Development of Tools for Risk Assessment and Risk Communication for Hydrogen Applications

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Risk Assessment and Communication

• Development of Tools for Risk Assessment and Risk
  Communication for Hydrogen Applications

By Angunn Engebø and Espen Funnemark, DNV ICHS,
Pisa 09. September 2005
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Introduction

• Risk management and accidents
• Definitions
• The Hydrogen Incident and Accident Database HIAD
• The use of data for Risk assessment, Improvement
  of safety and Demonstration of safety

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Arabdrill 19
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Piper Alpha the day after
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KNOWLEDGE OF PAST ACCIDENTS
It might seem to an outsider that industrial
accidents occur because we do not know how
prevent them. In fact they occur because we
do not use the knowledge that is available
Daily Telegraph, 17 May 1990
Trevor Kletz
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Managing RISK

• Controlling risk
• Being wise BEFORE the unwanted event
• Learning by ones mistakes and
• Learning by OTHERS mistakes

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Managing RISK

• Controlling risk
• Being wise BEFORE the unwanted event
• Corporate learning
• Cross Sectorial learning

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Incidents AND Accidents
SYNERGI Database
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Disabling injury/Fatality

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Less serious injuries

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Material damage
Incident/near-missaccident

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How to prevent accidents

• Understanding how accidents occur
• Initiation (Causes)
• Propagation (Consequences)
• Barriers (Safety functions)
• Implementing measures to prevent the initiation
  AND to limit the propagation

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How to demonstrate safety

• Understanding how accidents occur
• Implementing measures to prevent the initiation
  AND to limit the propagation
• Demonstrating how the implemented measures will
  prevent recurrence of previous accidents
• TOOLS Risk Assessment and Accident Data

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What is Risk ?

• the combination of the probability of occurrence
  of harm and the severity of that harm (ISO/IEC
  Guide 51)

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What is Risk ?
HAZARD
RISK
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What is Risk Assessmentand Risk Management ?
HAZID
What can go wrong?
How often?
How big?
So what?
What do I do?
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Risk Assessment Management
What can go wrong?
HAZID
How often?
How big?
FREQUENCY ASSESMENT
CONSEQUENCE ASSESMENT
So what?
RISK ASSESSMENT
What do I do?
RISK MANAGEMENT
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Objectives of HySafe WP5 HIAD

• A common methodology and format for hydrogen
  accident/incident data collection and storage
• A tool for providing input to risk management and
  assessments
• A source for understanding hydrogen accident
  phenomena, scenarios and hazard potential
• Encourage and facilitatate industry partners to
  share experience

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HIAD Hydrogen Incident Accident Database
HIAD Administration
Pre-event conditions
Nature of event
Post-event actions
Conse-quences of event
References
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HIAD Administration Index Information
sources Dates of entry and last revision HIAD
operator and data provider details
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Pre-event conditions Date and time of
event Weather conditions Geographical
location Type of H2 application Operation
phase or mode
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Nature of event Systems and components affected
or involved Chain of events Causal
relations Relevant safety systems
and emergency response Releases, fire and
explosion specifications/details
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Consequences of event Fatalities and
injuries Property, environment and economical
loss and damage description and costs involved
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Post-event actions Clean-up and
restoration Legal/legislation
initiatives Lessons learned Investments made
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HIAD References Hyperlinks/references to
files and documents, web-sites,
etc. Specification of attachments, e.g. maps,
drawings, photos, etc
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Hazard Identification
DATA BASE
Total Risk Picture
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Frequency Assessment

• Models probabilistic
• Tools Fault tree assessment
• Prerequisites
• Accident data/RAM data
• Exposure data
• Relevance/applicability
• Amount of data ? Improve Precision

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Consequence Assessment

• What are the likely consequences ?
• Are the modelled consequences comparable to a
  real accident ?
• Tools
• Event Tree Analysis
• Consequence models

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Is the risk acceptable ?

• Are our employees exposed to a higher risk ?
• Are the measures implemented to protect our
  neighbours effective ?
• Do the neighbours feel safe ?
• Risk acceptance criteria under development in
  HySafe WP12 utilizing HIAD and other available
  accident and reliability data

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What to do ?

• Managing risk
• Selecting effective preventive and mitigating
  measures
• Demonstration of safety
• CREATE TRUST IN PUBLIC
• SAFE INTRODUCTION OF H2

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Thanks to our HySafe partners

• WP 5 HIAD
• DNV
• JRC
• Air Liquide
• HSE/HSL
• INERIS
• Norsk Hydro
• TNO
• Volvo

• WP 12 RA methods
• DNV
• Norsk Hydro
• CEA
• FZK
• HSE/HSL
• INASMET
• INERIS
• JRC
• Risø

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Thank you for your attention