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Re:Australians Scour Desert for Dangerous Radioactive Capsul... by JoeAltmaier on Sunday January 29, 2023 @10:07AM (#34568734)
Curious. I would expect something that seems so threatening, has such a tiny effect on the environment that it can't even be detected. Something not adding up.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by galleywest200 on Sunday January 29, 2023 @10:21AM (#34568864)
This also happened in Ukraine. The capsule was lost in a gravel pit and ended up being built into the wall of an apartment and several people died as a result.

https://en.wikipedia.org/wiki/Kramatorsk_radiological_accide...

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by JoeAltmaier on Sunday January 29, 2023 @10:25AM (#34568905)
Not really a regionally significant nuclear accident then. About the same as a gas leak?
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by aqme28 on Sunday January 29, 2023 @10:38AM (#34569040)
“A few people here may die” is a relatively serious nuclear accident. Worse than three-mile island at least.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by Waterluvian on Sunday January 29, 2023 @11:15AM (#34569436)
I don’t disagree. But I wonder if the cost to recovering this pellet would save more lives spent in another way.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dsfyu404ed on Sunday January 29, 2023 @11:32AM (#34569662)
A few grand to dig it out of a wall? A few hundo to slap some lead shielding over it (it is an X-ray source after all)?

In any case the primary expense is going to be one of paying off all the people to get the right approvals. Crunching the numbers on how to safely rectify it and actually going through those actions will be dirt cheap compared to getting someone with the "right credentials" to tell the government, the insurers and whoever else that your obvious solution any highschooler can crunch the numbers on is in fact acceptable

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by Waterluvian on Sunday January 29, 2023 @11:39AM (#34569768)
I think finding it is the expensive part.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dsfyu404ed on Sunday January 29, 2023 @11:56AM (#34569998)
It pretty much broadcasts its location if you wave the right instrumentation around.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by Symbiote on Sunday January 29, 2023 @02:22PM (#34571677)
You "just" need to wave that instrument over 1400km of highway, potentially with a 100m+ width if the capsule has been kicked some distance away by a truck tyre.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by Waterluvian on Sunday January 29, 2023 @03:08PM (#34572150)
I’m trying to imagine the scale of this. I guess it depends on how close you have to be to pick up the signal. And how many false signals there might be.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dsfyu404ed on Sunday January 29, 2023 @03:22PM (#34572306)
I was talking about the "gets concreted into a wall" case.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by sebastien_b on Sunday January 29, 2023 @11:55AM (#34569981)
Did you work at Ford as an executive during the Pinto era?
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by Waterluvian on Sunday January 29, 2023 @12:02PM (#34570064)
I insist they are safe at any speed so long as you keep their gas tanks empty!
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by mc32 on Sunday January 29, 2023 @01:53PM (#34571341)
It seems the pinto narrative was framed in way to make it look worse but compared to other cars of similar type it wasn’t all that bad[1]. This exaggerated narrative despite vindicating data is perpetuated in biz ethics.

[1] https://www.hemmings.com/stories/2017/10/17/misunderstood-ca...

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dsfyu404ed on Sunday January 29, 2023 @02:45PM (#34571916)
Yup. The lesson to be learned once you dig into it is "if you're doing some industry standard thing that someone could ever potentially portray as seedy definitely don't document it".
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by ChuckNorris89 on Sunday January 29, 2023 @10:32AM (#34568974)
A gas leak will either blow you up or kills you quicker and can be identified and fixed quickly but radiation kills you slowly, making identification of the cause very tricky for authorities.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by DonHopkins on Sunday January 29, 2023 @10:48AM (#34569130)
Or you end up raising a family of mutants.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dehrmann on Sunday January 29, 2023 @01:16PM (#34570934)
/goes to eat a Rio Red grapefruit.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dehrmann on Sunday January 29, 2023 @01:14PM (#34570913)
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by throwanem on Sunday January 29, 2023 @10:51AM (#34569159)
Not to rehash my other comment, but depending on the nature of the source it might become regionally significant if somebody screws up bad enough.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by phyzome on Sunday January 29, 2023 @10:31AM (#34568968)
This is the nature of highly radioactive materials. Walk past it? No problem. Walk on the crushed capsule, brush your hand against the bottom of your shoe, eat a sandwich? Die horribly.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by JoeAltmaier on Sunday January 29, 2023 @12:25PM (#34570333)
Hyperbole.

   "the equivalent of 10 X-rays in an hour"
So no, walk on it and you would never know. Nobody dies, not without carrying it around for days. Then they get burns.

It's important to understand the numbers - and the magnitude of this radiation source is concerning but not dire.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by colanderman on Sunday January 29, 2023 @01:10PM (#34570871)
> crushed capsule

is key here -- leading to ingestion, which is much more dangerous than brief proximity: https://en.wikipedia.org/wiki/Committed_dose#Physical_factor...

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dkjaudyeqooe on Sunday January 29, 2023 @01:19PM (#34570965)
"An hour of exposure at about a meter away is the equivalent of having 10 X-rays, and prolonged contact can cause skin burns, acute radiation sickness and cancer, they said."

