Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.688249
Z. Tan, S. B. Ong
Spill response equipment is often kept for prolonged periods until required; such equipment would be operated continuously when deployed, often under harsh conditions detrimental to any equipment. Uncertainty in the reliability of response equipment bears significant risks to operational safety and incident management, especially in critical operations that have a widespread impact during an incident. A qualitative risk assessment was conducted on OSRL's equipment stockpile, considering their known history of breakdown (probability) and foreseeable impact (severity) during an incident. The resultant matrix categorises them into five different risk levels from low to very high. Response equipment is categorised in accordance with OSRL's prescribed service life, a set of guidance documents based on the organisation's operational experience and consultation with various manufacturers and other users, forming baseline data of the stockpile. Coupled with the results from the risk assessment conducted, it provides a wider understanding of response equipment from a risk-based perspective. The existing equipment risk profile is mapped out using the above method to provide a high-level overview to decision-makers. Upon discussion with stakeholders, the desired position on the risk profile can be achieved by replacing identified critical equipment or extending the service life of non-critical equipment. A risk-based approach allows a logical prioritisation of actions to be undertaken, in line with the organisation's strategy and enables decision-makers to make plans for a sustainable equipment reinvigoration program over a projected budget and period. With continual monitoring and assessment in place during planned maintenance, timely feedback can be provided to decision-makers on any changes to risk profile in the equipment stockpile; this not only helps in accurately updating the equipment condition, but also enables the early detection of equipment failure and prompts timely actions for resolution. Response equipment constitutes a valuable resource in response readiness; an evolved approach to the management of response equipment is discussed here and can be applied for Tier 1 and 2 response equipment to assure equipment reliability.
{"title":"A Risk-Based Approach to the Sustainable Management of Spill Response Equipment","authors":"Z. Tan, S. B. Ong","doi":"10.7901/2169-3358-2021.1.688249","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.688249","url":null,"abstract":"\u0000 Spill response equipment is often kept for prolonged periods until required; such equipment would be operated continuously when deployed, often under harsh conditions detrimental to any equipment. Uncertainty in the reliability of response equipment bears significant risks to operational safety and incident management, especially in critical operations that have a widespread impact during an incident.\u0000 A qualitative risk assessment was conducted on OSRL's equipment stockpile, considering their known history of breakdown (probability) and foreseeable impact (severity) during an incident. The resultant matrix categorises them into five different risk levels from low to very high.\u0000 Response equipment is categorised in accordance with OSRL's prescribed service life, a set of guidance documents based on the organisation's operational experience and consultation with various manufacturers and other users, forming baseline data of the stockpile. Coupled with the results from the risk assessment conducted, it provides a wider understanding of response equipment from a risk-based perspective. The existing equipment risk profile is mapped out using the above method to provide a high-level overview to decision-makers. Upon discussion with stakeholders, the desired position on the risk profile can be achieved by replacing identified critical equipment or extending the service life of non-critical equipment. A risk-based approach allows a logical prioritisation of actions to be undertaken, in line with the organisation's strategy and enables decision-makers to make plans for a sustainable equipment reinvigoration program over a projected budget and period.\u0000 With continual monitoring and assessment in place during planned maintenance, timely feedback can be provided to decision-makers on any changes to risk profile in the equipment stockpile; this not only helps in accurately updating the equipment condition, but also enables the early detection of equipment failure and prompts timely actions for resolution.\u0000 Response equipment constitutes a valuable resource in response readiness; an evolved approach to the management of response equipment is discussed here and can be applied for Tier 1 and 2 response equipment to assure equipment reliability.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85751610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.800004
J. Wakefield, Theodore D Tomasi, Angeline Morrow, Christopher Pfeifer, Heath Byrd
Natural Resource Damage Assessment (NRDA) under the Oil Pollution Act of 1990 (OPA) is a process used to determine the amount of compensation due to the public for natural resource injuries arising from oil spills. Two models, Resource Equivalency Analysis (REA) and Habitat Equivalency Analysis (HEA), are used in essentially all OPA NRDAs to compute compensatory restoration requirements. REA is applied when members of wildlife populations are injured: usually mortality or a loss of reproduction among a species of bird, turtle, marine mammal, or fish. HEA is used when habitats are injured: usually oiling of beaches, wetlands, or sediments. The models are often implemented in a cooperative setting with input from both the Responsible Party and the Trustees. In this setting the models provide a structure for organizing negotiations and identifying the types of agreements that need to be reached before restoration can be identified and “right sized.” The models also have a technical basis in economic theory that is fully justified, but only in particular, limited circumstances. This technical basis is the only means of assuring the Trustees, RPs, and stakeholders that the NRDA process has identified an appropriate level of compensation. When the circumstances of a spill do not approximate those in which HEA and REA are defensible, creative solutions are needed to adjust the models to the circumstances of the case if they are to provide a convincing basis for scaling restoration and reaching resolution. This paper identifies the circumstances under which REA and HEA are fully defensible as well as 35 years of evolving adjustments designed to make them “work” when applied to real-world cases they do not quite fit. We also look to the future and how climate change may alter restoration scaling.
