The Monju experimental reactor in Tsuruga Explained

@daniel_garcia_r explains how the Monju reactor is not a ticking time bomb (as the New York Times makes out) but a key part of the Japan's R&D in nuclear energy supply.
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JasonBall_GoodPeople @good_people

WTF?: Japan Strains to Fix a Reactor Damaged Before Quake http://nyti.ms/iI0wfu

18/06/2011 07:58:05 WIB
Hiroko Tabuchi @HirokoTabuchi

In Japan, Another Nuclear Reactor Tests Nation’s Will http://nyti.ms/j1nnLN Not my big story, but important.. w/ photographer @kosukeokahara

18/06/2011 08:37:49 WIB
Daniel Garcia-R @dgr4energy

I'm really sick of reading the press, specially foreign. They are and a full blow campaign of JP diffamation and can't stand it

18/06/2011 09:03:47 WIB
Daniel Garcia-R @dgr4energy

I work at Monju & there is nothing wrong with "react" nor "Sodium" & no "repeated (failed) attempts" to recover IVTM, but 2 Ops (now 2nd)

18/06/2011 09:06:11 WIB
Daniel Garcia-R @dgr4energy

Monju is a prototype, and because of a design problem (which is why you build prototypes to begin with), we dropped IVTM past summer

18/06/2011 09:10:08 WIB
Daniel Garcia-R @dgr4energy

Bc IVTM (InVesselTransferMachine) is very hard to access & JAEA very cautious after 1995, it has taken up to now to prepare 2nd removal op

18/06/2011 09:11:16 WIB
Daniel Garcia-R @dgr4energy

Monju has fuel but was stopped for 15y & it's not even enough to power it up (IVTM drop happened when prep for refuel for 40% power test)

18/06/2011 09:12:13 WIB
Daniel Garcia-R @dgr4energy

Monju 1995 acc was not "1 of most serious nuke acc", bc it was not a "nuke accident", & fire wasn't "devastating"→ repairs could've be fast

18/06/2011 09:13:56 WIB
Daniel Garcia-R @dgr4energy

In 1995 there was a Na leak on a circuit w/o radioactive materials/sodium (hence "no nuke acc"), steaming from a sensor (not pipe failure)

18/06/2011 09:14:51 WIB
Daniel Garcia-R @dgr4energy

Bc that circuit was not part of the nuclear side of NPP, leak monitoring wasn't enough, and detection took long→ high corrosion, big hole

18/06/2011 09:17:26 WIB
Daniel Garcia-R @dgr4energy

Problem was authorities at the time tried to minimize it, said "nothing had happened"→ someone sent video to media→people show hole→scared

18/06/2011 09:18:44 WIB
Daniel Garcia-R @dgr4energy

For ref, similar Sodium Fast Reactor (SFR) prototypes like Phénix reactor (FR) have had ~1 Na leak/year for 30y of op. = "success" in FR

18/06/2011 09:19:48 WIB
Daniel Garcia-R @dgr4energy

In JP it has taken us 15 years to gain back people's confidence simply bc officials lied over a single minor problem with no rad involved

18/06/2011 09:21:08 WIB
Daniel Garcia-R @dgr4energy

& btw, Na reacts strongly with H2O (&moisture), but it's also what allows us to build react with passive cooling+no pressure= greater safety

18/06/2011 09:22:07 WIB
JasonBall_GoodPeople @good_people

@daniel_garcia_r Pltutonium, Uranium, flamible gas to cool it, toxic gas to keep that 'stable'... sounds like a bad idea for no rtn!

18/06/2011 08:29:03 WIB
Daniel Garcia-R @dgr4energy

Of course there is plutonium, key point of FBR (Fast Bread Reactor) is to recycle nuke waste + burn nat Ur (without enrich)

18/06/2011 09:22:59 WIB
Daniel Garcia-R @dgr4energy

Would you rather store the Pu produced by LWR (Light Water Reactors = regular PWR, BWR) in your backyard or burn it and get rid of it?

18/06/2011 09:23:48 WIB
Daniel Garcia-R @dgr4energy

Would you rather store spent fuel Ur produced over decades of LWR operation in your backyard or burn them to get rid of them?

18/06/2011 09:24:35 WIB
Daniel Garcia-R @dgr4energy

Would you rather try to find a way of storing highest rad waste (minor actinides) for x100,000 of years, or turn those into x100 years?

18/06/2011 09:25:07 WIB
Daniel Garcia-R @dgr4energy

Btw, Na is flammable, but not gas, it's a liquid metal, which is why we have no presure at all, much lower (~0) risk of pipe failure

18/06/2011 09:25:40 WIB
Daniel Garcia-R @dgr4energy

Btw, Argon is toxic, but used everywhere in science labs to keep innert atmospheres, it's pretty much stantandard industrial / r&d gas

18/06/2011 09:26:18 WIB
Daniel Garcia-R @dgr4energy

SFR (Sodium Fast Reactors) actually sound like a terrific idea for any nuclear nation (FR, JP, Rusia, India, China, Korea) but one: the US

18/06/2011 09:26:53 WIB
Daniel Garcia-R @dgr4energy

So yes, I'm pretty fed up with US propaganda; don't want SFR/FBRs? I'm fine, keep increasing garbage like you always do; let us be different

18/06/2011 09:27:43 WIB
Daniel Garcia-R @dgr4energy

Bottom line: Monju not "a nuke reactor", but a "PROTOTYPE nuke reactor": when we finally start it, more problms will come, that's the point

18/06/2011 09:28:55 WIB
Daniel Garcia-R @dgr4energy

At JAEA we don't "make reactors", we make R&D and one-of-a-kind facilities, no-one can predict exact schedules, troubles in advance

18/06/2011 09:29:55 WIB
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