Experimental Determination of the 12 rad Line Around Bldg 332 from a Maximum Credible Criticality Accident
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
ANSI standard ANSI/ANS-8.3-1986 specified the areas that do not have to be included in the criticality alarm evacuation. Section 4.2.2 of this standard states, "A criticality alarm system is not required by this standard in areas where the maximum foreseeable absorbed dose in free air will not exceed 12 rad. For the purpose of this evaluation a maximum yield may be assumed not to exceed 2 x E19 fissions for events outside reactor cores". The B332 SAR and the site-wide EIS/EIR (DOE, 1992d) have determined that the maximum credible criticality yield in this report. During the test of the criticality alarm system in Bldg 332 on March 18,1995, we also obtained data outside the building to be used to determine the location of the 12 rad line. These results have been analyzed and we have prepared a drawing showing the location of the 12 rad line around Bldg 332.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- W-7405-ENG-48; AC52-07NA27344
- OSTI ID:
- 1090817
- Report Number(s):
- LLNL-TR-642028
- Country of Publication:
- United States
- Language:
- English
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