{"title":"Habitat and Resource Equivalency Analysis: 30 Years of Lessons Learned and a Look to the Future","authors":"J. Wakefield, Theodore D Tomasi, Angeline Morrow, Christopher Pfeifer, Heath Byrd","doi":"10.7901/2169-3358-2021.1.800004","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.800004","url":null,"abstract":"\u0000 Natural Resource Damage Assessment (NRDA) under the Oil Pollution Act of 1990 (OPA) is a process used to determine the amount of compensation due to the public for natural resource injuries arising from oil spills. Two models, Resource Equivalency Analysis (REA) and Habitat Equivalency Analysis (HEA), are used in essentially all OPA NRDAs to compute compensatory restoration requirements. REA is applied when members of wildlife populations are injured: usually mortality or a loss of reproduction among a species of bird, turtle, marine mammal, or fish. HEA is used when habitats are injured: usually oiling of beaches, wetlands, or sediments.\u0000 The models are often implemented in a cooperative setting with input from both the Responsible Party and the Trustees. In this setting the models provide a structure for organizing negotiations and identifying the types of agreements that need to be reached before restoration can be identified and “right sized.”\u0000 The models also have a technical basis in economic theory that is fully justified, but only in particular, limited circumstances. This technical basis is the only means of assuring the Trustees, RPs, and stakeholders that the NRDA process has identified an appropriate level of compensation. When the circumstances of a spill do not approximate those in which HEA and REA are defensible, creative solutions are needed to adjust the models to the circumstances of the case if they are to provide a convincing basis for scaling restoration and reaching resolution.\u0000 This paper identifies the circumstances under which REA and HEA are fully defensible as well as 35 years of evolving adjustments designed to make them “work” when applied to real-world cases they do not quite fit. We also look to the future and how climate change may alter restoration scaling.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85767509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.ps7-02
S. Tuttle, B. T. Fisher, D. A. Kessler, Christopher J. Pfützner, A. Skiba, R. Jacob
While wellhead burning has been an oil field hazard for generations, the development of capping response technologies and practices by industry experts has enabled the oil exploration community to shift its views of wellhead burning from a hazard to an oil spill response tool. This review covers some of the fundamental scientific aspects and technical issues of wellhead burning that engineers and policy makers will need to consider as this mitigation strategy is examined as a standard oil spill response tactic. For context, we examine a potential wellhead blowout scenario over a range of oil flows and examine the regimes of two-phase pipe flows, their dependence on wellbore velocities and gas-liquid ratios, and how those regimes will influence the burn efficiency with some insight from our experimental observations from two-phase spray burn testing. Among the critical findings that we present is that the worst-case discharge flow rate cannot be assumed to be the worst-case wellhead burning scenario.
