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The parameters related to the plants in Fukushima Daiichi Nuclear Power Station

The newest data

[Reference] Measuring points of temperature (Figure) (Data updated on January 27, 2016)

A part of above data includes;
・data which indicate incorrect values due to measurement instrument failure
・data under continuous monitoring, though not judged as measurement instrument failure(reference data)
Please refer to the following for details about these measurement instruments.

[Reference] The latest statuses of measurement instruments according to the data obtained every hour and every 6 hours (CSV) (Data updated on January 27, 2016)

* Only Japanese for holidays and weekends

 

Archives

Change history etc.

January 27, 2016
Data sampling at Unit 2 SUPPLY AIR D/W COOLER HVH2-16C (TE-16-114H#1) and SUPPLY AIR D/W COOLER HVH2-16E (TE-16-114K#1) stopped because they were excluded from the reference thermometers.
Data sampling at Unit 2 SUPPLY AIR D/W COOLER HVH2-16C (TE-16-114H#2) and SUPPLY AIR D/W COOLER HVH2-16E (TE-16-114K#2) started because they were selected as the monitored thermometers.
Data sampling at Unit 3 PCV thermometer (TE-16-002) and PCV thermometer (TE-16-004) started because they were selected as the monitored thermometers.
For the above reasons, “The latest statuses of measurement instruments according to the data obtained every hour and every 6 hours (CSV)” and the “Measuring points of temperature (Figure)” were updated.
June 4, 2015
Unit 1 PCV temperature gauges (TE-1625T3,T1625T6) were selected as monitoring equipment.
Data sampling started on June 4, 2015.
Accordingly, "Temperature measurement point maps" have been updated.
April 23, 2015
Unit 2 RPV temperature (TE-2-3-69R) was selected as monitoring temperature.
Data sampling started on April 23, 2015.
Accordingly, "temperature measurement point (figures)" and "latest status of the indicators in hourly/every six hours data (CSV)" have been updated.
April 7, 2015
The measurement values of Unit 1 PCV temperature (TE-1625T3,TE-1625T6) were excluded from the monitoring thermometer; therefore, we have updated "temperature measurement points (figures)."
Unit 1 Primary containment vessel's pressure indicator PT-1601-69 has been replaced to monitoring subsidiary indicator. From April 7th, 2015, midnight, on a 6 hourly data (CSV) primary containment vessel's pressure indicator PT-1632C was changed to PT-1601-69 and has been started the data samplings. Therefore, we have been updated the "latest status of indicators."
March 4, 2015
Unit has been changed from MPa to kPa due to the change in pressure gauge at Unit 2 Reactor Pressure Vessel, after the trend of reading was evaluated to be inappropriate for monitoring.
July 17, 2014
The "Measuring points of temperature (Figure)" has been updated due to the restoration of the monitoring thermometer at the points inside Unit 2 PCV (TE-16-007,TE-16-008).
May 17, 2014
From 23:00 on May 16, 2014, obtaining data from the reactor pressure vessel pressure gauge (PT-1632C) has been started, instead of primary containment vessel pressure gauge (PT-1601-69) at Unit 1 for the every 6 hour data (CSV). The primary containment vessel pressure gauge (PT-1601-69) has been excluded from the monitoring backup equipment.
"The latest statuses of measurement instruments according to the data obtained every hour and every 6 hours" has been updated due to this change.
May 15, 2014
"Measuring points of temperature (Figure)" has been updated, since Unit 2 PCV temperature (TE-16-007,TE-16-008) is no longer a monitoring object specified by the Implementation Plan.
Apr 9, 2014
April 9.2014 "Measuring points of temperature (Figure)" and "the latest statuses of measurement instruments according to the data obtained every 6 hours (CSV)" were updated, since Unit 1 PCV temperature (TE-1625T3) has become a monitoring object specified by the Implementation Plan.
Apr 4, 2014
"Measuring points of temperature (Figure)" and "the latest statuses of measurement instruments according to the data obtained every 6 hours (CSV)" has updated, since Unit 1 PCV temperature (TE-1625T3) is no longer a monitoring object specified by the Implementation Plan.
Feb 20, 2014
The temperature of RPV of Unit 2 (TE-2-3-69R) excluded from instruments to be monitored under the operational safety regulation. 'The temperature measurement points (figure)' and 'the latest situation of the gauge in the data obtained every hour/six hours (CSV)' was updated accordingly.
Oct 2, 2013
Since a thermormeter was additionally installed inside the Unit 2 PCV, data recording of Unit 2 PCV temperature (TE-16-007 and TE-16-008) provided in "Data (Every 6 hour) CSV" was started at 5:00 AM on October 2, 2013. In addition, "Parameters related to temperature (Graph)" and "Measuring points of temperature (Figure)" was renewed.
