... of possible waste characteristics. This paper, as the third of the series, describes the behavior of anhydrite layers above and below the disposal room. Although room closure is dominated by salt deformation, the physical and mechanical properties of anhydrite stringers in the vicinity of openings have...

... Abstract The disturbed rock zone (DRZ) is an important feature which is evaluated in the Waste Isolation Pilot Plant (WIPP) performance assessment (PA) to predict post-closure repository performance. Mining of a WIPP disposal room disturbs the stress state sufficiently to cause fracturing...

... on the floor of disposal rooms. The remainder of the waste is designated remote handled or RH waste. RH waste emits more radiation than CH waste and must be handled and transported in shielded canisters. The canisters will be emplaced in 76 cm (30 in) diameter horizontal boreholes drilled into the walls...

... waste closure disposal room certification configuration puck 55-gallon drum sandia national laboratory waste package porosity surface ARMA/USRMS 06-1170 WIPP Disposal Room Closure Calculations for Various Waste Inventories Park, B.Y. Sandia National Laboratories, Carlsbad, New Mexico, USA...

..., solid production, and room closure, which pertain to the evolution of the WIPP disposal rooms. The initial sections develop the scientific basis supporting an updated view of these five elements with respect to model representations of room evolution. The paper concludes with recommendations...

... of the porosity in the waste-filled disposal rooms. Initially, the waste is modeled as a highly porous material that deforms easily as the bedded salt formation hosting the repository slowly closes the disposal rooms and transfers load to the waste. The disposal room porosity varies with time because...

... the presence of the RH boreholes and waste could cause the disposal rooms to become unstable before panel closure. The work presented here was completed for the United States Department of Energy (DOE), which was authorized by Public Law 96-164 to provide a research and development facility for demonstrating...

..., an underground repository for disposal of TRU wastes located 650 meters deep in a bedded halite formation. In its final configuration, WIPP will include eight panels of seven waste disposal rooms each. The rooms are about 90 meters long, 10 meters wide, and four meters high. They are separated by 30 meter wide...

... ABSTRACT: This paper presents the results of a set of structural analyses performed to investigate the effects of internal gas generation on the extension of pre-existing fractures around disposal rooms at the Waste Isolation Pilot Plant. The response of a room and its contents is computed...

... ABSTRACT: A structural finite element analysis is presented that examines the effect of internal gas generation on the response of a perfectly sealed disposal room mined from a bedded salt formation. The gas pressure build-up inside of the room, the stress field in the salt formation...

... ABSTRACT: Two-dimensional finite element analyses were used to investigate the closure of WIPP disposal rooms filled with backfill and rooms filled with a combination of waste and backfill. Two different backfill materials were considered. The analyses provide estimates of the porosity...

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