Ingesting is of course a completely different story and will indeed kill you horribly.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by cwillu on Sunday January 29, 2023 @06:17PM (#34573835)
“Walk on the crushed capsule [and then] brush your hand against the bottom of your shoe [and then] eat a sandwich? Die horribly.” is the intended reading.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by SamPatt on Sunday January 29, 2023 @10:08PM (#34575381)
That's one meter away.

Inside your body? Another story.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by phyzome on Sunday January 29, 2023 @11:14PM (#34575708)
The point is that the danger depends on how people interact with it. That's why they're doing this PSA (and trying to recover it). It would be very easy for that little canister to get ruptured, and loose radioactive material is a very different game from nicely-packaged-in-a-capsule material.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by genmon on Sunday January 29, 2023 @10:35AM (#34569006)
Because it’s enormously dangerous to stand a meter from, and people near it won’t even know (eg it could have been picked up in a tyre tread so someone is carrying it around), but radiation and therefore ability detect drops according to the inverse square law so it will be hard to find from much further away. And Australia is big.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by JoeAltmaier on Sunday January 29, 2023 @12:28PM (#34570362)
Again, hyperbole.

   "the equivalent of 10 X-rays in an hour"
People routinely get exposed to that during their normal job. An x-ray is a fraction of a year's natural exposure from the sun. Airline pilots experience this radiation in a few months at work.

The numbers matter. This instance, the device hardly matters. Not as much as a national news report anyway. We'd be better off reading about pay disparity or access to health care.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by dalmo3 on Sunday January 29, 2023 @02:23PM (#34571694)
> People routinely get exposed to that during their normal job.

What jobs you're referring to? Your examples cite years and months but the quoted sentence states "in an hour."

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by roywiggins on Sunday January 29, 2023 @02:57PM (#34572024)
It's all sort-of fine until someone brings it home and sticks it on a shelf and thereby kills their entire family. Walking around with this in your pocket will kill you eventually.

This sort of thing has happened before with loose radioactive sources.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by testplzignore on Sunday January 29, 2023 @03:41PM (#34572504)
To back up your point: If "X-ray" is a chest x-ray, then per https://xkcd.com/radiation/ this would be equivalent to one-tenth of a head CT scan, which are routinely done without consideration to any increased risk of cancer.

If the goal is to minimize loss of life, I think there are far better things that time could be spent on than looking for this thing. People are bad at thinking about opportunity cost.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by tialaramex on Sunday January 29, 2023 @06:24PM (#34573889)
You're bad at arithmetic, that's 100 boxes on the XKCD chart, so it's one-hundredth of a head CT scan, and the medics might not tell you they considered increased risk, but if they actually didn't consider it they're incompetent, that's a non-trivial effect.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by throwaway89201 on Sunday January 29, 2023 @10:18AM (#34568830)
> Something not adding up.

You are only asking questions, I understand. Please don't do that here [1].

See the Goiânia incident [2] for inspiration how such a tiny thing could be so threatening to random unsuspecting animals. While the medical source in that case was much larger – perhaps making it less dangerous because it was easier to find, although it did fall apart in more pieces – the effects when in close contact with tissue or being ingested are very similar.

[1] https://news.ycombinator.com/newsguidelines.html

[2] https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by JoeAltmaier on Sunday January 29, 2023 @10:27AM (#34568926)
Not my question at all.

How can it be so deadly/radioactive, yet so hard to detect?

Further, asking questions is indeed the point of these discussions. Re-reading the standards I see no prohibition.

And reading that reference article, the loss it cites was 19Tb (19 trillion bequerels). This lost capsule in Australia contains less than 100. So around what? 10 billion times less dangerous?

Thanks for the reference material, now I'm more sure than ever that this article is some kind of clickbait about a fairly miniscule risk being trumpeted as a national incident.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by cjbgkagh on Sunday January 29, 2023 @11:01AM (#34569247)
I think it’s more about a failure of process than this particular piece of radioactive material. Being proportionally cavalier about it would invite lazier handling. The next piece of radioactive material could be more dangerous. The mining company will be sent the bill and police get to practice a real life scenario. And everyone knows don’t do that again.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by magicalhippo on Sunday January 29, 2023 @01:05PM (#34570807)
> How can it be so deadly/radioactive, yet so hard to detect?

First, it's important to keep in mind that there are different forms of radiation: ionizing[1] which is dangerous and non-ionizing which is not typically dangerous[2]. Furthermore, ionizing radiation consists of three types, alpha, beta and gamma which have different properties and thus dangerous in different ways and amounts.

The source in question contained cesium-137, which decays almost entirely (95%) by emitting beta particles. The beta particles are stopped by about 1 meter of air[3], but can do significant damage to living cells if nearby.

Thus, trying to detect it is a bit like trying to see a bright flashlight in a fog. Even though it's bright you won't see it until you're really close.

[1]: https://en.wikipedia.org/wiki/Ionizing_radiation

[2]: https://en.wikipedia.org/wiki/Non-ionizing_radiation

[3]: https://en.wikipedia.org/wiki/Beta_particle

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by aliqot on Sunday January 29, 2023 @10:34AM (#34568999)
use your real name and say it with your chest
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by ChuckNorris89 on Sunday January 29, 2023 @10:30AM (#34568954)
>You are only asking questions, I understand. Please don't do that here [1].

