Raftul cu initiativa Book Archive

Technique

Thermal Performance of High Burn-Up LWR Fuel: Seminar by OECD - Organisation for Economic Co-operation and

By OECD - Organisation for Economic Co-operation and Development

Right warmth removing from the gas is key for the secure operation of nuclear reactors used for electrical energy construction. As nuclear gas is burnt it undergoes vital alterations, together with a degradation of its thermal conductivity. this significant phenomenon has to be reliably estimated for you to make higher use of the gas, an element which could support to accomplish the industrial competitiveness required by means of brand new markets. This document communicates the result of a world seminar which reviewed fresh development within the box of nuclear gas thermal conductivity and sought to enhance the versions utilized in laptop codes predicting thermal functionality. cutting-edge wisdom is gifted for either uranium-oxide and mixed-oxide fuels loaded in water reactors.

Show description

Read Online or Download Thermal Performance of High Burn-Up LWR Fuel: Seminar Proceedings, Cadarache, France, 3-6 March 1998 PDF

Similar technique books

Woodworking Shopnotes 050 - Table Saw Workstation

Each web page of ShopNotes journal will make you a greater woodworker, since you get extra woodworking plans, extra woodworking options, extra woodworking jigs, and extra approximately woodworking instruments — and never a unmarried advert. For greater than 25 years, woodworkers have grew to become to ShopNotes for the main unique woodworking plans and woodworking counsel on hand at any place.

Specification for Line Pipe

API guides inevitably handle difficulties of a normal nature. With admire to specific situations, neighborhood, country, and federal legislation and laws might be reviewed. API isn't venture to fulfill the tasks of employers, brands, or providers to warn and correctly educate and equip their staff, and others uncovered, relating well-being and safeguard hazards and precautions, nor venture their responsibilities below neighborhood, kingdom, or federal legislation.

Advanced Information Systems Engineering: 9th International Conference, CAiSE'97 Barcelona, Catalonia, Spain, June 16–20, 1997 Proceedings

This ebook constitutes the refereed court cases of the ninth foreign convention on complicated info platforms Engineering, CAiSE'97, held in Barcelona, Spain, in June 1997. the amount provides 30 revised complete papers chosen from a complete of 112 submissions; additionally integrated is one invited contribution.

Elektronische Beschaffung: Stand und Entwicklungstendenzen (Business Engineering)

Praxis und Wissenschaft sind sich einig, dass die elektronische Beschaffung indirekter G? ter (Nicht-Produktionsmaterial) wenig Wettbewerbsvorteile schafft. Die weitaus gr? ?eren Herausforderungen und Einsparpotenziale liegen in der Beschaffung direkter G? ter (G? ter, die in die Leistungen eingehen).

Additional resources for Thermal Performance of High Burn-Up LWR Fuel: Seminar Proceedings, Cadarache, France, 3-6 March 1998

Sample text

As no irreversible sample changes were expected (or observed) the cause was attributed to changes in experimental conditions between runs. e. the faster the ramp rate the smaller the deviation). In developing the correction methods it is assumed that: i) the baseline shifts seen are due to slight changes in thermal resistance in the system, so that the sign of the correction term is the same, irrespective of whether it is applied to up-ramp or down-ramp data; ii) the baseline shifts observed are small enough so that they do not have a significant effect on the instrument sensitivity.

The thickness and weight of the samples are about 1 mm and 100 mg, respectively. The measured temperature range of the samples is from room temperature up to a maximum of 1794 K. As an example of the experimental results, the measured thermal diffusivity of sample No. 3 is depicted in Figure 2 together with the data of SIMFUEL [1], which simulates high burn-up UO2 chemically by adding soluble FPs. Four runs were repeated while increasing the maximum temperature of measurement. The thermal diffusivity of high burn-up UO2 was lower than half that of unirradiated UO2 at room temperature and the difference between them decreased as temperature increased.

To clarify the cause of thermal diffusivity scatter among the samples, the micro structure of the samples was examined. Extensive columnar grain growth and some metallic FP were observed in sample No. 3, which showed higher thermal diffusivity. On the other hand, columnar grain growth was not observed in sample No. 2. The cross-section of Rod 201, from which the samples are derived, is shown in Figure 5. 6. The power history of Rod 201 is depicted in Figure 6. The rod power was very high (510 W/cm) at the beginning of irradiation, and it decreased almost linearly with burn-up.

Download PDF sample

Rated 4.42 of 5 – based on 46 votes