Between the Poles: Fukushima Daiichi: Radiation readings near perimeter continue to decline

Geoff Zeiss

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OSGeo was created to support the collaborative development of open source geospatial software and promote its widespread use
Proven guidelines for reducing underground infrastructure damage at airports, university, industrial, and commercial campuses, and towns
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Sharing information about the location of underground utilities
The U.S. devotes an estimated $10 billion annually to locating underground infrastructure. Every construction project requiring excavation involves significant efforts in locating underground utilities prior to and during construction to reduce the risk of injuries and unexpected project delays. But this information is rarely shared and the location of underground infrastructure is recaptured over and over again. There are successful examples around the world where municipal and regional governments have helped enable a shared underground utility network database.
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Building information modeling (BIM) has been applied to design-build construction projects for many years. A growing number of countries are mandating BIM for public projects. While the UK government has said that "...we know that the largest prize for BIM lies in the operational stages of the project life-cycle", until recently there has not been hard data to support this conjecture. Similarly there has been only anecdotal support for an integrated BIM and geospatial approach for design, build, operate and maintain projects. Now we are beginning to see data from real world projects that offer evidence for the benefits of an integrated BIM+geospatial full lifecycle approach for construction projects.
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I thought it would be worth while to include here a talk I gave at GEOGRAPHY 2050 Powering Our Future Planet at Columbia University in New York about the importance of accurate location information about underground infrastructure for the future development of the energy grid. With some notable exceptions accurately recording the location of subsurface infrastructure including oil, gas, electric power and other energy infrastructure is ignored - perhaps this is a case of out-of-sight is indeed out-of-mind. The reality is that knowing the location of underground energy infrastructure is critical for national security, for disaster planning and management, for public safety and for economic efficiency. Everyone is aware of at least one disaster resulting from or exacerbated by not knowing where our energy infrastructure is - the explosions in San Bruno in California (2010) and Belgium (2004) immediately come to mind.
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BIM + geospatial interoperability would avoid another CAD + GIS quagmire
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Transmission line inspections for vegetation management and other purposes are essential in ensuring grid reliability and resilience. We saw the devastating effect of vegetation encroachment in the recent California fires, which in part have been blamed on failure to maintain properly cleared transmission lines. With drones that can cover great distances in a single flight and provide detailed and accurate aerial imagery of transmission lines and other infrastructure, it is now possible to almost completely automate this expensive process. Automating transmission line inspections for vegetation management using BVLOS drones not only saves money, but also could improve the resiliency and reliability of the transmission grid.

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April 03, 2011

Fukushima Daiichi: Radiation readings near perimeter continue to decline

JAIF has reported radiation readings at the Fukushima Daiichi plant at 09:00, Apr. 3rd (20:00 Saturday April 2 ET)

0.83 mSv/h (830 μSv/h) at the south side of the office building
127 μSv/h at the Main gate
59 μSv/h at the West gate

A nuclear power worker in Japan exposed to the level recorded at the west gate ( 59 μSv/h ) for a prolonged period would reach his/her maximum exposure for a year (100 mSv/yr) in about 70 days. A member of the public would reach his/her annual maximum exposure (1 mSv/yr ) in about 17 hrs of prolonged exposure.

Previous readings

21:00, Mar. 31st (08:00 am Thursday March 31 ET)

0.94 mSv/h (940 μSv/h) at the south side of the office builiding
148 μSv/h at the Main gate
70 μSv/h at the West gate

21:00, Mar. 30th (8:00 am Wednesday March 30 ET)

1.00 mSv/h (1000 μSv/h) at the south side of the office building
156 μSv/h at the main gate
72 μSv/h at the west gate

15:00, Mar. 30th (02:00 am Wednesday March 30 ET)

1.05mSv/h (1050 μSv/h) at the south side of the office building
163 μSv/h at the main gate
75 μSv/h at the west gate

09:00, Mar. 30th (20:00:00 Tuesday March 29 ET)

1.05 mSv/h (1050 μSv/h) at the south side of the office building
169 μSv/h at the Main gate
78 μSv/h at the West gate

Previous readings at the West Gate

120.0 μSv/h at 21:30, Mar. 28 (08:30 am Monday March 28 ET)
122.8 μSv/h at 15:30, Mar. 28 (02:30 am Monday March 28 ET)
132.5 μSv/h at the West gate at 16:00, Mar. 27 (03:00 am Sunday March 27 ET)

Posted at 11:25 AM in Electric Power, Environment, Fukushima Nuclear Incidents | Permalink

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Between the Poles

Geoff Zeiss

July 2023

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April 03, 2011

Fukushima Daiichi: Radiation readings near perimeter continue to decline

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