National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Technical Bases for Estimating Fission Product Behavior during LWR Accidents.

NUREG0772

Publication Date	1981
Page Count	350
Abstract	The objective of this report is to provide the Nuclear Regulatory Commission and the public with a description of the best technical information currently available for estimating the release of radioactive material during postulated reactor accidents, and to identify where gaps exist in our knowledge. This report focuses on those low probability-high consequence accidents involving severe damage to the reactor core and core meltdown that dominate the risk to the public. Furthermore, in this report particular emphasis is placed on the accident behavior of radioactive iodine, as (1) radioiodine is predicted to be a major contributor to public exposure, (2) current regulatory accident analysis procedures focus on iodine, and (3) several technical issues have been raised recently about the magnitude of iodine release. The generation, transport, and attenuation of aerosols were also investigated in some detail to assess their effect on fission product release estimates and to determine the performance of engineered safety features under accident conditions exceeding their design bases.
Keywords	Nuclear reactor accidents Iodine isotopes Cesium isotopes Fission product release Light water reactors
Source Agency	Nuclear Regulatory Commission
NTIS Subject Category	77G - Radioactive Wastes & Radioactivity
Corporate Authors	Nuclear Regulatory Commission, Washington, DC.
Supplemental Notes	Prepared in cooperation with Battelle Columbus Labs., OH., Oak Ridge National Lab., TN., and Sandia National Labs., Albuquerque, NM.
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	198123

Technical Bases for Estimating Fission Product Behavior during LWR Accidents.

Technical Bases for Estimating Fission Product Behavior during LWR Accidents.
NUREG0772

Publication Date	1981
Page Count	350
Abstract	The objective of this report is to provide the Nuclear Regulatory Commission and the public with a description of the best technical information currently available for estimating the release of radioactive material during postulated reactor accidents, and to identify where gaps exist in our knowledge. This report focuses on those low probability-high consequence accidents involving severe damage to the reactor core and core meltdown that dominate the risk to the public. Furthermore, in this report particular emphasis is placed on the accident behavior of radioactive iodine, as (1) radioiodine is predicted to be a major contributor to public exposure, (2) current regulatory accident analysis procedures focus on iodine, and (3) several technical issues have been raised recently about the magnitude of iodine release. The generation, transport, and attenuation of aerosols were also investigated in some detail to assess their effect on fission product release estimates and to determine the performance of engineered safety features under accident conditions exceeding their design bases.
Keywords	Nuclear reactor accidents Iodine isotopes Cesium isotopes Fission product release Light water reactors
Source Agency	Nuclear Regulatory Commission
NTIS Subject Category	77G - Radioactive Wastes & Radioactivity
Corporate Authors	Nuclear Regulatory Commission, Washington, DC.
Supplemental Notes	Prepared in cooperation with Battelle Columbus Labs., OH., Oak Ridge National Lab., TN., and Sandia National Labs., Albuquerque, NM.
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	198123