Annulus flooding detection system in flexible pipes using gamma rays transmission technique
Appl Radiat Isot. 2022 Mar 4;184:110177. doi: 10.1016/j.apradiso.2022.110177. Online ahead of print.ABSTRACTFlexible pipes are modular constructions made up of several layers. They are broadly employed in oil & gas industry, playing an important role in the Brazilian Pre-Salt production. Under specific conditions, seawater can ingress and this contact with metallic middle layers can significantly lead to a service life reduction of these layers, especially due to a mechanism known as CO2 Stress Corrosion Cracking (SCC-CO2). Therefore, it becomes mandatory that inspection systems suitable for submarine use in order to d...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: C A Marinho E F O de Jesus A H M F T Silva D F Oliveira R T Lopes Source Type: research

Experimental determination of k < sub > 0 < /sub > and Q < sub > 0 < /sub > values for < sup > 121 < /sup > Sb, < sup > 123 < /sup > Sb and < sup > 130 < /sup > Ba targets applying covariance analysis
Appl Radiat Isot. 2022 Jan 23;184:110122. doi: 10.1016/j.apradiso.2022.110122. Online ahead of print.ABSTRACTThis work consists of an experimental determination of k0 and Q0 for 121Sb, 123Sb and 130Ba targets. Covariance analysis has been introduced to supply not only the overall uncertainties in these parameters but also their correlations. The irradiations were performed near the core of the IEA-R1 4.5 MW swimming-pool nuclear research reactor of the Nuclear and Energy Research Institute (IPEN-CNEN/SP), in São Paulo, Brazil. The epithermal neutron flux shape parameter, alpha, at the irradiation position is very close to...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: L F Barros M S Dias M F Koskinas Source Type: research

Low-cost target system for neutron activation using a medical cyclotron. Application to the non-destructive analysis of gold and silver
Appl Radiat Isot. 2022 Jan 20;184:110117. doi: 10.1016/j.apradiso.2022.110117. Online ahead of print.ABSTRACTA low cost and easily implemented target system for neutron activation was developed that takes advantage of the neutron flux produced as a by-product during the cyclotron production of medical isotopes. Samples are placed in close proximity to an 18O(p,n)18F target on a cyclotron operating between 18 and 22 MeV for irradiation. Analysis of the samples by gamma spectroscopy shows that activation is proportional to the neutron exposure, and the mass of the element present in the sample.PMID:35272232 | DOI:10.1016/j.a...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Michael Campbell Adrianna Tikka Source Type: research

Radioecological studies of the main naturally occurring radionuclides in the area of Gela Phosphate Industry (Italy) through radioanalytical separation and measurement techniques
Appl Radiat Isot. 2022 Mar 1;184:110173. doi: 10.1016/j.apradiso.2022.110173. Online ahead of print.ABSTRACTRadioecological studies have been carried out in area of Gela Phosphate Industry. As a part of the project, some achievements have been described in the paper, including: (1) determination of the activity concentrations of 210Po, 210Pb, uranium, and radium isotopes in phosphogypsum, phosphoric acid, soil, and marine sediment, (2) inventory estimation of the NORM in the residual product and by-product, and (3) the radioecological investigation and evaluation on the NORM contamination in the sea area of Gela. The obtai...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Guogang Jia Monica Buchetti Daniela Conti Leandro Magro Sara Mariani Source Type: research

Application of an algebraic methodology for the combination of Berthold LB6411 and WENDI-II for neutron area monitoring in D-T neutron generators and fusion facilities
The objective of this work is to establish a methodology to combine the dose response functions of Berthold LB6411 and WENDI-II, adjusting this combined function to the ICRP74 conversion function: this combination shows an almost perfect adjustment between 0.5 and 20 MeV. Thus, this article presents an easy and cheap alternative to the recalibration in D-T generators.PMID:35272229 | DOI:10.1016/j.apradiso.2022.110179 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Roberto Garc ía-Baonza Eduardo Gallego Gonzalo F Garc ía-Fernández Source Type: research

