Thousands of gallons of diesel oil lost from grounded Transo
Discussion
http://www.bbc.co.uk/news/uk-scotland-highlands-is...
Lot of blokes on here work on rigs, so perhaps might have a better answer.
According to the news item More than 12,000 gallons of fuel have been lost from the grounded rig, with "A UK government official overseeing the operation to remove the rig from Dalmore on Lewis said most of the escaped diesel oil had evaporated."
Sorry, but I don't see it ,as last time I had a pin hole in a fuel return line ( diesel) , I had spots of fuel under the bonnet for weeks.
Lot of blokes on here work on rigs, so perhaps might have a better answer.
According to the news item More than 12,000 gallons of fuel have been lost from the grounded rig, with "A UK government official overseeing the operation to remove the rig from Dalmore on Lewis said most of the escaped diesel oil had evaporated."
Sorry, but I don't see it ,as last time I had a pin hole in a fuel return line ( diesel) , I had spots of fuel under the bonnet for weeks.
Forgive me for not reading the link, but I'd hazard a guess that most of the diesel will have spilled onto the sea surface. If so, it will have spread out extremely thinly as it is a light oil. There's a classic experiment where you put a drop of oil onto water and measure how far it spreads out. It ends up one molecule thick and therefore allows you to estimate the size of a molecule. Millikan's oil drop experiment. And I think he might have used a pond on Clapham Common(??). Anyway, the diesel is likely to have spread out extremely thinly giving it a colossal surface area compared to its volume. That would allow it to evaporate pretty quickly.
From all the time I ever repaired tractors during my apprenticeship diesel never evaporated that I can recall. It'll be spread out so thinly on the surface it won't show but it's a heavy oil compared to petrol which will evaporate.
It would still need fuel for power during the transit to Malta, once in it's final resting place any residual fuel would be removed. It's 'only' 46m3 or thereabouts of fuel which has been lost, or that's the amount they are telling us which in the grand scheme of things is a small loss of fuel. Some vessels burn 80-90m3 of fuel a day very easily. An old drill rig like that would be quite thirsty I imagine.
It would still need fuel for power during the transit to Malta, once in it's final resting place any residual fuel would be removed. It's 'only' 46m3 or thereabouts of fuel which has been lost, or that's the amount they are telling us which in the grand scheme of things is a small loss of fuel. Some vessels burn 80-90m3 of fuel a day very easily. An old drill rig like that would be quite thirsty I imagine.
mikecassie said:
From all the time I ever repaired tractors during my apprenticeship diesel never evaporated that I can recall. It'll be spread out so thinly on the surface it won't show but it's a heavy oil compared to petrol which will evaporate.
It would still need fuel for power during the transit to Malta, once in it's final resting place any residual fuel would be removed. It's 'only' 46m3 or thereabouts of fuel which has been lost, or that's the amount they are telling us which in the grand scheme of things is a small loss of fuel. Some vessels burn 80-90m3 of fuel a day very easily. An old drill rig like that would be quite thirsty I imagine.
it's just a question of how quickly it evaporates. You can smell diesel, therefore it is evaporating. If it spreads out thinly enough, which it will do on water, it will evaporate pretty quickly because the surface area will be vast compared to the depth of the spill.It would still need fuel for power during the transit to Malta, once in it's final resting place any residual fuel would be removed. It's 'only' 46m3 or thereabouts of fuel which has been lost, or that's the amount they are telling us which in the grand scheme of things is a small loss of fuel. Some vessels burn 80-90m3 of fuel a day very easily. An old drill rig like that would be quite thirsty I imagine.
[quote=Who me ?]I'm still wondering at at what temperature will diesel evaporate?
Then I look at the sea temperatures in the waters from Norway , and up around the top of Lewis.Or perhaps I'm still in "DIESEL( as opposed to Whisky ) GALORE" mode, whenever I think of the utter hebrides.
[/quote]
Can you smell it? If you can it's evaporating.
Then I look at the sea temperatures in the waters from Norway , and up around the top of Lewis.Or perhaps I'm still in "DIESEL( as opposed to Whisky ) GALORE" mode, whenever I think of the utter hebrides.
[/quote]
Can you smell it? If you can it's evaporating.
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