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Understanding the Criticality Safety Index [Energy]: A Key Metric in Nuclear Safety
Definition & Meaning
The Criticality Safety Index (CSI) is a dimensionless number assigned to packages containing fissile material, which is materials capable of sustaining a nuclear fission chain reaction. This number is rounded up to the next tenth and is displayed on the package label. The CSI indicates the level of control required to prevent accidental criticality, which is the uncontrolled nuclear reaction that can occur when fissile materials are improperly accumulated during transportation.
Table of content
Legal Use & context
The Criticality Safety Index is primarily used in the field of nuclear safety and regulation. It is relevant in legal contexts concerning the packaging and transportation of radioactive materials, particularly in compliance with federal regulations set forth by the Nuclear Regulatory Commission (NRC). Legal practitioners may encounter this term in cases involving safety violations, transportation regulations, and environmental law. Users can manage related forms and compliance documentation using templates provided by US Legal Forms.
Key legal elements
Real-world examples
Here are a couple of examples of abatement:
For instance, a package containing uranium-235, a fissile material, might have a CSI of 2.0. This indicates that specific safety measures must be followed to prevent criticality during transport. If multiple packages are transported together, the total CSI must be considered to ensure safety regulations are met.
Relevant laws & statutes
The Criticality Safety Index is governed by regulations outlined in:
10 CFR 71 - Packaging and Transportation of Radioactive Material
Title 10 - Energy; Chapter I - Nuclear Regulatory Commission
Comparison with related terms
Term
Definition
Difference
Criticality
The state of a nuclear chain reaction being sustained.
CSI is a safety measure to prevent criticality.
Fissile Material
Material capable of sustaining a fission reaction.
CSI applies specifically to the packaging of fissile materials.
Common misunderstandings
What to do if this term applies to you
If you are involved in the transportation of fissile materials, ensure that you understand the Criticality Safety Index assigned to your packages. Familiarize yourself with the relevant regulations and consider using legal form templates from US Legal Forms to assist with compliance documentation. If you have complex questions or concerns, consulting a legal professional is advisable.
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