evacuation escape and rescue

8/3/2019 Evacuation Escape and Rescue

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PRESENTATIONPRESENTATION

BYBYOgbu Chinedu E.Ogbu Chinedu E.

Development of a generic Spreadsheet model for calculating

Fatality Rate from Evacuation, Escape and Rescue process in

offshore Multi-Platform Complex.

Engineering Challenges and Opportunities that could be

faced by Subsea 7

8th Feb. 2012


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WHY MODEL FATALITY RATEWHY MODEL FATALITY RATE

FROM EERFROM EER Regulatory Requirement

For Decision Making

-It can identify weaknesses in the evacuation system-It can be used to determine the impact of failure of each ofthe available means of evacuation

-Will result in the development of appropriateprocedures and strategies for any type of emergency

QRASAFETY

CASE

PFEER

Fire and Explosion

Analysis

Evacuation, Escape

and Rescue Analysis


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Ecofisk Complex

Mumbai High: before the accident Mumbai High: after the accident


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PROJECT METHODOLOGYPROJECT METHODOLOGY

Literature ReviewDiscussions with Industryand Academic Supervisors

Familiarisation withthe EER process

UnderstandingExisting EER

Models

Development of a Model forCalculating Fatality Rate during

EER Process

Test Running the Model on aHypothetical Platform Complex

Recommendations on How toImprove the Model


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CONCEPTS IMPLEMENTATIONCONCEPTS IMPLEMENTATION

Personnel are required to move to, and

evacuate from the temporary refuge (TR).

Accident on one of the platforms, leavessome or all the platform cut-off from theTR.

As a result, personnel could evacuate from

a maximum of five possible locations(Evacuation Points)


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....concept implementation....concept implementation

Platform used as the TRLocation of accident

Platforms with accessto the TR

Group A

Group B

Group CPlatform

Bridge Link


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...concept implementation...concept implementation

Evacuation Points

The five possible evacuation points are:

Platform used as the TR, PLTR Platform where the accident has

occurred, PLaccident

Group A Platforms, PLgrp A Group B Platforms, PLgrp B Group C Platforms, PLgrp C


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CALCULATING FATALITY RATECALCULATING FATALITY RATE


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...calculating fatality rate...calculating fatality rate

Total Fatalities = ( Evacuation Phase Fatalities )

+ ( Rescue Phase Fatality )

Fatality Rate= Total Fatalities * Evacuation Freq.


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Spreadsheet SamplesSpreadsheet Samples

INPUT TABLE FOR PERSONNEL AND EQUIPMENT DISTRIBUTION

Platforms AP P1 P2 P3 P4 P5 P6 P7 P8 P9 ...........Pn

Number of Personnel 120 35 50 70 60 80 98 60 0 0 0

Helideck 1 0 0 0 0 0 0 0 0 0 0

Lifeboat: Number Available 6 2 2 2 1 4 2 3 0 0 0

Capacity 40 40 30 40 40 40 30 40 0 0 0

Liferaft: Number Available 3 2 2 2 2 2 2 2 0 0 0

Capacity 12 13 14 15 16 18 19 23 0 0 0

Table 1:Personnel and Equipment Distribution

AP P1 P2 P3 P4 P5 P6 P7 P8 P9 ...........Pn

Platform Used as TR 1 0 0 0 0 0 0 0 0 0 0

Location of Accident 0 0 0 0 1 0 0 0 0 0 0

Platform(s) with Access to the TR 0 0 0 0 1 0 1 1 0 0 0

Platform(s) with no Access to the TR: Groups A 0 0 0 1 0 0 0 0 0 0 0

B 0 1 1 0 0 0 0 0 0 0 0

C 0 0 0 0 0 1 0 0 0 0 0

Table 2: For Platform selection


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.....continuation.....continuationCASE A

EVACUATION FROM THE ACCIDENT LOCATION PLATFORM (PLaccident)

