Post-irradiation analysis of SINQ target rods by thermal neutron radiography

Vontobel, Peter; Tamaki, Masayoshi; Mori, Noriaki; Ashida, Takaki; Zanini, L.; Lehmann, Eberhard; Jaggi, Matthias

doi:10.1016/j.jnucmat.2006.05.033

Cited by 21 publications

(10 citation statements)

References 9 publications

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“…However, INL is upgrading its existing transfer technique to include neutron computed radiography (CR) using PSP plates (Craft et al, 2014). This technique is used at other facilities that periodically perform neutron radiography of highly radioactive specimens (Vontobel et al, 2006). Near-term plans include qualification of a neutron CR system at INL for PIE of irradiated nuclear fuel experiments.…”

Section: Upgrading and Developing New Neutron Imaging Capabilitiesmentioning

confidence: 99%

Neutron Radiography of Irradiated Nuclear Fuel at Idaho National Laboratory

et al. 2015

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Neutron radiography of irradiated nuclear fuel provides more comprehensive information about the internal condition of irradiated nuclear fuel than any other non-destructive technique to date. Idaho National Laboratory (INL) has multiple nuclear fuels research and development programs that routinely evaluate irradiated fuels using neutron radiography. The Neutron Radiography reactor (NRAD) sits beneath a shielded hot cell facility where neutron radiography and other evaluation techniques are performed on these highly radioactive objects. The NRAD currently uses the foil-film transfer technique for imaging fuel that is time consuming but provides high spatial resolution. This paper describes the NRAD and hot cell facilities, the current neutron radiography capabilities available at INL, planned upgrades to the neutron imaging systems, and new facilities being brought online at INL related to neutron imaging.

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Section: Upgrading and Developing New Neutron Imaging Capabilitiesmentioning

confidence: 99%

Neutron Radiography of Irradiated Nuclear Fuel at Idaho National Laboratory

et al. 2015

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“…A new approach for such kind of investigations is based on imaging plates containing Dy, embedded inside the neutron/gamma sensitive layer, as proposed and introduced by Tamaki [11,12]. After exposure in the mixed neutron/gamma spectrum and subsequent erasure of the neutron/gamma-excitations, the image arising from the Dydecay can be read.…”

Section: Inspection Of Highly Activated Samplesmentioning

confidence: 99%

“…Some selected rods were inspected with neutron imaging methods before (not activated) and after operation (highly activated) Fig. 6 Target rod of SINQ with lead filling after two years of proton exposure, inspected by neutron imaging methods using an adapted imaging plate method [11,12]. Watch the inserted thermocouple at the right and the crack in the lead filling at the left levitation forces when the lead was partially melted.…”

Section: Inspection Of Highly Activated Samplesmentioning

confidence: 99%

Neutron imaging at PSI: a promising tool in materials science and technology

Lehmann

Wagner

2010

Appl. Phys. A

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Neutron imaging as a method for non-destructive studies takes advantage of the alternative contrast mechanism of neutrons compared to X-rays: most of the light elements feature high contrast, whereas heavy elements are relatively transparent to neutrons. In the previous decade, the neutron imaging technique has made substantial progress in well-tailored and well-equipped beam lines, in improvements of the image recording quality and efficiency by new and modern imaging techniques, and in modern image processing tools.This article gives an overview of PSI's activities in this promising and still developing field combining high potential as research tool and as technique for industrial investigation and non-destructive testing. Examples are chosen from the fields of energy and mobility and inspection of highly activated samples. Furthermore, recent developments in phase contrast imaging and energy selective imaging studies are highlighted. Finally, future trends in neutron imaging are addressed.

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“…INL is pursuing multiple efforts to advance its neutron imaging capabilities for evaluating irradiated fuel and other applications, including converting from film to photo-stimulated phosphor (PSP) image plates (IP) for neutron computed radiography (nCR). Neutron nCR is the current state-of-the-art for neutron imaging of highly-radioactive objects [2].…”

Section: Introductionmentioning

confidence: 99%

Conversion from Film Based Transfer Method Neutron Radiography to Computed Radiography for Post Irradiation Examination of Nuclear Fuels

Papaioannou

Craft

2020

Neutron Radiography - WCNR-11

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The Idaho National Laboratory supports multiple programs that are actively developing, testing, and evaluating new nuclear fuels including advanced commercial nuclear fuels, accident tolerant fuels, reduced-enrichment research reactor fuels, transmutation fuels, and advanced reactor fuels. Post irradiation examinations (PIE) of nondestructive and destructive techniques are performed at INL to research nuclear fuel behavior and performance under various conditions. The Neutron Radiography Reactor (NRAD) at INL is utilized to perform nondestructive examinations of irradiated nuclear fuels and the results of these examinations are used to aid in the decision making process for subsequent destructive exams. NRAD has historically performed transfer method neutron radiography with film as the imaging medium. This paper documents the effort to convert from film to computed radiography for PIE. Equipment selection, system characterization, and testing were performed as part of phase I. Phase II, as described in this paper, focuses on determining image resolution of the computed radiography system.

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Post-irradiation analysis of SINQ target rods by thermal neutron radiography

Cited by 21 publications

References 9 publications

Neutron Radiography of Irradiated Nuclear Fuel at Idaho National Laboratory

Neutron Radiography of Irradiated Nuclear Fuel at Idaho National Laboratory

Neutron imaging at PSI: a promising tool in materials science and technology

Conversion from Film Based Transfer Method Neutron Radiography to Computed Radiography for Post Irradiation Examination of Nuclear Fuels

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