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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Niigataken Chuetsu-oki Earthquake and its Influences on the Kashiwazaki-Kariwa NPP
Niigataken Chuetsu-oki Earthquake and its Influences on the Kashiwazaki-Kariwa NPP
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Summary of the Earthquake andSituation of the Kashiwazaki-Kariwa NPP
• Summary of the Earthquake– Occurrence: July 16, 2007 at 10:13 am JST– Earthquake Source:
• 17km below the seabed off Jo-chuetsu area in Niigata prefecture (37°33.4′North 、 138°36.5′East ）
• Epicenter Distance: 16km from the NPP– Magnitude: 6.8
• Situation of the NPP– When the earthquake occurred:
• Unit 2 was in start-up• Unit 3, 4 and 7 were in normal operation• Unit 1, 5 and 6 were out of operation for the periodic inspections
– Units 2, 3, 4 and 7 were automatically shut down following the high seismic acceleration trip signals
Kashiwazaki-Kariwa NPP
Niigata city
Epicenter
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 Unit 2 Unit 3 Unit 4 Unit 7 Unit 6 Unit 5Unit
Maximum Acceleration
（gal）
Vertical
S-N
E-W
Ob
De408
235
680
274
273
311
Vertical
S-N
E-W
ObDe 311235
384
192
193308
Vertical
S-N
E-W
Ob
De 337
235
492
193
194
310
Vertical
S-N
E-W
Ob
De 355
235
356
263
263
267
Vertical
S-N
E-W
Ob
De
488
235
322
263
263271
Vertical
S-N
E-W
ObDe 282235
606
167
167304
Vertical
S-N
E-W
ObDe205235
442
249
254311
Unit 1 Unit 2 Unit 3 Unit 4 Unit 7 Unit 6 Unit 5Unit
Maximum Acceleration
（gal）
Vertical
S-N
E-W
Ob
De408
235
680
274
273
311
Vertical
S-N
E-W
ObDe 311235
384
192
193308
Vertical
S-N
E-W
Ob
De 337
235
492
193
194
310
Vertical
S-N
E-W
Ob
De 355
235
356
263
263
267
Vertical
S-N
E-W
Ob
De
488
235
322
263
263271
Vertical
S-N
E-W
ObDe 282235
606
167
167304
Vertical
S-N
E-W
ObDe205235
442
249
254311
Maximum Acceleration
（gal）
Vertical
S-N
E-W
Ob
De408
235
680
274
273
311
Vertical
S-N
E-W
Ob
De408
235
680
274
273
311
Vertical
S-N
E-W
Ob
De408
235
680
274
273
311
Vertical
S-N
E-W
ObDe 311235
384
192
193308
Vertical
S-N
E-W
ObDe 311235
384
192
193308
Vertical
S-N
E-W
ObDe 311235
384
192
193308
Vertical
S-N
E-W
Ob
De 337
235
492
193
194
310
Vertical
S-N
E-W
Ob
De 337
235
492
193
194
310
Vertical
S-N
E-W
Ob
De 337
235
492
193
194
310
Vertical
S-N
E-W
Ob
De 355
235
356
263
263
267
Vertical
S-N
E-W
Ob
De 355
235
356
263
263
267
Vertical
S-N
E-W
Ob
De 355
235
356
263
263
267
Vertical
S-N
E-W
Ob
De
488
235
322
263
263271
Vertical
S-N
E-W
Ob
De
488
235
322
263
263271
Vertical
S-N
E-W
Ob
De
488
235
322
263
263271
Vertical
S-N
E-W
Ob
De
488
235
322
263
263271
Vertical
S-N
E-W
ObDe 282235
606
167
167304
Vertical
S-N
E-W
ObDe 282235
606
167
167304
Vertical
S-N
E-W
ObDe 282235
606
167
167304
Vertical
S-N
E-W
ObDe205235
442
249
254311
Vertical
S-N
E-W
ObDe205235
442
249
254311
Vertical
S-N
E-W
ObDe205235
442
249
254311
Vertical
S-N
E-W
ObDe205235
442
249
254311
Rx. Coolant Temp.Unit 2under Stat up
Rx. Water Level19:40 <100℃
Unit 3100% Power
23:07 <100℃
Unit 4100% Power 7/17 6:54 <100℃
Unit 7100% Power
7/17 1:15 <100℃
Unit 1 Unit 5Unit 6Unit 2 Unit 3 Unit 4 Unit 7
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 RPV Inspection Schedule
August September October November December
Phase 1 Phase 2 Phase 3
Visual inspection using under water TV camera
8/21 8/23
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 : Phase 1 InspectionFlange
Guide Rod
Feed Water SpargerCore Shroud
Upper Grid
Core Spray PipeCore Spray Sparger
As a result of phase 1 inspection, the abnormality such as the damage / transformation / the falling off was not confirmed.