{"title":"An Overview of Wellhead Burning: Fundamental Science to Burn Performance Prediction","authors":"S. Tuttle, B. T. Fisher, D. A. Kessler, Christopher J. Pfützner, A. Skiba, R. Jacob","doi":"10.7901/2169-3358-2021.1.ps7-02","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.ps7-02","url":null,"abstract":"\u0000 While wellhead burning has been an oil field hazard for generations, the development of capping response technologies and practices by industry experts has enabled the oil exploration community to shift its views of wellhead burning from a hazard to an oil spill response tool. This review covers some of the fundamental scientific aspects and technical issues of wellhead burning that engineers and policy makers will need to consider as this mitigation strategy is examined as a standard oil spill response tactic. For context, we examine a potential wellhead blowout scenario over a range of oil flows and examine the regimes of two-phase pipe flows, their dependence on wellbore velocities and gas-liquid ratios, and how those regimes will influence the burn efficiency with some insight from our experimental observations from two-phase spray burn testing. Among the critical findings that we present is that the worst-case discharge flow rate cannot be assumed to be the worst-case wellhead burning scenario.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85211889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.685565
Michael Lowry, Lincoln Heaney
The Coastal Response Program is a Western Canada Marine Response Corporation (WCMRC) initiative that brings existing response programs under one umbrella. The objective is to enhance these interrelated initiatives and ensure they have coordinated support to maintain an operational ready state. The program improves WCMRC's overall capacity by building strong relationships with industry, coastal communities and First Nations by involving them in spill response in a meaningful way. This paper will provide an update on how WCMRC is rolling out the program on Canada's west coast and will discuss some of the benefits and challenges that WCMRC has experienced. While local issues will bring unique challenges to every jurisdiction, some of the broader principles of the community involvement under the Coastal Response Program can help other response organizations and coastal communities be better prepared.
{"title":"Coastal Communities and Response Planning","authors":"Michael Lowry, Lincoln Heaney","doi":"10.7901/2169-3358-2021.1.685565","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.685565","url":null,"abstract":"\u0000 The Coastal Response Program is a Western Canada Marine Response Corporation (WCMRC) initiative that brings existing response programs under one umbrella. The objective is to enhance these interrelated initiatives and ensure they have coordinated support to maintain an operational ready state. The program improves WCMRC's overall capacity by building strong relationships with industry, coastal communities and First Nations by involving them in spill response in a meaningful way. This paper will provide an update on how WCMRC is rolling out the program on Canada's west coast and will discuss some of the benefits and challenges that WCMRC has experienced. While local issues will bring unique challenges to every jurisdiction, some of the broader principles of the community involvement under the Coastal Response Program can help other response organizations and coastal communities be better prepared.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86889183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.1141152
Karen N. Stone, A. Rangwala, Kamal Arsava, M. Gollner, B. Gullett, N. Lamie
In situ burning is an efficient response method that quickly removes large quantities of oil from the marine environment eliminating the need for collection, storage, and transport. The combustion of hydrocarbons mainly yields carbon dioxide and water; however, it also creates large plumes of black carbon soot and residues of incompletely burned oils. Three research projects focusing on improving burn efficiencies show promise to make an already efficient response method even more efficient. Specifically, a technology to increase heat transfer back into the crude oil result in more complete combustion greatly reducing carbon soot is nearing completion and will soon be ready for transfer to industry for commercialization. A study reconfiguring existing booming techniques allows more oxygen into the fire resulting in decreased soot production and cleaner burns. Finally, a fundamental study into the phenomena of fire whirls demonstrates a dramatic increase in volumes of oil burned while greatly reducing emissions. Emissions and efficiencies of the studies are compared with standard pool fires.