Annulus flooding detection system in flexible pipes using gamma rays transmission technique
Appl Radiat Isot. 2022 Mar 4;184:110177. doi: 10.1016/j.apradiso.2022.110177. Online ahead of print.ABSTRACTFlexible pipes are modular constructions made up of several layers. They are broadly employed in oil & gas industry, playing an important role in the Brazilian Pre-Salt production. Under specific conditions, seawater can ingress and this contact with metallic middle layers can significantly lead to a service life reduction of these layers, especially due to a mechanism known as CO2 Stress Corrosion Cracking (SCC-CO2). Therefore, it becomes mandatory that inspection systems suitable for submarine use in order to d...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: C A Marinho E F O de Jesus A H M F T Silva D F Oliveira R T Lopes Source Type: research

Experimental determination of k < sub > 0 < /sub > and Q < sub > 0 < /sub > values for < sup > 121 < /sup > Sb, < sup > 123 < /sup > Sb and < sup > 130 < /sup > Ba targets applying covariance analysis
Appl Radiat Isot. 2022 Jan 23;184:110122. doi: 10.1016/j.apradiso.2022.110122. Online ahead of print.ABSTRACTThis work consists of an experimental determination of k0 and Q0 for 121Sb, 123Sb and 130Ba targets. Covariance analysis has been introduced to supply not only the overall uncertainties in these parameters but also their correlations. The irradiations were performed near the core of the IEA-R1 4.5 MW swimming-pool nuclear research reactor of the Nuclear and Energy Research Institute (IPEN-CNEN/SP), in São Paulo, Brazil. The epithermal neutron flux shape parameter, alpha, at the irradiation position is very close to...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: L F Barros M S Dias M F Koskinas Source Type: research

Low-cost target system for neutron activation using a medical cyclotron. Application to the non-destructive analysis of gold and silver
Appl Radiat Isot. 2022 Jan 20;184:110117. doi: 10.1016/j.apradiso.2022.110117. Online ahead of print.ABSTRACTA low cost and easily implemented target system for neutron activation was developed that takes advantage of the neutron flux produced as a by-product during the cyclotron production of medical isotopes. Samples are placed in close proximity to an 18O(p,n)18F target on a cyclotron operating between 18 and 22 MeV for irradiation. Analysis of the samples by gamma spectroscopy shows that activation is proportional to the neutron exposure, and the mass of the element present in the sample.PMID:35272232 | DOI:10.1016/j.a...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Michael Campbell Adrianna Tikka Source Type: research

Radioecological studies of the main naturally occurring radionuclides in the area of Gela Phosphate Industry (Italy) through radioanalytical separation and measurement techniques
Appl Radiat Isot. 2022 Mar 1;184:110173. doi: 10.1016/j.apradiso.2022.110173. Online ahead of print.ABSTRACTRadioecological studies have been carried out in area of Gela Phosphate Industry. As a part of the project, some achievements have been described in the paper, including: (1) determination of the activity concentrations of 210Po, 210Pb, uranium, and radium isotopes in phosphogypsum, phosphoric acid, soil, and marine sediment, (2) inventory estimation of the NORM in the residual product and by-product, and (3) the radioecological investigation and evaluation on the NORM contamination in the sea area of Gela. The obtai...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Guogang Jia Monica Buchetti Daniela Conti Leandro Magro Sara Mariani Source Type: research

Application of an algebraic methodology for the combination of Berthold LB6411 and WENDI-II for neutron area monitoring in D-T neutron generators and fusion facilities
The objective of this work is to establish a methodology to combine the dose response functions of Berthold LB6411 and WENDI-II, adjusting this combined function to the ICRP74 conversion function: this combination shows an almost perfect adjustment between 0.5 and 20 MeV. Thus, this article presents an easy and cheap alternative to the recalibration in D-T generators.PMID:35272229 | DOI:10.1016/j.apradiso.2022.110179 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Roberto Garc ía-Baonza Eduardo Gallego Gonzalo F Garc ía-Fernández Source Type: research

