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Calculation of the negative reactivity inserted by the shutdown system number two (SDS2) of a CANDU reactor

Abstract

The secondary shutdown system (SDS2) of a CANDU reactor consists of liquid poison injection through nozzles disposed horizontally across the core. The nominal concentration of gadolinium nitrate poison is 8000 ppm. With the methods available to the nuclear industry for calculating the negative reactivity inserted by the SDS2, some approximations are needed, and a simplified model of poison propagation has to be used to calculate the differential cross sections. The objective of this paper is to evaluate the errors introduced by the approximations in the supercell and core calculations. The MULTICELL and EXCELL codes gave different power distributions, and further work was recommended. 9 refs., 2 tabs., 4 figs.
Authors:
Arsenault, B [1] 
  1. Ecole Polytechnique, Montreal, PQ (Canada)
Publication Date:
Dec 31, 1993
Product Type:
Conference
Report Number:
INIS-CA-0009; CONF-9304317-
Reference Number:
SCA: 220400; 210400; PA: AIX-28:057259; EDB-97:116773; SN: 97001841518
Resource Relation:
Conference: 18. annual student conference CNA/CNS, Montreal (Canada), 2-3 Apr 1993; Other Information: PBD: 1993; Related Information: Is Part Of Proceedings of the 18. annual student conference CNA/CNS; Tye, P. [ed.]; PB: 239 p.
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; 21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; CANDU TYPE REACTORS; REACTOR SAFETY FUSES; COMPUTERIZED SIMULATION; D CODES; E CODES; FLUID POISON CONTROL; GADOLINIUM NITRATES; M CODES; NEUTRON TRANSPORT THEORY; REACTIVITY; REACTOR KINETICS; SCRAM
OSTI ID:
517091
Research Organizations:
Canadian Nuclear Society, Toronto, ON (Canada); Canadian Nuclear Association, Toronto, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE97638270; TRN: CA9700545057259
Availability:
INIS; OSTI as DE97638270
Submitting Site:
INIS
Size:
pp. 112-124
Announcement Date:

Citation Formats

Arsenault, B. Calculation of the negative reactivity inserted by the shutdown system number two (SDS2) of a CANDU reactor. Canada: N. p., 1993. Web.
Arsenault, B. Calculation of the negative reactivity inserted by the shutdown system number two (SDS2) of a CANDU reactor. Canada.
Arsenault, B. 1993. "Calculation of the negative reactivity inserted by the shutdown system number two (SDS2) of a CANDU reactor." Canada.
@misc{etde_517091,
title = {Calculation of the negative reactivity inserted by the shutdown system number two (SDS2) of a CANDU reactor}
author = {Arsenault, B}
abstractNote = {The secondary shutdown system (SDS2) of a CANDU reactor consists of liquid poison injection through nozzles disposed horizontally across the core. The nominal concentration of gadolinium nitrate poison is 8000 ppm. With the methods available to the nuclear industry for calculating the negative reactivity inserted by the SDS2, some approximations are needed, and a simplified model of poison propagation has to be used to calculate the differential cross sections. The objective of this paper is to evaluate the errors introduced by the approximations in the supercell and core calculations. The MULTICELL and EXCELL codes gave different power distributions, and further work was recommended. 9 refs., 2 tabs., 4 figs.}
place = {Canada}
year = {1993}
month = {Dec}
}