Status Report for NEET In-Pile Sensor Irradiation Capabilities at TREAT

Woolstenhulme, Nicolas E.; Baker, C.; Bess, John D.; Chapman, Daniel; Jensen, Colby; Hill, Connie M.; Wachs, D. M.; Wilson, Stacey

doi:10.2172/1472112

Cited by 6 publications

(10 citation statements)

References 2 publications

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“…Experiment assemblies are typically removed from or placed into the core through a slot in the reactor's upper rotating shield plug, handled outside the reactor using shielded casks, and stowed below grade in storage holes when not in use. Four slots can be opened through the vertical concrete shield walls and permanent graphite reflector surrounding the above-grade core to provide various capabilities [20]. TREAT experiment rigs are, in essence, self-contained reactor vessels in which the neutrons are produced externally.…”

Section: Treatmentioning

confidence: 99%

“…The shape of the TREAT is arbitrary, as long as the power/time profile is a function and the total integral energy is less than 2500 MJ. Figure 3 shows several simple transients which may be considered to encompass the extremes of TREAT transients in terms of power and duration [20].…”

Section: Transientsmentioning

confidence: 99%

“…An innovative approach to separate effects transient testing was conceptualized to leverage minor radioactivity built-in during brief TREAT irradiations by allowing for testing of small, previously unirradiated specimens in low activation hardware to enable easy extraction and shipping for PIE within weeks of irradiation. The concept was named the Minimal Activation Retrievable Capsule Holder (MARCH) irradiation vehicle system [20][21][22]. The modular nature of the MARCH system allows for remarkable flexibility in the design and execution of irradiation tests.…”

Section: The March Systemmentioning

confidence: 99%

“…The MARCH system components are shown in Figure 4. [20][21][22]. The BUSTER provides primary and secondary containment for experiments using the MARCH system.…”

Section: The March Systemmentioning

confidence: 99%

“…The Characterization-scale Instrumented Neutron Dose Irradiation module (CINDI) module can be used for irradiation of small fuel or other material samples in well-controlled and monitored temperature conditions [20][21][22]. CINDI capsules (Figure 8) can house a small stack of disc-like material specimens 5mm in diameter.…”

Section: Cindimentioning

confidence: 99%

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Design Requirements for Ultrasonic Deformation Sensor for TREAT Experiments

Daw

Crawford

Skifton

et al. 2018

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This report is meant to be a guiding document for the development of an ultrasonic deformation sensor to be deployed in TREAT transient experiments. As such, information detailing the reactor, likely experiment capsules, and facilities have been included. Also, information on the required measurement speed and resolution and design constraints have been documented through literature reviews and interactions with TREAT team leads. Development of this document has shown that although there are many potential applications, each with variations on design and needs, there are several basic constraints that need to be met for any application. The SETH capsule has been selected as a first target application, as it is planned for near term deployment, matches most of the design considerations of other planned capsules, and is designed to be used for sensor testing, along with fuel and material irradiations.

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Section: Treatmentioning

confidence: 99%

Section: Transientsmentioning

confidence: 99%

Section: The March Systemmentioning

confidence: 99%

“…The MARCH system components are shown in Figure 4. [20][21][22]. The BUSTER provides primary and secondary containment for experiments using the MARCH system.…”

Section: The March Systemmentioning

confidence: 99%

Section: Cindimentioning

confidence: 99%

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Design Requirements for Ultrasonic Deformation Sensor for TREAT Experiments

Daw

Crawford

Skifton

et al. 2018

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Nuclear characterization of a general-purpose instrumentation and materials testing location in TREAT

Bess

Woolstenhulme

Jensen

et al. 2019

Annals of Nuclear Energy

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The Transient Reactor Test facility (TREAT) was constructed in the late 1950s, provided thousands of transient irradiations before being placed in standby in 1994, and resumed operations in 2017 in order to reclaim its crucial role in nuclear-heated safety research. The latter half of TREAT's historic operation was best known for integral-scale testing of fuel specimens under postulated reactor plant accident conditions, while TREAT's earlier history included Use Specimen Transient Experiment Rig (BUSTER) test position of the MARCH system.Though results are directly applicable to MIMIC and BUSTER, they also provide general quantification of the nuclear performance of the reactor and potential test materials, crucial for evaluating potential experiment design and response in TREAT. The neutron and photon flux environments were calculated via MCNP with ENDF/B-VII.1 nuclear data. Wire heating rates and atomic displacement calculations were also performed; sample calculations using historic TREAT operational data were provided to demonstrate example conditions. These calculations were performed to provide steady-state baseline reference values typical in both half-and fullslotted TREAT core configurations, enabling design scoping analysis prior to development of more specific design testing needs and transient testing experimentation. Due to the limited availability of historic data to validate current calculations, validation experiments are planned once the BUSTER test vehicle has been constructed.

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