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Title: HTGR-GT primary coolant transient resulting from postulated turbine deblading

Abstract

The turbomachine is located within the primary coolant system of a nuclear closed cycle gas turbine plant (HTGR-GT). The deblading of the turbine can cause a rapid pressure equilibration transient that generates significant loads on other components in the system. Prediction of and design for this transient are important aspects of assuring the safety of the HTGR-GT. This paper describes the adaptation and use of the RATSAM program to analyze the rapid fluid transient throughout the primary coolant system during a spectrum of turbine deblading events. Included are discussions of (1) specific modifications and improvements to the basic RATSAM program, which is also briefly described; (2) typical results showing the expansion wave moving upstream from the debladed turbine through the primary coolant system; and (3) the effect on the transient results of different plenum volumes, flow resistances, times to deblade, and geometries that can choke the flow.

Authors:
;
Publication Date:
Research Org.:
General Atomic Co., San Diego, CA (USA)
OSTI Identifier:
6688669
Report Number(s):
GA-A-16027; CONF-810309-3
TRN: 81-002985
DOE Contract Number:  
AT03-76SF70046
Resource Type:
Conference
Resource Relation:
Conference: ASME gas turbine conference, Houston, TX, USA, 9 Mar 1981
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; GAS TURBINES; FAILURES; HTGR TYPE REACTORS; REACTOR SAFETY; COMPUTER CODES; HELIUM COOLED REACTORS; PRIMARY COOLANT CIRCUITS; R CODES; TRANSIENTS; TURBINE BLADES; COOLING SYSTEMS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; MACHINERY; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; SAFETY; TURBINES; TURBOMACHINERY; 220900* - Nuclear Reactor Technology- Reactor Safety; 210300 - Power Reactors, Nonbreeding, Graphite Moderated

Citation Formats

Cadwallader, G. J., and Deremer, R. K. HTGR-GT primary coolant transient resulting from postulated turbine deblading. United States: N. p., 1980. Web.
Cadwallader, G. J., & Deremer, R. K. HTGR-GT primary coolant transient resulting from postulated turbine deblading. United States.
Cadwallader, G. J., and Deremer, R. K. 1980. "HTGR-GT primary coolant transient resulting from postulated turbine deblading". United States. https://www.osti.gov/servlets/purl/6688669.
@article{osti_6688669,
title = {HTGR-GT primary coolant transient resulting from postulated turbine deblading},
author = {Cadwallader, G. J. and Deremer, R. K.},
abstractNote = {The turbomachine is located within the primary coolant system of a nuclear closed cycle gas turbine plant (HTGR-GT). The deblading of the turbine can cause a rapid pressure equilibration transient that generates significant loads on other components in the system. Prediction of and design for this transient are important aspects of assuring the safety of the HTGR-GT. This paper describes the adaptation and use of the RATSAM program to analyze the rapid fluid transient throughout the primary coolant system during a spectrum of turbine deblading events. Included are discussions of (1) specific modifications and improvements to the basic RATSAM program, which is also briefly described; (2) typical results showing the expansion wave moving upstream from the debladed turbine through the primary coolant system; and (3) the effect on the transient results of different plenum volumes, flow resistances, times to deblade, and geometries that can choke the flow.},
doi = {},
url = {https://www.osti.gov/biblio/6688669}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Nov 01 00:00:00 EST 1980},
month = {Sat Nov 01 00:00:00 EST 1980}
}

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