Status of main inspection / restoration work at the Kashiwazaki Kariwa Nuclear Power Station following the Niigataken Chuetsu-oki Earthquake in 2007
(4-week schedule as of February 7, 2008): Inspection Completed, Red text: Changes from last week, Blue text: Information added this time
Unit

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

Unit 6

Ceiling crane in the reactor
building

Completed on 9/18

Completed on 10/4

Completed on 9/14

Completed on 11/9

Completed on 9/28

Completed on 10/2

Completed on 9/6

Refueling machine

Completed on 11/15

Completed on 10/16

Completed on 12/18Completed on 12/10

Completed on 10/19

Completed on 11/12

Completed on 9/27

Phase 1/2 completed on 1/16

Phase 1/2 completed on 12/6

-Withdrawal of two control rodsthat experienced separation
completed on 11/27-Disassemble inspection ofcontrolrodmechanism
commenced on 12/1
-Phase 1/2 completed on
12/27-Disassemble inspection
ofcontrolrodmechanismcompleted on 11/19-Phase 1/2 completed on 11/30

Completed on 2/５

Completed on 12/27

Completed on 1/28

Completed on 12/26

Inspection scheduled for 2/14the beginning of March

Inspection scheduled for 2/1mid MarchInspection
scheduledfor
11/17-20 12/4-5 ＆ 1/23- 2/19

-Inspection
on Supporting
Structure completed on 11/2
-Inspection of nozzle etc.
completed on 1/16

-Inspection
onSupporting
Structure completed on 10/30-Inspection of nozzle etc.
completed on 12/18-Inspection
onSupporting
Structure completed on 10/29-Inspection of nozzle etc.
completed on 12/14

Inspection
2/7-3/8

Inspection scheduled for 2/7-25

Facility / work

Phase 1

Internals（＊）

Completed on 8/23

Phase 2Completed on 10/1

Phase 3Completed on 12/14

Phase 1/2 completed on 11/19-Phase 1/2 completed on 2/5

Completed on 12/25

Inspection
2/6-20scheduledfor-Visualinspection
detachmentof
implemented on 1/18-Detachment
timingcoordinatedJet Pump
Open
inspection on
reactors
Fuel/Control Rod

Reactor Pressure Vessel

Suppression Chamber-Inspection on Control-Rod
Rack completed on 2/5-Inspection commencement on
Control-Rod scheduled for
2/15-22-Fuel Inspection timing being
coordinated-Inspection
onSupporting
Structure completed on 11/7
-Inspection of nozzle etc.
scheduled for 1/10-2/13
Inspection
1/28-2/23

scheduled

Inspection
scheduledfor11/27-30 & 12/25-2/8 ＆ midMarch-Inspection
onSupporting
Structure completed on 11/14-Inspection of nozzle etc.
completed on 12/26-Inspection
onSupporting
Structure completed on 11/12-Inspection of nozzle etc.
scheduled for 2/6-22-Inspection
onSupporting
Structure completed on 11/12-Inspection of nozzle etc.
scheduled for 12/8-18 & 1/28－
2/14

Unit 7

before
No1
being

for

scheduledfor-Inspection&provisional
restoration completed on 11/15-Restoration of lining scheduledfor 1/18-2/26

Reactor Well
Ceiling crane in the turbine
buildingOpen
inspection
on turbines

TurbineMain exhaust ducts

Transformer

In-housetransformer

Completed on 8/24

InsideinspectionofLow-Pressure
BCasingcompleted on 11/30

InsideinspectionofHigh-Pressure & Low-Pressure
A Casing completed on 12/21

Completed on 9/14

-Inspection of outdoor sections
completed on 9/14
-Exterior inspection on ducts inthe trenches completed on 10/5

-Inspectioncommencement
scheduled on 2/15

Main Generator

Maintransformer

Completed on 10/26

Exterior
inspection
Oilextraction /innerinspection
Exterior
inspection
Oilextraction /innerinspection

Completed on 11/1
-Inspection completed on 11/23-Ex-factorytimingbeing
coordinated-1A：Completed on ９/4-1B：Completed on 10/12-Ex-factorytimingbeing
coordinatedCompleted on 10/30

Completed on 10/5

Completed on 10/17

InsideinspectionofHigh-Pressure & Low-Pressure
A Casing completed on 12/14

InsideinspectionofHigh-Pressure & Low-Pressure
A Casing completed on 12/14

Completed on 9/14

-Inspection of outdoor sections
completed on 9/14
-Exterior inspection on ducts inthe trenches completed on 10/5

-Inspectioncommencement
scheduled on 2/18

-Inspection commenced on1/15-Withdrawal of the rotorscheduled on 2/14

-Inspection of outdoor sections
completed on 9/14
-Exterior inspection on ducts inthe trenches completed on10/5-Inspection commenced on11/3-Ex-factoryoftherotorcompleted on 12/1

-Inspection completed on 12/13-Ex-factorytimingbeing
coordinated-Inspection
11/29-Ex-factory
coordinated

4A,4B:
Inspectioncommencementtiming being coordinated-5A:Innerinspectioncommencement scheduled on2/25-26-5B:Innerinspectioncommencement scheduled on
3/10-Ex-factory
preparation
completed on 12/28-Ex-factorytimingbeing -Inspection completed on 10/26-Ex-factorytimingbeing
coordinatedcoordinated-2A:Completed on 11/8
-2B:Completed on 11/17

3A：Completed on 9/4-2A:Completed on 11/13-2B:Completed on 11/19-Ex-factorytimingbeing
coordinated-3A:Completed on 10/22
Ex-factory
preparationcommencement scheduledon 2/20-3B:Ex-factory completed on9/20

Insideinspectionof
High-Pressure & Low-Pressure
A Casing completed on 12/14

completedon

timingbeing

Completed on 10/4

Completed on 10/4

InsideinspectionofHigh-Pressure & Low-Pressure
A Casing completed on 10/25-Insideinspectionof
High-Pressure & Low-Pressure
A Casing completed on 11/30-Detailedinspectionof
High-Pressure & Low-Pressure
A-C commenced on 12/1

-Inspection commenced on
11/2-Withdrawal of the rotor
completed on 11/20-Completed on 10/6
-Ex-factory completed on 10/31-Completed on 9/21
-Ex-factory completed on 10/25-6A:Completed on 9/25
-6B:Completed on 9/26
-Ex-factory completed on 10/25-Carrying
preparation
scheduled for 2/25-27-7A:Completed on 11/14-7B:Completed on 11/10-Ex-factory completed 12/6

Exterior
Completed on 11/17
Completed on 10/19
inspection
Excitation
Inspectioncommencement InspectioncommencementOiltransformer
Completed on 10/18-Completed on 12/6
-Completed on 11/3
timing being coordinatedtiming being coordinatedextraction / -Ex-factorytimingbeing -Ex-factorytimingbeing -Ex-factorytimingbeing
innercoordinatedcoordinatedcoordinatedinspection（＊）Phase 1 (Inspection of the upper reactor):
The internals of a reactor are visually checked from above with an underwater camera, before the implementation of further inspection on the area extending from the reactor pressure vessel flange to the upper grid plate, with the aimof checking the internal status of the reactor.
Phase 2 (Inspection of the mid reactor --- the reactor core):
An underwater camera is used to visually check the area extending from the upper grid plate to the core support plate, as well as the outer circumference of the core shroud (annulus). The dryer and separator,

Phase 3 (Inspection of the bottom of the reactor):

removed from the core, are also examined.
Inspection is carried out on the area extending from the core support plate to the bottom of the reactor, after removing control rods, fuel supports and other items that could interfere with the inspection.