{"title":"Improved In Situ Burn Efficiencies: An Overview of New Techniques and Technologies Resulting in Cleaner Burns","authors":"Karen N. Stone, A. Rangwala, Kamal Arsava, M. Gollner, B. Gullett, N. Lamie","doi":"10.7901/2169-3358-2021.1.1141152","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.1141152","url":null,"abstract":"\u0000 In situ burning is an efficient response method that quickly removes large quantities of oil from the marine environment eliminating the need for collection, storage, and transport. The combustion of hydrocarbons mainly yields carbon dioxide and water; however, it also creates large plumes of black carbon soot and residues of incompletely burned oils. Three research projects focusing on improving burn efficiencies show promise to make an already efficient response method even more efficient. Specifically, a technology to increase heat transfer back into the crude oil result in more complete combustion greatly reducing carbon soot is nearing completion and will soon be ready for transfer to industry for commercialization. A study reconfiguring existing booming techniques allows more oxygen into the fire resulting in decreased soot production and cleaner burns. Finally, a fundamental study into the phenomena of fire whirls demonstrates a dramatic increase in volumes of oil burned while greatly reducing emissions. Emissions and efficiencies of the studies are compared with standard pool fires.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83726093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.687018
Adam W. Davis, Dalina Thrift-Viveros, Commander Matt S. Baker
During the height of historic flooding from Hurricane Harvey's rainfall, a rupture occurred in a 16-inch, 80 psia (65 psig) natural gas pipeline crossing the Neches River east of Beaumont, Texas. Over the preceding five days, Hurricane Harvey stalled over the area, generating rainfall totals between 35 and 60 inches. The storm broke the record for rainfall totals in the U.S., with 60.58 inches reported in Nederland, Texas and 60.54 inches near Groves, Texas. The Neches River was in extreme flood conditions, cresting the day after the pipeline rupture at a historic high of 19.59 feet (nearly 10 feet above major flood stage and nearly 7 feet above the former historic record from 1994). At the request of the U.S. Coast Guard Marine Safety Unit (MSU) Port Arthur, NOAA's Emergency Response Division provided scientific support for the incident including on-scene support from the NOAA Scientific Support Coordinator (pre-deployed in Port Arthur, Texas for disaster response) as well as technical assistance from the NOAA Scientific Support Team in Seattle and Baton Rouge. Products and support provided by NOAA included air hazard modeling using ALOHA (Areal Locations of Hazardous Atmospheres) as well as the overall hazards assessment. ALOHA modeling indicated that several significant ignition sources were located within the specific threat zone identified. However, no ignition occurred and no injury or further damage resulted from the release. This incident highlights the advantages and limitations of using ALOHA to model a subsurface natural gas release from a large underwater pipeline provided in the context of an ongoing response to historic flooding and high intensity search and rescue and emergency port operations resulting from a natural disaster.
{"title":"NOAA Scientific Support for a Natural Gas Pipeline Release During Hurricane Harvey Flooding in the Neches River Beaumont, Texas","authors":"Adam W. Davis, Dalina Thrift-Viveros, Commander Matt S. Baker","doi":"10.7901/2169-3358-2021.1.687018","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.687018","url":null,"abstract":"\u0000 During the height of historic flooding from Hurricane Harvey's rainfall, a rupture occurred in a 16-inch, 80 psia (65 psig) natural gas pipeline crossing the Neches River east of Beaumont, Texas. Over the preceding five days, Hurricane Harvey stalled over the area, generating rainfall totals between 35 and 60 inches. The storm broke the record for rainfall totals in the U.S., with 60.58 inches reported in Nederland, Texas and 60.54 inches near Groves, Texas. The Neches River was in extreme flood conditions, cresting the day after the pipeline rupture at a historic high of 19.59 feet (nearly 10 feet above major flood stage and nearly 7 feet above the former historic record from 1994). At the request of the U.S. Coast Guard Marine Safety Unit (MSU) Port