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An Assessment of Fission Product Scrubbing in Sodium Pools Following a Core Damage Event in a Sodium Cooled Fast Reactor

Jun 27, 2017, 5:30 PM
1h 30m
Poster Area (Yekaterinburg)

Poster Area

Yekaterinburg

POSTER Track 3. Fast Reactor Safety Poster Session 1

Speaker

Dr Matthew Bucknor (Argonne National Laboratory)

Description

The U.S. Nuclear Regulatory Commission has stated that mechanistic source term (MST) calculations are expected to be required as part of the advanced reactor licensing process. A recent study by Argonne National Laboratory has concluded that fission product scrubbing in sodium pools is an important aspect of an MST calculation for a sodium cooled fast reactor (SFR). To model the phenomena associated with sodium pool scrubbing, a computational tool has been developed. This tool was developed by applying classical theories of aerosol scrubbing, developed for the case of isolated bubbles rising through water, to the decontamination of gases produced as a result of a postulated core damage event in an SFR. The model currently considers aerosol capture by Brownian diffusion, inertial deposition, and gravitational sedimentation. The effects of sodium vapor condensation on aerosol scrubbing are also treated. This paper provides details of a parametric study performed to determine key modeling uncertainties and sensitivities.

Country/Int. Organization

USA/Argonne National Laboratory

Primary author

Dr Matthew Bucknor (Argonne National Laboratory)

Co-authors

Dr David Grabaskas (Argonne National Laboratory) Dr Mitchell Farmer (Argonne National Laboratory)

Presentation materials