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Title: A model for radionuclide transport in the Cooling Water System

Abstract

A radionuclide transport model developed to assess radiological levels in the K-reactor Cooling Water System (CWS) in the event of an inadvertent process water (PW) leakage to the cooling water (CW) in the heat exchangers (HX) is described. During and following a process water leak, the radionuclide transport model determines the time-dependent release rates of radionuclide from the cooling water system to the environment via evaporation to the atmosphere and blow-down to the Savannah River. The developed model allows for delay times associated with the transport of the cooling water radioactivity through cooling water system components. Additionally, this model simulates the time-dependent behavior of radionuclides levels in various CWS components. The developed model is incorporated into the K-reactor Cooling Tower Activity (KCTA) code. KCTA allows the accident (heat exchanger leak rate) and the cooling tower blow-down and evaporation rates to be described as time-dependent functions. Thus, the postulated leak and the consequence of the assumed leak can be modelled realistically. This model is the first of three models to be ultimately assembled to form a comprehensive Liquid Pathway Activity System (LPAS). LPAS will offer integrated formation, transport, deposition, and release estimates for radionuclides formed in a SRS facility. Process watermore » and river water modules are forthcoming as input and downstream components, respectively, for KCTA.« less

Authors:
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10147882
Report Number(s):
WSRC-TR-92-261
ON: DE93012149
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Aug 1992
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; K REACTOR; LOSS OF COOLANT; FISSION PRODUCT RELEASE; RADIATION TRANSPORT; RADIOACTIVITY TRANSPORT; K CODES; COOLING TOWERS; LEAKS; REACTOR SAFETY; RADIOACTIVE EFFLUENTS; REACTOR COOLING SYSTEMS; HEAT EXCHANGERS; 220502; 220600; 220900; RESEARCH, TEST, TRAINING, PRODUCTION, IRRADIATION, MATERIALS TESTING REACTORS

Citation Formats

Kahook, S D. A model for radionuclide transport in the Cooling Water System. United States: N. p., 1992. Web. doi:10.2172/10147882.
Kahook, S D. A model for radionuclide transport in the Cooling Water System. United States. https://doi.org/10.2172/10147882
Kahook, S D. 1992. "A model for radionuclide transport in the Cooling Water System". United States. https://doi.org/10.2172/10147882. https://www.osti.gov/servlets/purl/10147882.
@article{osti_10147882,
title = {A model for radionuclide transport in the Cooling Water System},
author = {Kahook, S D},
abstractNote = {A radionuclide transport model developed to assess radiological levels in the K-reactor Cooling Water System (CWS) in the event of an inadvertent process water (PW) leakage to the cooling water (CW) in the heat exchangers (HX) is described. During and following a process water leak, the radionuclide transport model determines the time-dependent release rates of radionuclide from the cooling water system to the environment via evaporation to the atmosphere and blow-down to the Savannah River. The developed model allows for delay times associated with the transport of the cooling water radioactivity through cooling water system components. Additionally, this model simulates the time-dependent behavior of radionuclides levels in various CWS components. The developed model is incorporated into the K-reactor Cooling Tower Activity (KCTA) code. KCTA allows the accident (heat exchanger leak rate) and the cooling tower blow-down and evaporation rates to be described as time-dependent functions. Thus, the postulated leak and the consequence of the assumed leak can be modelled realistically. This model is the first of three models to be ultimately assembled to form a comprehensive Liquid Pathway Activity System (LPAS). LPAS will offer integrated formation, transport, deposition, and release estimates for radionuclides formed in a SRS facility. Process water and river water modules are forthcoming as input and downstream components, respectively, for KCTA.},
doi = {10.2172/10147882},
url = {https://www.osti.gov/biblio/10147882}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Aug 01 00:00:00 EDT 1992},
month = {Sat Aug 01 00:00:00 EDT 1992}
}