Table of Contents
1Scope
2Definitions
2.1Limitations
2.2Shall,shouldandmay
2.3Glossaryofterms
3Generalrequirements
3.1Physicalenvironment
3.1.1Mechanicalenvironment
3.1.2Radiationenvironment
3.2Chemicalenvironment
3.2.1Near-neutralenvironment
3.2.2Acidicenvironment
3.2.3Basicenvironment
4Ringspecifications
4.1Composition
4.1.1Typeofglass
4.1.2Densityofglass
4.1.310Bcontentofglass
4.2Ringdiameter
4.3Surfacefinish
4.4Chemical
4.5Mechanical
5Specificationsforpackedvessels
5.1Installationofrings
5.2Unpackedpipinginvessels
5.3Determinationofringlevel
5.4Determinationofglassvolumefraction
5.5Allowablevolumeofsolutioninavesselpacked
withrings
6Maximumspecifiedconcentrationsoffissile
solutions
7Maintenanceinspection
7.1Settling
7.2Fissilesolids
7.3Physicalproperties
7.4Inspectionintervals
8References
Appendix
Table
Table1Maximumpermissibleconcentrationsofsolutionsof
fissilematerialinvesselsofunlimitedsize
packedwithBorosilicate-glassraschigrings Abstract
Gives guidance for the use of borosilicate-glass Raschig rings as a neutron absorber for criticality control in ring-packed vessels containing solutions of 235U, 239Pu, or 233U.
