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U.S. Department of Energy
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GAMMA-RAY DOSE AND HEAT GENERATION RATES ABOVE THE HNPF REFERENCE CORE DESIGN

Technical Report ·
OSTI ID:4695910
Gamma-ray dose and heat generation rates through the Hallam Power Reactor loading face shield for the reference design core operating at 254 Mw are measured. The top shield is considered imperforate for this analysis, and no account is taken of neutron and gamma-ray streaming between gaps around plugs, through steel casings, and through control and safety rod penetrations. The results indicate a gamma-ray dose rate at the lower steel surface of the loading face shield of 8 x 10/sup 5/ r/hr and a heat generation rate of 1.3 x 10/sup -9/ w/g. At the upper surface of the 5-ft thick ironlimonite concrete shield, the heat generation rate is negligible, and the dose rate is only 7 x 10/sup -3/ mr/ hr, corresponding to slightly less than 0.001 maximum permissible level. Due to inaccuracies in the method and data used and uncertainties in the assumptions, it is estimated that the results should be accurate to within a factor of four. (N.W.R.)
Research Organization:
Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.
DOE Contract Number:
AT(11-1)-GEN-8
NSA Number:
NSA-17-031731
OSTI ID:
4695910
Report Number(s):
NAA-SR-Memo-2908
Country of Publication:
United States
Language:
English