Preclosure radiological safety analysis for accident conditions of the potential Yucca Mountain Repository: Underground facilities; Yucca Mountain Site Characterization Project

Methodology for Radiological Risk Assessment of Deep Borehole Disposal Operations

“…Where compartmentalization of systems (into subsystems) is used to simplify the analysis of risk, the effect of a particular hazard should be followed by consideration of the resulting effects on or contributions from other subsystems (Ma et al 1992). For example, off-normal events during emplacement of waste packages could potentially degrade processes used to retrieve them.…”

Preclosure Safety Analysis Guide

“…When a predetermined number of newly excavated emplacement drifts are ready for waste emplacement, the isolation airlocks are moved to include the newly developed drifts in the emplacement area. Reference- Jackson et al 1984, MacDougall et al 1987, Hartman and Miller 1991, Ma et al 1992, Schelling and Smith 1993, and applicable system description and design documents. …”