Feasibility Study on the Use of Dispersants in the Bristol Channel in the Event of an Oil Pollution Incident (2002)
The approval and use of oil spill dispersants is regulated in UK waters. The Food and Environment Protection Act 1985 requires that a licence be issued for the deposit of any substance or article in the sea or that an exemption be granted under the Deposits in the Sea (Exemptions) Order 1985. The licensing authority for England and Wales is DEFRA (Department of Environment, Food and Rural Affairs (formerly MAFF - Ministry of Agriculture, Fisheries and Food). Specific permission to use oil spill dispersants in shallow water (defined as areas of sea where the water depth is less than 20 metres, as marked on Admiralty charts, or within 1 nautical mile of such area) must be granted by DEFRA. The role of the EG will be to provide information about the sensitivities of resources in the area to oil pollution, so that DEFRA can make a reasoned decision on dispersant use. The BCSEG considered many different relevant factors including the oil spill risks, likely spilled oil behaviour, characteristics of the Bristol Channel and the shoreline and marine resources that could be affected by spilled oil. The consequences of dispersing or not dispersing spilled oil were also considered. As a result of these deliberations, the areas of the Bristol Channel and Severn Estuary have been designated as dispersant use or non-use zones.These zones are marked on maps for ease of reference. These zones are: - Zone A Where dispersants can be used at any time of the tide - Zone B Where dispersants can be used (but only with DEFRA's specific permission) on an outgoing tide from High Water until High Water + 5 hours - Zone C Where dispersants can be used (but only with DEFRA's specific permission) on an outgoing tide from High Water until High Water + 2 hours - Zone D Where dispersants are not to be used at any time In the event of oil pollution occurring in the Bristol Channel an Environment Group (EG) will be activated to consider the environmental consequences of the spill and the most suitable ways in which damage can be minimised. The use of oil spill dispersants is a response method that might be used. The Bristol Channel Standing Environment Group (BCSEG) commissioned this report to describe the factors in the Bristol Channel that need to be considered when deciding to use, or not to use, oil spill dispersants.
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Identification
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- NRW_DS113767
- Alternative Title
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- Astudiaeth ddichonoldeb ar ddefnyddio gwasgarwyr ym Mor Hafren pe bai damwain olew yn digwydd 2002
- Metadata Language
- English
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The Bristol Channel has the second largest tidal range in the world and has been the focus of many hydrodynamic studies. A recent study, Bristol Channel Marine Aggregates - Resources and Constraints (Posford Duvivier, 2000) contains comprehensive details of many aspects of the Bristol Channel, including: - Tides (range, flow patterns and residual currents) - Wind (directions and speeds) - Waves (height and direction) - Sediment distributions - Macrofauna distributions The Severn Estuary / Mor Hafren Shoreline Management Plan (Gifford Associated Consultants, 1998) also contains many detailed maps of many physical characteristics such as seabed sediments. No new studies have been carried out on these aspects for the preparation of the report. Data is unique and irreplaceable. Important operational and decision making data.
- Dataset Reference Date (Publication)
- 2002-12-31
Temporal Extent
- Begin date
- 2002-01-01
- End date
- 2002-12-31
- Topic category
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- Environment
- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
- Geographic Extent
- England (ENG)
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Vertical Extent
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- water column boundary layer
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The present report comprises the following:- [A] Published summary report (paper and PDF version) [B] Maps highlighting different management zones - MapInfo GIS layers
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Documents
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Quality
Data quality
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- Dataset
- Lineage
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The Bristol Channel has the second largest tidal range in the world and has been the focus of many hydrodynamic studies. A recent study, Bristol Channel Marine Aggregates - Resources and Constraints (Posford Duvivier, 2000) contains comprehensive details of many aspects of the Bristol Channel, including: - Tides (range, flow patterns and residual currents) - Wind (directions and speeds) - Waves (height and direction) - Sediment distributions - Macrofauna distributions The Severn Estuary / Mor Hafren Shoreline Management Plan (Gifford Associated Consultants, 1998) also contains many detailed maps of many physical characteristics such as seabed sediments. No new studies have been carried out on these aspects for the preparation of the report. Data is unique and irreplaceable. Important operational and decision making data.
Keywords
Keywords
Keywords
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NRW Thesaurus
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- marine biodiversity
- oil dispersants
- oil contamination
- Oil Pollution Research Unit (OPRU)
- Oil Pollution, Preparedness, Response and Co-Operation (OPRC)
- Bristol Channel
- oil pollution
- feasibility study
- Celtic Sea oil developments
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Citation
- Date (Publication)
- 2024-06-19
Keywords
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SeaDataNet Parameter Discovery Vocabulary
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- Pollution events
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Citation
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- 2024-06-19
Keywords
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IPSV Subjects List
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- Oil spillage
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Citation
- Date (Publication)
- 2020-11-18
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Feasibility study on the use of dispersants in the Bristol Channel in the event of an oil pollution incident
Constraints
Constraints
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- no limitations
Access Constraints Text
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This data is jointly owned by NRW and English Nature. There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
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© CNC/NRW and English Nature 2002. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and the copyright of NRW/ English Nature and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313133373637 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-12-13T14:36:26.215Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0