By Paula Owen, Tony Rice
Decommissioning of Brent Spar chronicles the occasions best as much as the hot choice to recycle the offshore set up in a Norwegian fjord; the Greenpeace crusade to forestall it being dumped at sea; the repercussions of Shell's selection to abort the decommissioning on the 11th hour; and the discussion procedures that experience happened to try to unravel the issue.
This booklet will provide a balanced, neutral account of the entire state of affairs to its contemporary, its key goal being to notify the reader in regards to the proof and mechanisms of the discussion strategy and the necessity to strategy judgements in a distinct way.
Readers will make the most of an account of the blunders made through either side, the enter from govt, the medical neighborhood, the click and public, and will observe this information to destiny environmental concerns.
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Additional resources for Decommissioning the Brent Spar
The health and safety risks to the workforce were also considered to be much greater for horizontal dismantling, involving as this would a much larger number of workers in many potentially hazardous activities. The risks of a fatality were assessed as six times higher than with the deep-sea disposal option. 8 million. But the estimate for horizontal dismantling was a staggering £46 million. Although this figure was challenged by Greenpeace and other opponents of Shell, the Royal Commission’s recommendations state explicitly that financial considerations ‘should not be overriding’ and, in any case, few outside observers on either side seemed to be particularly influenced by the costs one way or the other.
They are generally even heavier than the steel structures. The Beryl Alpha Concrete Gravity structure, for example, has steel topsides weighing 30,000 tonnes, while the total installation weighs in at 522,000 tonnes. It stands in 119m of water and can store almost a million barrels of oil. But there are even bigger structures; the Shell concrete gravity base platform for the Norwegian Troll gas field is truly immense, weighing more than one million tonnes and standing in 300m of water! It is amongst these very large structures that the problems of decommissioning and disposal are most acute.
Now, at last, the remains of the hull could be cut into manageable sections and offered for sale as scrap or otherwise disposed of. Despite the obvious engineering complexity of this option, the individual operations involved were considered not to be basically different from those relatively routinely undertaken by the offshore industry. The horizontal dismantling option was therefore kept ‘on the cards’ for comparison with the final option, deep-sea disposal. Deep-sea disposal was assessed as the technically simplest next to the rejected possibility of sinking the Spar close to where it had Copyright 1999 Tony Rice and Paula Owen worked.