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DTSTAMP:20240516T165719Z
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DTSTART;TZID=America/Chicago:20240515T143000
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UID:IOSC_IOSC 2024_sess111_PAPER243@linklings.com
SUMMARY:Chemical characteristics and acute toxicity of low sulphur fuel oi
 ls and their fate and behaviour in cold water and Arctic conditions
DESCRIPTION:Paper\n\nLiv-Guri Faksness (SINTEF Ocean), Jon Arve Røyset (No
 rwegian Coastal Administration), Dag Altin (Biotrix), Kristin Sørheim (SIN
 TEF Ocean), Silje Berger (Norwegian Coastal Administration), and Per Dalin
 g (SINTEF Ocean)\n\nThe Norwegian Coastal Administration (NCA) and SINTEF 
 have since 2016 studied several of the new generation low sulphur fuel oil
 s (LSFO). This paper presents findings from an Arctic Council project join
 t led by the two working groups Protection of the Arctic marine Environmen
 t (PAME) and Emergency Prevention Preparedness and response (EPPR). The pr
 oject is named “Low Sulphur fuels, fate and behaviour in cold water condit
 ions" where 7 LSFOs from refineries in Europe and Canada were studied. The
  focus was on the oils' physical-chemical characteristics and acute toxici
 ty. Low-energy Water Accommodated Fractions (WAFs) of the LSFOs were prepa
 red at 2 °C, and the WAFs chemical characteristics and acute toxicity stud
 ied using the marine copepods Calanus finmarchicus and Acartia tonsa as te
 st organisms. In addition, toxic units were calculated. \nFrom the SINTEF 
 and NCA studies, as well as other studies performed by other research inst
 itutes and the industry, it has become evident that Very Low Sulphur Fuel 
 Oil (VLSFO) and Ultra Low Sulphur fuel Oil (ULSFO) particularly have lower
  viscosity and higher pour point than their “traditional” Heavy Fuel Oil (
 HFO) equivalents. Other properties vary significantly as well. This was al
 so observed here, as there was a wide variability in physical-chemical pro
 perties and the chemical composition of these LSFOs, for example their pou
 r points varied from -36 to +39 °C, which will result in very different be
 haviour if these oils are spilled on sea, especially under cold water cond
 itions. \nThe results showed that the chemical composition of the WAFs and
  their corresponding acute toxicity varied, as for some oils, no mortality
  was observed in the test organisms, while for other oils it was observed 
 up to 100% mortality when the test organisms were exposed for the highest 
 WAF concentration. The studies have identified a span in properties, chemi
 stry, and relative toxicity of the oils and their WAFs, and their characte
 ristics relevant for impact on the marine environment when spilled in cold
  or Arctic seawater. The importance of generating data about the fuel oil 
 properties combined with experience has become key factors when deciding t
 he best strategy for an oil combat response operation to these fuels today
 .\n\nTag: Response\n\nSession Chair: John Inge Karoliussen (NOFO)
URL:https://iosc2024.conference-program.com/presentation/?id=PAPER243&sess
 =sess111
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