4 x per Year Probability of Cccurrence Range and Type of Responses i n FAB-1 Area to 0.08 t o 0.16 g Ground Acceleration Levels, 3 x per Year Probability o f Occurrence Range and Type of Responses i n FAB-6 to 0.08-0.16 g Ground Acceleration Level, 3 x per Year Probability of Occurrence Range and Types of Responses in FABt o 0.20-0.29 g Ground Acceleration Level, 7.1 x 10-b per Year Probability of Occurrence Range and Types of Responses i n FA-6 t o 0.20 g-0.

The potential airborne releases of plutonium (source terms) from postulated damage sustained by the Westinghouse Plutonium Fuel Development Laboratories at the Cheswick site in Pennsylvania as a result of various levels of wind and seismic hazard are estimated. The source terms are based on damage scenarios originated by other specialists and range up to 260 mph for wind hazard and in excess of 0.39 g ground acceleration for seismic hazard. The approaches and factors used to estimate the source terms (inventories of dispersible materials at risk, damage levels and ratios, fractional airborne releases of dispersible materials under stress, atmosphere exchange rates, and source term ranges) are discussed. Source term estimates range from less than 10-7 g plutonium to greater than 130 g plutonium over a four-day period.

This report estimates the potential airborne releases of plutonium as a consequence of various severities of earthquake and wind hazard postulated for the 102 Building at the General Electric Vallecitos Nuclear Center in California. The releases are based on damage scenarios developed by other specialists. The hazard severities presented range up to a nominal velocity of 230 mph for wind hazard and are in excess of 0.8 g linear acceleration for earthquakes. The consequences of thrust faulting are considered. The approaches and factors used to estimate the releases are discussed. Release estimates range from 0.003 to 3 g Pu. iii v released with time (up to 4 days). The overall source terms for the damage scenarios evaluated are shown in Table 1 in the order of increasing severity of wind and earthquake hazard.

The potential airborne releases of plutonium from postulated damage sustained by the Exxon Nuclear Company's Mixed Oxide Fabrication Plant at Richland, Washington, as a result of various levels of wind and earthquake hazard, are estimated. The releases are based on damage scenarios that range up to 250 mph for wind hazard and in excess of 1.0 g ground acceleration for seismic hazard, which were developed by other specialists. The approaches and factors used to estimate the releases (inventories of dispersible materials at risk, damage levels and ratios, fractional airborne releases of dispersible materials under stress, atmosphere exchange rates, and source term ranges) are discussed. Release estimates range from less than 10-7 g to greater than 14 9 of plutonium over a four-day period.

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