Offices in London, Dubai, Kazakhstan

& Nigeria

Our Clients

Agip KCO

(Kazakhstan)

Chrysaor

ENI

Granherne

Kazakh Oil Aktobe

Kazakh China Pipeline

KBR (UK & Overseas);

NCOC (Kazakhstan)

Oman Gas Company

Oman Refinery and

Petrochemicals Company

Penspen Group

Petroleum

Development Oman

Petrofac (UK &

Sharjah)

PSN

Shell

Subsea 7

Tecnicas Reunidas

Engineering (TRE)

Tullow Oil

Wood Group

Engineering Escape Evacuation Rescue Risks Escape, Evacuation & Rescue risks are calculated for each defined escape route which are module specific. The EER risks are dependent on user defined:

Event Trees

Radiation Levels to Escape Route Impairment

Module Specific Escape Route to Temporary Refuge

Offshore Quantitative Risks Assessment MES has delivered many Quantitative Risk Assessment (QRA) and Formal Safety Assessments (FSA) under a wide range of Regulatory Environments including UKHSE, Danish Energy Agency (DEA), NORSOK and Middle East. We deliver QRAs both for Onshore and Offshore facilities using both ‘in-house’ and industry standard software (e.g. DNV PHAST, Shell FRED/ Shepherd). Offshore QRAs utilise MES’ in-house tool which models facility risk adopting a modular/area approach that:

Determines a Location Specific individual Risk (LSIR) for each defined module/area

Calculates Immediate and Escape, Evacuation and Rescue (EER) Risks

Develops Individual Risks (IRPAs) accounting for Natural Events, Occupational & Transportation Hazards

Module/Area Risk Calculation Risk is the combination of frequency of a hazardous event and the associated consequences. The offshore QRA tool integrates physical effects data such as fire, explosion, gas dispersion accounting for mitigating measures such as fire walls and blast walls. Event frequency is determined using fault/event trees applying Ignition Probability Correlations. Consequence hazard ranges are input directly for:

Jet, Flash and Spray/Pool Fires Hazards

Explosion Hazards

Gas and Toxic Dispersion Hazards

www.mes-international.com

Offshore Quantitative Risk Assessment “Optimised Solutions through Client Alignment”

Individual Risk Per Annum and PLL calculations Individual Risk per Annum (IRPA) determines the assessment of risk to individual personnel employed. IRPA reflects the risk of fatality faced by a typical worker in the course of one year’s exposure. This encompasses all hazard exposure including Process, Occupational and Transportation Hazards. IRPA is ‘measured’ against industry defined criteria. The aggregate risk for a facility is also calculated. This is the Potential Loss of Life (PLL), reductions in which may be calculated with respect to different Risk Reduction Measures (RRMs) in order to demonstrate that a design is ALARP, i.e. risks are As Low As Reasonably Practicable.

Inputs

- Hazard Register

- Layouts

- Manning

- Process BOD

Consequence analysis

- Immediate hazard

- Escalation hazards

- Temporary refuge

- Escape route impairment

Sensitivity Frequency analysis

- Ignited/ toxic event probability

- Safety system availability

- Event tree accident frequency

Risk integration

- LSIR/IRPA/PLL

- SCE Impairment

Design Risk Basis

- ALARP Demonstra-