ScribbleLive

@Edano , the story is just one chapter in the book. There used to be paperbacks. You would not want to spend that much!

Hi Dean!

hi elaine and LM

@Nancy , re skill level, for that job you had to know how to swing a mop. There will be plenty jobs like this at the plant.

that tepco release contains the revised info on #1

@dean agreed - some important events probably happened prior to the tsunami

TMI operators were inundated with alarms all across the board, the plant interlocks on safety systems automatically reacted and did their thing, I believe that the magintude of annunciation at the fukushima plant was so overwhelming the operators probably had a very hard time reacting to what was happening.. that's why I'd like to see a re-creation of every element at the begining of the earthquake. We know many of the things that happened but are still piecing them together for a final timeline, when the level in the RPV started dropping out of control and then the seconds-minutes for melt to begin

@dean : how long does it need to enter the control rods from 0% to 100% ?

@dean : in hamaoka they needed two hours (?)

Edano that sounds long to me.....

@dean : maybe in an emergency it is faster - at leasz i hope so.

I'm checking some links.. unless elaine or nancy has them for control rod drive speed... the safety rods versus control rods drive faster.. and only the safety rods are needed to stop the criticality and take the reactor to subcritical mode

elaine.. two types of rods... the blades and the smaller control rods.. and two different types of drives.. .the hydraulic (faster ones) with nitrogen back up and the ones with actual motors..

There are two types of the control rod drive mechanism: hydraulic pressure drive and motor
drive. Both types utilize the nitrogen-gas pressure stored in accumulators as driving power for
fast insertion of control rods. When an anomaly occurs or could occur at a nuclear reactor, the
fast insertion of all control rods into a reactor core is carried out all at once from the lower
part of reactor core to shutdown nuclear reactor operation (it is called that a nuclear reactor is
scrammed.) The boric acid solution injection system is provided to inject a neutron absorber
material into the reactor core to stop reactor operation when the control rods cannot be
inserted and the nuclear reactor cannot be placed in low-temperature shutdown mode.

According to the newly released data, water level fell shortly after the generator quit and temps shot up when ECCS failed.

Leth I agree. in fact after they admitted that there was fuel damage melted I thought hmmmm does it matter now to know or try to figure out when it happened.. I agree on moving forwards from where they are now,,, trying to keep detailed track of releases, posting material for all people to understand fall out in their area and how to get information around the normal channels and then finally what to do to protect ones family

I will sign nothing that I don't trust. Frankly I question anything that is gathering email addresses without assurances of how this info will be used.

elaine those docs were very good.. I saved both

@dean in light of the new information over the last 48 hours does the early morning steam releases combined with associated earth quakes become more of a potential sign of something? The two incidents happened on days there was eq activity at the same time. Other mornings with the same hot/cold/humid conditions did not produce these steam events and #3 seems to be the largest producer of lots of steam.