ScribbleLive

@Edano was just looking for rpv and came across this I think you have to laugh or you would cry it is in relation to the whistleblowing that resulted in them being shut down in '02
www.tepco.co.jp

@elainekirk :) sounds like in the army.

I like theway they take responsibility for their actions
" Chairman, Hiroshi Araki, will resign and will be appointed as an Advisor (as of
September 30).
- President, Nobuya Minami, will resign and will be appointed as an Advisor (by
mid-October).
- Executive Vice President, Toshiaki Enomoto, will resign (as of September 30).
- Counsellors, Gaishi Hiraiwa and Shoh Nasu, will resign and will be appointed
as Advisors (as of September 30)"

@edano this may be of interest I am still looking
The “healthiness” of Reactor Pressure Vessel (RPV)’s head parts at PWRs should be another focal point. As mentioned earlier in this article, replacements of the core shroud were carried out as a “preventive measure,” which means to ensure the “healthiness” of the shroud, at Fukushima I-1, I-3, and I-5. However, TEPCO never reported to the agency that there were cracks in these shrouds. Several electric companies (Kansai Electric Power Co., Shikoku Electric Power Co., and Kyushu Electric Power Co.) have replaced their 11 units of reactor vessel head (all of them are PWRs) as a “preventive measure”. Did these reactor vessel heads have any defects at the replacements?
cnic.jp

daiichi was expected to operate for 60yrs IAEA 2002
In 1996, MITI has launched a program to provide a conceptual framework by which the
integrity of ageing nuclear power plants are examined and addressed, using three plants
that have been in operation since 1970/71 (Mihama 1, Tsuruga 1 and Fukushima Daiichi-
1) as pilot projects. This programme assumes that the plants will operate for 60 years.
(IAEA 2002)
docs.google.com

back, what's new?

@lillymunster edano asked about previous damage to #1 rpv and I found the doc I posted suggesting that though the shroud replacements take place the lids remain and could be a weak spot at least thats how I read it

There was some damage to #1, the steam dryer was the item in question in the 02 whistleblower incident and I think there may have been an RPV cap problem in that issue also.

@lillymunster the iaea link i gave said 60yrs

Okay, the IAEA doc is the plan to suck another 20 years of life out of the older power plants. This talks about the whole overhaul process they did on 1 etc. when they do/did the shroud replacement they put some new parts in for those things on the list in the IAEA document.

I see these overhauls as largely smoke and mirrors because while they update some critical parts it ignores other critical parts like older steam lines and pipes that are encased in concrete, pipes in general because there has not been any sort of complete re-pipe program on old reactors. Also the RPV can't be replace so it is still old and brittle. I really have to wonder if any of the RPVs split or broke when they hit super high pressures now that we know venting didn't work at most.

How would the brittleness factor work with the quake? Would it make things break or crack easier? Would a pipe connection be more prone to breaking off?

@lillymunster I have a doc I downloaded it is clean but is over the limit for google docs so would you like a copy mailed or the addy to download your own

@elainekirk can you email it?

but i cannot click the links :(
you sent me the print version.

@Edano ah it just came up in my search this is the first link www.rskonline.de if you tell me which you are interested in I will see if I can find them I got that one by copy/pasting the title into google

hmm ... the catalytic "recombinators" that are supposed to neutralize hydrogen in nukes can cause hydrogen explosions themselves. www.rskonline.de

@Edano well thats dandy isn't it

www.rskonline.de hydrogen can ignite autonomously at temperatures >650°.