Attachment
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 October 4, 2007): Inspection Completed, Red text: Changes from last week, Blue text: Information added this time
Unit
Facility / work

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

Unit 6

Unit 7- Cause of damage being
investigatedCompleted on 9/6- Completed on 10/2
Inspection scheduled to Inspection scheduled for Inspection scheduled to Inspection commencement Inspection scheduled for Inspection scheduled for
Refueling machinecommence in the end of 8/27～10/16
Completed on 9/27
commence in mid November scheduled for 10/22
9/20-10/19
9/27-11/3
October
Open-Reactor opening scheduledinspection
Reactor opening scheduled
Reactor opening scheduled
for 10/2-8
Phase1
Completedon
8/23
on reactors
from 10/19
from 10/20-Inspection Commencement
scheduled for 10/22
Internals（＊）
Phase 2Completed on 10/1
Inspection
preparation
Phase 3scheduled to commence on
10/2
Ceiling crane in theInspection scheduled for Completed on 8/24
Inspection scheduled for Inspection scheduled for 9/3 Inspection scheduled for Inspection scheduled for Inspection scheduled forturbine building
8/20～10/26
8/27～10/31～10/5
8/28～10/17
8/27～10/4
8/27～10/4
Openingandinside Opening
andinside Opening
Openingand
insideOpening
andinsideandinsideandinside Opening
andinsideinspection scheduled for inspection scheduled for inspection scheduledscheduled for inspection scheduled for Opening
Turbinefor mid inspection
scheduled for inspection scheduled forearly November – early early December – the end of November – early December
early November – the end of 10/22 – the end of inspection
10/11 – the end of October
10/8 – the end of November
December
DecemberNovember
DecemberCompletedoutdoorCompletedoutdoor Completed
outdoor
sections on 9/14
sections on 9/14
sections on 9/14
Main exhaust ducts
Completed on 9/14
- Exterior inspection on Completed on 9/14
- Exterior inspection on - Exterior inspection on――
ducts in the trenches
dusts in the trenches
dusts in the trenches
scheduled for 10/4-6
scheduled for 10/4-6
scheduled for 10/4-6
Inspection commencement
Inspection commencement
Main Generatorscheduled in the end ofscheduled for 10/9
October
Exterior
inspection Completed on 8/29
MainEx-factory
preparation Inspection commencement Inspection commencement
Oil- Inspection scheduled for - Completed on 9/21
preparation scheduled for 10/29
transformer extraction / Inspection
scheduled for 10/3
timing being coordinated
10/4-6scheduledtocommenceon
Ex-factory scheduled forinner- Ex-factory preparation -10/24
10/22
inspection
scheduled for 10/7
-2A:Inspection scheduled for
10/22-23
Exterior-2A:Preparation
3A：completed on 9/4
inspection
7A,
7B:
Preparationcommencement
scheduled
In-house
Inspection commencement
Transformer transformer
for 10/22
commencement scheduled
timing being coordinatedfor 10/22
Oil- 3A: Inspection scheduled- 6A：Completed on 9/25
on 9/4
2A:Preparation
extraction / -- 1A：Completedfor
10/18-23
6B：Completedon
9/26
1B：Inspection scheduled commencement scheduled - 3B:Completed Ex-factoryinner- Ex-factory scheduled forfor 10/24
inspection for 10/9～10/12
on 9/20
10/24
Exterior
Preparation commencement inspection scheduled forinspection
scheduled for 10/29
10/18-19
Excitation
Inspection commencement
Oiltransformer
extraction / Preparation scheduled forInspection commencement timing being coordinated
10/15～10/18
scheduled for 10/27
innerinspection
Draining and cleanup ofProcessing of water leakage on thepassageways and floor
B5F level of the reactor combination――――――
areas underway in midbuilding
October（＊）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 aim of 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 coreshroud (annulus). The dryer and separator, removed from the core, are also examined.
Phase 3 (Inspection of the bottom of the reactor):
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.
Ceiling crane in thereactor building

Completed on 9/18

Inspection scheduled
8/27～10/4

for Completed on 9/14

Inspection commencement Completed on 9/28scheduled for 10/6

Openinspectio
n on
turbines