Computational Fluid Dynamics (CFD) Analyses of a Glovebox Under Glove Loss Conditions.

摘要

It is stated in the American Glovebox Society (AGS) publications AGS-G001-2007, Guideline for Gloveboxes, and AGS-G006-2005, Standard of Practice for the Design and Fabrication of Nuclear-Application Gloveboxes, that an inward-flowing face-velocity of 125 plus or minus 25 linear ft/min be maintained when an access port is opened or if there is a credible breach of a glovebox (e.g., due to loss of a glove). This value for face velocity was chosen based on historical information (See Section 2, Appendix, for more details). Several users of the two AGS documents listed above have questioned this value. In particular, several users have asked if face velocities less than 100 linear ft/min are acceptable. As a result of these inquiries, the technical bases for this AGS-specified requirement were investigated. This investigation is summarized in the appendix. The results of this investigation indicated, that although this face velocity requirement is cited in many standards, there is a need to provide more theoretically fundamental bases for the value given by this requirement. In order to meet this need, CFD analyses were performed considering several different open gloveport conditions. The following sections describe these analyses including results and conclusions.