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CX-012175: Categorical Exclusion Determination

Isolate Old 294-H Sand Filter
CX(s) Applied: B2.5
Date: 04/14/2014
Location(s): South Carolina
Offices(s): Savannah River Operations Office

A Potential Inadequacy in the Safety Analysis (PI-2013-0020) has indicated that open penetrations in the H Canyon exhaust tunnel could result in a ground level release of Canyon (sand filtered) air following: 1) a PC2 seismic event and 2) the collapse of the 291-H stack liner. To resolve the PISA, several modifications will be completed which will seal the known penetrations between the H Canyon exhaust fans and the 291-H stack discharge.