Explosion at Medupi power station.

Dave

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An explosion has rocked Medupi Power Station in Lephalale less than a week after Eskom announced that the station – the biggest dry-cooled and most expensive power station in the world – had attained commercial operation status.

On Monday morning, Eskom in a statement confirmed that the coal-fired power plant “experienced an explosion on the Unit 4 generator at approximately 22h50 on 8 August. The incident is suspected to have resulted in Unit 5 tripping.”




So the workers at Medupi managed to blow a generator unit up within one week of the station receiving commercial operation status.

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biometrics

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Dave

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@Dave


Reading through to the link to Engineering News in the Maverick article shows that they are discussing average energy availability, not output. The generator is still capable of 800MW but it breaks down so often that it’s availability is below 70%, not that it’s outputting only 70% of capacity.



Dr Titus Mathe reported that the three Medupi units and the one Kusile unit currently in commercial operation had, for the financial year to date, experienced a total of 84 unit trips. Medupi unit trips rose from 20 during the 2018 financial year to 66 in the 2019 financial year, which runs to March 31.

He also revealed that the average energy availability factor (EAF) for the Medupi units was below 70% between April and December last year, with Unit 6, which was the first unit to enter into commercial operation in 2015, having been shut for repairs for three months from the start of September to the end of November.

The immediate target is to return to an EAF of 70%, which is well below the 92% ‘use requirement specification’ target set for the units.
 

biometrics

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@Spizz should have a better idea, but i wouldn't expect anything like a year lead time for what I would presume to be a reasonably common generator. Don't most power stations use similar generation units?
When the bolt dropped in the Koeberg generator it took ages.
 

biometrics

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Nuclear, especially old nuclear is a different thing altogether, I wouldn’t be surprised if everything there was custom built.
Steam is steam. Power is still generated the old way.
 

Paul Hjul

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and just think the morons want to build a pebble bed reactor at Thyspunt for which there is no reliable backup power supply available to the plant because Eskom refused to undertake transmission capability upgrades.

An explosion at a coal plant is one thing, an explosion at a nuclear plant quite another.
 
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