Видео

Lower operating pressure and basically no corrosion is my guess But I'm guessing the byproducts produced in the coolant were nasty to say the least... Also hydrogen and steel bo not play nice at elevated temperature and pressure

Linked in the description! When I got it digitized I was surprised to find it Spanish! ruclips.net/video/e5AOcPYXZyg/видео.html

It was built in imperial, translated to Spanish, and then translated back to English so yeah it was 1"

@whatisnuclear sure, it was a USA design. Just found it funny to hear an english voiceover in a Film about a USA nuclear design not meant for the military that uses metic.

Well, the imperial system is legally pegged to the metric system so i'm not entirely surprised.

Not sure where the original English soundtrack is. This is just what came out of the National Archives fault of 16mm films. I explain how I get these here: ruclips.net/video/jJ0lxki0a2U/видео.html

@@whatisnuclear Thanks for the reply! The videos that you are uploading are a critical part of our scientific history and I thank you.

Is it really though? Worse than pounds per square inch? Sure, I have an intuition as an American about what a PSI is....but if I had been raised and schooled using a saner system like metric it would be equally relatable. At least I know how to convert the metric stuff into other metric measurements by dividng and multiplying by 10....

@@hmbpnz I can do metric, smart-ass. Kg are a unit of mass, not force. Pressure is force/area, not mass/area. The correct metric unit would be Pascals.

​@@hmbpnzboth are kind of half good because neither kg nor pounds are force related but mass related units. One should rather use a force there, like newtons

1 kg(f)/cm2 is a mouthful to pronounce but easy to understand: it is approximately the air pressure at sea level. Conveniently, there is a pressure unit for that: 1 atmosphere or 1 bar is approximately 1 kgf/cm2, with an error of about 3%. 1 atm is also approximately 15 pound-force of bald eagle per square inch of of an Olympic-size swimming pool. This imprecision is perfectly acceptable for general discussion when not chasing decimal points. The SI unit of pressure is pascal: 1 Pa is 1 newton of force per 1 meter squared of area. 1 Pa is a rather small unit, so megapascals are often used in plumbing (1 MPa ≈ 10 atm), and hectopascals in weather science where more preceision is needed (1013.25 hPa = 1 atm = 760 mmHg = 29,92 inHg). If you think it’s complicated, look into radiation dosimetry :)

That's just what the film reel they had at the National Archives happened to have I guess. They made these films and gave them as presentations all around the world in different languages. Obviously there was an english soundtrack somewhere as well, but that's not the one I found and digitized.

@@whatisnuclear Of course, right, makes sense. Well anyway, thank you for this, I really enjoyed it.

Love it. I was just reading about deuterated hydrocarbons in one of the OMRE reports. Probably the most obscure reactor coolant/moderator

She did an amazing job. I was a little surprised when I picked up the hard drive from the scanners and the soundtrack was in Spanish. She saved the day for the English speaking crew.

It's my pleasure. The best hobby.

To be fair we've run lots of reactors with liquid metal sodium and NaK coolant as well, which is explosive on contact with water in the presence of oxygen. We can control for this (e.g. by keeping oxygen out).

@@whatisnuclear Yes, I know about those. It just sounds like a bad idea cooling something with low-flash point hydrocarbons. Wonder if they ever tried using Diesel fuel, which is harder to ignite. I mean, it was the 50's and 60's, when every nuclear idea was a good one, right? :)

Honestly I keep expecting to run into an example of a boiling mercury system like they tried on conventional power stations - I mean they had Pluto so why not

@@BobOgden1 How about just plain old liquid mercury? Clementine did that. doi.org/10.1080/00295450.2023.2176686

@@whatisnuclear Oh be still my heart 😍My life is complete. What could possibly go wrong

I noticed that too. So cool!

Has to be the cheese material used in nuked pizza pockets in the US. That gets critical to be sure. 😂

Lots of people thought, and still think, organic fluids may make a good reactor material. Here's a recent publication from MIT: dspace.mit.edu/bitstream/handle/1721.1/117025/1-s2.0-S1738573316300031-main.pdf

I built one. Tiny 1500 kw backyard off grid kinda thing. I had a high pressure high temperature mayonnaise loop feeding the steam generator for the turbine. So anyway it ran great at around 975psi about 550 degree Fahrenheit.

@@sambrose1 Did you have to run a hydro-cracker for the eggs?

GMO bees, GMO bees, that swarm, and feed off of radiation, and beat their wings to cool the reactor...duh...

@@sambrose1 where did you source your organic mayonaise? I heard it's important to get good quality. Did you have any problems with mayo fouling in your condenser core fins??

"because cooling water had boiled out of some channels" . oh god.... it is like the RBMK.......

An RBMK cannot be critical on natural uranium. It needs some enrichment in order to be able to reach criticality. But yeah, both reactors are a pressure tube design. And also yes, the CANDU shares the pesky positive void coefficient with our big, grumpy Soviet reactor, albeit much smaller. And in case of an emergency, a CANDU can dump its moderator out of the Calandria. Something that is impossible with graphite blocks. That's why that coefficient is much more troublesome, not to mention dangerous, in an RBMK.