Between the Poles: Fukushima Daiichi: Off-site power restored, but reactors and spent fuel pools still not stable

Geoff Zeiss

About the Author

September 2024

Sun	Mon	Tue	Wed	Thu	Fri	Sat
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

Links

Lidar News
Gene Roe's laser scanning industry news
Open Source Geospatial Foundation OSGEO
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
There are proven measures that an administration, owner, or municipal government responsible for an airport, university, industrial or commercial campus, or town can undertake to reduce the risk of underground utility damage, the associated disruptions to operations and business and the danger for workers and the public.
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.
Growing evidence of the benefits of an integrated BIM+geospatial full lifecycle approach to construction
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.
Progress in geospatial, civil, and BIM interoperability promises efficient workflows for infrastructure
The BIM and geospatial interoperability challenge is the latest symptom of the broader problem of integrating AEC and geospatial workflows, that has contributed to low productivity in the construction sector. After the announcement about a year ago by Jack Dangermond and Andrew Anagnost of a new relationship to build a bridge between Autodesk and ESRI technologies, I thought it a good time to review progress toward interoperability between the AEC and geospatial worlds.
Geography2050: Accurate location information about underground infrastructure is essential for powering our future planet
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.
Deep learning enables automated extraction of building footprints and road networks from satellite imagery
Automated feature extraction from satellite imagery has made major progress in the last year. Accurate building footprints extracted from high resolution satellite imagery are becoming available from companies such as Ecopia, which has just announced a partnership with DigitalGlobe, whose satellites are capable of 30 cm (approximately one foot) resolution. Also NVIDIA has demonstrated the ability to automate detection of many road networks using sophisticated algorithms and multi-spectral high resolution imagery.
BIM + geospatial interoperability would avoid another CAD + GIS quagmire
A specific challenge currently facing the AEC and geospatial industries is integrating building information models (BIM) and geospatial infrastructure and building models. There are parallels between what happened in the 1990s in unsuccessfully addressing CAD+GIS interoperability and the current challenge of BIM+geospatial interoperability. But there are also important differences which provide grounds for optimism that the availability of both BIM and geospatial standards, a vibrant open source geospatial community, and a new willingness on the part of major software players in the BIM and geospatial industries will make it possible to successfully address the latest interoperability challenge facing the AEC (architecture, engineering and construction) and geospatial industries.
BVLOS drones improve power line inspections amid increasing fire and storm risks for utilities | Utility Dive
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.

« Fukushima Daiichi: Off-site power restored to Unit 3 control room | Main | Autodesk Announces 2012 Products for Infrastructure »

March 22, 2011

Fukushima Daiichi: Off-site power restored, but reactors and spent fuel pools still not stable

The Wall Street Journal is publishing online graphics showing the current status of all six reactors at Fukushima Daiichi.

Units 1-4 are now connected to off-site power. TEPCO is checking whether pumps, temperature and water level monitoring systems and other equipment at each reactor, are operable. Lights are on in the control room of Unit 3 and lights in the control room of Unit 4 are expected to be on soon.

Unit 2

Steam was observed issuing from Unit 2, but by evening it was barely visible.

Unit 3

Gray smoke continued to rise from Unit 3, but a concommittant increase in radioactivity was not observed. TEPCO reported that the smoke seemed to be lessening as of Tuesday evening.

The Tokyo Fire Dept poured about 180 tons of water on Unit 3, attempting to cool the spent fuel pool.

Unit 4

150 tons of water was poured from a truck on the Unit 4 spent fuel pool.

Radiation reading at main gate

472.2 μSv/h 7:30 pm Mar 22

235.9 μSv/h shortly thereafter

It is surmised that the spike at 7:30 pm may have been the result of a sudden change in wind direction.

Previous readings at the plant perimeter

Radiation levels measured at the West Gate ( 1.1 kilometers west of Unit 3 )

269.5 μSv/h at 05:40, Mar. 20 (04:40 p.m. Saturday March 19 ET)

364.5 μSv/hr at 9:00 AM Mar 19 (20:00:00 Friday March 18 ET)

830.8 μSv/hr at 8:10 AM Mar 19 (19:10:00 Friday March 18 ET)

271 μSv/hr at 7:30 AM Mar 18 (06:30 p.m. Thursday March 17 ET)

289 μSv/hr at 11pm Mar 17 (10:00:00 a.m. Thursday March 17 ET)

292 μSv/hr at 8:40pm Mar 17 (07:40:00 a.m. Thursday March 17 ET)

646.2μSv/h at 11:10am Mar. 17 (10:10 p.m. Wednesday March 16 ET)

1472μSv/h at 16:20, Mar 16 (03:20 am Wednesday March 16 ET)

Radiation reading at the plant east gate

304 μSv/h at 03:30, Mar. 19 (02:30:00 p.m. Friday March 18 ET)

287 μSv/h at 12:00, Mar. 18 (23:00:00 Thursday March 17 ET)

Situation remains unstable

The early-evening spike in radiation levels, as well as the smoke and steam of uncertain origin, indicate that the situation at the plant is not yet stable.

Posted at 05:09 PM in Electric Power, Environment, Fukushima Nuclear Incidents | Permalink

Comments

What did they have to do to restore off-site power? There are about 4 lines coming into the plant. One 500 kv pair to 5&6. One 375 kv pair to 1&2. A second 375 kv pair to 3&4, and a smallish line into some building about 1000 feet up the first base foul line (follow the clear cut).

Posted by: Martin Gugino | April 30, 2011 at 04:10 AM

The comments to this entry are closed.

Between the Poles

Geoff Zeiss

September 2024

Links

March 22, 2011

Fukushima Daiichi: Off-site power restored, but reactors and spent fuel pools still not stable

Comments

RSS Feed

Search

Categories

Recent Posts

Archives