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 : Flange
Guide Rod
Flange
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 :Guide Rod
FW Sparger
Guide Rod
Core Spray Pipe
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 :Feed Water Sparger
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 :Core Spray Pipe
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 :Core Spray Sparger
Core Spray Sparger
Core Shroud(upper ring)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 :Upper Grid
LPRM
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 : RPV base bolts(A,As)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 : Leakage of water into B5 floor
Leakage of water into B5 floor ofthe reactor combination building (Unit 1)
Leakage of water into B5 floor ofthe reactor combination building (Unit 1)
Break of Fire Extinguishing Pipe (B,C)
B1 Floor
B2 Floor
B3 Floor
B4 Floor
B5 Floor
Sump
Duct
Reactor Combination Building
PeneWater Flow-in
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 1 : Oil Tank (B,C)
Land Subsidence
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 :Fire of House Transformer(1/3)
As for the duct, 16 - 18cm dropped
(B,C)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 :Fire of House Transformer(2/3)
Bedrock
House Transformer
Bus Duct1 – 3 cmdropped 20 – 25 cm
dropped
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 :Fire of House Transformer(3/3)
Unit 7 6 5 4 2 1
Unit 3 Main Transformer
Unit 3Main
Generator
House Transformer
Start-up Transformer
Emergency BusNormal Bus
Fire of House Trans. was not safety related problem
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 : DG(A,As)Upside
Downside
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 : HCU (A,As)( Hydraulic Control System (CRD))
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 : MSIV (A,As)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 : PLR Pump (A,As)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 : RHR Pump (A,As)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 : Blow-out Panel came off(B,C)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 3 : Displacement of the main exhaust duct
(B,C)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 6 : Leakage of water including radioactive materials
Leakage of water including radioactive materials into non-controlled area
in the reactor building
Leakage of water including radioactive materials into non-controlled area
in the reactor building
(B,C)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 6 : Leakage of water including radioactive materials
Leakage of water including radioactive materials into non-controlled area
in the reactor building
Leakage of water including radioactive materials into non-controlled area
in the reactor building
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
MotorMotor
Damaged
Unit 6 : Damage of the reactor building overhead crane
Damage found on the coupling of the drive axisof the reactor building overhead crane
Damage found on the coupling of the drive axisof the reactor building overhead crane
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Unit 7 : Detection of radioactive materials in the main exhaust duct
Detection of radioactive materials in the main exhaust duct resulting from loss of the steam seal inside the turbine
Detection of radioactive materials in the main exhaust duct resulting from loss of the steam seal inside the turbine
Main ExhaustDuct
MonitoringHouse
Main E
xhaust Duct
Filter
Filter
Reactor Building
TurbineBuilding
Reactor Turbine
Conden-ser
Rare Gas Hold-up Equipment
Turbine GlandSteam Exhauster
Building Ventilation
Still Workingafter Plant Shutdown
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Other (B,C)
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Incorporated Administrative AgencyIncorporated Administrative Agency Japan Nuclear Energy Safety Organization Japan Nuclear Energy Safety Organization
Solid waste storage warehouse
![The ABWR Project at Shimane-3, Japan · Concrete [m3]: U6: 200,000. ; U7: 167,000. • Owner’s Project Management Team in case of Kashiwazaki-Kariwa 6&7 (Source IAEA-TECDOC-1390.)](https://static.documents.pub/doc/80x56/604fef8edc0b566bb0411a4a/the-abwr-project-at-shimane-3-concrete-m3-u6-200000-u7-167000-a-owneras.jpg)
