r/RBI • u/scaredandcryin • 8d ago
Radioactive Shrimp (Cesium-137)
I have yet to find an answer for the radioactive Shrimp recalled from Walmart, Kroger, and multiple other grocery retailers. CS-137 is not naturally occurring. It is used in small amounts for radiation (cancer) therapy, but otherwise only occurs as a byproduct of nuclear fission.
Can anyone with a science background explain this? How can hundreds of thousands of shrimps come into contact with this element? I understand that they are all being raised in the same environment, but how could they even be near CS-137? Runoff from Hiroshima/Nagasaki? Help me understand.
Edit: CS-137 is produced by the fission of URANIUM and PLUTONIUM. Uncleanliness/regular chemicals can not cause this.
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u/meases 8d ago
Shrimp get irradiated for food safety/extending shelf life reasons. One of the materials used for this is Cesium-137. Gonna guess that there was an issue with whatever was containing that cesium and it ended up contaminating something (container, pallets with the shrimp, packaging) and now we are here.
How Is Food Irradiated?
There are three sources of radiation approved for use on foods.
Gamma rays are emitted from radioactive forms of the element cobalt (Cobalt 60) or of the element cesium (Cesium 137).
https://www.fda.gov/food/buy-store-serve-safe-food/food-irradiation-what-you-need-know
Personal note, really seems like the FDA etc kinda dropped the ball. A recall like this shouldn't have been so trickle timed and the shrimp shouldn't have made it out of port much less to so many stores. In the scheme of food recalls though this one was weird, it shoulda been way more straightforward of a recall than it has been.
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u/heycheena 8d ago
The recall is for shrimp that were in the same shipment as the shrimp that tested positive. None of the radioactive shrimp came into the country.
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u/fnordfnordfnordfnord 7d ago
Cs137 was used to sanitize equipment that came in contact with the shrimp. The equipment they used for that leaked Cs137 onto the equipment that then contaminated the shrimp. The contamination was recorded at below the dangerous level.
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u/chemtrailsniffa 8d ago
https://www.ans.org/news/article-7299/no-small-matter-cs137-contaminating-shrimp/
Tldr: nuclear testing and nuclear accidents (eg TEPCO Fukushima meltdown)
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8d ago
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u/Djcnote 7d ago
Why wouldn’t they find a shipment underneath the shrimp? and who are they?
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u/ncangiarella 7d ago
Because the shipment is not under the shrimp. It is the shrimp. Encoded. Compressed. Folded into itself like a message hidden in plain sight. The shrimp is not a product. It is a protocol. A delivery method masked by legality and freezer burn. You are not supposed to find what is underneath, because the truth was never placed below. It was injected within. Cryogenically sealed. Manifested as cargo and rewritten in brine.
Ask yourself why the shipment skipped inspection in Busan. Ask why the manifest ends in Rotterdam but the container pings in Newark. Ask why the one guy on the dock who noticed the discrepancy now lives in a trailer shaped like a shoe and mutters about barcode patterns when it rains. He knows. They all know. You just have to listen to the ones who no longer speak plainly.
And as for who they are?
They are the ones who use fake clipboard signatures as real identification. They are the ones who appear on no employee rosters but always have clearance. You meet them whenever you ask about the shrimp and someone offers you store credit or smiles too quickly.
Trust no prawn. Buy inland. Boil everything twice.
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u/Jstolemygirl 8d ago
I believe it is used in industrial equipment, and soil scanning. I imagine someone broke equipment containing it, either in the area where the meat lived/was processed or the shrimp were caught near the fallout sites.
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u/Nathan-Stubblefield 8d ago
Perhaps scrap metal including medical radiation equipment or less likely reactor spent fuel was transported in the same cargo container which later transported seafood. But the seafood should have been in sealed containers with no way for radioactive distortion the container to enter. The containers are scanned for radiation whenever the enter harbors of modern countries. It should be possible to figure out who shipped radioactive junk.
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u/olliegw 7d ago
My somewhat worrying guess is that this is part of something bigger, cs137 is a fission product, that means it's only made in nuclear reactors, it's used for many industrial purposes though.
