License Application Design Selection Feature Report: Waste Package Self Shielding Design Feature 13
In the Viability Assessment (VA) reference design, handling of waste packages (WPs) in the emplacement drifts is performed remotely, and human access to the drifts is precluded when WPs are present. This report will investigate the feasibility of using a self-shielded WP design to reduce the radiation levels in the emplacement drifts to a point that, when coupled with ventilation, will create an acceptable environment for human access. This provides the benefit of allowing human entry to emplacement drifts to perform maintenance on ground support and instrumentation, and carry out performance confirmation activities. More direct human control of WP handling and emplacement operations would also be possible. However, these potential benefits must be weighed against the cost of implementation, and potential impacts on pre- and post-closure performance of the repository and WPs. The first section of this report will provide background information on previous investigations of the self-shielded WP design feature, summarize the objective and scope of this document, and provide quality assurance and software information. A shielding performance and cost study that includes several candidate shield materials will then be performed in the subsequent section to allow selection of two self-shielded WP design options for further evaluation. Finally, the remaining sections will evaluate the impacts of the two WP self-shielding options on the repository design, operations, safety, cost, and long-term performance of the WPs with respect to the VA reference design.
- Research Organization:
- Yucca Mountain Project, Las Vegas, NV (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC08-91RW00134
- OSTI ID:
- 752783
- Report Number(s):
- B00000000-01717-2200-00220, Rev. 00; MOL.19990311.0177, DC# 20869; TRN: US0301874
- Resource Relation:
- Other Information: PBD: 10 Mar 2000; PBD: 10 Mar 2000
- Country of Publication:
- United States
- Language:
- English
Similar Records
License Application Design Selection Enhanced Design Alternative V: Very High Thermal Loading
Viability Assessment of a Repository at Yucca Mountain. Volume 4: License Application Plan and Costs