RELAP5 simulation of CANDU Station Blackout accidents with/without water make-up to the steam generators

Steam Generators and Steam Distribution Networks

Modeling of a Flooding Induced Station Blackout for a Pressurized Water Reactor Using the RISMC Toolkit

In the Risk-Informed Safety Margin Characterization (RISMC) approach we want to understand not just the frequency of an event like core damage, but how close we are (or are not) to key safety-related events and how might we increase our safety margins. The RISMC Pathway uses the probabilistic margin approach to quantify impacts to reliability and safety by coupling both probabilistic (via stoch...

A Simulation-Optimization Model For Capacity Coordination In Make To Stock/Make To Order Production Environments

Capacity coordination, as the tactical level of hierarchical production planning in hybrid MTS/MTO systems, includes numerous important decisions. In this paper, two of these decisions i.e. finding the best strategy for the acceptance/rejection of incoming orders and determining orders’ due dates – are investigated. Also a simulation model is proposed to evaluate the efficiency of the presented...

Chemical Cleaning of Fossil Power Station Steam Generators; Past, Present and Future

Technology for chemical cleaning of steam generators at fossil stations was developed during the latter half of the 20 century. Cleaning solvents and processes were developed for application to conventional boilers. The new fleet of combined cycle generating units with heat recovery steam generators (HRSGs) has raised questions concerning the applicability of technology developed for use in con...

Multi-objective optimization of heat recovery steam generators

In this paper, a multi-objective method is used to optimize a heat recovery steam generator (HRSG). Two objective functions have been used in the optimization, which are irreversibility and HRSG equivalent volume. The former expresses the exergetic efficiency and the latter demonstrates the cost of the HRSG. Decision variables are geometric and operational parameters of the HRSG. The result...