Analysis of the Preliminary Bunker Shielding Design with a Mix of Populated and Unpopulated Neutron Beamlines at the Spallation Neutron Source Second Target Station

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Abstract

This paper began by presenting a summary of bunker shielding analyses that considered all beamlines populated or all beamlines unpopulated. This analysis led to the concern that populated beamlines next to unpopulated beamlines might increase the total effective dose rate outside the bunker to exceed the 0.25 mrem/h limit because unpopulated beamlines do not have any beamline shielding installed outside the bunker. The analysis indicated that this concern was valid, but the increase above 0.25 mrem/h was not substantial and was limited to a relatively small region. Before the STS final design is completed, the shielding design of the bunker wall and beamline shielding must be refined to reduce the total effective dose rate that exceeds 0.25 mrem/h for an unpopulated beamline next to populated beamlines.

Original languageEnglish
Title of host publicationProceedings of the 14th International Conference on Radiation Shielding and 21st Topical Meeting of the Radiation Protection and Shielding Division, ICRS 2022/RPSD 2022
PublisherAmerican Nuclear Society
Pages466-469
Number of pages4
ISBN (Electronic)9780894487866
DOIs
StatePublished - 2022
Event14th International Conference on Radiation Shielding, ICRS 2022 and 21st Topical Meeting of the Radiation Protection and Shielding Division, RPSD 2022 - Seattle, United States
Duration: Sep 25 2022Sep 29 2022

Publication series

NameProceedings of the 14th International Conference on Radiation Shielding and 21st Topical Meeting of the Radiation Protection and Shielding Division, ICRS 2022/RPSD 2022

Conference

Conference14th International Conference on Radiation Shielding, ICRS 2022 and 21st Topical Meeting of the Radiation Protection and Shielding Division, RPSD 2022
Country/TerritoryUnited States
CitySeattle
Period09/25/2209/29/22

Funding

Notice: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

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