168
SULAIMAN et al.
Step 2 S/N Activity Input
Interacting sub- process
1 2
Prioritize list of hazardous scenarios
Prioritize list of hazardous scenarios
Input from hazard
identification
Preparation phase for step 2 activities
Making checklist for step 2 assessment
(Refer Indicative Checklist)
3 4
Identify hazard list scenario
Scenario data
Select hazard scenario
Analysis of scenario data of incident and accident
5 6
Scenario data, experience , step 1 details, RCA
Data experience, igniting events
Identifying initiative events
Developing events three
Root cause analysis(RCA) of accident s and incidents
- Critical issues Controls
Controling measuremnet output
Assessment of most significant accident scenario
Contribution, availability of tools and stakeholders
Qualification , experience , planning and scheduling
Size , dates Output
-
Step 2 tools, team,
stakeholder planning
Ability to
capture relevant inputs
Validity of input data
Grouping initiators Correct sequence of events
ETA, What – if / checklist, FMEA, HAZOP,RCA, Task analysis
7
Data experience, initiating events
8
Events tree and fault tree
9 10 Historical data Historical data
Developing fault trees
Developing of risk
contribution trees
Calculation of frequency of events
Calculation of frequency of events
11
Scenario , F&C Credibility check
12 RCT frequency &consequences
13
RCT frequency &consequences
`14 Risk assessment uncertainties
15 Step 2 output
Quantifying RCA, Risk matrix, FN CURVE
Evaluation of uncertainty
Acceptance of results
Risk matrix FN Calculation
-
Reference to acceptance standard step 3 and 4
documentation - FTA FMEA Common
cause failures, correctness of models, domino effects
Correctness of model,
assumption in system definition
ETA & FTA
Construct of FTA`s for initiative and critical events
Validation of result
Validation of result
Validation of result
Validation of result
Reliability estimates
Application of acceptance standards
Validation with reported data/ experience
Variation from reported data/ experience
Variation from reported data/ experience
Variation from reported data/ experience
Variation from reported data/ experience
Validity with reported data
Validation with published data
Coverage clarity Documentation standards (IMO, IACS, PIANC)
Mapped result from step 1
Input from reputed data based , relevant experience of members
Drawing up
preliminary event thre
Evaluation against HAZID
-
Convergence characteristics of inputs
Avoidance of double counting, number of events
Structure of event three time to construct
Evaluation of minimal cut sets
Structure of fault tree, time to construct
-
Selected scenarios
Assimilated data
Identify initiating events
Event tree
Fault trees with cuts – sets
Risk
contribution three (RCT)
-variation from reported data
Variation from reported data
Variation from reported data
Variation from reported data
Variation from reported data
Risk evaluation
Uncertainty analysis’s
Output from step 2
Contents presentation
Summary
Frequency estimate F
Consequence estimate ,
Credibility scenario
Journal of Marine Environmental Engineering
145-173 pp MB_37(Kader)
2.indd 168
2/19/2010 11:04:27 AM
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