CSNI0017 LOFT/L2-3.

1. NAME OR DESIGNATION:  LOFT/L2-3.

3. DESCRIPTION OF TEST FACILITY

The LOFT Integral Test Facility is a scale model of a LPWR. The intent of the facility is to model the nuclear, thermal-hydraulic phenomena which would take place in a LPWR during a LOCA.  The general philosophy in scaling coolant volumes and flow areas in LOFT was to use the ratio of the LOFT core [50 MW(t)] to a typical LPWR core [3000 MW(t)].  For some components, this factor is not applied; however, it is used as extensively as practical.  In general, components used in LOFT are similar in design to those of a LPWR.  Because of scaling and component design, the LOFT LOCA is expected to closely model a LPWR LOCA.

4. DESCRIPTION OF TEST

This experiment was the second of the NRC L2 Series of nuclear large Break LOCA experiments, and was conducted on 12 May 1979. It simulated a 100% cold leg break with a maximum heat generation of 39 kW/m.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: EXPERIMENTAL LIMITATIONS OR SHORTCOMINGS

6. PHENOMENA TESTED

Phase separation; ECC bypass and penetration; core heat transfer; quench front propagation.

7. SPECIAL FEATURES OF EXPERIMENT:  Only integral research facility with a nuclear core.

8. COUNTERPART EXPERIMENTS:  Semiscale S-06-03.

- S.M. Modro, S.N. Aksan, V.T. Berta and A.B. Wahba
Review of LOFT Large Break Experiments
OECD LOFT-T-3900 (August 1988)
- Charles L. Nalezny
Summary of Nuclear Regulatory Commission's
LOFT Program Experiments
NUREG/CR-3214 - EGG-2248 (July 1983)
- Charles L. Nalezny
Summary of Nuclear Regulatory Commission's
LOFT Program Research Findings
NUREG/CR-3005 - EGG-2231 (April 1985)
- D.L. Reeder
LOFT System and Test Description
NUREG/CR-0247 (TREE-1208) July 1978
- S.M. Modro, J. Fell
An Account of the OECD LOFT Project
OECD LOFT-T-3907 (May 1990)
- Technical Considerations for LOFT Consortium Test Plan,
Prepared for discussion by LOFT Consortium Working Group Meeting
Munich, Germany, July 15-16, 1982 (SEN/LOFT(82)6)

11. TEST DESIGNATION:  L2-3

15. ESTABLISHMENT

        Idaho National Engineering Laboratory
        EG&G Idaho
        Idaho Falls, Idaho 83415.
        U.S.A.

CCVM data        mag tapeDirectory         TOTAL: 49,482,480 bytes  CVMTP
CCVM data        mag tapeControl valve             6,145,760        CVMTP
CCVM data        mag tapeDensity                   2,381,280        CVMTP
CCVM data        mag tapeFlow velocity             2,306,160        CVMTP
CCVM data        mag tapeMass flow                   768,720        CVMTP
CCVM data        mag tapeLevels                    1,537,440        CVMTP
CCVM data        mag tapeMomentum flux            11,241,600        CVMTP
CCVM data        mag tapeDifferential pressure     4,612,320        CVMTP
CCVM data        mag tapePressure                 12,295,520        CVMTP
CCVM data        mag tapePower                     7,681,200        CVMTP
CCVM data        mag tapeRotational speed            512,480        CVMTP
CCVM data        mag tapeDirectory         TOTAL: 76,872,000 bytes  CVMTP
CCVM data        mag tapeTemperature              76,872,000 bytes  CVMTP