CSNI0016 LOFT/L2-5.

1. NAME OR DESIGNATION:  LOFT/L2-5.

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 third of the NRC L2 Series of nuclear large Break LOCA experiments, conducted on 16 June 1981. It simulated a 100% cold leg break with a maximum heat generation of 40 kW/m and rapid pump coastdown.

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. RELATED OR AUXILIARY PROGRAMS: COUNTERPART EXPERIMENTS

- P.D. Bayless:
Experiment Data Report for LOFT Large Break Loss-of-Coolant Experiment L2-5
NUREG/CR-2826 - EGG-2210 (August 1982)
- 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)
- J.D. Burtt and S.A. Crowton:
International Standard Problem 13 LOFT Experiment L2-5 - Preliminary comparison
report, EGG-NTAP-6276 (April 1983) also NEA/CSNI-101
- 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)
- C.B. Davis:
Assessment of the RELAP5 Multi-Dimensional Component Model Using Data From LOFT
Test L2-5 (INEEL/EXT-97-01325) (1998)
- R.A. Yorg:
Failure Mode Effects and Consequence Analysis for LOFT Large Break Test, L2-5
(RE-A-82-050) (June 1982)
- K.S. Fullmer:
Large Break Parametric Studies for Pretest Planning of LOFT Experiment L2-5
(EGG-LOFT-5788) (February 1982)
- R.S. Semken:
LOFT Experiment Definition Document LOFT Power Ascension Experiment Series L2
Nuclear Experiment L2-5 (EGG-LOFT-5798) (1982)
- R.S. Semken:
LOFT Experiment Operating Specification LOFT Power Ascensing Exeriment Series L
2 Nuclear Experiment L2-5 (EGG-LOFT-5696-R1) (1982)
- S. L. Thompson, L. N. Kmetyk:
RELAP5 Assessment; LOFT Large Break L2-5 (NUREG/CR-3608) (1984)

11. TEST DESIGNATION:  L2-5

15. ESTABLISHMENT

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

CCVM data        mag tapeDirectory    TOTAL:   81,221,200           CVMTP
CCVM data        mag tapeCurrent                1,405,920           CVMTP
CCVM data        mag tapeControl valve         20,333,040           CVMTP
CCVM data        mag tapeComputed parameters   15,801,040           CVMTP
CCVM data        mag tapeDensity                5,712,880           CVMTP
CCVM data        mag tapeDisplacement           2,812,640           CVMTP
CCVM data        mag tapeFlows                 11,954,880           CVMTP
CCVM data        mag tapeFrequency              1,405,920           CVMTP
CCVM data        mag tapeLevels                 4,218,560           CVMTP
CCVM data        mag tapeMomentum flux         12,654,640           CVMTP
CCVM data        mag tapeNeutron detector       4,921,680           CVMTP
CCVM data        mag tapeDirectory    TOTAL:   75,855,200           CVMTP
CCVM data        mag tapeDifferential pressure 18,973,680           CVMTP
CCVM data        mag tapePressure              48,445,200           CVMTP
CCVM data        mag tapePower                  2,811,840           CVMTP
CCVM data        mag tapeNIS power range        2,812,320           CVMTP
CCVM data        mag tapeRotational speed       1,406,240           CVMTP
CCVM data        mag tapeVoltage                1,405,920           CVMTP
CCVM data        mag tapeDirectory    TOTAL:  112,520,400           CVMTP
CCVM data        mag tapeTemperature part 1   112,520,400           CVMTP
CCVM data        mag tapeDirectory    TOTAL:  102,677,360           CVMTP
CCVM data        mag tapeTemperature part 2   102,677,360           CVMTP
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