CSNI0020 LOFT/L6-7.

1. NAME OR DESIGNATION:  LOFT/L6-7.

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 was the seventh in the NRC L6 Series of Anticipated Transients experiments. Rapid secondary side induced cooldown was studied. The experiment was conducted on 31 September 1981.

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

- B.D. Stitt and J.M. Divine
Experiment Data Report for LOFT Anticipated Transient
Experiment L6-7 and Anticipated Transient with Multiple
Failures Experiment L9-2 (NUREG/CR-2277 - EGG-2121 (September 1981))
- 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.
- J. Fell and S.M. Modro:
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:  L6-7

15. ESTABLISHMENT

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

CCVM data        mag tapeDirectory         TOTAL:  76,113,680       CVMTP
CCVM data        mag tapeCurrent                      388,800       CVMTP
CCVM data        mag tapeControl valve                781,920       CVMTP
CCVM data        mag tapeComputed parameters        7,076,080       CVMTP
CCVM data        mag tapeDensity                    1,925,680       CVMTP
CCVM data        mag tapeFlow velocity                586,320       CVMTP
CCVM data        mag tapeFrequency                  1,916,240       CVMTP
CCVM data        mag tapeMass flow                  1,368,240       CVMTP
CCVM data        mag tapeLevels                       584,320       CVMTP
CCVM data        mag tapeNeutron detector             586,000       CVMTP
CCVM data        mag tapeDifferential pressure      3,713,520       CVMTP
CCVM data        mag tapePressure                   4,102,960       CVMTP
CCVM data        mag tapePower                      5,003,040       CVMTP
CCVM data        mag tapeRotational speed             195,440       CVMTP
CCVM data        mag tapeTemperature               47,496,320       CVMTP
CCVM data        mag tapeVoltage                      388,800       CVMTP