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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 1,273 - 1,279 (7page)
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초록· 키워드
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Production of iodine-131 by neutron activation of tellurium in tellurium dioxide (TeO2) material requires a target that meets the safety requirements. In a radiopharmaceutical production unit, a new lid for a can was designed, which permits tight sealing of the target by using tungsten inert gaswelding. The leakage rate of all prepared targets was assessed using a helium mass spectrometer. The accepted leakage rate is 10 4 mbr.L/s, according to the approved safety report related to iodine-131 production in the TRIGA Mark II research reactor (TRIGA: Training, Research, Isotopes, General Atomics). To confirm the resistance of the new design to the irradiation conditions in the TRIGA Mark II research reactor's central thimble, a study of heat effect on the sealed targets for 7 hours in an oven was conducted and the leakage rates were evaluated. The results showthat the tightness of the targets is ensured up to 600 C with the appearance of deformations on lids beyond 450 C. The study of heat transfer through the target wasconducted by adopting a one-dimensional proximation, under consideration of the three transfer modesdconvection, conduction, and radiation. The quantities of heat generated by gamma and neutron heating were calculated by a validated computational model for the neutronic simulation of the TRIGA Mark II research reactor using the Monte Carlo N-Particle transport code. Using the heat transfer equations according to the three modes of heat transfer, the thermal study of I-131 production by irradiation of the target in the central thimble showed that the temperatures of materials do not exceed the corresponding melting points. To validate this new design, several targets have been irradiated in the central thimble according to a preplanned irradiation program, going from4 hours of irradiation at a power level of 0.5MWup to 35 hours (7 h/d for 5 days a week) at 1.5MW. The results showthat the irradiated targets are tight because no iodine-131 was released in the atmosphere of the reactor building and in the reactor cooling water of the primary circuit.
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참고문헌 (9)
참고문헌 신청
International Atomic Energy Agency / 2003 / Manual for Reactor Produced Radioisotopes, IAEA-TECDOC-1340 / IAEA :86
M. Khalid / 2014 / Reuse of decayed tellurium dioxide target for production of iodine-131 / J. Radioanal. Nucl. Chem 299:591~694
Centre d’Etude de l’Energie Nucleaire / 1971 / groupe d'exploitation du reacteur BR2 et des installations connexes JMB/JMG/RH, BR2doigt de gant DG 36/01, Rapport de l'incident survenu le 23fevrier
M.S. Islam / 2004 / Operation experience with the 3 MW TRIGA Mark-II research reactor of Bangladesh / World TRIGA Users Conference
B. El Bakkari / 2012 / Safety Analysis Report of CENM 2 MW TRIGA Mark-II research reactor
M. Khalid / 2014 / Reuse of decayed tellurium dioxide target for production of iodine-131 / J. Radioanal. Nucl. Chem 299:591~694
Centre d’Etude de l’Energie Nucleaire / 1971 / groupe d'exploitation du reacteur BR2 et des installations connexes JMB/JMG/RH, BR2doigt de gant DG 36/01, Rapport de l'incident survenu le 23fevrier
M.S. Islam / 2004 / Operation experience with the 3 MW TRIGA Mark-II research reactor of Bangladesh / World TRIGA Users Conference
B. El Bakkari / 2012 / Safety Analysis Report of CENM 2 MW TRIGA Mark-II research reactor
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