The "What Is This?" game

[yamahonkawazuki]

that is true. but this was post manhattan. there was a type of reactor or this part was used in these locations. heres a diagram of the structure.

[yamahonkawazuki]

wanting to say this thing is 2.5" in diameter. if not 3". calipers are at shop though. anyhoo the drawing is from a schematic from the site. ( Oak ridge tn area) and contains MAJOR clues

[adidasguy]

So whats happening? Is there any winner? Seems to have evolved in to a discussion of nukes.

[yamahonkawazuki]

you and slips adidas were essentially tied for being closest. normally the google is your friend here.  ( specially in this game. but ill be damned if the only pictures of this item i can find, are dra2wings from a 1970s era document. on pdf the answer IS on the base, ( what it is and goes to etc. ) a bit of background information. this came from essentially a site ( a nuclear plant in the oak ridge area) reactor was more or less modeled after hanford. the initials of the project is CRBRP ( btw it ( item) was never inservice. there were some uses of it to perform a scram ( a hopper of these type balls which would shut down the process if the rods decided not to work or got stuck. this item however was structural or mechanical in nature allowing a process to happen. in a distant way it IS involved with the fuel rods. but not directly. im glowing in anticipation, ill pick closest winner if no one hits it tonight by midnight.

[pliskin]

Closer head assembly bearing.

Or

Steam turbine bearing.

[Kiwingenuity]

Lets see,

CRBRP - Clinch River Breeder reactor project
http://en.wikipedia.org/wiki/Clinch_River_Breeder_Reactor_Project

Some more details on how it was to work
http://www.osti.gov/bridge/servlets/purl/4311171-5DbhpR/4311171.pdf

The boron carbide balls they would have used for a scram (entered via gravity) are normally marble sized, and I would have assumed would be much duller than the much larger sphere you have a photo of.. The only other material would be Silver-indium-cadmium which would have been available back in 1977..

So I would guess it may be part of the assembly for introducing the liquid sodium into the system?

I have worked on most other types of power stations here, but we are nuclear free in this country...

Good luck to anyone who can guess it..

[yamahonkawazuki]

Closer head assembly bearing.

Or

Steam turbine bearing.

pliskin got it. it is a reactor vessel closure head bearing and spacer. ( i was guessing on the size of the scram setup. i was reading through pdfs for hours.
heres a picture of it with label

[Paulcet]

I just have to say, it is so cool that you have a part of a nuclear reactor.  A friend of mine has a space shuttle tile.  Anyone else have parts of really cool, not for public possession type stuff?

[codajastal]

I just have to say, it is so cool that you have a part of a nuclear reactor.  A friend of mine has a space shuttle tile.  Anyone else have parts of really cool, not for public possession type stuff?

Maybe in another thread?
On with the game
Pliskin you are up

[yamahonkawazuki]

aye paulcet. well get one goin soon enuf. 

[slipperymongoose]

I have the army manual of land warfare

[pliskin]

[jdoorn14]

Lens for a camera projector? Like a device you'd use in a classroom or lab to take pictures/project pages/parts onto a screen or magnify them to input into a PC?

[Paulcet]

Lens for a vintage 8mm movie camera?

[pliskin]

Lens for a vintage 8mm movie camera?

Sorry not part of a camera or projector.

[Paulcet]

Telescope eyepiece?

[pliskin]

Telescope eyepiece?

Sorry, no.

[pliskin]

Hint
reichert

[codajastal]

Eyepiece on a Reichert opthalmic Microscope?

[pliskin]

Eyepiece on a Reichert opthalmic Microscope?

The way eye see it you are close. The objective it to guess it exactly. Try again.