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Title: CALIBRATION OF ORNL LID-TANK FISSION PLATES

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:
;
Publication Date:
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

Citation Formats

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