Annotated Photos of Fukushima

, director, Nuclear Safety Project | April 1, 2011, 1:34 pm EDT
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A set of very high-resolution photographs of the Fukushima Dai-Ichi nuclear plant have been posted on the web by cryptome.org. I’ve annotated some of those pictures below to help people know what they are seeing in those photos.

Photo 1: (original photo: Air Photo Service Co. Ltd., Japan)

1A – Unit 1 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

1B – Unit 2 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

1C – Unit 3 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

1D – Unit 4 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

1E – Offgas building shared by all four units containing equipment to process air pulled from the condensers and reduce radioactivity discharged from the offgas stack during normal reactor operation

1F – Unit 1 reactor building with extensive damage caused by hydrogen explosion

1G – Unit 2 reactor building

1H – Unit 3 reactor building with extensive damage caused by hydrogen explosion

1I – Unit 4 reactor building with extensive damage caused by hydrogen explosion

1J – Offgas stack discharging treated flow from Units 1-4 during normal operation

1K – Unit 1 intake where sea water is pumped via underground pipes into the condenser within the Unit 1 turbine building (A) to cool the steam exiting the main turbine. The warmed sea water flows through underground pipe to a common concrete culvert to the discharge point (N).

1L – Unit 2 intake where sea water is pumped via underground pipes into the condenser within the Unit 1 turbine building (B) to cool the steam exiting the main turbine. The warmed sea water flows through underground pipe to a common concrete culvert to the discharge point (N).

1M – Unit 3 intake where sea water is pumped via underground pipes into the condenser within the Unit 1 turbine building (C) to cool the steam exiting the main turbine. The warmed sea water flows through underground pipe to a common concrete culvert to the discharge point (N).

1N – Common discharge point used by Units 1, 2, 3, and 4 to return warmed sea water to the Pacific Ocean

1O – Stack shared by the Unit 1 and Unit 2 reactor building exhaust system. Air from the reactor buildings is discharged from this stack during normal operations. During accident conditions, a system within the reactor building routes air through a charcoal filter system before sending it to the stack for discharge. The primary containment is vented through the reactor building charcoal filter system before flowing through the lines to the stack.

1P – Stack shared by the Unit 3 and Unit 4 reactor building exhaust system. Air from the reactor buildings is discharged from this stack during normal operations. During accident conditions, a system within the reactor building routes air through a charcoal filter system before sending it to the stack for discharge. The primary containment is vented through the reactor building charcoal filter system before flowing through the lines to the stack.
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Photo 2: (original photo: Air Photo Service Co. Ltd., Japan)

2A – Unit 1 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

2B – Unit 2 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

2C – Unit 3 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

2D – Unit 4 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

2E – Unit 1 reactor building with extensive damage caused by hydrogen explosion

2F – Unit 2 reactor building showing blow-out panel opened to relief hydrogen and vapor buildups

2G – Unit 3 reactor building with extensive damage caused by hydrogen explosion

2H – Unit 4 reactor building with extensive damage caused by hydrogen explosion

2I – Stack shared by the Unit 1 and Unit 2 reactor building exhaust system. Air from the reactor buildings is discharged from this stack during normal operations. During accident conditions, a system within the reactor building routes air through a charcoal filter system before sending it to the stack for discharge. The primary containment is vented through the reactor building charcoal filter system before flowing through the lines to the stack.

2J – Stack shared by the Unit 3 and Unit 4 reactor building exhaust system. Air from the reactor buildings is discharged from this stack during normal operations. During accident conditions, a system within the reactor building routes air through a charcoal filter system before sending it to the stack for discharge. The primary containment is vented through the reactor building charcoal filter system before flowing through the lines to the stack.
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Photo 3: (original photo: Air Photo Service Co. Ltd., Japan)

3A – Unit 1 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

3B – Unit 2 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

3C – Unit 3 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

3D – Unit 1 reactor building with extensive damage caused by hydrogen explosion

3E – Unit 2 reactor building

3F – Unit 3 reactor building with extensive damage caused by hydrogen explosion

3G – Stack shared by the Unit 1 and Unit 2 reactor building exhaust system. Air from the reactor buildings is discharged from this stack during normal operations. During accident conditions, a system within the reactor building routes air through a charcoal filter system before sending it to the stack for discharge. The primary containment is vented through the reactor building charcoal filter system before flowing through the lines to the stack.

3H – Unit 1 reactor building (D) exhaust line to the stack (G)

3I – Unit 2 reactor building (E) exhaust line to the stack (G)

3J – Unit 1 truck bay used to deliver canisters of new fuel assemblies into the reactor building (D) and its refueling floor

3K – Unit 2 truck bay used to deliver canisters of new fuel assemblies into the reactor building (D) and its refueling floor

3L – Unit 3 truck bay used to deliver canisters of new fuel assemblies into the reactor building (D) and its refueling floor

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Photo 4: (original photo: Air Photo Service Co. Ltd., Japan)

4A – Unit 2 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

4B – Unit 3 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

4C – Unit 4 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps

4D – Unit 3 reactor building with extensive damage caused by hydrogen explosion

4E – Unit 4 reactor building with extensive damage caused by hydrogen explosion

4F – Unit 3 reactor building (D) exhaust line to the stack (H) showing extensive damage

4G – Unit 4 reactor building (E) exhaust line to the stack (H)

4H – Stack shared by the Unit 3 and Unit 4 reactor building exhaust system. Air from the reactor buildings is discharged from this stack during normal operations. During accident conditions, a system within the reactor building routes air through a charcoal filter system before sending it to the stack for discharge. The primary containment is vented through the reactor building charcoal filter system before flowing through the lines to the stack.

4I – Offgas building shared by all four units containing equipment to process air pulled from the condensers and reduce radioactivity discharged from the offgas stack during normal reactor operation

4J – Offgas stack discharging treated flow from Units 1-4 during normal operation

Additional annotated photos are posted here.

Posted in: Japan, Nuclear Power Safety Tags: , ,

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