Safety Speed The Vision

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Safety _at_ SpeedThe Vision

• Richard Birmingham
• Newcastle University
• S_at_S Final Meeting
• June 2004, Copenhagen

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Overview

• Background and Scope
• Project Aims
• The Concept of the Project Tool
• The Vision
• The Realisation
• Conclusion

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Background

• High speed passenger craft are a relatively new
  innovation
• There is insufficient operational history to base
  safety decisions on past experience
• Formalised safety methods have to be implemented
  in the design process

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Scope high speed monohull vessels, with design
speeds of up to 50 knots
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Project Aim

• To develop a formalised methodology for design
  for safety of HSC using state-of-the-art
  techniques and tools.
• To develop supporting tools and information,
  which will enable HSC designers to explore
  alternative solutions at the preliminary stage
  with regard to
• overall safety
• through-life cost

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The Concept of the Project Tool

• Intended to assist designers of high speed
  vessels at the preliminary stage
• Enable them to quickly model risk and cost with
  a minimum of input information
• Allow early evaluation of alternative design
  ideas, so several design solutions can be explored

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1. The Safety Model
EVENT TREE
FAULT TREE
Output Calculated Risks
Top Event
End Events
Input Basic Event Probabilities
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The Safety _at_ Speed Model
Containment of damage (fire and flooding)
Human factors (automation and manoeuvering)
Structural failure (foundering)
Ship motions and accelerations (comfort and loads)
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Procedures for calculating all basic events use
key safety parameters
Pr f(P1.1, P1.2, P6.6)
Pr f(P1.1, P1.2, P6.6)
Pr f(P1.1, P1.2, P6.6)
Pr f(P1.1, P1.2, P6.6)
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2. The Cost Model

• Two components
• Build (capital) Costs
• Operating Costs
• Both must be calculated with reference to key
  safety and cost parameters
• Procedure developed to combine build and
  operating costs to find through life costs

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Calculation Procedures Within the Project Tool
Comfort Index
Risk
Cost
MSI MII Vibration Indoor Climate Noise
Collision and Grounding Dynamic
stability Foundering Fire Flooding
Build Operating
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The Key Parameters

• From development of safety and cost models over
  300 key parameters identified.
• These have been categorised in different ways.
• Firstly by system
• User Defined
• Hullform and Construction
• General Arrangement
• Motion Characteristics
• Systems
• Procedural

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Key Parameter Categories

• Secondly by hierarchy
• Background parameters
• Cost data
• Reference data
• Project specification parameters (Customer
  requirements)
• Dynamic design parameters
• Concept
• Preliminary
• Detailed
• Derived parameters

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Mechanics of the Project ToolDesign specific
parameter values are the input
PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
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Mechanics of the Project Tool
PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
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These values are used in the Safety model
SAFETY MODEL
PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
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to calculate probabilities for each basic event
SAFETY MODEL
PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
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PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
SAFETY MODEL
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PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
SAFETY MODEL
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Also used in cost model
COST MODEL CFirst f(P1.1WP2, P3.4WP1,
P6.6WP4) CThrough Life f(P1.1WP2, P4.2WP3,
P6.6WP4) CTOTAL CFirst CThrough Life
PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
SAFETY MODEL
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to calculate through life and first costs
COST MODEL CFirst f(P1.1WP2, P3.4WP1,
P6.6WP4) CThrough Life f(P1.1WP2, P4.2WP3,
P6.6WP4) CTOTAL CFirst CThrough Life
PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
SAFETY MODEL
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PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
SAFETY MODEL
COST MODEL CFirst f(P1.1WP2, P3.4WP1,
P6.6WP4) CThrough Life f(P1.1WP2, P4.2WP3,
P6.6WP4) CTOTAL CFirst CThrough Life
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The Project Tool
INPUT DESIGN VALUES
PARAMETER LIST P1 User Defined P2 Hullform
and Construction P3 General Arrangement P4
Motion Characteristics P5 Systems P6
Procedural
SAFETY MODEL
COST MODEL CFirst f(P1.1WP2, P3.4WP1,
P6.6WP4) CThrough Life f(P1.1WP2, P4.2WP3,
P6.6WP4) CTOTAL CFirst CThrough Life
OUTPUT COST
OUTPUT RISK
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The Safety _at_ Speed Objective

• To implement the safety and cost models as an
  integrated design tool
• Simple to understand
• Easy to operate
• The ideal implementation visualised in the S_at_S
  icon the S_at_S vision

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The Vision
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Input values of main parameters on simple slider
controls
Output calculated cost and risk
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User Interface
COST Model
COST
SAFETY
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The Realisation Interface
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Realisation results page
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Conclusion

• The Safety_at_Speed vision
• An integrated tool
• Enabling evaluation of safety and cost with the
  minimum set of design information
• The Safety_at_Speed team has succesfully achieved
  this as will be demonstrated

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• Any Questions?