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Title: Updated Peach Bottom Model for MELCOR 1.8.6: Description and Comparisons

Abstract

A MELCOR 1.8.5 model of the Peach Bottom Unit 2 or 3 has been updated for MELCOR 1.8.6. Primarily, this update involved modification of the lower head modeling. Three additional updates were also performed. First, a finer nodalization of the containment wet well was employed. Second, the pressure differential used by the logic controlling the safety relief valve actuation was modified. Finally, an additional stochastic failure mechanism for the safety relief valves was added. Simulation results from models with and without the modifications were compared. All the analysis was performed by comparing key figures of merit from simulations of a long-term station blackout scenario. This report describes the model changes and the results of the comparisons.

Authors:
 [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1156748
Report Number(s):
ORNL/TM-2014/207
AF5810000; NEAF278
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
MELCOR; Peach Bottom; LTSBO

Citation Formats

Robb, Kevin R. Updated Peach Bottom Model for MELCOR 1.8.6: Description and Comparisons. United States: N. p., 2014. Web. doi:10.2172/1156748.
Robb, Kevin R. Updated Peach Bottom Model for MELCOR 1.8.6: Description and Comparisons. United States. https://doi.org/10.2172/1156748
Robb, Kevin R. 2014. "Updated Peach Bottom Model for MELCOR 1.8.6: Description and Comparisons". United States. https://doi.org/10.2172/1156748. https://www.osti.gov/servlets/purl/1156748.
@article{osti_1156748,
title = {Updated Peach Bottom Model for MELCOR 1.8.6: Description and Comparisons},
author = {Robb, Kevin R},
abstractNote = {A MELCOR 1.8.5 model of the Peach Bottom Unit 2 or 3 has been updated for MELCOR 1.8.6. Primarily, this update involved modification of the lower head modeling. Three additional updates were also performed. First, a finer nodalization of the containment wet well was employed. Second, the pressure differential used by the logic controlling the safety relief valve actuation was modified. Finally, an additional stochastic failure mechanism for the safety relief valves was added. Simulation results from models with and without the modifications were compared. All the analysis was performed by comparing key figures of merit from simulations of a long-term station blackout scenario. This report describes the model changes and the results of the comparisons.},
doi = {10.2172/1156748},
url = {https://www.osti.gov/biblio/1156748}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}