Decommissioning Materials Management
E. M. Goldin, K. C. Yhip, M. J. Russell
Decommissioning projects may be simplistically separated into those that have above ground structures in place (industrial) and those that remove all above ground structures (greenfield). In either case, the regulations for radioactive materials license termination in 10 CFR Part 20 provide for residual radioactivity levels that are distinguishable from background if the resulting dose to a member of the public is no more than 25 mrem (0.25 mSv) per year. Under a greenfield scenario, buildings with low levels of radioactivity that could remain under the license termination regulations would be disposed of as low level radioactive waste, resulting in a larger volume requiring disposal at a licensed facility. The costs for disposal of low level radioactive waste are high compared to municipal waste disposal. As such, cost estimates for decommissioning may differ significantly depending on whether the desired product is a greenfield site or one that with some above ground structures. We will present representative data to show how these different decommissioning approaches can affect project cost estimates.
This abstract was presented at the 34th Annual Midyear Meeting, "Radiation Safety and ALARA Considerations for the 21st Century", Decommissioning Session, 2/4/2001 - 2/7/2001, held in Anaheim, CA.