Replacing the Subs

[Colin Parkinson]

Deuterium/heavy water-moderated reactors are not form-factor friendly in a sub. Everyone (SSN/SSGN/SSBN operators) all run pressurized, light-water enriched-fuel ( vice non-enriched CANDU) reactors, so….NO CANDU…

I saw what you did there

 

[suffolkowner]

Yes, it’s inherent to the design and spacing of the fuel-rods and safety feature of dumping the moderator in an emergency…complete shutdown as air between the fuel tube spacing doesn’t support fission. That’s part of why a CANDU reactor is relatively large for its rated power output.

seems like it might have been a design improvement/possibility

CANDU reactor - Wikipedia

en.wikipedia.org

"The main change, and the most radical among the CANDU generations, is the use of pressurized light water as the coolant. This significantly reduces the cost of implementing the primary cooling loop, which no longer has to be filled with expensive heavy water. The ACR-1000 uses about 1/3rd the heavy water needed in earlier-generation designs. It also eliminates tritium production in the coolant loop, the major source of tritium leaks in operational CANDU designs. The redesign also allows a slightly negative void reactivity, a major design goal of all Gen III+ machines.[47]"

 

[Good2Golf]

yeah I must of been confused about something there. Did we stop making heavy water? I just seem to remember reading something about a change in the heavy water system quite a while ago. Maybe to do with Tritium retrieval?

I haven’t heard that there has been any change to D2O production for our production CANDUs (600s, 750s and 880s). The natural uranium fuel (about 3/4% U-235 in the U-238)

I hadn’t heard that an ARC had gone into production.

 

[KevinB]

I thought Tony Stark designed the ARC.

 

[OldSolduer]

Deuterium/heavy water-moderated reactors are not form-factor friendly in a sub. Everyone (SSN/SSGN/SSBN operators) all run pressurized, light-water enriched-fuel ( vice non-enriched CANDU) reactors, so….NO CANDU…

You are wise in the ways of science Sir G2G

 

[Good2Golf]

You are wise in the ways of science Sir G2G

Well, maybe a little bit of that…and my father was a nuclear physicist and involved with certification of the first CANDU reactors in the early-60s after working at AECL in Chalk River in the late-50s.

 

[calculus]

The article in the link suggests that the CPSP will select a winner in 2026. First time I have seen a date...

Hanwha Ocean accelerates efforts to sell warships in North America

Hanwha Ocean is set to establish a subsidiary in the United States, as part of its strategy to expand into the North American defense industry.

www.koreatimes.co.kr

 

[KevinB]

The article in the link suggests that the CPSP will select a winner in 2026. First time I have seen a date...

Hanwha Ocean accelerates efforts to sell warships in North America

Hanwha Ocean is set to establish a subsidiary in the United States, as part of its strategy to expand into the North American defense industry.

www.koreatimes.co.kr

A date that will come and go…

 

[Retired AF Guy]

A date that will come and go...

If they did declare a winner (say the KS-III) in 2026, it would still take a few years to iron out all the details, plus Canada would have to wait until in line the South Koreans have finally produced all the subs for their navy. You might not see any production until after 2030 or so.

 

[Good2Golf]

If they did declare a winner (say the KS-III) in 2026, it would still take a few years to iron out all the details, plus Canada would have to wait until in line the South Koreans have finally produced all the subs for their navy. You might not see any production until after 2030 or so.

Not necessarily…sometime for other reasons (own cash flow, alliance balance, etc.) nations have been merged into the flow before, so it wouldn’t necessarily be a certainty of a sequential wait.

 

[Retired AF Guy]

Not necessarily…sometime for other reasons (own cash flow, alliance balance, etc.) nations have been merged into the flow before, so it wouldn’t necessarily be a certainty of a sequential wait.

Makes sense.

 

[Colin Parkinson]

Not necessarily…sometime for other reasons (own cash flow, alliance balance, etc.) nations have been merged into the flow before, so it wouldn’t necessarily be a certainty of a sequential wait.

They could build one sub as a trainer and station it there for crews to rotate through, while awaiting the next sub to be built for us.

 

[suffolkowner]

Not necessarily…sometime for other reasons (own cash flow, alliance balance, etc.) nations have been merged into the flow before, so it wouldn’t necessarily be a certainty of a sequential wait.

and like Japan, South Korea usually has Hyundai and Hanwha producing subs so there might be a little room. Not that we should get too excited. Plus there may be too many SK working in Windsor to give the sub line a boost

 

[suffolkowner]

https://twitter.com/x/status/1730930974731505970

interesting detail is the swedish offer to the Dutch includes LM CMS and mk 48 torpedoes

 

[Sub Standard]

https://twitter.com/x/status/1730930974731505970

interesting detail is the swedish offer to the Dutch includes LM CMS and mk 48 torpedoes

Not a huge surprise considering the Walrus currently carries the MK48.

 

[Good2Golf]

Still just about subs…

U.S., U.K., Australia sign agreement to jointly operate deep space radar network

As part of the trilateral security partnership known as AUKUS, a network of three space-tracking radars will be set up in Australia, the United Kingdom and the United States.

spacenews.com

 

[KevinB]

Still just about subs…

U.S., U.K., Australia sign agreement to jointly operate deep space radar network

As part of the trilateral security partnership known as AUKUS, a network of three space-tracking radars will be set up in Australia, the United Kingdom and the United States.

spacenews.com

Well Space is sort of Navy right…

 

[Good2Golf]

Well Space is sort of Navy right…

Captain of the Sixth Enterprise agrees.

 

[dimsum]

Well Space is sort of Navy right…

USSF would like to have a word.

 

[Kirkhill]

USSF would like to have a word.

But do they have Space Marines?