7 Annotated Photos of Fukushima

http://allthingsnuclear.org/post/4261422055/annotated-photos-of-fukushima (2 of 12)4/3/2011 20:22:20All Things Nuclear • Annotated Photos of Fukushima

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April 1, 2011

Annotated Photos of Fukushima| by Dave Lochbaum | nuclear power | nuclear power safety | Japan nuclear |

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.

Special Instructions, MARCH 24, 2011

AERIAL PHOTO TAKEN BY SMALL UNMANNED DRONE AND RELEASED BY AIR PHOTO SERVICE, MANDATORY CREDIT AP provides access to this publicly distributed HANDOUT photo to be used only to illustrate news reporting or commentary on the facts or events depicted in this image. Date Created = 2011/03/24 Time Created = 11:29:37+00:00

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, 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.




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


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.




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 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




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 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




5C – Unit 2 offgas line that transports air pulled from the condenser inside the Unit 2 turbine building during normal operation to the offgas building for treatment to reduce radioactivity levels before discharge to the atmosphere

5D – Unit 3 offgas line that transports air pulled from the condenser inside the Unit 2 turbine building during normal operation to the offgas building for treatment to reduce radioactivity levels before discharge to the atmosphere

5E – Unit 3 reactor building (H) exhaust line to the stack (G) showing extensive damage

5F - Unit 4 reactor building (I) exhaust line to the stack (G)

5G - 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.


5I - Unit 4 reactor building with extensive damage caused by hydrogen explosion




6C - Unit 3 reactor building with extensive damage caused by hydrogen explosion

6D - Unit 4 reactor building with extensive damage caused by hydrogen explosion

6E – Unit 3 main transformer showing three parallel bus ducts connecting the main transformer to the Unit 3 turbine building (A) housing the main generator

6F – Unit 4 main transformer showing three parallel bus ducts connecting the main transformer to the Unit 3 turbine building (B) housing the main generator

6G – Unit 3 reactor building (C) exhaust line to the stack (I) showing extensive damage

6H - Unit 4 reactor building (D) exhaust line to the stack (I)

6I - 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.

6J – Unit 3 truck bay used to deliver canisters of new fuel assemblies into the reactor building (D) and its refueling floor

6K – Unit 4 truck bay used to deliver canisters of new fuel assemblies into the reactor building (D) and its refueling floor

6L – Unit 3 access hatch connecting the truck bay elevation with the refueling floor elevation inside the Unit 3 reactor building (C)

6M – Unit 4 drywell head (yellow). Unit 4 was in a refueling shutdown at the time with the drywell head and reactor vessel head removed to allow access to the reactor core.

7A – Unit 3 turbine building containing the main turbine, main generator, condenser, condensate pumps, and condensate booster pumps. Roof damage possibly caused by debris from the Unit 3 reactor building (B) explosion

7B - Unit 3 reactor building with extensive damage caused by hydrogen explosion

7C – Unit 2 offgas line that transports air pulled from the condenser inside the Unit 2 turbine building during normal operation to the offgas building for treatment to reduce radioactivity levels before discharge to the atmosphere

7D – Unit 3 offgas line that transports air pulled from the condenser inside the Unit 2 turbine building during normal operation to the offgas building for treatment to reduce radioactivity levels before discharge to the atmosphere

7E – Unit 3 reactor building (B) exhaust line to the stack showing extensive damage

7F – Unit 3 truck bay used to deliver canisters of new fuel assemblies into the reactor building (B) and its refueling floor

7G – Unit 3 access hatch connecting the truck bay elevation with the refueling floor elevation inside the Unit 3 reactor building (B)

7 Annotated Photos of Fukushima

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