Civilengtiger: added link to ARMF-I article
'''Advanced Reactivity Measurement Facility II''' ('''ARMF-II''') was a [[research reactor]] which was located at the [[Argonne National Laboratory]], a [[United States Department of Energy national laboratories|United States Department of Energy national laboratory]], facility located in the high desert of southeastern [[Idaho]] between [[Idaho Falls, Idaho]] and [[Arco, Idaho]]. ARMF-II was nearly identical to [[ARMF-I]].
==History==
The ARMF-II, a reactor located in a small pool in a building east of the MTR in the Test Reactor Area, was used to determine the nuclear characteristics of reactor fuels and other materials subject to testing in the MTR. Together with the MTR, the reactor helped improve the performance, reliability, and quality of reactor core components. It had a “readout” system which automatically recorded measurements on IBM data cards. This refinement over the ARMF-I meant that operators could process data quickly in electronic computers. Designers of the ARMF-II benefitted from previous experience with the ARMF-I and the Reactivity Measurement Facilit.y<ref name=PTP>https://ift.tt/37zf5CM Stacy, Susan M. “Proving the Principle – Appendix B: Fifty Years of Reactors at the INEEL”. 2000.</ref>
The Advanced Reactivity Measurement Facilities, ARMF-I and ARMF-II, were nearly identical critical facilities and were used almost exclusively for measuring reactor physics parameters, such as reactor-spectrum cross sections and resonance integral cross sections. They were designed to (a) have large statistical weights for fuels and poisons, (b) be mechanically stable enough to produce reproducible reactivity measurements, and (c) have sensitive instrumentation capable of measuring very small reactivities.<ref name=PPC>https://ift.tt/3aqQdPr Burdick, E.E., et. al. "The Advanced Reactivity Measurement Facilities". IDO-17005. October 1964. Phillips Petroleum Company on behalf of the US Atomic Energy Commission.</ref>
ARMF-II began operation October 10, 1960 and ceased operation sometime prior to 2000.<ref name=PTP />
==Design==
ARMF-I and ARMF-II were near identical pool reactors. The greatest difference between the two ARMF reactors was ARMF-II had a “readout” system which automatically recorded measurements on IBM data cards. This refinement over the ARMF-I meant that operators could process data quickly in electronic computers.<ref name=PTP /> ARMF-I and ARMF-II were housed in a 40-foot by 60-foot cinder block building located just east of the MTR canal tunnel; the building was designed from the initial concept for two reactors. These facilities were swimming-pool-type reactors having light-water moderated cores made up of plate-type fuel elements containing high [[enriched uranium]] at 93% U-235. The facilities were located at the National Reactor Testing Station near the Materials Testing Reactor (MTR). Being located near the MTR permited measurements on short-lived fission products and transmuted isotopes. By use of the capsule 'transfer tube' connecting the MTR and ARMF canals, a capsule could be transferred from the MTR hydraulic rabbit to the ARMF and prepared for reactivity measurements in 15 minutes.<ref name=PPC />
==Bibliography==
*Stacy, Susan M. “Proving the Principle.” Idaho Operations Office of the Department of Energy. Idaho Falls, Idaho. DOE/ID-10799. 2000. Retrieved from: https://ift.tt/2WzDSQU
*This article incorporates text from the <i>public domain</i> (prepared by or on behalf of the US government) work “Proving the Principle” (2000) which may be found at: https://ift.tt/2WzDSQU.
==See also==
}}
*[[Argonne National Laboratory]]
*[[Idaho National Laboratory]]
*[[List_of_nuclear_research_reactors#United_States]]
==References==
Citations
[[Category:Nuclear research reactors]]
==History==
The ARMF-II, a reactor located in a small pool in a building east of the MTR in the Test Reactor Area, was used to determine the nuclear characteristics of reactor fuels and other materials subject to testing in the MTR. Together with the MTR, the reactor helped improve the performance, reliability, and quality of reactor core components. It had a “readout” system which automatically recorded measurements on IBM data cards. This refinement over the ARMF-I meant that operators could process data quickly in electronic computers. Designers of the ARMF-II benefitted from previous experience with the ARMF-I and the Reactivity Measurement Facilit.y<ref name=PTP>https://ift.tt/37zf5CM Stacy, Susan M. “Proving the Principle – Appendix B: Fifty Years of Reactors at the INEEL”. 2000.</ref>
The Advanced Reactivity Measurement Facilities, ARMF-I and ARMF-II, were nearly identical critical facilities and were used almost exclusively for measuring reactor physics parameters, such as reactor-spectrum cross sections and resonance integral cross sections. They were designed to (a) have large statistical weights for fuels and poisons, (b) be mechanically stable enough to produce reproducible reactivity measurements, and (c) have sensitive instrumentation capable of measuring very small reactivities.<ref name=PPC>https://ift.tt/3aqQdPr Burdick, E.E., et. al. "The Advanced Reactivity Measurement Facilities". IDO-17005. October 1964. Phillips Petroleum Company on behalf of the US Atomic Energy Commission.</ref>
ARMF-II began operation October 10, 1960 and ceased operation sometime prior to 2000.<ref name=PTP />
==Design==
ARMF-I and ARMF-II were near identical pool reactors. The greatest difference between the two ARMF reactors was ARMF-II had a “readout” system which automatically recorded measurements on IBM data cards. This refinement over the ARMF-I meant that operators could process data quickly in electronic computers.<ref name=PTP /> ARMF-I and ARMF-II were housed in a 40-foot by 60-foot cinder block building located just east of the MTR canal tunnel; the building was designed from the initial concept for two reactors. These facilities were swimming-pool-type reactors having light-water moderated cores made up of plate-type fuel elements containing high [[enriched uranium]] at 93% U-235. The facilities were located at the National Reactor Testing Station near the Materials Testing Reactor (MTR). Being located near the MTR permited measurements on short-lived fission products and transmuted isotopes. By use of the capsule 'transfer tube' connecting the MTR and ARMF canals, a capsule could be transferred from the MTR hydraulic rabbit to the ARMF and prepared for reactivity measurements in 15 minutes.<ref name=PPC />
==Bibliography==
*Stacy, Susan M. “Proving the Principle.” Idaho Operations Office of the Department of Energy. Idaho Falls, Idaho. DOE/ID-10799. 2000. Retrieved from: https://ift.tt/2WzDSQU
*This article incorporates text from the <i>public domain</i> (prepared by or on behalf of the US government) work “Proving the Principle” (2000) which may be found at: https://ift.tt/2WzDSQU.
==See also==
}}
*[[Argonne National Laboratory]]
*[[Idaho National Laboratory]]
*[[List_of_nuclear_research_reactors#United_States]]
==References==
Citations
[[Category:Nuclear research reactors]]
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