CALIBRATION OF ORNL LID-TANK FISSION PLATES
The SP-2 fission plate in the ORNL Lid Tank Shielding Facility was calibrated on three occasions and these data were used for a retrospective reclibration of SP-1, whose nonuniform geometry made its original, calibration suspect. The three independent calibration experiments performed to determine the fission rate in SP-2 were: thermalneutron flux and utilization; neutron- generation rate; and heat-generation rate. A weighted average of these methods gives a fission rate of 1.62 x 10" plus or minus 5% fissions/sec of equivalent to 5.18 plus or minus 5% watts of reactor power. The weighted average effective source strengths of LTSF fission plates are 1.7 and 1.14 watts for neutrons ard gamas in SP-I and 4.87 and 4.56 watts in SP-2. The large difference in the effective power of SP-1 is attributed to encessive self-absorption of gammas by the thick SP-1 components. (B.O.G.)
- Research Organization:
- Pratt and Whitney Aircraft Div., United Aircraft Corp., Middletown, Conn.; Convair, San Diego, Calif.
- NSA Number:
- NSA-14-013409
- OSTI ID:
- 4191916
- Journal Information:
- Nucleonics (U.S.) Ceased publication, Vol. Vol: 18, No. 4; Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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