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RISS 인기검색어
- 검색키워드
- 저자 : Hashemi-Nezhad, Seyed Reza (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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ANALYSIS OF ADHESIVE TAPE ACTIVATION DURING REACTOR FLUX MEASUREMENTS
LINDSEY JORKAN BIGNELL,MICHAEL LESLIE SMITH,KIMITRI ALEXIEV,SEYED REZA HASHEMI-NEZHAD 한국원자력학회 2008 Nuclear Engineering and Technology Vol.40 No.1
Several adhesive tapes have been studied in terms of their suitability for securing gold wires into positions for neutron flux measurements in the reactor core and irradiation facilities surrounding the core of the Open Pool Australian Light water (OPAL) reactor. Gamma ray spectrometry has been performed on each irradiated tape in order to identify and quantify activated components. Numerous metallic impurities have been identified in all tapes. Calculations relating to both the effective neutron shielding properties of the tapes and the error in measurement of the 198Au activity caused by superfluous activity due to residual tape have been made. The most important identified effects were the prolonged cooling times required before safe enough levels of radioactivity to allow handling were reached, and extra activity caused by residual tape when measured with an ionisation chamber. Knowledge of the most suitable tape can allow a minimal contribution due to these effects, and the use of gamma spectrometry in preference to ionisation chamber measurements of the flux wires is shown to make all systematic errors due to the tape completely negligible.
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ANALYSIS OF ADHESIVE TAPE ACTIVATION DURING REACTOR FLUX MEASUREMENTS
Bignell, Lindsey Jordan,Smith, Michael Leslie,Alexiev, Dimitri,Hashemi-Nezhad, Seyed Reza Korean Nuclear Society 2008 Nuclear Engineering and Technology Vol.40 No.1
Several adhesive tapes have been studied in terms of their suitability for securing gold wires into positions for neutron flux measurements in the reactor core and irradiation facilities surrounding the core of the Open Pool Australian Light water (OPAL) reactor. Gamma ray spectrometry has been performed on each irradiated tape in order to identify and quantify activated components. Numerous metallic impurities have been identified in all tapes. Calculations relating to both the effective neutron shielding properties of the tapes and the error in measurement of the $^{198}Au$ activity caused by superfluous activity due to residual tape have been made. The most important identified effects were the prolonged cooling times required before safe enough levels of radioactivity to allow handling were reached, and extra activity caused by residual tape when measured with an ionisation chamber. Knowledge of the most suitable tape can allow a minimal contribution due to these effects, and the use of gamma spectrometry in preference to ionisation chamber measurements of the flux wires is shown to make all systematic errors due to the tape completely negligible.
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