Talk:Spent fuel pool

message: Sorry, just a simple question: on most images showing such spent fuel pools the water in the tub has this strange glooming blueish color? What causes this color? Is that because of radiation coming from the fuels or is that external light? Thanks, "No more Fukushima!"
::Cherenkov radiation 129.67.86.189 (talk) 19:21, 15 March 2011 (UTC)
replies: text:  Cherenkov radiation is very unlikely (you can observe only close to the source of the beta radiation (=the rods)). It's just the effect of normal lamps and the water, just like the water seems blue at the beach of an island if it's clear enough. The water in a nuclear facility is kept very clear to reduce corrosion to a minimum. --137.226.40.42 (talk) 17:55, 17 March 2011 (UTC)
replies: text: The blue effect is, in fact, often Cherenkov radiation.  See reference .  --70.112.150.168 (talk) 20:22, 19 March 2011 (UTC)
replies: text:  Yes, in that picture it's mostly Chrenkov radiation, but in the pictures in the article here it's clearly lamps illuminating the pool. If there is Cherenkov radiation, then it's not visibale as the lamps are much brighter. --91.61.102.207 (talk) 23:25, 20 March 2011 (UTC)

text: On the left there appears to be a lamp, but the other rods look like cherenkov welling up from below. But if it is in dispute, it should stay removed. 129.67.86.189 (talk) 19:23, 2 April 2011 (UTC)
thread_title:  Cherenkov radiation 

message: "storage methods in the United States require fuel to be stored such that in the event of a catastrophic loss of coolant the steady state temperature of the fuel assemblies in air does not exceed the cladding melt temperature."  This is preposterous, which is probably why there's no citation to it.  Federal regulations (10 CFR 50.46) specify that the emergency core cooling system should keep the cladding at no more than 2200 ºF.  This has nothing to do with storage.  How hot an uncooled fuel rod assembly can get is subject to the laws of physics, not NRC rulemaking.  
http://www.nrc.gov/reading-rm/doc-collections/cfr/part050/part050-0046.html
68.173.53.167 (talk) 02:19, 18 March 2011 (UTC)
replies: text:  Agreed, removing this unless someone feels it should be re-added.  The temperature of a fuel rod stored in air is a purely physical calculation, I see no mention of any system built to provide air-cooling of spent fuel rods should they be exposed, and HIGHLY skeptical that cooling by convection alone (as in a loss of coolant or loss of power accident) is even possible.131.107.0.81 (talk) 19:31, 18 March 2011 (UTC)
replies: text:  Adding reference on air cooling of spent fuel assemblies.  According to the referenced Sandia Labs study (quoted between pages 19-20) Even using the international "wide spacing" used in non-us reactor SFP's, convective cooling begins to be possible ONLY after 5 days of reactor shutdown.  In a dense-packed pool such as found at US reactors, convective cooling would not work for any fuel with less than 1 year of time underwater in the cooling pool, out of the reactor.  Based on these reports I re-assert that convective cooling in a spent fuel pool as an emergency plan is NOT possible. Alvarez, et al. 2003. "Reducing the Hazards from Stored Spent Power Reactor Fuel in the United States" http://www.irss-usa.org/pages/documents/11_1Alvarez.pdf 131.107.0.81 (talk) 20:11, 18 March 2011 (UTC)
thread_title:  Storage methods and heat generation 

message: Link #18 cites a Time.com article but has no link to the primary source. After a cursory search I was unable to find the Brookhaven 1997 report on used fuel risks. This section makes a very bold claim and it should cite a primary source, the existing source does not link to the report either. I question the reliability of that citation.  — Preceding unsigned comment added by 65.246.166.58 (talk) 16:46, 5 June 2012 (UTC)
thread_title: Risks

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thread_title:  External links modified