Planning for the TMI-2 reactor coolant system decontamination

Planning for the decontamination of the TMI-2 reactor coolant system is controlled by means of a work breakdown structure. The objectives of the reactor coolant system decontamination have yet to be determined, but the planning is proceeding on the basis that the reactor is to be defueled, requalified, and restarted and that the objective of the decontamination is the removal of fission product contamination, corrosion product contamination and fuel fines. The decontamination is to be performed on a system-by-system basis and the logic for this decision is presented. A discussion is also provided of the logic used to categorize systems into being decontaminated before or after reactor building decontamination, etc. Criteria are presented which can be used to determine the specific order in which the systems within a category should be decontaminated. The detailed decontamination sequences have yet to be completed, but items to be considered are presented