Shielding calculations and verifications for the new Radiation Instrument Calibration Facility at Los Alamos National Laboratory
Abstract
MCNP-4C1 was used to perform the shielding design for the new Central Health Physics Calibration Facility (CHPCF) at Los Alamos National Laboratory (LANL). The problem of shielding the facility was subdivided into three separate components: (1) Transmission; (2) Skyshine; and (3) Maze Streaming/ Transmission. When possible, actual measurements were taken to verify calculation results. The comparison of calculation versus measurement results shows excellent agreement for neutron calculations. For photon comparisons, calculations resulted in conservative estimates of the Effective Dose Equivalent (EDE) compared to measured results. This disagreement in the photon measurements versus calculations is most likely due to several conservative assumptions regarding shield density and composition. For example, reinforcing steel bars (Rebar) in the concrete shield walls were not included in the shield model.
- Authors:
-
- Gerald L.
- Richard H.
- David T.
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 975990
- Report Number(s):
- LA-UR-02-0516; LA-UR-02-516
TRN: US201018%%1075
- Resource Type:
- Conference
- Resource Relation:
- Conference: "Submitted to: American Nuclear Society, 12 Biennial RPSD Topical Meeting, April 14-18, 2002, Santa Fe, NM"
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; CALIBRATION; CONCRETES; DESIGN; DOSE EQUIVALENTS; LANL; NEUTRONS; PHOTONS; RADIATION PROTECTION; RADIATIONS; SHIELDING; SHIELDS; STEELS
Citation Formats
George, G L, Olsher, R H, and Seagraves, D T. Shielding calculations and verifications for the new Radiation Instrument Calibration Facility at Los Alamos National Laboratory. United States: N. p., 2002.
Web.
George, G L, Olsher, R H, & Seagraves, D T. Shielding calculations and verifications for the new Radiation Instrument Calibration Facility at Los Alamos National Laboratory. United States.
George, G L, Olsher, R H, and Seagraves, D T. 2002.
"Shielding calculations and verifications for the new Radiation Instrument Calibration Facility at Los Alamos National Laboratory". United States. https://www.osti.gov/servlets/purl/975990.
@article{osti_975990,
title = {Shielding calculations and verifications for the new Radiation Instrument Calibration Facility at Los Alamos National Laboratory},
author = {George, G L and Olsher, R H and Seagraves, D T},
abstractNote = {MCNP-4C1 was used to perform the shielding design for the new Central Health Physics Calibration Facility (CHPCF) at Los Alamos National Laboratory (LANL). The problem of shielding the facility was subdivided into three separate components: (1) Transmission; (2) Skyshine; and (3) Maze Streaming/ Transmission. When possible, actual measurements were taken to verify calculation results. The comparison of calculation versus measurement results shows excellent agreement for neutron calculations. For photon comparisons, calculations resulted in conservative estimates of the Effective Dose Equivalent (EDE) compared to measured results. This disagreement in the photon measurements versus calculations is most likely due to several conservative assumptions regarding shield density and composition. For example, reinforcing steel bars (Rebar) in the concrete shield walls were not included in the shield model.},
doi = {},
url = {https://www.osti.gov/biblio/975990},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}