Related Experiment Video
Updated: Jan 31, 2026

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides
Published on: May 20, 2019
Development of clearance verification equipment for uranium-bearing waste
Kaoru Yokoyama1, Yusuke Ohashi1
1Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency, 1550 Kamisaibara, Kagamino-cho, Tomata-gun, Okayama 708-0698, Japan.
Abstract:
Dismantled materials generated from nuclear facilities are reused or directed to repository sites. If scrap metals with complicated shapes can be cleared, the amounts of radioactive waste can be reduced. A clearance verification system is constructed to determine the amount of uranium in decontaminated metals in a drum using the 1.001 MeV gamma rays of 234mPa, produced in the decay of 238U. The experimental study with simulated waste drums demonstrated that the quantification errors of uranium fall within 25% for 0.5 g of uranium.
Related Concept Videos
Self-Evaluation: Self-Enhancement and Self-Verification
Strategies of Self-Presentation II: Self-Verification
Leveling Equipment
Collar Bearings
Bearing Stress
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
Azimuths and Bearings