Arthur, NOAA's Emergency Response Division provided scientific support for the incident including on-scene support from the NOAA Scientific Support Coordinator (pre-deployed in Port Arthur, Texas for disaster response) as well as technical assistance from the NOAA Scientific Support Team in Seattle and Baton Rouge. Products and support provided by NOAA included air hazard modeling using ALOHA (Areal Locations of Hazardous Atmospheres) as well as the overall hazards assessment. ALOHA modeling indicated that several significant ignition sources were located within the specific threat zone identified. However, no ignition occurred and no injury or further damage resulted from the release. This incident highlights the advantages and limitations of using ALOHA to model a subsurface natural gas release from a large underwater pipeline provided in the context of an ongoing response to historic flooding and high intensity search and rescue and emergency port operations resulting from a natural disaster.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"53 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91400766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.688603
O. W. Brude, Vivian Jakobsen, Øyvind Rinaldo, Harald B. Tvedt, A. Rudberg, G. Gravir, Knut Erik Olsen
A near real-time environmental calculation of oil spill risk along the entire coast of Norway is developed as the EnviRisk model. Previous risk assessments utilize older decision models and repeated manual calculations that are costly as well as not accounting for the complexity of and changes in, ship traffic. Furthermore, cloud-providers have enabled enough data ingest and processing power to utilize high resolution shore and satellite based AIS data (Automated Identification System), to develop more dynamic and accurate risk calculation models than before. EnviRisk builds upon AISyRisk, an automated risk calculation model for marine traffic developed by the Norwegian Coastal Administration (NCA) and DNV GL. AISyRisk, includes a long-term data collection on probability of ship accidents and consequences for fatalities and oil spills for Norwegian waters (Norwegian Coastal Administration 2020). From AISyRisk, the probabilities for a certain oil spill (location, oil type and volume) is developed further to assess the environmental consequence in the EnviRisk model. As part of EnviRisk, extensive oil spill modelling is being performed in the cloud with the open source OpenDrift model (https://github.com/opendrift/opendrift/wiki) released by the Norwegian Meteorological Institute. This, combined with environmental sensitivity for both seabirds, marine mammals, fish and shoreline habitats, makes it feasible to quantify the environmental consequence and risk. Environmental risk is presented on a 10x10 km grid for the previous month of ship traffic and also accumulates statistics for risk over time. This paper presents the automated oil spill modelling and environmental risk calculation in EnviRisk. The method builds upon previous risk assessments for NCA for the Norwegian Coast (Braathen and Brude, 2011), for Svalbard and Jan Mayen (Braathen et. al., 2014) and for Greenland for Defence Command Denmark also in 2014 (Eikeland et. al., 2014). The approach is significantly improved particularly with respect to the oil spill modelling. Updates of AISyRisk and EnviRisk data and calculations are done monthly and the results published on a web portal administered by the Norwegian Coastal Administration where aggregated results are publicly available.
{"title":"EnviRisk – Automated Environmental Risk Assessment for Ship Traffic in Norwegian Waters","authors":"O. W. Brude, Vivian Jakobsen, Øyvind Rinaldo, Harald B. Tvedt, A. Rudberg, G. Gravir, Knut Erik Olsen","doi":"10.7901/2169-3358-2021.1.688603","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.688603","url":null,"abstract":"\u0000 A near real-time environmental calculation of oil spill risk along the entire coast of Norway is developed as the EnviRisk model. Previous risk assessments utilize older decision models and repeated manual calculations that are costly as well as not accounting for the complexity of and changes in, ship traffic. Furthermore, cloud-providers have enabled enough data ingest and processing power to utilize high resolution shore and satellite based AIS data (Automated Identification System), to develop more dynamic and accurate risk calculation models than before.