Preventative Maintenance of Drainpipes in Radioisotope Facility Using Flexible Hose
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概要
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A flexible hose made of plasticized polyvinyl chloride was introduced into underground radioactive wastewater drainpipes as preventative maintenance. We completed a seamless connection spanning the longest interval between the last confluence point and the wastewater tank. Although the flexible hose is not a construction material but rather a consumable article, it is robust against the effects of temperature change and erosion by chemical substances. Moreover, it is placed in an underground steel pipe where it is protected from UV irradiation and friction. Therefore, increased hose durability is expected. In addition, the risk of damage from earthquakes or ground subsidence is negligible due to the flexibility of the hose. Compared with a full renovation of the plumbing, the economic cost is much cheaper and the construction period is much shorter. We propose the use of flexible hoses as one of the most convenient methods to prevent leakage accidents at radioisotope facilities with underground plumbing for wastewater.
著者
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Matsui Hiroaki
Institute of Radioisotope Research, St. Marianna University Graduate School of Medicine
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Kuwabara Rie
Institute of Radioisotope Research, St. Marianna University Graduate School of Medicine
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Hiroi Tomoko
Institute of Radioisotope Research, St. Marianna University Graduate School of Medicine
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Tatsunami Shinobu
Institute of Radioisotope Research, St. Marianna University Graduate School of Medicine
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Yamamoto Takio
Rad Safe Technical Service Company
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Kouyama Hiroshi
Institute of Radioisotope Research, St. Marianna University Graduate School of Medicine
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- Preventative Maintenance of Drainpipes in Radioisotope Facility Using Flexible Hose