・Confirmation of the situation of the radioactive solid waste keeping and the storage building.
２．Object of the survey
・Storage No. 5 – No. 8 which keep solid wastes (drums).
３．Content of the survey
・Visual confirmation of the insides of each storage.
・Measurement of dosage rate around and insides of each storage. Measurement of radioactive materials density in air inside the storages
The dose rate inside the solid waste storage was about 0.3～30μSv/h. It was equal to or lower than the rate around the storage.
Radioactive materials cannot fly from the open drums since the contents of the drums are pieces of concrete contained in plastic bags and non-free-floating radioactive materials such as metallic pipes and steel stock etc. As a result of an analysis of radioactive materials in air, it was below measurable limit except a slight amount of Cs-137 was detected on the 1stfloor of the storage No. 6 （9.5×10-６Bq/cm３）.This Cs-137 appears to be due to extraneous effect.
The proportion of the drums lying on their side was low (approx. 0.7%). It was confirmed that there were 32 drums opened by turnover in total.
No significant damage of the buildings was not confirmed as a result of the visual inspection.
- TEPCO : Press Release | Nuclide Analysis Results of Radioactive Materials in the Air at the Site of Fukushima Daiichi Nuclear Power Station (130th release) (enformable.com)
- Japan Ministry of Environment releases removal of radioactive materials instructions (enformable.com)
- 15,000 TBq Radioactive release into sea from Fukushima Daiichi in first 2 months – Triples Previous Estimates from April and May (enformable.com)
- November 17th, 2011 – TEPCO’s Roadmap to Restoration at Fukushima Daiichi (enformable.com)
- Japan Government unwilling to construct temporary facility to accept radioactive soil in Fukushima Prefecture until 2015 (enformable.com)
- Cesium found in Japanese Powdered Milk (enformable.com)
- Completion of Cover Construction at Reactor Building of Unit 1 of Fukushima Daiichi Nuclear Power Station (enformable.com)
- High cesium levels detected over 250 km from Fukushima Daiichi – Up to 600,000 Bq per square meter or higher in 60 Km radius (enformable.com)
- TEPCO : Press Release | Nuclide Analysis Results of Radioactive Materials in the Air at the Site of Fukushima Daiichi Nuclear Power Station (123rd release) (enformable.com)