Nuclear Fuel Cycle Simulation System

The NFCSS is a computer simulation system which uses simplified approaches to calculate the fuel cycle requirements.

These simplified approaches enable the code to estimate the long-term fuel cycle requirements for both open and closed fuel cycle strategies.

The NFCSS web site provides a detailed description of the simulation system, an example scenario with results, and a simple calculation tool which can be used to calculate annual material flow in a selected nuclear fuel cycle option.

The web site also provides access to the full version of the code through a special authorization.

Quality LevelExplanation of Terms

• Authoritative: All information in the resource has been verified by authorities as indicated.
• Quality-checked: All information in the resource has been quality-checked as indicated.
• Not quality-checked: Although the information in the resource may come from peer-reviewed journals or other high-quality sources, it has not undergone subsequent quality checking before incorporation in the resource.

: Quality-checked by the IAEA Secretariat and contracted experts
CompletenessExplanation of Terms

• Comprehensive:The resource includes all items in the category for which the resource was created.
• Selective: The resource includes only selected items in the category for which the resource was created, with the process or basis for the selection as indicated.

: Selective - the software includes all steps in the fuel cycle, but only for currently commercially viable fuel cycles and not in extreme detail
Update FrequencyExplanation of Terms

• Updated continually: A conscientious effort is made to add new information immediately and keep the resource up-to-date on a day-by-day basis.
• Updated periodically: The resource is updated on a schedule. Common values are monthly, quarterly, annually or biennially, but others are also used.
• Updated occasionally: The resource is updated now and then, but not on a schedule.
• Static: The resource is a one-off creation with no plans for updates, or a resource that was updated in the past but has now been frozen with no new input planned.

: Occasionally