Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1

Thumbnail image of item number 1 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.
Thumbnail image of item number 2 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.
Thumbnail image of item number 3 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.
Thumbnail image of item number 4 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.
Showing 1-4 of 73 pages in this report.

PDF Version Also Available for Download.

Description

Slightly enriched UO/sub 2/ fuel, irradiated in the Vallecitos Boiling Water Reactor (VBWR), with exposures ranging from 100 Mwd/t to 3200 Mwd/t was analyzed for heavy element isotopic composition and compared with computed data. The primary objective of this program is to obtain improved data on the changes in nuclear characteristics with burnup of UO/sub 2/ fuel in a boiling water reactor. This information is important in both evaluating the economics of a given reactor design and also in providing a sounder physics basis for improving reactor designs to minimize the resuiting fuel costs. Uranium oxide pellets, with an enrichment … continued below

Creation Information

Hackney, M. R. & Ruiz, C. P. December 28, 1962.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 14 times. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Authors

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

About | Browse this Partner

Contact Us

Corrections Questions

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

Slightly enriched UO/sub 2/ fuel, irradiated in the Vallecitos Boiling Water Reactor (VBWR), with exposures ranging from 100 Mwd/t to 3200 Mwd/t was analyzed for heavy element isotopic composition and compared with computed data. The primary objective of this program is to obtain improved data on the changes in nuclear characteristics with burnup of UO/sub 2/ fuel in a boiling water reactor. This information is important in both evaluating the economics of a given reactor design and also in providing a sounder physics basis for improving reactor designs to minimize the resuiting fuel costs. Uranium oxide pellets, with an enrichment of 2.8 atom percent, were analyzed at several axial positions along the fuel rod, spanning the void (steam fraction) range of 0 to 30%. The isotopic composition for each pellet was computed, utilizing a general fuel cycle depletion code. Results of the analysis of the comparison of the measured and computed data indicate that the total amount of Pu computed is consistently lower than that implied from the measurement by approximately 10%, and the percentage difference between the measured and computed data increases slightly with exposure. One rod was irradiated near a control rod which was approximately 25% inserted. As expected, since no control rod effects were included in the calcuiation, the measured data in that region of the rod shows a greater Pu production per Mwd/t than computed. Physical effects which might explain the small, but apparentiy consistent, differences between the measured and computed data were postulated. It is concluded that the observed differences are the result of a substantial underestimate of void fraction and small uncertainties in fuel exposure and cross sections. (auth)

Notes

Other Information: Orig. Receipt Date: 31-DEC-63

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

About | Browse this Collection

What responsibilities do I have when using this report?

Digital Files

When

Dates and time periods associated with this report.

Creation Date

  • December 28, 1962

Added to The UNT Digital Library

  • Oct. 18, 2017, 7:39 a.m.

Description Last Updated

  • Nov. 22, 2024, 10:49 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 14
More Statistics

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.
Thumbnail image of item number 2 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.
Thumbnail image of item number 3 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.
Thumbnail image of item number 4 in: 'Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Links for Robots

Helpful links in machine-readable formats.

Archival Resource Key (ARK)

International Image Interoperability Framework (IIIF)

Metadata Formats

Images

URLs

Stats

Hackney, M. R. & Ruiz, C. P. Heavy Element Isotopic Analysis of UIO$sub 2$ Fuel Irradiated in the VBWR. Report No. 1, report, December 28, 1962; San Jose, California. (https://digital.library.unt.edu/ark:/67531/metadc1033790/: accessed September 10, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

Back to Top of Screen