Breaking News Francis Scott Key Bridge Collapses

[ShadowArxxy]

Basically, the "oh shit" problem is that the main engine has to shut down if the pumps go offline (because otherwise it'll catastrophically overheat or seize up), and the breakers going off the way they did is pretty much the *only* thing that will actually drop ALL the pumps offline in a single stroke. And even so, if it had happened anywhere else, losing propulsion in that manner would not be a big deal because they can restart the main engine as soon as they've got just *one* main generator and the emergency online, they just can't do it *quickly* because they need to charge the compressors to kick the engine.

 

[49ersfootball]

Crap like this is why I hate most social media. Bunch of tinfoil hat shit disturbers.

Lara Logan is NUTS.

 

[Bacle]

Basically, the "oh shit" problem is that the main engine has to shut down if the pumps go offline (because otherwise it'll catastrophically overheat or seize up), and the breakers going off the way they did is pretty much the *only* thing that will actually drop ALL the pumps offline in a single stroke. And even so, if it had happened anywhere else, losing propulsion in that manner would not be a big deal because they can restart the main engine as soon as they've got just *one* main generator and the emergency online, they just can't do it *quickly* because they need to charge the compressors to kick the engine.

How big a compressor do these ships run?

Because I'm guessing you need several massive tanks discharging at once to get the pistons moving again.

 

[ShadowArxxy]

How big a compressor do these ships run?

Because I'm guessing you need several massive tanks discharging at once to get the pistons moving again.

What I’ve found so far is that compressed air starters are standard on large diesels because an automobile style electric starter motor rapidly becomes impractical with increased size, and that maritime regulations require them to have compressed air tankage sufficient for twelve starts on a non-reversible engine (which is what Dali had; the engine has to be stopped and started “backwards” to reverse) or six starts for a reversible engine. But it's a relatively slow process that is not meant to be done on the fly.

Edit: There's nothing in the NTSB preliminary report about whether or not the crew was in the process of trying to restart the main engine, but if they did then the second blackout would have forced them to start over again. They can't even try to start the main engine until the cooling and lubricant pumps have been started and verified first.

 

[The Whispering Monk]

Well, the Baltimore Port has fully reopened.

Less than 12 weeks after the bridge's destruction.

 

[Buba]

So much for the doom and gloom

 

[The Whispering Monk]

Now we just have to see how long it takes the Bridge to go back up.

 

[49ersfootball]

Well, the Baltimore Port has fully reopened.

Less than 12 weeks after the bridge's destruction.

WOW.

 

[49ersfootball]

Now we just have to see how long it takes the Bridge to go back up.

Likely 4 years tops.

 

[Robovski]

Now that the port is open the graft will begin. Contracts will need awarded, designs approved, and loads of money involved. Way more than will be necessary but that's Dem politics.

 

[The Whispering Monk]

Now that the port is open the graft will begin. Contracts will need awarded, designs approved, and loads of money involved. Way more than will be necessary but that's Dem politics.

Unfortunately, it's politics in general for the US right now. It's something we really need to try and reign in all over.

 

[Buba]

This is politics everywhere since Ugluk gave Hroom a succulent boar for his vote in the Cave Council elections ...