CSNI1012 NEPTUN/5050.
NEPTUN/5050, PWR LOCA Cooling Heat Transfer Tests for Loft, Reflood Test
NAME OR DESIGNATION, COMPUTER, DESCRIPTION OF TEST FACILITY, DESCRIPTION OF TEST, STATUS, REFERENCES, TEST DESIGNATION, LANGUAGE, ESTABLISHMENT, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| NEPTUN/5050 | CSNI1012/01 | Arrived | 21-JUL-1993 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| CSNI1012/01 | Many Computers |
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3. DESCRIPTION OF TEST FACILITY
NEPTUN is designed to perform PWR LOCA simulation experiments, which provide the full length emergency cooling heat transfer tests for LOFT. Therefore the NEPTUN heater bundle with 33 electrical heater elements and 4 guide tubes simulates a section of the LOFT nuclear core. The main test loop also contains measuring systems for the carry-over rate and for the steam expelled, and a backpressure control system. A water loop brings the water to the initial reflooding conditions. In addition, auxiliary systems maintain normal operating conditions.
NEPTUN is designed to perform PWR LOCA simulation experiments, which provide the full length emergency cooling heat transfer tests for LOFT. Therefore the NEPTUN heater bundle with 33 electrical heater elements and 4 guide tubes simulates a section of the LOFT nuclear core. The main test loop also contains measuring systems for the carry-over rate and for the steam expelled, and a backpressure control system. A water loop brings the water to the initial reflooding conditions. In addition, auxiliary systems maintain normal operating conditions.
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4. DESCRIPTION OF TEST
Test 5050 is one of a series of 40 reflood tests performed in NEPTUN. Before the start of the test, the flooding water in its circuit is brought to the following conditions:
pressure = 4.1 bar
velocity = 15.0 cm/sec
subcooling temperature = 78C
single rod power = 2.45 kW
maximal initial cladding temperature = 867C.
Test 5050 is one of a series of 40 reflood tests performed in NEPTUN. Before the start of the test, the flooding water in its circuit is brought to the following conditions:
pressure = 4.1 bar
velocity = 15.0 cm/sec
subcooling temperature = 78C
single rod power = 2.45 kW
maximal initial cladding temperature = 867C.
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CSNI1012/01, included references:
- H. Gruetter, F. Stierli, S.N. Aksan, G. Varadi:Neptun Bundle Reflooding Experiments: Test Facility Description
EIR Bericht Nr. 386, March 1980
- NEPTUN Tape Content
- M. Richner, G.Th. Analytis and S.N. Aksan:
Assessment of RELAP5/MOD2, Cycle 36.02, Using NEPTUN
Reflooding Experimental Data
NUREG/IA-0054 (August 1992)
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Keywords: data, loss-of-coolant accident, reflooding, transients.