Where in the HN rules is it forbidding to ask questions?

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by gnad_sucks on Sunday January 29, 2023 @10:53AM (#34569178)
> Please don't post insinuations about astroturfing, shilling, bots, brigading, foreign agents and the like.

I think he's referring to this. Indeed, there's nothing wrong with asking questions. I imagine that "you're only asking questions" is a reference to an usual technique of conspiracy theorists of pretending they're just asking questions to defend against being called out on baseless accusations. "Are they putting something in the water that's making the frogs gay? I'm just asking questions".

We don't know the intent here, but I agree with him that "something doesn't add up" could be an insinuation of conspiracy theory, and so against the guidelines.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by LarryMullins on Sunday January 29, 2023 @11:31AM (#34569647)
That rule bans exactly what he's doing, accusing people of "just asking questions" in the derogatory sense.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by aww_dang on Sunday January 29, 2023 @12:54PM (#34570658)
I'm amazed at the gymnastics possible with such an innocuous phrase. It is almost perverse. Imagine trying to parse this out starting from a position of good faith.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by gnad_sucks on Sunday January 29, 2023 @02:30PM (#34571752)
You think I'm not in good faith - that's fine.

But surely you have to concede that "I'm just asking questions" make it really easy to insinuate without directly stating, yes?

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by aww_dang on Sunday January 29, 2023 @11:57PM (#34575910)
I'm just admiring the twists here, trying to understand and appreciate the gymnastic talent involved.

The triple handspring is when you insinuate that users of that phrase must be insinuating. Perfect 10 - 10 - 10 - 10 Olympic finish is when it is all done out of an abundance of paranoia.

I thought the conspiracy theorists were the paranoid and deranged ones, which is why we didn't want their unfounded and nutty comments? Apparently there is a conspiracy theorist lurking behind every tree, bush and use of, "I'm just asking questions".

Surely you have to concede with that logic there must be innumerable other phrases, trees and bushes that we haven't yet discovered?

I propose that we form a committee so that we may ensure the safety of our fragile establishment views from this menace.

Or maybe we could just skip it and engage with comments at face value, in good faith. Maybe he said just what he said? Don't know about you, but I'm a terrible psychoanalyst. Nor do I have time to go deep on every turn of phrase on the Internet.

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by gnad_sucks on Monday January 30, 2023 @04:37PM (#34586787)
I understand where you're coming from. You're just asking questions.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by 13of40 on Sunday January 29, 2023 @11:20AM (#34569503)
I read that as "don't accuse other HN users of being shills" not "you can't say this news article seems a little suspect".
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by gnad_sucks on Sunday January 29, 2023 @02:31PM (#34571779)
I agree the two are different in some respects; at the same time I think the idea that baseless insinuations undermine the conversation works just as well towards news articles as towards HN users.
Re:Australians Scour Desert for Dangerous Radioactive Capsul... by throwanem on Sunday January 29, 2023 @10:43AM (#34569085)
Cs-137 is dangerous to animals (including humans) in close proximity, precisely because of the gamma radiation it emits. But, like any radiative emission, the power density drops off with the inverse square of distance from the source, which makes it detectable well beyond any range at which it poses a hazard. Think of stadium lights: if you stand five feet in front of one, it will blind you, while from a mile away, it's harmless but you still can see it. With gamma radiation you need a detector (ie a Geiger counter), and with an at the moment presumably unshielded Cs-137 source, a reasonably sensitive detector will indeed pick it up at some distance. So, at worst, if you put enough people in trucks with Geiger counters along the same route the original truck followed, sooner or later you will find the lost source.

That said, this method while effective may take some time, and the major concern here may not be so much the direct radiation emission from the intact source, as the possibility of damage leading to dispersal of its contents. In the Goiânia incident of 1987 [1], scrappers removed a Cs-137 source from an improperly decommissioned radiotherapy machine and broke it open, dispersing the loose isotope material it contained in ignorance of the danger it posed. Several people died, others were badly injured, and at least one house and a lot of soil had to be removed for disposal. If this lost Australian source is similar in design to that one, warning people about it while looking for it is an eminently sensible public safety measure.

[1] https://en.m.wikipedia.org/wiki/Goiânia_accident

Re:Australians Scour Desert for Dangerous Radioactive Capsul... by Ankaios on Sunday January 29, 2023 @11:37AM (#34569736)
If you dropped a Cs-137 source of this scale way out in the middle of nowhere, far away from any road or crops, it might not be a big deal. The half life is only 30 years, and it could get buried under soil or in silt. However, losing it near civilization isn't good. (Even sparsely settled areas.) It's a shiny metal object, and if it's in a gas station, hotel, or restaurant parking lot, some kid could easily find it. Plus, gamma sources are relatively easy to detect, which should help the search.

If the military lost a hand grenade on a similar road trip, I'm sure people would want to find it, and this source is at least as dangerous.