analysis of a system of large-diameter pipelines that transport sour natural gas.

Sour Gas Pipelines; United States: Quantitative risk analysis of a system of sour gas gathering pipelines. The results were submitted to a government agency and the project was approved.

Miscellaneous

Floating Production Platform; Venezuela: Quantitative risk analysis of floating production platform, producing well network, and pipeline system in a river delta.

Truck Transportation of Refrigerated Hydrogen; United States: Comparative quantitative risk analysis that quantified and compared the public risk associated with the truck transportation of refrigerated hydrogen, pressurized LPG, and gasoline along a specific route.

Consequence Analysis

Chemical/Petrochemical Facilities

Refinery; Malaysia: Semi-quantitative risk analysis of a proposed refinery. Accident probabilities and consequence analysis results were submitted to, and accepted by, government authorities.

Refinery; United States: Consequence analysis used to develop emergency response plans.

Olefins Plant; Brazil: Consequence analysis of an existing olefins and aromatics production facility, and proposed duplicate plant. Plant-to-plant spacing and tank farm layout were major concerns.

Refinery; United States: Detailed consequence analysis studies performed for eight processing units in support of Risk Management Prevention Plan (PMPP) legislation.

LNG Facilities

LNG Peakshaving Plants; United States: Consequence analysis of "design" spills and fires, as required by the Department of Transportation for new LNG facilities. The results were submitted to, and approved by, the state DOT.

Baseload LNG Import Terminal; Taiwan: Consequence analysis of "design" spills and fires.

LNG Peakshaving Plant; United States: Consequence analysis of hazards associated with expansion of LNG facilities.

LNG Liquefaction Plants and Export Terminals; Trinidad, Canada: Consequence analysis of "design" spills and fires.

LNG Peakshaving Plant; Canada: Consequence analysis of "design" spills and fires.

LNG Import Terminals for Electric Power Plants; Italy, South Korea, India, Puerto Rico: Consequence analysis of NFPA 59A and 49 CFR 193 "design" spills and fires. Quantitative risk analysis of the proposed LNG receiving terminal in Italy.

LNG Liquefaction Plant and Export Terminal; United States: Consequence analysis of "design" spills and fires, as required by the Department of Transportation for new LNG facilities. The results were submitted to, and approved by, the DOT.

Oil and Gas Exploration and Production Facilities

Vent/Flare Spacing for Offshore Platforms; Venezuela: Consequence analysis of vent and flare operations for production platforms in Lake Maricaibo.

Offshore Production Platform; United States: Detailed consequence analysis and qualitative risk analysis for flammable and toxic hazards associated with offshore gas production platforms.

Sour Gas Flares; United States: Consequence analysis of the sulfur dioxide created when flaring sour gas. A parametric study was conducted to determine the minimum acceptable flare stack height.

Gas Processing Plant; Malaysia: Consequence analysis of a large gas processing plant and the associated LPG storage area and marine terminal. Study results aided in the selection and design of hazard mitigation systems.

Offshore Production Platforms; United States: Consequence analysis of potential liquid and gas releases.

Oil and Gas Production Facilities; Venezuela: Consequence analysis of several producing wells and associated pipelines. The operating company was concerned about the presence of a small village in the area.

Pipelines

Hazardous Liquids Pipelines; United States: Consequence analysis of several pipelines located in a right-of-way that runs parallel to a major river. Two types of releases were investigated: those with sufficient momentum to expel the overburden (soil and water), and those in which the liquefied gas migrated to the surface through the overburden.

Marketing Terminals & Storage

Hydrocarbon Liquids Terminal; Australia: Consequence analysis of a proposed liquids fractionation facility, tank farm, and marine loading terminal.

For more information about our Consequence and Risk Analysis Services, please contact us at info@questconsult.com.