\u0000 EnviRisk builds upon AISyRisk, an automated risk calculation model for marine traffic developed by the Norwegian Coastal Administration (NCA) and DNV GL. AISyRisk, includes a long-term data collection on probability of ship accidents and consequences for fatalities and oil spills for Norwegian waters (Norwegian Coastal Administration 2020). From AISyRisk, the probabilities for a certain oil spill (location, oil type and volume) is developed further to assess the environmental consequence in the EnviRisk model. As part of EnviRisk, extensive oil spill modelling is being performed in the cloud with the open source OpenDrift model (https://github.com/opendrift/opendrift/wiki) released by the Norwegian Meteorological Institute. This, combined with environmental sensitivity for both seabirds, marine mammals, fish and shoreline habitats, makes it feasible to quantify the environmental consequence and risk. Environmental risk is presented on a 10x10 km grid for the previous month of ship traffic and also accumulates statistics for risk over time. This paper presents the automated oil spill modelling and environmental risk calculation in EnviRisk. The method builds upon previous risk assessments for NCA for the Norwegian Coast (Braathen and Brude, 2011), for Svalbard and Jan Mayen (Braathen et. al., 2014) and for Greenland for Defence Command Denmark also in 2014 (Eikeland et. al., 2014). The approach is significantly improved particularly with respect to the oil spill modelling.\u0000 Updates of AISyRisk and EnviRisk data and calculations are done monthly and the results published on a web portal administered by the Norwegian Coastal Administration where aggregated results are publicly available.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89102462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.800005
C. Greer, N. Fortin, B. D. de Jourdan, Tahereh Boloori, J. Tremblay, A. Bakker, Jessica Wasserscheid, Susan E. Cobanli, B. Robinson, T. King, L. Whyte, Kenneth Lee
Climate change, the opening of the northwest passage, the production and transportation of oil reserves in addition to the large size and number of ocean-going vessels, are putting all Canada's oceans at an elevated risk for an oil spill. Responses to marine oil spills include physical (skimming and recovery), chemical (dispersants, herders) and biological processes (biodegradation). Natural attenuation, a weathering process that includes physical, chemical and biological action on spilled oil, is a potential remediation strategy that needs to be explored and exploited. In the Canadian context, we are using genomics approaches to better understand the natural populations of oil degrading microorganisms in our oceans, their diversity, spatial and temporal dynamics, and locations that may be more vulnerable to oil spills. The purpose of this study was to perform an evaluation of the effectiveness of an in situ microcosm experimental system to study indigenous microbial communities that have oil degrading potential and to determine whether this experimental system could have an impact on acute toxicity to various marine organisms. In situ microcosms are slitted columns that contain support matrices such as clay beads or river rocks, with or without an oil coating. Columns can be incubated in different locations, at different depths and different time periods, during which microbial biofilm develops on the support materials. By using oil coated and uncoated matrices, comparative microbial community data that demonstrates the response of the microbial community to the presence of oil can be obtained. Long-term incubations (1 year) conducted at CFS-Alert showed that known oil-degrading bacteria (Colwellia, Oleibacter, Thalassolituus, Cycloclasticus, Oceanobacter and Alcanivorax) became dominant only on the oil coated matrices, confirming their presence in the local seawater. Acute toxicity tests were performed in aquaria on a variety of test organisms to evaluate the possible effects of oil components leaching into the water from the in situ microcosms. Limited and transient toxicity to only two tested organisms (green sea urchin fertilization and green algal growth). Considering the analyses were conducted in a closed circulation system, it is highly likely that in an open ocean environment, toxicity would be negligible. Data from these studies will be valuable to support guidelines for the exploitation of natural attenuation as an alternative response measure (ARM) to address oil spills in Canadian waters.
