Worth a try


log in

Advanced search

Message boards : Science (non-SETI) : Worth a try

Author Message
Profile Chris SProject donor
Volunteer tester
Avatar
Send message
Joined: 19 Nov 00
Posts: 31626
Credit: 12,621,108
RAC: 32,683
United Kingdom
Message 1547322 - Posted: 25 Jul 2014, 9:35:06 UTC

Nuclear ship

Sirius B
Volunteer tester
Avatar
Send message
Joined: 26 Dec 00
Posts: 11047
Credit: 1,632,046
RAC: 2,782
Israel
Message 1547352 - Posted: 25 Jul 2014, 10:53:36 UTC

Definitely not...

North Sea Oil
Sea Empress
13 largest oil spills in history

...& from your link...

"Just in its first year, 115,000 gallons of low-level waste was released into the sea."

Low level to us maybe, but what about the ocean's ecosystem?
____________

Profile JulieProject donor
Volunteer moderator
Volunteer tester
Avatar
Send message
Joined: 28 Oct 09
Posts: 20408
Credit: 3,699,466
RAC: 6,580
Belgium
Message 1547358 - Posted: 25 Jul 2014, 11:19:22 UTC

Can't see the link here as it's probably from the BBC. Will check it at home tonight, thanx Chris:)
____________


rOZZ

Profile Bob DeWoody
Avatar
Send message
Joined: 9 May 10
Posts: 1508
Credit: 553,434
RAC: 91
United States
Message 1547360 - Posted: 25 Jul 2014, 11:36:39 UTC

I was a kid when the Savannah was being built and thought it was the most beautiful ship ever. I even still have a model of it on one of my shelves. There are low levels of radioactive material being released into the atmosphere at most coal fired power plants due to the trace levels found in most coal. Had the world not been afraid of nuclear powered ships the Savannah's problems could have been overcome.
____________
Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required.

Profile Chris SProject donor
Volunteer tester
Avatar
Send message
Joined: 19 Nov 00
Posts: 31626
Credit: 12,621,108
RAC: 32,683
United Kingdom
Message 1547365 - Posted: 25 Jul 2014, 12:13:41 UTC
Last modified: 25 Jul 2014, 12:17:09 UTC

Cost was another downside. A ship with a nuclear reactor is always going to cost more. While the US's Nimitz-class aircraft carriers are all nuclear-powered, it was decided that the UK's new Queen Elizabeth super-carrier would use a combination of gas turbines - fuelled with kerosene - as well as diesel engines instead for cost reasons. The cost concerns of nuclear are obvious. The reactor costs much more to build than a diesel engine. But on top of that, maintenance and eventual disposal of redundant reactors present unpredictable costs.

But there is a plus side. The initial price of a nuclear-powered ship would be considerably more, but because commercial uranium is cheaper than conventional fuels, the fuel cost for a nuclear ship is much less, says John Carlton, professor of marine engineering at City University, London. Nuclear-powered vessels can go years without refuelling, covering great distances. The Savannah was capable of circling the planet 14 times at 20 knots without needing additional fuel.

But despite the massive practical obstacles, blue-sky thinkers are starting to again discuss the concept in an age of concern over climate change and consistently high oil prices. Nuclear power ships emit no CO2 and greenhouse gas. Wheatley says that makes them pretty attractive. "In due time it will happen, the prospects are reasonable for a resurgent of nuclear power, there is a future for nuclear power ships, it's just a matter of time."

But several challenges must be met. Ports with facilities for accepting nuclear waste and refuelling ships with uranium would need to be built.

Hi Julie, yes it is a BBC link.

Profile William Rothamel
Avatar
Send message
Joined: 25 Oct 06
Posts: 2542
Credit: 1,177,225
RAC: 119
United States
Message 1547369 - Posted: 25 Jul 2014, 13:16:01 UTC - in response to Message 1547360.
Last modified: 25 Jul 2014, 13:17:53 UTC

I clambered all over the NS Savannah with my wife and kids in Charleston South Carolina. It was part of their Maritime Museum at Patriot's Point there in Mt Pleasant. They had a WW2 Carrier there as well as one of the old Diesel Subs like my father commanded when he was in the Navy.

I seem to remember that the Savannah is no longer there. I am going to Charleston this November for my 50th reunion for the Citadel class of 1964. I am actually staying there at Patriot's Point and will enjoy the ships there once again.

Profile Chris SProject donor
Volunteer tester
Avatar
Send message
Joined: 19 Nov 00
Posts: 31626
Credit: 12,621,108
RAC: 32,683
United Kingdom
Message 1547560 - Posted: 25 Jul 2014, 19:10:02 UTC

I seem to remember that the Savannah is no longer there

The Savannah is presently located in the Port of Baltimore, Maryland, under a long-term layberth contract with Canton Marine Terminals.

Savannah


Post to thread

Message boards : Science (non-SETI) : Worth a try

Copyright © 2014 University of California