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U.S. Department of Energy
Office of Scientific and Technical Information

HAZARDS SUMMARY REPORT FOR THE LRL CRITICAL FACILITY

Technical Report ·
OSTI ID:4052408
The Lawrence Radiation Laboratory has, since 1952, operated a critical facility at the Livermore Site. The two original assembly vaults are still in continuous operation in support of the weapons and propulsion reactor programs of the laboratory. An additional critical assembly cell was recently completed to provide more facilities for critical assembly measurements. This cell is unusual in that it is in a containment building which can be sealed to prevent release of any radioactive or toxic material to the atmosphere. Typical moderated and unmoderated core assemblies are explained and analyzed to demonstrate the procedures at the LRL critical facility. Credible accidents are shown to be less than lO/sup 1//sup 8/ fissions for these systems. The safety features of both the old and new cells are shown to have an adequate margin to contain all consequences of such accidents, including prompt and delayed radiation, fission products, and any dispersed core material. (auth)
Research Organization:
California. Univ., Livermore. Lawrence Radiation Lab.
DOE Contract Number:
W-7405-ENG-48
NSA Number:
NSA-15-020980
OSTI ID:
4052408
Report Number(s):
UCRL-6220
Country of Publication:
United States
Language:
English