
interesting question Peter,, We should try a research on that one... so many factors involved in that.. I'd never thought of
by dean 7/23/2011 5:28:53 PM

in addition to embrittlement the irradiation causes buildup of He gas inside the metals which affect the heat transfer .... most reactor vessels have that limit due to damage that can be caused to the adjacent concrete.. with lower temperature limits to prevent damage..
by dean 7/23/2011 5:33:35 PM

looking at some information now Peter
by dean 7/23/2011 5:36:11 PM

@Majj the fbook like button plug in is very 'pliable' google are launching their + button using the fact that it is product/article/person specific as a selling point. a site can use that fbook button throughout its site have you checked the number against other articles?
by elainekirk 7/23/2011 5:49:27 PM

www.volian.com checking this out Peter
by dean 7/23/2011 5:55:24 PM

Nuclear agency: reactor restart months awayJapan's nuclear watchdog says it will take months to complete safety tests on the country's idled nuclear reactors. It says it is unlikely that any of the reactors will resume operating this summer.
The Nuclear and Industrial Safety Agency made the comment on Saturday, one day after it ordered power utilities to conduct stress tests in an attempt to ease public concern about the safety of nuclear power.
The tests use computer simulations to assess how well nuclear power plants can withstand emergencies such as earthquakes and tsunamis.
The agency said that it will take months for the utilities to report the results of the first phase of the 2-stage tests.
The first phase targets reactors that have been halted for regular safety checks. At least 22 nuclear reactors, about 40 percent of Japan's total, are subject to it.
Sunday, July 24, 2011 01:52 +0900 (JST)
www3.nhk.or.jp by Edano 7/23/2011 6:11:17 PM

Govt. to implement measures outside FukushimaJapan's minister in charge of the nuclear crisis says the government will consider implementing decontamination measures and health checks outside Fukushima Prefecture.
On Saturday, nuclear crisis minister Goshi Hosono visited the town of Marumori in Miyagi Prefecture, which borders Fukushima Prefecture.
He inspected an elementary school and livestock farms that were affected by radioactive contamination.
Hosono told reporters that he realized the nuclear accident is causing problems outside Fukushima Prefecture. He also said he will make sure that the government's policy is consistently applied across prefectural borders.
Saturday, July 23, 2011 22:04 +0900 (JST)
www3.nhk.or.jp by Edano 7/23/2011 6:14:32 PM

the straw is from Myagi prefecture this time
www.japantoday.comby elainekirk 7/23/2011 6:14:34 PM

I am not sure how to access them Radio.. any chance of posting here?
by dean 7/23/2011 6:19:06 PM

Radioguy.... TMI is some reference point for taking fuel out of the reactor.. who ever knows how to translate that to some educated guess on removal from fuku reactors and SFPs and.. the common pools and units 5 and 6 are not exempt at the moment.. YEARS..
by dean 7/23/2011 6:22:46 PM

peter.. I will have more. .but I need to go now.. will return
by dean 7/23/2011 6:22:59 PM

@smoss greetings you left a cryptic message earlier?
by elainekirk 7/23/2011 6:23:39 PM

back for a bit
by lillymunster 7/23/2011 6:26:58 PM

hi lilly.. @ Peter.. what I am looking for is a document that shows heatup and cooldown rate limits as compared to reactor vessel wall thinning or other factors like weld flaws etc.
by dean 7/23/2011 6:28:27 PM

@RadioGuy bought a bag of landscape rock and wrecked my back tossing it into the car
by lillymunster 7/23/2011 6:34:59 PM

@ Peter, I would think that the robust design of the RPV as compared to the thinner walled PCS would typically be able to handle higher cooldown rates and that the wall thinning over time would affect the pcs piping more. As for the reactor vessel, especially in the higher neutron flux regions adjacent to the core the irradiation induced affects would be the greatest irrespectful of heat up and cool down
by dean 7/23/2011 6:36:02 PM

@RadioGuy @RadioGuy after round one I decided to cut my losses. :-)
by lillymunster 7/23/2011 6:36:55 PM

@Dean, not sure if these are helpful BWR overhaul document from IAEA
www.houseoffoust.com Also one I think on embrittlement but it is in German.
www.houseoffoust.comby lillymunster 7/23/2011 6:44:00 PM

Index of the German document translated. I can translate sections of they look like they have potential Content
One reason for the advice 2
2 Overview of the discussions so far ............................................ ......................................... 3
2.1 Overview of the discussions so far in the RSK, as well as in the RSK-committee
LIGHT WATER REACTOR PLANT and EQUIPMENT AND SYSTEM .............................. 3
2.2 Report of Dr. Jahn to clarify the problem of danger to the
Containment by hydrogen explosion after core melt ........................................... .......... 5
3 Progress 6
4 Rating 6
4.1 Evaluation criteria and verification .............................................. .......................................... 6
4.2 answering the questions of the BMU ............................................ .................................................. ..... 7
4.3 Assessment of relevant aspects of individual .............................................. .................................................. . 14
4.3.1 Representativeness of the selected event flow sequences ........................................... ............... 14
4.3.2 Evaluation of the hydrogen concentration ............................................ ............................................ 16
4.3.3 Effectiveness ................. recombinator ignition and under probabilistic aspects 18
5 Summary 1
by lillymunster 7/23/2011 6:45:45 PM


Interesting lighting at sunrise, just grabbed this.
by lillymunster 7/23/2011 7:13:31 PM