closure project manager - Document Request - U.S. Department of ...

The immediate worker analysis is insensitive to analysis assumptions or credited controls
due to the impact of the earthquake on the facility and the corresponding mockrate radiological
consequences to the immediate worker as a result of the falling debris incatmitatin? the nl:
The level of earthquake that is postulated would have similar effects on workers in most other
buildings, on or off the Site.
The risk from accident scenarios that were not risk dominant scenarios (i.e.. low nsk
scenarios: Risk Class TI1 or IV for all recemors) can be lowered. in manv cases. as a result of the
crediting of a single - tested stage of HEPA filtration for mitigation of risk dominant accident
scenarios. Some other risk reduction measures that may not be necessaw from a nuclear safeti
permective, should be included. where wssibie. EX~DICS include: (1) use of flammable gas
cylinders with caDacities or loaded to levels that are limited to a level necessq for the
maintenance advitv being performed and (2) preferential storage of POC containers rather than
Revision
Swtmnber 1'999
4-40 Building991 Complcx FSAR