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Title: GROTESQUE: Complex Geometric Arrangement of Unreflected HEU (93.15) Metal Pieces

Abstract

The GROTESQUE experiments were designed specifically to develop and test neutronics for the GEOM subroutine of the 05R code. Two complex arrangements of various highly enriched uranium metal cylinders, rectangular parallelepipeds, and spheres were arranged in a circular formation on a steel diaphragm. A centerpiece was raised remotely through a hole in the steel diaphragm to achieve criticality. The first arrangement consisted of five major units, each major unit consisting of a stack of smaller uranium pieces. The second arrangement utilized nine major units, again consisting of stacks of smaller uranium pieces. The 9-unit arrangement is the only experiment discussed in this evaluation, since the five stack experiment never achieved criticality. The 9-unit arrangement is shown in Figure 1.1. The experiments were performed at the Oak Ridge Critical Experiments Facility (ORCEF) in June 1964. The 9-unit configuration was later used as part of the development process for early versions of KENO and a model representing a variation of this experiment (Sample Problem 7: GROTESQUE without the Diaphragm) is released with modern versions of SCALE for testing the proper installation of the KENO module. An experimental report for the GROTESQUE experiment has not been published; however there are two publications thatmore » describe the experiment (References 1 and 2). A separate reportc discussing the conversion of the 05r model into a KENO model was published; however, the author did not consult with the experimenter for GROTESQUE. This report is considered unreliable (except for dimensions) by the experimenter and should not be used to obtain information pertinent to the GROTESQUE experiment. The Oak Ridge Critical Experiments Facility (ORCEF) Logbook 15r contains the primary documentation from the experimenter for this experiment. The GROTESQUE arrangement of nine major units was evaluated an determined to be an acceptable benchmark experiment.« less

Authors:
;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
DOE - NA
OSTI Identifier:
1042364
Report Number(s):
INL/EXT-12-24628
TRN: US1202853
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 36 MATERIALS SCIENCE; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 97 MATHEMATICAL METHODS AND COMPUTING; BENCHMARKS; CONFIGURATION; CRITICALITY; DIAPHRAGM; DIMENSIONS; DOCUMENTATION; EVALUATION; HIGHLY ENRICHED URANIUM; OR-CEF REACTOR; STEELS; TESTING; URANIUM; Benchmark; GROTESQUE; HEU; ICSBEP

Citation Formats

Mackenzie L. Gorham, and John D. Bess. GROTESQUE: Complex Geometric Arrangement of Unreflected HEU (93.15) Metal Pieces. United States: N. p., 2011. Web. doi:10.2172/1042364.
Mackenzie L. Gorham, & John D. Bess. GROTESQUE: Complex Geometric Arrangement of Unreflected HEU (93.15) Metal Pieces. United States. doi:10.2172/1042364.
Mackenzie L. Gorham, and John D. Bess. Thu . "GROTESQUE: Complex Geometric Arrangement of Unreflected HEU (93.15) Metal Pieces". United States. doi:10.2172/1042364. https://www.osti.gov/servlets/purl/1042364.
@article{osti_1042364,
title = {GROTESQUE: Complex Geometric Arrangement of Unreflected HEU (93.15) Metal Pieces},
author = {Mackenzie L. Gorham and John D. Bess},
abstractNote = {The GROTESQUE experiments were designed specifically to develop and test neutronics for the GEOM subroutine of the 05R code. Two complex arrangements of various highly enriched uranium metal cylinders, rectangular parallelepipeds, and spheres were arranged in a circular formation on a steel diaphragm. A centerpiece was raised remotely through a hole in the steel diaphragm to achieve criticality. The first arrangement consisted of five major units, each major unit consisting of a stack of smaller uranium pieces. The second arrangement utilized nine major units, again consisting of stacks of smaller uranium pieces. The 9-unit arrangement is the only experiment discussed in this evaluation, since the five stack experiment never achieved criticality. The 9-unit arrangement is shown in Figure 1.1. The experiments were performed at the Oak Ridge Critical Experiments Facility (ORCEF) in June 1964. The 9-unit configuration was later used as part of the development process for early versions of KENO and a model representing a variation of this experiment (Sample Problem 7: GROTESQUE without the Diaphragm) is released with modern versions of SCALE for testing the proper installation of the KENO module. An experimental report for the GROTESQUE experiment has not been published; however there are two publications that describe the experiment (References 1 and 2). A separate reportc discussing the conversion of the 05r model into a KENO model was published; however, the author did not consult with the experimenter for GROTESQUE. This report is considered unreliable (except for dimensions) by the experimenter and should not be used to obtain information pertinent to the GROTESQUE experiment. The Oak Ridge Critical Experiments Facility (ORCEF) Logbook 15r contains the primary documentation from the experimenter for this experiment. The GROTESQUE arrangement of nine major units was evaluated an determined to be an acceptable benchmark experiment.},
doi = {10.2172/1042364},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {9}
}

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