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Primary circuit iodine model addition to IMPAIR-3

Abstract

As part of a continuing effort to provide the U.S. Department of Energy (DOE) Advanced Reactor Severe Accident Program (ARSAP) with complete iodine analysis capability, a task was undertaken to expand the modeling of IMPAIR-3, an iodine chemistry code. The expanded code will enable the DOE to include detailed iodine behavior in the assessment of severe accident source terms used in the licensing of U.S. Advanced Light Water Reactors (ALWRs). IMPAIR-3 was developed at the Paul Scherrer Institute (PSI), Switzerland, and has been used by ARSAP for the past two years to analyze containment iodine chemistry for ALWR source term analyses. IMPAIR-3 is primarily a containment code but the iodine chemistry inside the primary circuit (the Reactor Coolant System or RCS) may influence the iodine species released into the the containment; therefore, a RCS iodine chemistry model must be implemented in IMPAIR-3 to ensure thorough source term analysis. The ARSAP source term team and the PSI IMPAIR-3 developers are working together to accomplish this task. This cooperation is divided into two phases. Phase I, taking place in 1996, involves developing a stand-alone RCS iodine chemistry program called IMPRCS (IMPAIR -Reactor Coolant System). This program models a number of the chemical  More>>
Authors:
Osetek, D J; Louie, D L.Y.; [1]  Guntay, S; Cripps, R [2] 
  1. Los Alamos Technical Associates, Inc., Albuquerque, NM (United States)
  2. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Publication Date:
Dec 01, 1996
Product Type:
Technical Report
Report Number:
PSI-97-02; CONF-9606320-; NEA/CSNI/R(96)-6.
Reference Number:
SCA: 210100; 210200; 400201; PA: AIX-28:037519; EDB-97:078481; SN: 97001795996
Resource Relation:
Conference: 4. CSNI workshop on the chemistry of iodine in reactor safety, Wuerenlingen (Switzerland), 10-12 Jun 1996; Other Information: PBD: Dec 1996; Related Information: Is Part Of Proceedings of the 4. CSNI workshop on the chemistry of iodine in reactor safety; Guentay, S. [ed.] [Paul Scherrer Inst. (PSI), Villigen (Switzerland)]; PB: 716 p.
Subject:
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; 40 CHEMISTRY; BWR TYPE REACTORS; REACTOR ACCIDENTS; IODINE; CHEMISTRY; PWR TYPE REACTORS; SOURCE TERMS; COMPUTERIZED SIMULATION; EXPERIMENTAL DATA; I CODES; IODINE COMPOUNDS; PRIMARY COOLANT CIRCUITS; THEORETICAL DATA
OSTI ID:
481464
Research Organizations:
Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Country of Origin:
Switzerland
Language:
English
Other Identifying Numbers:
Other: ON: DE97624048; TRN: CH9700215037519
Availability:
INIS; OSTI as DE97624048
Submitting Site:
CHN
Size:
pp. 423-436
Announcement Date:
Jun 20, 1997

Citation Formats

Osetek, D J, Louie, D L.Y., Guntay, S, and Cripps, R. Primary circuit iodine model addition to IMPAIR-3. Switzerland: N. p., 1996. Web.
Osetek, D J, Louie, D L.Y., Guntay, S, & Cripps, R. Primary circuit iodine model addition to IMPAIR-3. Switzerland.
Osetek, D J, Louie, D L.Y., Guntay, S, and Cripps, R. 1996. "Primary circuit iodine model addition to IMPAIR-3." Switzerland.
@misc{etde_481464,
title = {Primary circuit iodine model addition to IMPAIR-3}
author = {Osetek, D J, Louie, D L.Y., Guntay, S, and Cripps, R}
abstractNote = {As part of a continuing effort to provide the U.S. Department of Energy (DOE) Advanced Reactor Severe Accident Program (ARSAP) with complete iodine analysis capability, a task was undertaken to expand the modeling of IMPAIR-3, an iodine chemistry code. The expanded code will enable the DOE to include detailed iodine behavior in the assessment of severe accident source terms used in the licensing of U.S. Advanced Light Water Reactors (ALWRs). IMPAIR-3 was developed at the Paul Scherrer Institute (PSI), Switzerland, and has been used by ARSAP for the past two years to analyze containment iodine chemistry for ALWR source term analyses. IMPAIR-3 is primarily a containment code but the iodine chemistry inside the primary circuit (the Reactor Coolant System or RCS) may influence the iodine species released into the the containment; therefore, a RCS iodine chemistry model must be implemented in IMPAIR-3 to ensure thorough source term analysis. The ARSAP source term team and the PSI IMPAIR-3 developers are working together to accomplish this task. This cooperation is divided into two phases. Phase I, taking place in 1996, involves developing a stand-alone RCS iodine chemistry program called IMPRCS (IMPAIR -Reactor Coolant System). This program models a number of the chemical and physical processes of iodine that are thought to be important at conditions of high temperature and pressure in the RCS. In Phase II, which is tentatively scheduled for 1997, IMPRCS will be implemented as a subroutine in IMPAIR-3. To ensure an efficient calculation, an interface/tracking system will be developed to control the use of the RCS model from the containment model. These two models will be interfaced in such a way that once the iodine is released from the RCS, it will no longer be tracked by the RCS model but will be tracked by the containment model. All RCS thermal-hydraulic parameters will be provided by other codes. (author) figs., tabs., refs.}
place = {Switzerland}
year = {1996}
month = {Dec}
}