Qualitative analysis of scaling effects in isolation condenser behavior with RELAP5/MOD3.1 thermal-hydraulic code

Book · Mon Jul 01 04:00:00 EDT 1996

OSTI ID:250976

D`Auria, F; Faluomi, V ^[1]

---

1. Univ. of Pisa (Italy). Dept. of Mechanical and Nuclear Constructions

This paper deals with the attempt to analyses with the Relap5/Mod3.1 code, the scaling, effects in the behavior of Isolation Condenser taking as reference the PO-IC-02 experiment performed in the PIER-ONE facility available at Pisa University. The PIPER-ONE is an experimental facility simulating a General Electric BWR-6 with volume and height scaling ratio of 1/2200 and 1/1, respectively. The facility was properly modified to test the thermal-hydraulic characteristics of an isolation condenser-type system. The isolation condenser-type system consists of a once-through heat exchanger immersed in a pool with water at ambient temperature and installed at about 10 m above the core. Several calculations have been performed with Relap5/Mod3/7j and Relap5/Mod3.1 codes, and the capabilities of code to simulate the behavior of the isolation condenser component have been assessed. The results obtained cannot be extrapolated to the plant because of the different scaling of isolation condenser system with respect to the other components of the facility. In this paper the effects of ``scaling`` chances in the facility nodalization are analyzed with the use of Relap5/Mod3.1 code.

• OSTI ID: 250976
• Report Number(s): CONF-960306--; ISBN 0-7918-1226-X
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
22 GENERAL STUDIES OF NUCLEAR REACTORS
99 GENERAL AND MISCELLANEOUS
BWR TYPE REACTORS
COMPUTER CODES
COMPUTERIZED SIMULATION
EVALUATION
HEAT TRANSFER
ISOLATION CONDENSERS
R CODES
REACTOR ACCIDENTS
REACTOR SAFETY EXPERIMENTS
SCALING LAWS
TEST FACILITIES
THEORETICAL DATA