skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Sensitivity Analysis of the Thermal Response of 9975 Packaging Using Factorial Design Methods

Abstract

A method is presented for using the statistical design of experiment (2{sup k} Factorial Design) technique in the sensitivity analysis of the thermal response (temperature) of the 9975 radioactive material packaging where multiple thermal properties of the impact absorbing and fire insulating material Celotex and certain boundary conditions are subject to uncertainty. 2{sup k} Factorial Design method is very efficient in the use of available data and is capable of analyzing the impact of main variables (Factors) and their interactions on the component design. The 9975 design is based on detailed finite element (FE) analyses and extensive proof testing to meet the design requirements given in 10CFR71 [1]. However, the FE analyses use Celotex thermal properties that are based on published data and limited experiments. Celotex is an orthotropic material that is used in the home building industry. Its thermal properties are prone to variation due to manufacturing and fabrication processes, and due to long environmental exposure. This paper will evaluate the sensitivity of variations in thermal conductivity of the Celotex, convection coefficient at the drum surface, and drum emissivity (herein called Factors) on the thermal response of 9975 packaging under Normal Conditions of Transport (NCT). Application of this methodologymore » will ascertain the robustness of the 9975 design and it can lead to more specific and useful understanding of the effects of various Factors on 9975 performance.« less

Authors:
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC
Sponsoring Org.:
USDOE
OSTI Identifier:
881490
Report Number(s):
WSRC-MS-2005-00649
TRN: US0603107
DOE Contract Number:
DE-AC09-96SR18500
Resource Type:
Conference
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; SENSITIVITY ANALYSIS; PACKAGING; RADIOACTIVE MATERIALS; EMISSIVITY; THERMAL CONDUCTIVITY; THERMODYNAMIC PROPERTIES

Citation Formats

Gupta, Narendra K. Sensitivity Analysis of the Thermal Response of 9975 Packaging Using Factorial Design Methods. United States: N. p., 2005. Web.
Copy to clipboard
Gupta, Narendra K. Sensitivity Analysis of the Thermal Response of 9975 Packaging Using Factorial Design Methods. United States.
Copy to clipboard
Gupta, Narendra K. Mon . "Sensitivity Analysis of the Thermal Response of 9975 Packaging Using Factorial Design Methods". United States. doi:. https://www.osti.gov/servlets/purl/881490.
Copy to clipboard
@article{osti_881490,
title = {Sensitivity Analysis of the Thermal Response of 9975 Packaging Using Factorial Design Methods},
author = {Gupta, Narendra K.},
abstractNote = {A method is presented for using the statistical design of experiment (2{sup k} Factorial Design) technique in the sensitivity analysis of the thermal response (temperature) of the 9975 radioactive material packaging where multiple thermal properties of the impact absorbing and fire insulating material Celotex and certain boundary conditions are subject to uncertainty. 2{sup k} Factorial Design method is very efficient in the use of available data and is capable of analyzing the impact of main variables (Factors) and their interactions on the component design. The 9975 design is based on detailed finite element (FE) analyses and extensive proof testing to meet the design requirements given in 10CFR71 [1]. However, the FE analyses use Celotex thermal properties that are based on published data and limited experiments. Celotex is an orthotropic material that is used in the home building industry. Its thermal properties are prone to variation due to manufacturing and fabrication processes, and due to long environmental exposure. This paper will evaluate the sensitivity of variations in thermal conductivity of the Celotex, convection coefficient at the drum surface, and drum emissivity (herein called Factors) on the thermal response of 9975 packaging under Normal Conditions of Transport (NCT). Application of this methodology will ascertain the robustness of the 9975 design and it can lead to more specific and useful understanding of the effects of various Factors on 9975 performance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 31 00:00:00 EST 2005},
month = {Mon Oct 31 00:00:00 EST 2005}
}
Copy to clipboard
Conference:
View Conference
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

  • ; ;
    A full factorial experimental design and a replicated fractional factorial design were carried out using the Hybrid Performance (HyPer) project facility installed at the National Energy Technology Laboratory (NETL), U.S. Department of Energy to simulate gasifer/fuel cell/turbine hybrid power systems. The HyPer facility uses hardware in the loop (HIL) technology that couples a modified recuperated gas turbine cycle with hardware driven by a solid oxide fuel cell model. A 34 full factorial design (FFD) was selected to study the effects of four factors: cold-air, hot-air, bleed-air bypass valves, and the electric load on different parameters such as cathode and turbinemore » inlet temperatures, pressure and mass flow. The results obtained, compared with former results where the experiments were made using one-factor-at-a-time (OFAT), show that no strong interactions between the factors are present in the different parameters of the system. This work also presents a fractional factorial design (ffd) 34-2 in order to analyze replication of the experiments. In addition, a new envelope is described based on the results of the design of experiments (DoE), compared with OFAT experiments, and analyzed in an off-design integrated fuel cell/gas turbine framework. This paper describes the methodology, strategy, and results of these experiments that bring new knowledge concerning the operating state space for this kind of power generation system.« less

  • ; ; ; ... - Soc. Pet. Eng. AIME, Pap.; (United States)
    The technique of factorial design has been applied to a wet combustion mathematical simulator to study variable effects on this oil recovery process. The mathematical model was designed to study the wet combustion process in a previously waterflooded confined 5 spot. The model couples basic energy and mass balance equations so as to approximate heat and fluid flow phenomena. Specifically, the factorial design technique has allowed studying individually and collectively the effect of 9 important variables on the economics of the wet combustion process. These 9 variables are measures of time, reservoir pressure, heat loss, oil burned, waterflood residual oil,more » steam front sweep, oil bank sweep, air cost, and oil price. The final result is a simple equation containing these variables that can be used by the reservoir analyst to quickly screen reservoirs for possible use of wet combustion. (14 refs.)« less

  • ; - Trans. Am. Nucl. Soc.; (United States)

  • ; ;
    Silicon nitride was grown on polished Si wafers by a parallel plate PECVD reactor. Reaction gases were NH{sub 3} and 3% SiH{sub 4} in Ar and the rf frequency was 13.56 MHz. The film thickness and refractive index were measured by an ellipsometer. The results were analyzed using response surface methodology. The results indicate that the silane-to-ammonia flow rate ratio is the dominating parameter when determining the refractive index and that the total gas flow rate and the chamber pressure dominate the growth rate, whereas rf power has a less strong impact on growth rate and no impact on refractivemore » index. The previous results will be used when growing passivating antireflection coatings on three grain Si solar cells.« less

  • ; ; ; ...
    The development of a subsea field requires among other things a definition of the methods for pipeline, flow-lines and umbilicals laying and tie-in. The selection of a particular method is the result of a detailed analysis where advantages and drawbacks are highlighted arid weighted versus global costs and reliability. During the conceptual study for the assessment of possible different solutions, engineering tools can be used as a time saving solution for the selection of the best installation method. Different installation methods to perform tie-in have been analyzed and simplified mathematical models have been used to better understand the behavior ofmore » the pipeline during its installation. The following methods were considered: first-end pull-in, second-end pull-in, deflect-to-connect. This paper summarizes the results achieved and describes the design tools prepared during the development of the subject sensitivity analysis; such tools can be used as a helpful basis for the selection or design of a tie-in system.« less