Annulus flooding detection system in flexible pipes using gamma rays transmission technique
Appl Radiat Isot. 2022 Mar 4;184:110177. doi: 10.1016/j.apradiso.2022.110177. Online ahead of print.ABSTRACTFlexible pipes are modular constructions made up of several layers. They are broadly employed in oil & gas industry, playing an important role in the Brazilian Pre-Salt production. Under specific conditions, seawater can ingress and this contact with metallic middle layers can significantly lead to a service life reduction of these layers, especially due to a mechanism known as CO2 Stress Corrosion Cracking (SCC-CO2). Therefore, it becomes mandatory that inspection systems suitable for submarine use in order to d...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: C A Marinho E F O de Jesus A H M F T Silva D F Oliveira R T Lopes Source Type: research

Experimental determination of k < sub > 0 < /sub > and Q < sub > 0 < /sub > values for < sup > 121 < /sup > Sb, < sup > 123 < /sup > Sb and < sup > 130 < /sup > Ba targets applying covariance analysis
Appl Radiat Isot. 2022 Jan 23;184:110122. doi: 10.1016/j.apradiso.2022.110122. Online ahead of print.ABSTRACTThis work consists of an experimental determination of k0 and Q0 for 121Sb, 123Sb and 130Ba targets. Covariance analysis has been introduced to supply not only the overall uncertainties in these parameters but also their correlations. The irradiations were performed near the core of the IEA-R1 4.5 MW swimming-pool nuclear research reactor of the Nuclear and Energy Research Institute (IPEN-CNEN/SP), in São Paulo, Brazil. The epithermal neutron flux shape parameter, alpha, at the irradiation position is very close to...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: L F Barros M S Dias M F Koskinas Source Type: research

Low-cost target system for neutron activation using a medical cyclotron. Application to the non-destructive analysis of gold and silver
Appl Radiat Isot. 2022 Jan 20;184:110117. doi: 10.1016/j.apradiso.2022.110117. Online ahead of print.ABSTRACTA low cost and easily implemented target system for neutron activation was developed that takes advantage of the neutron flux produced as a by-product during the cyclotron production of medical isotopes. Samples are placed in close proximity to an 18O(p,n)18F target on a cyclotron operating between 18 and 22 MeV for irradiation. Analysis of the samples by gamma spectroscopy shows that activation is proportional to the neutron exposure, and the mass of the element present in the sample.PMID:35272232 | DOI:10.1016/j.a...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Michael Campbell Adrianna Tikka Source Type: research

Radioecological studies of the main naturally occurring radionuclides in the area of Gela Phosphate Industry (Italy) through radioanalytical separation and measurement techniques
Appl Radiat Isot. 2022 Mar 1;184:110173. doi: 10.1016/j.apradiso.2022.110173. Online ahead of print.ABSTRACTRadioecological studies have been carried out in area of Gela Phosphate Industry. As a part of the project, some achievements have been described in the paper, including: (1) determination of the activity concentrations of 210Po, 210Pb, uranium, and radium isotopes in phosphogypsum, phosphoric acid, soil, and marine sediment, (2) inventory estimation of the NORM in the residual product and by-product, and (3) the radioecological investigation and evaluation on the NORM contamination in the sea area of Gela. The obtai...
Source: Applied Radiation and Isotopes - March 10, 2022 Category: Radiology Authors: Guogang Jia Monica Buchetti Daniela Conti Leandro Magro Sara Mariani Source Type: research

Catalogue of dose rate constants for more than 400 radionuclides in terms of ambient dose H < sup > ∗ < /sup > and comparison of figures to ambient dose equivalent H < sup > ∗ < /sup > (10)
Appl Radiat Isot. 2022 Feb 28;184:110159. doi: 10.1016/j.apradiso.2022.110159. Online ahead of print.ABSTRACTIn 2020, the International Commission on Radiation Units & Measurements ICRU has released Report 95 on "Operational Quantities for External Radiation Exposure". This publication introduced a new measurand, namely ambient dose H∗, as the operational quantity for external exposure to be applied in the future replacing ambient dose equivalent H∗(10). It should be noted that this change will make it necessary to adjust previously used constants and coefficients or at least to review them with regard to the new m...
Source: Applied Radiation and Isotopes - March 8, 2022 Category: Radiology Authors: Christoph Stettner Christian Hranitzky Karin Poljanc Friederike Strebl Christina Streli Source Type: research