{"title":"Characterization of the Microbial Community Structure and Function During the Natural Attenuation of Oil in Marine Environments Using In Situ Microcosms","authors":"C. Greer, N. Fortin, B. D. de Jourdan, Tahereh Boloori, J. Tremblay, A. Bakker, Jessica Wasserscheid, Susan E. Cobanli, B. Robinson, T. King, L. Whyte, Kenneth Lee","doi":"10.7901/2169-3358-2021.1.800005","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.800005","url":null,"abstract":"\u0000 Climate change, the opening of the northwest passage, the production and transportation of oil reserves in addition to the large size and number of ocean-going vessels, are putting all Canada's oceans at an elevated risk for an oil spill. Responses to marine oil spills include physical (skimming and recovery), chemical (dispersants, herders) and biological processes (biodegradation). Natural attenuation, a weathering process that includes physical, chemical and biological action on spilled oil, is a potential remediation strategy that needs to be explored and exploited. In the Canadian context, we are using genomics approaches to better understand the natural populations of oil degrading microorganisms in our oceans, their diversity, spatial and temporal dynamics, and locations that may be more vulnerable to oil spills.\u0000 The purpose of this study was to perform an evaluation of the effectiveness of an in situ microcosm experimental system to study indigenous microbial communities that have oil degrading potential and to determine whether this experimental system could have an impact on acute toxicity to various marine organisms. In situ microcosms are slitted columns that contain support matrices such as clay beads or river rocks, with or without an oil coating. Columns can be incubated in different locations, at different depths and different time periods, during which microbial biofilm develops on the support materials. By using oil coated and uncoated matrices, comparative microbial community data that demonstrates the response of the microbial community to the presence of oil can be obtained. Long-term incubations (1 year) conducted at CFS-Alert showed that known oil-degrading bacteria (Colwellia, Oleibacter, Thalassolituus, Cycloclasticus, Oceanobacter and Alcanivorax) became dominant only on the oil coated matrices, confirming their presence in the local seawater.\u0000 Acute toxicity tests were performed in aquaria on a variety of test organisms to evaluate the possible effects of oil components leaching into the water from the in situ microcosms. Limited and transient toxicity to only two tested organisms (green sea urchin fertilization and green algal growth). Considering the analyses were conducted in a closed circulation system, it is highly likely that in an open ocean environment, toxicity would be negligible. Data from these studies will be valuable to support guidelines for the exploitation of natural attenuation as an alternative response measure (ARM) to address oil spills in Canadian waters.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82169479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.689559
N. Kinner, D. Helton, G. Shigenaka
Chemical dispersants were employed on an unprecedented scale during the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico, and could be a response option should a large spill occur in Arctic waters. The use of dispersants in response to the DWH spill raised concerns regarding the need for chemical dispersants, the fate of the oil and dispersants, and their potential impacts on human health and the environment. Concerns remain that would be more evident in the Arctic, where the remoteness and harsh environmental conditions would make a response to any oil spill very difficult. An outcome of a 2013 Arctic oil spill exercise for senior federal agency leadership identified the need for an evaluation of the state-of-the-science of dispersants and dispersed oil (DDO), and a clear delineation of the associated uncertainties that remain, particularly as they apply to Arctic waters. The National Oceanic and Atmospheric Administration (NOAA), in partnership with the Coastal Response Research Center (CRRC), embarked on a project to seek expert review and evaluation of the state-of-the-science and the uncertainties involving DDO. The objectives of the project were to: identify the primary research/reference documents on DDO, determine what is known about the state-of-the-science regarding DDO, and determine what uncertainties, knowledge gaps or inconsistencies remain 689559 regarding DDO science. The project focused on five areas and how they might be affected by Arctic conditions: dispersant efficacy and effectiveness, physical transport and chemical behavior, degradation and fate, eco-toxicity and sub-lethal impacts, and public health and food safety. The Louisiana University Marine Consortium (LUMCON) dispersants database was used as a source of relevant literature generated prior to June 2008. The CRRC created a database that compiled relevant research thereafter. The six to ten experts on each of the panel were from academia, industry, NGOs, governmental agencies and consulting. Despite the fact that their scientific perspectives were diverse, the panelists were able to generate hundreds of statements of knowns and uncertainties about which all of the members agreed. This required detailed discussion of 1000s scientific papers. While the cutoff date for literature considered was December 31, 2015, the vast majority of the findings are still relevant and most of the uncertainties remain. As the ice in the Arctic diminishes and maritime development and activity increase, these five documents can inform discussions of the potential use of dispersants as a spill response option in both ice-free and ice infested Arctic waters.
