Medical Isotope Production Without Highly Enriched Uranium (2009) / Chapter Skim
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9 Conversion to LEU-Based Production of Molybdenum-99: General Approaches and Timing
9 Conversion to LEU-Based Production of Molybdenum-99: General Approaches and Timing
Pages 108-113
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From page 108... ...
For the purposes of this discussion, a "processing facility" is a f acility that contains hot cells and ancillary support equipment to receive and process irradiated LEU targets (see Chapter 2) , recover and purify Mo-99, and manage wastes.
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From page 109... ...
This conversion was possible for two reasons: First, conversion did not require substantial changes to existing target dissolution and Mo-99 recovery processes; consequently, substantial equipment modifications were not required. Second, CNEA produces Mo-99 only once a week, and so there was sufficient hot cell down time to perform the necessary process development and conversion work.
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From page 110... ...
could likely convert using this approach. Greenfield Construction Greenfield construction is advantageous primarily because it would not interfere with current Mo-99 production activities, and also because the new facilities can be custom-designed to meet current and projected future Mo-99 production needs.
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From page 111... ...
Hot commissioning of the processing line would normally be carried out once the reactor is operational and the first targets are irradiated. The time interval between the start of construction and commissioning of reactors built during the past two decades (e.g., Egyptian Testing R esearch Reactor II [ETRR2]
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From page 112... ...
Brownfield Conversion Brownfield conversion shares some similarities with the second case for a Greenfield construction, except that the processing facility already exists. The time required to convert the facility is probably less than building a new facility from scratch.
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From page 113... ...
The time required for a Brownfield conversion will depend on the nature of that conversion. If the conversion requires the refurbishment of existing hot cells, it could require as little as 1–2 years once the process development work is completed.
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