RESULT

HELICOPTER EVACUATION

FATALITY IN SEA

Total Number of personnel evacuated by helicopter 0

Pre-Embarkation

LIFEBOAT EVACUATION

Number of Personnel to be evacuated by Lifeboat from ALP 12

Number of Lifeboats Launched Successfully 1

Number of Personnel on each Lifeboats 12

Number of Personnel Remaining After Lifeboat Evacuation 0

LIFERAFT EVACUATION

Number of Personnel falling into the Sea During Embarkation 0

Number of fatality as a result of falling into sea during Embarkation 0

Number of Personnel alive in sea as a result of falling into sea during Embarkation 0

Number of Liferaft Launched Successfully 0

Number of Personnel on each Liferaft 0.0

ESCAPE TO SEA

Number of Personnel Remaining after Liferaft Evacuation that will Escape to Sea 0

Number of Fatalities from Initial Drowning 0Number of personnel alive in sea 0

Sub-Total (Pre-Embarkation) 0 0

Post-Embarkation

LIFEBOAT EVACUATION

LAUNCH RESULTS FATALITY IN SEA

Number of personnel Successfully Evacuated by Lifeboat 12

DESCENT

Probability of failure during descent 0

Number of Fatality as a Result of Lifeboats failure during descent 0

Number of Personnel alive in Sea as a Result of Lifeboat Failure during descent 0

Number of Personnel intact in Lifeboat after descent 12

IN SEA

Probability of Hook failing to release 0

Probability of Lifeboat capsizing 0

Probability of lifeboat colliding with Structure 0.3

Probability of lifeboat failing after successful descent 0.3

Number of Personnel in sea due to lifeboat failure after successful descent 3.6

LIFERAFT EVACUATION

LAUNCH

Number of personnel Successfully Evacuated by Lifeboat 0

DESCENT

Probability of Liferaft failure during descent 0

Number of Fatality as a Result of Liferaft failure during descent 0

Number of Personnel alive in Sea as a Result of Liferaft Failure during descent 0

Number of Personnel intact in Lifeboat after descent 0

IN SEA

Probability of Hook failing to release 0

Probability of Liferaft Deflating 0.3

Probability of Liferaft colliding with Structure 0.1

Probability of Liferaft failing after successful descent 0.4

Number of Personnel in sea due to liferaft failure after successful descent 0

FATALITY IN SEA

Sub-Total (Post-Embarkation) 0 3.6

TOTAL 0.00 3.60


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.....continuation.....continuation

RESULT FOR CASE A

Platform Used as the TR AP

Platforms with access to the TR P4 P6 P7

Number of Personnel to be Evacuated from this Pl atform 356

Number of Fatality f rom the Evacuation phase 54.38

Number of fatality fron the Rescue phase 85.128

Total number of fatality 139.51

Location of Accident P4

Number of personnel to be e vacuated from this Platform 12.00

Number of fatalities f rom the Evacuation phase 0.00

Number of fatalities from the Rescue Phase 1.44

Total number of fatality 1.44Group A Platform(s) P3

Number of personnel to be e vacuated from this group 80.8



Total number of fatality 9.72

Group B Platform(s) P1 P2

Number of personnel to be e vacuated from this group 92.2



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Group C Platform(s) Total number of fatality P5

Number of personnel to be e vacuated from this group 80


Number of fatalities from the Rescue Phase 9.6Total number of fatality 9.60

Overral Result for Case A

NUMBER OF FATALITY FROM EVACUATION PHASE 54.38

NUMBER OF FATALITY FROM RESCUE PHASE 116.9568

TOTAL FATALITY FROM BOTH OPERATIONS 171.34

FATALITY RATE (Per installation year) 5.14E-01


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ENGINEERING SKILLSENGINEERING SKILLS

DEMONSTRATEDDEMONSTRATEDAbility to solve engineering problems throughcreative and innovative thinking

The ability to apply mathematical, scientific and

technological tools

Enthusiastic, in the application of knowledge,understanding and skills in solving problems

Self-motivation

Good time management skills


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Engineering Challenges andEngineering Challenges andOpportunitiesOpportunities

y Increase in technical complexity ofprojects will mean that

y Onerous regulatory requirements.y Extending the life of subsea infrastructure

and decommissioning uneconomic subsea

asset.


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evacuation escape and rescue

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