Sunday, April 10, 2011

Radiation Monitoring Part III

100 Sieverts/HR in Fukushima No. 1 after April 8 7.1M aftershock. 
Fukushima is still today, a month after the Tsunami hit Japan, a bleeding scab of radiation on the face of the Earth. Millions of gallons of radioactive water have already been released into the sea, Readings as high as 1000s of micro Sieverts/Hour are routinely being reported by Tepco, and  picocuries of  radiation are showing up in the air, water, and  milk of the world.  60,000 tons of radioactive water still needs to be dumped into the Ocean. Two Japanese journalists took a makeshift tour of the evacuated zone with their Geiger counters. This is twelve minutes long:

For April 3 - 9, I changed my Aware Electronics RM-80 to record data per second.  (30 or 60 second averages are much lower than the 100 plus micro-roentgen/Hr spikes I see while recording per second.) While cleaning my heating filters (Honeywell Electrostatic), I measured the pre and post filters.  Very high consistent readings for both, reaching 50 - 80 MicroRoentgens/HR as measured per second.  Data for 50 hours of testing done daily between April 3rd and April 9th is below. The geiger counter sits in my home office, where my Carrier Infinity 16 heating system pressurizes my office with outside air 24 hours per day:

April 6th looked like this:

I took 180 (TBU= 1 second) samples from milk, tap water, puddle water, wet ground soil. Those samples looked like this:

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