An investigation of temperature measurement methods in nuclear power plant reactor pressure vessel annealing

Acton, R.U.; Gill, Walter; Sais, D.J.; Schulze, Daniel; Nakos, James T.

doi:10.2172/274130

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The Inconel sheath has been found to withstand the fire environment where other materials such as 304 stainless steel have not. Ultrapure MgO insulation is required to avoid thermal shunting, an insidious problem that appears in long thermocouples routed through multiple zones of high and low temperature [14,15]. The use of ungrounded junctions with grounded sheathing minimizes electrical noise prevalent in thermocouple circuitry.…”

Section: (Feet)mentioning

confidence: 99%

Well-characterized open pool experiment data and analysis for model validation and development.

Sundberg¹,

Brown²,

Blanchat³

2006

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Four Well-Characterized Open Pool fires were conducted by Fire Science and Technology Department. The focus of the Well-Characterized Open Pool fire series was to provide environmental information for open pool fires on a physics first principal basis. The experiments measured the burning rate of liquid fuel in an open pool and the resultant heat flux to a weaponsized object and the surrounding environment with well-characterized boundary and initial conditions. Results presented in this report include a general description of test observation (pre and post-test), wind measurements, fire plume topology, average fuel recession and heat release rates, and incident heat flux to the pool and to the calorimeters. As expected, results of the experiments show a strong correlation between wind conditions, fuel vaporization (mass loss) rate, and incident heat flux to the fuel and ground surface and calorimeters. Numerical fire simulations using both temporally-and spatially-dependant wind boundary conditions were performed using the Vulcan fire code. Comparisons of data to simulation predictions showed similar trends; however, simulation-predicted incident heat fluxes were lower than measured. 4 ACKNOWLEDGEMENTSThis report concludes a multi-year study of the data from a suite of unique fire experiments. The authors would like to thank the following individuals for their participation in this effort.

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Section: (Feet)mentioning

confidence: 99%

Well-characterized open pool experiment data and analysis for model validation and development.

Sundberg¹,

Brown²,

Blanchat³

2006

View full text Add to dashboard Cite

show abstract

“…The Inconel sheath has been found to withstand the fire environment where other materials such as 304 stainless steel have not. Ultra-pure MgO insulation is required to avoid thermal shunting, an insidious problem that appears in long thermocouples routed through multiple zones of high and low temperature (Reed 1982) (Acton et al 1996). The use of ungrounded junctions with grounded sheathing minimizes electrical noise prevalent in thermocouple circuitry.…”

Section: Thermocouples and Thermocouple Treesmentioning

confidence: 99%

SNL Storage Facility Fire Environment Experiment Data for Model Validation and Development

Blanchat¹,

Gill²

2001

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The development of validated numerical tools to predict the thermal hazard posed by a fuel fire that results from an aircraft or ground transportation accident is a goal of the Fuel Fire Technology Base Program. These validated tools support Defense Threat Reduction Agency (DTRA) probabilistic Weapon System Safety Assessments (WSSA). Two types of tools are being developed to support this type of activity: (1) tools that model the detailed physics of the problem (e.g., fire field models); and (2) tools that model the dominant physical phenomena (e.g., the risk assessment compatible fire models (RACFMs)). RACFMs are tailored to be compatible with the methodology of a probabilistic WSSA. A large-scale fire testing program has been established to obtain experimental data to (1) develop and calibrate RACFMs, (2) validate and further develop fire field models, (3) assess the fire threat to actual systems of interest and, (4) provide archival data for future assessments. This report describes nine full-scale enclosure pool fire experiments (JPS fueled) that were conducted at the Sandia National Laboratories (SNL) Lurance Canyon Burn Site in the Building 9830 "Igloo" Facility. Experiment and hardware requirements, the test facility, instrumentation, and a complete description of each experiment are provided herein. The primary purpose of the test series was to furnish experimental data for validating compartment fire models that are being developed to predict the abnormal thermal environment in a storage facility/aircraft accident situation. Fires of interest in the storage and maintenance facilities are primarily hydrocarbon pool fires that could occur as a result of an aircraft engine penetrating the facility during an accident. The models, in turn, are to be used to assess the thermal hazard posed to stored weapons within the facility.

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An investigation of temperature measurement methods in nuclear power plant reactor pressure vessel annealing

Cited by 2 publications

References 3 publications

Well-characterized open pool experiment data and analysis for model validation and development.

Well-characterized open pool experiment data and analysis for model validation and development.

SNL Storage Facility Fire Environment Experiment Data for Model Validation and Development

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