{"title":"State-of-the Science of Dispersants and Dispersed Oil in Arctic Waters","authors":"N. Kinner, D. Helton, G. Shigenaka","doi":"10.7901/2169-3358-2021.1.689559","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.689559","url":null,"abstract":"\u0000 Chemical dispersants were employed on an unprecedented scale during the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico, and could be a response option should a large spill occur in Arctic waters. The use of dispersants in response to the DWH spill raised concerns regarding the need for chemical dispersants, the fate of the oil and dispersants, and their potential impacts on human health and the environment. Concerns remain that would be more evident in the Arctic, where the remoteness and harsh environmental conditions would make a response to any oil spill very difficult. An outcome of a 2013 Arctic oil spill exercise for senior federal agency leadership identified the need for an evaluation of the state-of-the-science of dispersants and dispersed oil (DDO), and a clear delineation of the associated uncertainties that remain, particularly as they apply to Arctic waters. The National Oceanic and Atmospheric Administration (NOAA), in partnership with the Coastal Response Research Center (CRRC), embarked on a project to seek expert review and evaluation of the state-of-the-science and the uncertainties involving DDO. The objectives of the project were to: identify the primary research/reference documents on DDO, determine what is known about the state-of-the-science regarding DDO, and determine what uncertainties, knowledge gaps or inconsistencies remain 689559 regarding DDO science. The project focused on five areas and how they might be affected by Arctic conditions: dispersant efficacy and effectiveness, physical transport and chemical behavior, degradation and fate, eco-toxicity and sub-lethal impacts, and public health and food safety. The Louisiana University Marine Consortium (LUMCON) dispersants database was used as a source of relevant literature generated prior to June 2008. The CRRC created a database that compiled relevant research thereafter. The six to ten experts on each of the panel were from academia, industry, NGOs, governmental agencies and consulting. Despite the fact that their scientific perspectives were diverse, the panelists were able to generate hundreds of statements of knowns and uncertainties about which all of the members agreed. This required detailed discussion of 1000s scientific papers. While the cutoff date for literature considered was December 31, 2015, the vast majority of the findings are still relevant and most of the uncertainties remain. As the ice in the Arctic diminishes and maritime development and activity increase, these five documents can inform discussions of the potential use of dispersants as a spill response option in both ice-free and ice infested Arctic waters.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"94 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82210893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-01DOI: 10.7901/2169-3358-2021.1.1141683
E. Miller
Band returns provide an inexpensive and relatively passive means of evaluating survival in the wild after rehabilitation for oil contamination. Unfortunately, most encounters are made when a banded bird is shot by hunters or found dead or injured, with limited sightings of live, banded birds in the wild. This study examines band encounters received on oiled birds that were washed, rehabilitated, banded and released by Tri-State Bird Rescue and Research, Inc. (Tri-State) during the twenty-six years from 1990 to 2016. Included in these data are 228 sightings of live birds that were oiled following the Deepwater Horizon MC252 incident, and 363 encounters (live or dead) of birds impacted by other spills. Not included are birds treated by Tri-State but banded under other permits, such as the 283 birds rehabilitated and released following the 1993 Tampa Bay oil spill. Analysis of these encounters overall reveals information on species survival post-release, distance traveled by individual birds, and evidence of breeding success.
{"title":"Band Encounters of Oiled Birds Rehabilitated and Released by Tri-State Bird Rescue & Research, Inc. between 1990–2016","authors":"E. Miller","doi":"10.7901/2169-3358-2021.1.1141683","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.1141683","url":null,"abstract":"\u0000 Band returns provide an inexpensive and relatively passive means of evaluating survival in the wild after rehabilitation for oil contamination. Unfortunately, most encounters are made when a banded bird is shot by hunters or found dead or injured, with limited sightings of live, banded birds in the wild. This study examines band encounters received on oiled birds that were washed, rehabilitated, banded and released by Tri-State Bird Rescue and Research, Inc. (Tri-State) during the twenty-six years from 1990 to 2016. Included in these data are 228 sightings of live birds that were oiled following the Deepwater Horizon MC252 incident, and 363 encounters (live or dead) of birds impacted by other spills. Not included are birds treated by Tri-State but banded under other permits, such as the 283 birds rehabilitated and released following the 1993 Tampa Bay oil spill. Analysis of these encounters overall reveals information on species survival post-release, distance traveled by individual birds, and evidence of breeding success.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76494116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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