A RELAP5 MODEL FOR THE THERMAL-HYDRAULIC ANALYSIS OF A TYPICAL PRESSURIZED WATER REACTOR

Abstract

This study describes a RELAP5 computer code for thermal-hydraulic analysis of a typical pressurized water reactor. RELAP5 is used to calculate the thermal hydraulic characteristics of the reactor core and the primary loop under steady-state and hypothetical accidents conditions. New designs of nuclear power plants are directed to increase safety by many methods like reducing the dependence on active parts (such as safety pumps, fans, and diesel generators ) and re placing them with pas sive features (such as gravity draining of cooling water from tanks, and nat ural circulation of water and air). In this work, high and medium pressure injection pumps are re placed by passive injection components. Different break sizes in cold leg pipe are simulated to analyze to what degree the plant is safe (with out any operator action) by using only these passive components. Also station black out accident is simulated and the time response of operator action has been discussed.

Keywords

Dates

  • Submission Date2008-10-24
  • Revision Date2009-02-24
  • Acceptance Date2009-06-13

DOI Reference

10.2298/TSCI01001079A

References

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Volume 14, Issue 1, Pages79 -88