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Application of dispersants on oil spills in the North Sea

Application of dispersants on oil spills in the North Sea. Workshop: The Hague, October 2, 2007. Workshop program. 10.00 Word of welcome by ir. L. Bijlsma (director Waterdienst) 10.15 Opening and introduction 10.30 Lectures 14.00 Subgroup discussions 15.45 Plenary presentation

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Application of dispersants on oil spills in the North Sea

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  1. Application of dispersants on oil spills in the North Sea Workshop: The Hague, October 2, 2007

  2. Workshop program 10.00 Word of welcome by ir. L. Bijlsma (director Waterdienst) 10.15 Opening and introduction 10.30 Lectures 14.00 Subgroup discussions 15.45 Plenary presentation 16.30 Evaluation and closure

  3. Announcements

  4. Word of welcomeir. L. Bijlsma (director Waterdienst)

  5. Application of dispersants on oil spills in the North Sea Introduction

  6. Workshop objective • Learn… from other countries • Discuss… about application in NL • Recommend… on a Dutch decision tree …to arrive at a Decision Tree for the use of dispersants on the Dutch Continental Shelf

  7. Capaciteitsnota 2006-2010 • Objective • How prepared is RWS for combating oil spills • Which and where updating is required • Background • Goals defined in ‘Nota bestrijding milieugevaarlijke stoffen Noordzee 2000-2010’ • Capacity is determined by protection of vulnerable areas • National and international experience (e.g. Erika, Prestige) • New in the Capaciteitsnota: • Use of chemical dispersants

  8. Torrey Canyon 1967 • 14.000 tonnes oil reached shoreline • 10.000 tonnes industrial dispersants

  9. Considerations for selection of strategy • Analysis of the threat • Assessment of (meteorological) conditions • Evaluation of regional vulnerability

  10. Use of dispersants • Basic strategy is mechanical combatement • Deployement of UK Maritime and Coastguard Agency, according to Bonn Agreement • Coverage of DCS within 8 hours

  11. To Spray or not To Spray? • When is use of dispersants considered • possible? • acceptable? • feasible? • Decision tree

  12. Decision trees: To Spray or not To Spray? Source: CEDRE 2005

  13. Decision trees: To Spray or not To Spray? Source: TNO 2004

  14. Decision trees: To Spray or not To Spray? Source: TNO 2004

  15. Decision trees: To Spray or not To Spray? Source: Lewis, 2007

  16. Workshop objective • Learn… • Discuss… • Formulate recommendations… …to arrive at a Decision Tree for the use of dispersants on the DCS

  17. 1.Learn • What are dispersants (Lewis) • Which response options are in use (Huisman) • Strategic/operational aspects of aircraft application (Frances) • Vulnerability of the North Sea (v Dalfsen)

  18. 2.Discuss • Approval of dispersants • Bird vs fish debate • Dealing with operational restrictions • Monitoring of (short- and longterm) effects

  19. 3. Formulate recommendations formulate suggestions and recommendations to be used when developing a Decision Tree for use on the Dutch Continental Shelf

  20. Workshop program - Lectures 10.30 Different aspects of oil spill dispersantsAlun Lewis, Oil Spill Consultant 11.15 Current practice in response methods in the Bonn Agreement Sjon Huisman, Rijkswaterstaat 11.45 Strategic & operational aspects of the application by aircraftChris Frances, Maritime Coastguard Agency UK 12.30 – 13.30 Lunch 13.30 Ecological sensitivity in the Dutch part of the North SeaJan van Dalfsen, IMARES

  21. Workshop program – Subgroup sessions 14.00 Subgroup work • Each divides 5 points (stickers) over subgroup questions • Discussion start with highest rated question • Each provides 1 recommendation on Post-It note • Each is invited to answer other questions after the workshop! Sessions • Which criteria are important for the approval of specific dispersant products • How can different types of ecological impact of (un/)dispersed oil be compared • How can we deal with the operational restrictions in using dispersants • How should short and long term effects of dispersed oil be monitored 15.15 Break and demo’s 15.45 Presentation of subgroup results 16.30 Evaluation and closing words

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