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

1 Revisions
NSTR-011-98. Safety Analysis for the Building 991 Complex FSAR, Revision 2
Executive
summary
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Updated to incorporate changes made to document
Nochangesmade.
Atiachment 4
MW-I 19-99
September IS, 1999
Page 3 of 3
Updated to incorporate the B776/777 BIO approach for determining dose consequences to
the IW.
Updated Table 6 1 to clarifj that the WG Pu equivalent gram loading used for Type B
containers is an assumption of the analysis and is not a control that should be specified in the
TSRs.
Updated appropriate accident scenarios based on new approach for qualitatively evaluating
the dose consequences to the JW.
Specifically credited the automatic sprinkler system, flow aldfire department response,
smoke detectoxdfire department response for Facility Fire 2.
Specifically credited the flow alWfire department response for Facility Fire 4.
Added Features F26 and F27 for the flow alarmdike department response and smoke
detectoxdfire department response.
Updated accident scenario summary tables based on changes to the accident scenarios.
Added discussion to reduce the likelihood of a puncture of a Type B or POC to Beyond
Extremely Unlikely.
Added discussion concerning the solubility class for the POC puncture evaluation
Enhanced discussion on number of drums that could be breached from a facility explosion
event.
Added accident scenario for a heaw snow event-induced mill. No new controls identified.
Updated Risk Dominant Accident Scenario discussion. Used this d o n to formally credit
the building’s filtered exhaust ventilation system. By crediting the filtered exhaust
ventilation system and using the B776/777 BIO IW dose consequence approach, the number
of risk dominant accident scenarios was reduced from 5 to 3.
Updated Table 110 to add all scenarios for the applicable assumption/feature/requhement.