Standard Swedish standard · SS-ISO 11311:2011

Nuclear criticality safety - Critical values for homogeneous plutonium-uranium oxide fuel mixtures outside of reactors (ISO 11311:2011, IDT)

Status: Valid

· Amended by: SS-ISO 11311:2011/Amd 1:2022
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Standard Swedish standard · SS-ISO 11311:2011

Nuclear criticality safety - Critical values for homogeneous plutonium-uranium oxide fuel mixtures outside of reactors (ISO 11311:2011, IDT)
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Scope
This International Standard specifies common reference critical values (of which the effective neutron multiplication factor, keff is equal to 1) for homogeneous water-moderated plutonium-uranium oxide mixtures based on an inter-code comparison of calculated critical values. It is applicable to operations with unirradiated mixed uranium-plutonium oxide (MOX) outside nuclear reactors.A classical validation approach for these systems is difficult because of the paucity of critical experiments for MOX fuel. Various reference systems, in terms of isotopic compositions, thicknesses of water reflection, and densities of oxide are evaluated by different combinations of calculation codes and nuclear data libraries (i.e. different calculation schemes, see Annex B). The critical values defined in this International Standard are the lowest of those calculated by each of these calculation schemes and accepted as credible. The values in this International Standard are reference values and not absolute critical values.

Subjects

Fissile materials (27.120.30)


Buy this standard

Standard Swedish standard · SS-ISO 11311:2011

Nuclear criticality safety - Critical values for homogeneous plutonium-uranium oxide fuel mixtures outside of reactors (ISO 11311:2011, IDT)
Subscribe on standards - Read more Dölj
Price: 1 516 SEK
standard ikon pdf

PDF

Price: 1 516 SEK
standard ikon

Paper

Price: 2 425,60 SEK
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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-80904

Edition: 1

Approved: 7/20/2011

No of pages: 28