Callide C4 (tentatively) offline for a year – following turbine hall fire yesterday!


Another short article (Part 4) to follow Part 1 and Part 2.and Part 3 yesterday about what went on with the fire/explosion at Callide C power station.

Here’s the newish ‘MT PASA DUID Availability’ widget this morning from ez2view, highlighting the view AEMO has (provided by the Market Participants) for the scheduled availability each day over the coming year for the 4 x units at Callide B and Callide C:

2021-05-26-at-09-45-ez2view-MTPASA-DUIDAvail-CallideUnits

This is compared to what the prognosis was at 12:00 yesterday (i.e. before the event).  Two key points:

1)  With the time-range selected (i.e. 12 months forward) we see that Callide C4 is not currently forecast to be back at all through that period.

2)  We have 700MW (i.e. Callide B1 and then B2) coming back for Saturday 5th June and then Sunday 6th June 2021;

3)  We have Callide C3 (i.e. in the same turbine hall, but hopefully suffering minimal damage) coming back for Wednesday 9th June 2021.

Readers are cautioned that the prognosis for Callide C4 would be highly uncertain at this point (i.e. given that teams would only just being able to return to the site this morning to inspect the damage).

1)  Given that situation, the prudent thing would be for the participant to give a very far distant ‘return to service’ date for the unit whilst they sort through what the real situation is on the ground…

2)  However, suffice to say that anything involving the generator and/or turbine may take many weeks (or months) to fix.

——————-

PS1 … in this update from CS Energy at 09:45 this morning that they note:

“Based on an initial inspection overnight, Unit C4 has experienced major damage and failure of the turbine. It will take some time to fully understand the cause of the failure and the steps that will need to take to repair the unit.”

… so it seems likely it will be offline for many months!

 

 

About the Author

Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time. As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.

2 Comments on "Callide C4 (tentatively) offline for a year – following turbine hall fire yesterday!"

  1. If the media buzz is to be believed, and it is a turbine rotor ripping out through the casing, the parts alone to fix it are the better part of a year to source. And it’ll be weeks (at a minimum) before there’s enough failure investigation to understand precisely what needs to be ordered, and whether you can simply do ‘like for like’, or do you have a design failure (and then what happens with the sister units C3 and Tarong North). And even within all of that, the insurance claim is going to be pretty messy.

  2. Through the grapevine – in other words just a rumour. The destroyed unit did not have a self starting capability and so the generator could also function as a motor by feeding back off the grid. It has been suggested that a lubrication failure one end was fighting a generator that was acting as a motor due to a software/hardware failure allowing the grid to feed back into it.

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