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re: This is a serious, developing situation in Garden Grove, Orange County, California.

Posted on 5/24/26 at 9:49 am to
Posted by fightin tigers
Downtown Prairieville
Member since Mar 2008
78487 posts
Posted on 5/24/26 at 9:49 am to
Probably runaway reaction
Posted by ChatGPT of LA
Member since Mar 2023
6422 posts
Posted on 5/24/26 at 9:58 am to
Can you explain? I see the tank size as being smaller. Why can't they evacuate the threatened tanks? Off load them and move away?

Or is this heat a chemical reaction within the tank? If so, why?
Posted by fightin tigers
Downtown Prairieville
Member since Mar 2008
78487 posts
Posted on 5/24/26 at 10:05 am to
quote:

Or is this heat a chemical reaction within the tank? If so, why?


Would be my thought. I have no specifics on this chemical or what happened though.

Basically the catalyst was added and now the reaction is happening. Seems to be exothermic so heat is being released. Could be some sort of oxidizing reaction and is just feeding itself or there was enough catalyst intoduced to keep the reaction going for a while. Eventually the reaction will use up all the catalyst and they just have to pull heat away until that happens.
This post was edited on 5/24/26 at 10:07 am
Posted by Trevaylin
south texas
Member since Feb 2019
11048 posts
Posted on 5/24/26 at 10:22 am to
"less than 1 cp". Sure unreacted, pure MMA low viscosity. MMA that had a thermal kick, in a large volume unstirred tank, for 4 days is no longer pure MMA. Its now peanut butter consistency
Posted by LSUFanHouston
NOLA
Member since Jul 2009
41103 posts
Posted on 5/24/26 at 10:31 am to
From what I read, the tank valves are FUBAR

Can’t open tank, can’t release pressure. I’m guessing this tank needs regular releases.

Looks like this place is on the edge of a small industrial park and across the street from a neighborhood. Wonder who was there first?
Posted by MyRockstarComplex
The airport
Member since Nov 2009
5059 posts
Posted on 5/24/26 at 10:35 am to
quote:

Looks like this place is on the edge of a small industrial park and across the street from a neighborhood. Wonder who was there first?


Dear god the houses around there are (were) expensive.
Posted by GatorPA84
PNW
Member since Sep 2016
6293 posts
Posted on 5/24/26 at 10:36 am to
Wow this is a big deal!!!
Posted by CitizenK
BR
Member since Aug 2019
15785 posts
Posted on 5/24/26 at 10:38 am to
quote:


"less than 1 cp". Sure unreacted, pure MMA low viscosity. MMA that had a thermal kick, in a large volume unstirred tank, for 4 days is no longer pure MMA. Its now peanut butter consistency


Who would use a 34,000 tank (I assume atmostpheric with no jacket or coils) as a reactor? I would think at best for a facility this size, the reactions are in 10,000 gal or less sized reactors with a way to control temperature via heating or coolling.
Posted by EagleEye99
Member since Dec 2017
3248 posts
Posted on 5/24/26 at 10:45 am to
From my understanding, these tank have an internal cooling coil system (assuming chilled water pumped through coils) and somehow the cooling system failed. Not sure why they don't have some type of emergency block valves to bypass and have ability to free flow cold water through them in an emergency. You'd think this would be on a double/triple redundancy safety system, but I'm not familiar with exact process. As stated above, once that happened the MMA started to solidify or gel and rendered the valves inoperable to evacuate material from the tank.
Posted by Trevaylin
south texas
Member since Feb 2019
11048 posts
Posted on 5/24/26 at 12:07 pm to
The video of the tank looks like a flat roof storage tank not intended to be a reactor.
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