Temps well above 100°C persisting at Reactor 2 gauge — Tepco claims malfunction, but had been stable previously

Published: January 16th, 2012 at 1:14 pm ET


Title: Temperature Remains High at Reactor 2 Pressure Vessel at #Fukushima I Nuke Plant
Source: EX-SKF
Date: January 15, 2012

It went as high as 142 degrees Celsius on January 14 before it came down to 138 degrees Celsius on January 15 at “CRD Housing Upper Part” of the Reactor Pressure Vessel of Reactor 2 at Fukushima I Nuclear Power Plant. 

Looking at the numbers, erratic movement started on January 12 when the temperature at the location jumped from 48.4 degrees Celsius at 5PM to 102.3 degrees Celsius at 11PM. TEPCO says it’s just malfunctioning, but the temperature had been stable up to that point.

Read the report here

See the Tepco Press Release here

Published: January 16th, 2012 at 1:14 pm ET


Related Posts

  1. Professor: Damage to pressure vessel if melted fuel keeps heating up at Reactor No. 2? — Tepco blames faulty gauge, yet still fears rising temps February 13, 2012
  2. Gizmodo: “Just when you thought it was over” — Temps soar 26.7°C in last few hours at Reactor No. 2 — Tepco admits they don’t have a clue about what’s going on February 6, 2012
  3. 82°C at Reactor No. 2 — Keeps rising even after injection of more water — Tepco “set to dump in boric acid” February 12, 2012
  4. Bloomberg: Reactor No. 2 temperature breaches safety limit — Now almost double Feb. 1 level — Validity of safety declaration questioned — Nearly 200°F February 13, 2012
  5. Mainichi: Malfunction casts doubt on ‘cold shutdown’ and condition of reactor cores — Japan Nuclear Expert: Will be much more serious if last two sensors fail; Unable to install new ones February 14, 2012

10 comments to Temps well above 100°C persisting at Reactor 2 gauge — Tepco claims malfunction, but had been stable previously

  • TheMysticWizard1

    Remaining blobs of molten corium moving past this area?

    • pure water

      It looks like it is the case. If they follow the measurements and the places they were made, they can see the path of the molten fuel. But who needs this? – When modern technology can measure the temperature of a star, or find the underground fire in a mine, it is stupid to say you do not know where is the fuel! They are just telling to every one listening: “You are stupid”.

  • arclight arclight

    hmm they not fix that yet!??

    “Temperature Thermocouples

    14 Gauge

    1260 Deg C

    High Quality

    Thermocouple Length 250mm or 9 3/4 inches approximate

    Type K Thermocouple

    We Sell this item in kit form with assembly instructions included.

    Very Easy to Assemble

    Please ask for help if needed to determine which thermocouple will suit for your application

    All items Packed & Sent”


    you see !! another problem solved!!

  • Anthony Anthony

    Do you know how hot a hundred degrees C is?

    They should be tried for spreading dangerously misleading info about being in cold shutdown.

  • tomb1

    As an engineer I must agree that the sensor is probably broken (although I normally do not agree at all with what tepco sais).


    1) All other temps did not change, even the one of the RPV drain pipe and the one of the RPV bottom part, which are next to the temp in question here

    2) If you look at the temp table and calculate a bit, you can see that the temp is jumping from quite constantly decreasing 47,x to very different values between 58 and 142 quickly. This is not very plausible.

    3) The delta between 47,x and the new values is build from different combinations of binary values like 64, 32, 16, 8, 4. This is a strong indication for a broken digitalisation of the analogue values. Sensor (or better its adapter) is broken.

    Sorry, this time TEPCO is probably telling the truth.

    • john lh john lh

      Yes, it is the truth should not be told by any engineers or man with logical.

      No matter these meters works or broken, it is already meanings as an description of those broken reactors.

      Public may be do not know, they must know.

      Evil and Demons.

      I do not believe that they are not mad or has less common sense than any of us ,the enenewszers here.

      They know, they lie ,the hidden, they killing . That is the truth.

      • StillJill StillJill

        Yes john lh,…you have stared into it’s eyes,..and read it totally correct. Good for you,…most can not see this without flinching.

        As you so well put it, “They know, they lie ,the hidden, they killing . That is the truth.”

        Sadly, it IS THE TRUTH.

    • tomb1

      Temp now at -6.3 °C. It definetely is broken.