We have corrected the name of the instrument (TE-2-3-69F1, TE-2-3-69F2 and TE-2-3-69F3) provided in "Data (Every 6 hour) CSV" and "Measuring points of temperature (Figure)" at Unit 2.
Since Unit 6 reactor was opened, data recording of Unit 6 reactor water level provided in "Data (Every hour) CSV" was started by using the "reactor water level open vessel" at 4:00 PM on September 20, 2013. In addition, "Stoppage range of reactor water level" has no longer been displayed (left as blank) since 4:00 PM on September 20, 2013.
Apr 9, 2013
After 5:00 AM on April 9, 2013, the data obtained by an alternative instrument RPV BELLOWS SEAL AREA(TE-16-114N#1) replacing Unit 2 RPV BELLOWS SEAL AREA (TE-16-114R#2) has been provided in the data obtained every 6 hours (CSV).
Mar 4, 2013
After 0:00 AM on March 4, 2013, the data of instruments judged to be "failed" included in the data obtained every hour/six hours (CSV) is no longer displayed (left as blank) as they are no longer used for evaluation and their reliability is low.
As for the data of Unit 2 SUPPORT SKIRT TOP (TE-2-3-69K1) included in the data obtained every six hours (CSV), the data of the alternative Unit 2 SUPPORT SKIRT TOP (TE-2-3-69K2) is provided instead after 5:00 AM on March 4, 2013.
The data of the PCV temperatures (TE-16-114W#1), (TE-16-114W#2)on March 4, 2013 are not displayed (left as blanks) in the data obtained every 6 hours (CSV) acquired at 11:00 AM on March 4 and later since the instruments were removed for the investigation of the inside of the PCV and permanent thermometer installation. The temperature measurement points (figure) have been updated accordingly.
Feb 18, 2013
As for the parameters related to Unit 1 water level, pressure and temperature obtained every hour (CSV), the data on reactor injection water flow rate (CS) as of 12:00 AM(Midnight) on January 23, 2012 has been corrected.
Jan 17, 2013
A document on the latest statuses of measurement instruments has been added (with the format of data obtained every hour and every 6 hours (CSV) changed).
Dec 4, 2012
The format of Unit 1 data obtained every 6 hours (csv) has been changed (click here for examples) and the temperature measurement points (figure) have been updated.
Nov 20, 2012
The data acquired at 1:35 and 12:25 on March 16, 2011 has been added to Unit 2 Parameters Related to Water Level and Pressure (CSV, graph)
Nov 14, 2012
The year in the "Parameters related to temperature" (CSV) for Units 1-3 in the 2011, 2012 archive has been corrected from 2012 to 2011.
Nov 8, 2012
Unit 3 spent fuel pool water temperature and FPC skimmer surge tank water level as of 11:00 on November 7 on the Parameters Related to Plants (overview chart) have been corrected to match the note.
Nov 6, 2012
Format being changed and measuring points of temperature (Figure)
Nov 5, 2012
According to the data additions and corrections made to the past parameters related to the plants, the water level, pressure, temperature data of March 2011 was updated and the amounts of water injection into Units 1-3 reactors and the complementary document on the fire fighting pump flowmeter reading data (posted on June 13, 2011) have been replaced.(Go here for details on the changes made)
Sep 8, 2012
Thermometers of safety regulations of Unit2 has been deleted since it was excluded from instruments to be monitored under the Safety Regulation.
Aug 14, 2012
Format being changed since the data of 11:00 am, August 14, 2012.
Jul 12, 2012
Format being changed since the data of 5:00 am, July 12, 2012.
May 28, 2012
Data was corrected as we found that the wiring for the digital recorder of Unit 1 safety valve thermometer was done incorrectly.
Mar 16, 2012
Format being changed since the data of 11:00 am, March 16, 2012. (For the data before 6:00 am on Mar.16, 2012)
Jan 19, 2012
Regarding the temperature data of Unit 1 as of 12:00 PM, January 18, the data table value on PDF page 3 was incorrect (we had uploaded the temperature data of Unit 2) from 3:00 PM, January 18 to 9:40 AM, January 19.
Nov 29, 2011
Incorrect data for pressure at Primary Containment Vessel of Unit 1 at Fukushima Daiichi Nuclear Power Station (Brief Overview)
Nov 11, 2011
Correction of pressure data of plant parameters in primary containment vessel D/W of Unit 2 in Fukushima Daiichi Nuclear Power Station
Jun 13, 2011
Correction of parameters related to the plants in Fukushima Daiichi Nuclear Power Station

[Press Release] Correction of parameters related to the plants in Fukushima Daiichi Nuclear Power Station[June 13, 2011]

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