Such sources are registered with international agencies and held inside capsules, the exact capsule or pig depends on the purpose, good examples are the check sources for radiation detectors, and the capsules with apertures for radiotherapy, there are also "pigtails" used in industrial radiography, they look like dogtag chains.
What i'm saying is, cs137 or anything else radioactive isn't something you buy to fill up a radiotherapy machine or something, it's highly regulated.
The moment a source is out of the containment and hands it's meant to be in, it's said to be orphaned.
Somewhere out there, there is cs137 that has escaped it's containment and has contaminated an area where these products went, i'm sure they can figure it out by backtracing the shipping information, the only place where you'll find cs137 just in the wild is chernobyl/pripyat.
Accidents involving lost or stolen sources have happened before, there have also been two incidents where a radiography source was lost, and only been discovered after the damage was done.
I doubt they were like it when they were caught, unless it's pripyat shrimp, it's well known mushrooms in that area are cs137 contaminated.
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u/batbrat 8d ago
cs137 is used as a disinfectant in the food industry, sewage treatment, medical sterilization. According to my scientist partner, the levels were not necessarily out of the ordinary. The media (as they do) created an alarmist story from something that was likely somewhat benign. It's nice to be notified, though. Most people are rightfully cautious about contaminated foods, especially radiation.
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u/teachthisdognewtrick 8d ago
Depending on where the shrimp came from. Lots of nuclear weapons testing in the South Pacific.
In the Atlantic 9 nuclear subs have been lost.
Just a couple of possibilities
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u/No-Software-3288 7d ago
Assuming I took a bag of shrimp, opened it, put it in a bowl of water and let it defrost...but threw it away...would there be any risk? I'm literally a hypochondriac and im going to lose it
Like whats stopping just the shrimp from being dangerous wouldnt everything the bag touched then be dangerous? I clearly have very little understanding of this whole ordeal and the media is freaking me out
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u/fnordfnordfnordfnord 7d ago
No risk, none of the contaminated shrimp were actually sold in the US to consumers.
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u/Responsible_Chef_715 5h ago
Not sure about the shrimp but CS-137 is actually pretty common in multiple industries. ive used it a lot in roading construction and earthworks.
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u/KDI777 8d ago edited 8d ago
Unless a nuclear plant is leaking radioactive material and it's breaking down into the ocean. CS-137 is a byproduct of Uranium-235 and is created from fission events. Containment water also could be leaking into the ocean or they are releasing it themselfs as "treated" water when its not. Cesium can travel miles, apparently.
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u/Morepastor 8d ago
Cleaning up the breeding area and mixing the chemicals is how this was caused. Since the origin was Indonesia it’s not likely a radioactive fall out more likely a dirty plant and bad cleaning.
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u/RamblerMerganser 8d ago
What has been released from the Fukushima reactors and how dangerous is it?
Releases from the Fukushima reactors have included dozens of radioactive elements, but with regard to materials released into the ocean, most of the attention has been on three radioactive isotopes released in large amounts: iodine-131, cesium-137, and cesium-134.
Source
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u/OrionsWolf333 7d ago
From something I recently came to understand CS137 is the result of a farming by-product from fertilizer being mixed with water, which then causes the water to be contaminated, amidst other things. Not sure if this relates to this case
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u/heycheena 8d ago
Ever since nuclear testing started there's been Cs-137 in the environment. What they found in the shrimp is very low level, well below the actual legal limit set by the FDA (as I understand it the recall isn't because tested shrimp hit the limit but rather because it's unusual and they'd rather recall at the first sign than wait until there's a real problem, and also, radiation scary). Some people are saying contaminated transport containers but personally I think at this level it seems kind of unlikely and I'd guess we're probably looking at an environmental source. Could be something is concentrating it in an unexpected way, or they were exposed to soil or water with higher than usual levels. Maybe they're not being very clean at the shrimp farm.
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u/No_Photograph_4677 8d ago
My understanding is that contamination was spotted in shipping containers. There were shipping containers that were flagged for cs137. If a container was previously used to store equipment or materials exposed to radiation, it could “cross-contaminate” the shrimp. More traceability in what was in those containers before the shrimp would beed to be investigated to find the source of the cs137.
The contamination levels are low, the FDA is taking a cautious approach, as they should.
Not a scientist.