CSNI0007 LOFT/LP-FW-1.

1. NAME OR DESIGNATION:  LOFT/LP-FW-1.

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

The first OECD LOFT experiment was conducted on February 20, 1983.  It was designed to evaluate the generic PWR system response during a complete loss-of-feedwater transient.  The objective of the experiment was to investigate the performance of primary "feed and bleed" using a "bleed" from the PORV and "feed" from the HPIS to provide decay heat removal and system pressure reduction while maintaining the primary coolant inventory.

5. EXPERIMENTAL LIMITATIONS OR SHORTCOMINGS

Short core and steam generator, excessive core bypass, other scaling compromises, and lack of adequate measurements in certain areas.

6. PHENOMENA TESTED

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

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

8. COUNTERPART EXPERIMENTS:  Semiscale.

- The OECD/LOFT Project, Achievements and Significant Results
Proceedings of an Open Forum, 9-11 May 1990, Madrid, Spain
printed in 1991
- 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.
- Tape Descriptions and Supplementary Information
- 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:  LP-FW-1

15. ESTABLISHMENT

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

CCVM data        mag tapeDirectory      (TOTAL: 73.0 MB )           CVMTP
CCVM data        mag tapeControl valves          2.5 MB             CVMTP
CCVM data        mag tapeComputed parameters    10.4 MB             CVMTP
CCVM data        mag tapeDensities               3.1 MB             CVMTP
CCVM data        mag tapeFlow velocities         6.7 MB             CVMTP
CCVM data        mag tapeFrequencies             1.2 MB             CVMTP
CCVM data        mag tapeMass flows              3.1 MB             CVMTP
CCVM data        mag tapeLevel measurements      1.2 MB             CVMTP
CCVM data        mag tapeLevel measurements      3.7 MB             CVMTP
CCVM data        mag tapeMomentum flux           5.5 MB             CVMTP
CCVM data        mag tapeNeutron detector        4.3 MB             CVMTP
CCVM data        mag tapeDifferential pressure  11.7 MB             CVMTP
CCVM data        mag tapePressure               12.9 MB             CVMTP
CCVM data        mag tapePump parameters         1.2 MB             CVMTP
CCVM data        mag tapeNIS power range         1.8 MB             CVMTP
CCVM data        mag tapeROD position            3.7 MB             CVMTP
CCVM data        mag tapeDirectory      (TOTAL:116.4 MB )           CVMTP
CCVM data        mag tapeTemperatures          116.4 MB             CVMTP