CSNI1001: MARVIKEN-CFT, Marviken Full Scale Critical Flow Tests

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CSNI1001 MARVIKEN-CFT. (Abstract last modified 04-NOV-1998)

MARVIKEN-CFT, Marviken Full Scale Critical Flow Tests

Abstract Table of Contents:

OPERATING SYSTEM

OTHER RESTRICTIONS

1. NAME OR DESIGNATION - MARVIKEN-CFT.

2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name Package-ID Status MARVIKEN-CFT CSNI1001/01 Arrived

Machines used: Package-ID Orig.Computer Test Computer CSNI1001/01 Many Computers

3. DESCRIPTION OF TEST FACILITY - The major components of the facility are:
- The pressure vessel with a net volume = 425 m3, a maximum design pressure = 5.75 MPa and a maximum design temperature = 545 K.
- The discharge pipe attached to the pressure vessel bottom. The discharge pipe consists of a ball valve and pipe spools which house the instrumentation upstream of the test nozzle.
- The test nozzles and rupture disc assemblies. A set of test nozzles of specified lengths and diameters (tubular section lengths from 0.166 to 1.809 m and tubular section diameters from 0.2 to 0.509 m) were used to which the rupture disc assemblies were attached.
- The containment and exhaust pipes, consisting of the drywell, the wetwell, fuel element transport hall, the ground level exhaust pipe, and the upper exhaust pipe.

4. DESCRIPTION OF THE TESTS - Before each test the vessel was filled with degassed water up to a certain level which varied between the tests (from about 16.5 to 20 m above vessel bottom). The pressure was around 5 MPa (one test around 4 MPa). A pre-test warm-up period produced a temperature profile along the vessel height.
After a stabilizing period of several hours, the test was initiated by failing the discs contained in the rupture disc assembly. Measurements recorded in the vessel, the discharge pipe, and the test nozzle, provided the data, while the vessel fluid was discharged through the test nozzle into the containment and further through the exhaust pipes to the ambient atmosphere.
The test was terminated when the ball valve begun to close or when pure steam was entered the discharge pipe.

5. EXPERIMENTAL LIMITATIONS OR SHORTCOMINGS - Initial maximum pressure was limited to about 5 MPa.

6. PHENOMENA TESTED - Evaporation due to depressurization; critical two-phase flow in breaks and pipes.

7. SPECIAL FEATURES OF EXPERIMENTS - Sizes of test nozzles provided data in the upper range of scale.

8. COUNTERPART EXPERIMENTS -

9. STATUS
CSNI1001/01: 04-NOV-1998 Arrived at NEADB

10. REFERENCES -
- The Marviken Full Scale Critical Flow Tests.
Test Reports
Joint Reactor Safety Experiments in the Marviken Power Station, Sweden.
MXC-### (1977 - 1979)
CSNI1001/01:
The Marviken Full Scale Critical Flow Tests
- Description of the Test Facility (MXC-101, December 1979)
- Measurement System (MXC-102, December 1979)
- Data Accuracy (MXC-104, December 1979)
- Summary Report (MXC-301, December 1979)
- Report Abstracts (MXC-401, December 1979)
- Conclusions (MXC-402, December 1979)

11. TEST DESIGNATION - Marviken Full Scale Critical Flow Tests.

12. PROGRAMMING LANGUAGE -CSNI1001/01:

15. ESTABLISHMENT -
        Studsvik Eco & Safety AB
        S-611 82 Nykoeping
        SWEDEN

16. MATERIAL AVAILABLE -CSNI1001/01:
CCVM Data (total of files: 245 MB)

17. CATEGORIES -

- Y. Integral Experiments Data, Databases, Benchmarks

Keywords: DATA, EVAPORATION MODEL, FLOW MODELS

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