CSNI0030 TLTA/6432.

1. NAME OR DESIGNATION:  TLTA/6432.

3. DESCRIPTION OF TEST FACILITY

The Two-Loop-Test-Apparatus (TLTA) is a 1:624 volume scaled BWR/6 simulator. It was the predecessor of the better-scaled FIST facility. The facility is capable of full BWR system pressure and has a simulated core with a full size 8 x 8, full power single bundle of indirect electrically heated rods. All major BWR systems are simulated including lower plenum, guide tube, core region (bundle and bypass), upper plenum, steam separator, steam dome, annular downcomer, recirculation loops and ECC injection systems. The fundamental scaling consideration was to achieve real-time response. A number of the scaling compromises present in TLTA were corrected in the FIST configuration. These compromises include a number of regional volumes and component elevations.

4. DESCRIPTION OF TEST

64.45 sqcm small-break LOCA; no high pressure cooling system

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

6. PHENOMENA TESTED

Channel bypass axial flow and void distribution; core heat transfer; quench front propagation for both fuel rods and channel walls; guide tube and lower plenum flashing; mixture level
in core.

7. UNUSUAL FEATURES: SPECIAL FEATURES OF EXPERIMENT

8. COUNTERPART EXPERIMENTS:  FIST test 6SB2C; ROSA-III test 984.

- L. S. Lee, G. L. Sozzi, S. A. Allison: BWR Large Break Simulation Tests - BWR
Blowdown/Emergency Core Cooling Program Volume 1
NUREG/CR-2229 April 1982

11. TEST DESIGNATION:  6432

15. ESTABLISHMENT

      Idaho National Engineering Laboratory
      Idaho Falls, Idaho, U.S.A.

CCVM data        mag tape                  (TOTAL: 19,103,680 bytes)CVMTP
CCVM data        mag tapeCurrent                       72,160       CVMTP
CCVM data        mag tapeDensity                    1,804,000       CVMTP
CCVM data        mag tapeEnergy                       288,640       CVMTP
CCVM data        mag tapeMass flow                    757,680       CVMTP
CCVM data        mag tapeLevels                       396,880       CVMTP
CCVM data        mag tapeMass                         288,640       CVMTP
CCVM data        mag tapePercent                    1,221,360       CVMTP
CCVM data        mag tapeDifferential pressure      2,381,280       CVMTP
CCVM data        mag tapePressure                     288,640       CVMTP
CCVM data        mag tapePeak clad temperature        116,320       CVMTP
CCVM data        mag tapePower                         72,160       CVMTP
CCVM data        mag tapeRHOF                       1,334,960       CVMTP
CCVM data        mag tapeRHOG                       1,298,880       CVMTP
CCVM data        mag tapeRHOL                       1,298,880       CVMTP
CCVM data        mag tapePump rpm                     108,240       CVMTP
CCVM data        mag tapeTemperature                4,311,360       CVMTP
CCVM data        mag tapeMaximum temperature        1,395,840       CVMTP
CCVM data        mag tapeSaturation temperature     1,451,280       CVMTP
CCVM data        mag tapeValve position               216,480       CVMTP