CALIBRATION OF ORNL LID-TANK FISSION PLATES

Title: CALIBRATION OF ORNL LID-TANK FISSION PLATES

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Abstract

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.)

Authors:: McCool, W J; Otis, D R

Publication Date:: 1960-04-01

Research Org.:: Pratt and Whitney Aircraft Div., United Aircraft Corp., Middletown, Conn.; Convair, San Diego, Calif.

OSTI Identifier:: 4191916

NSA Number:: NSA-14-013409

Resource Type:: Journal Article

Journal Name:: Nucleonics (U.S.) Ceased publication

Additional Journal Information:: Journal Volume: Vol: 18, No. 4; Other Information: Orig. Receipt Date: 31-DEC-60

Country of Publication:: Country unknown/Code not available

Language:: English

Subject:: PHYSICS; ABSORPTION; CONFIGURATION; FISSION; GAMMA RADIATION; GAMMA SOURCES; HEATING; LIFETIME; MULTIPLICATION FACTORS; NEUTRON FLUX; NEUTRON SOURCES; PLATES; POWER; STANDARDS; THERMAL NEUTRONS; THERMAL UTILIZATION; THICKNESS

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                    McCool, W J, and Otis, D R. CALIBRATION OF ORNL LID-TANK FISSION PLATES.  Country unknown/Code not available: N. p., 1960. 
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                    McCool, W J, & Otis, D R. CALIBRATION OF ORNL LID-TANK FISSION PLATES.  Country unknown/Code not available.

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                    McCool, W J, and Otis, D R. Fri .  
        "CALIBRATION OF ORNL LID-TANK FISSION PLATES".  Country unknown/Code not available.

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@article{osti_4191916,

  title        = {CALIBRATION OF ORNL LID-TANK FISSION PLATES},

  author       = {McCool, W J and Otis, D R},

  abstractNote = {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.)},

  doi          = {},

  url          = {https://www.osti.gov/biblio/4191916},
  journal      = {Nucleonics (U.S.) Ceased publication},
number       = ,

  volume       = Vol: 18, No. 4,

  place        = {Country unknown/Code not available},

  year         = {1960},

  month        = {4}

}

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