last modified: 21-JUL-1993 | catalog | categories | new | search |

CSNI1011 NEPTUN/5007.

NEPTUN/5007, PWR LOCA Cooling Heat Transfer Tests for Loft, Boil-Off Experiments

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1. NAME OR DESIGNATION:  NEPTUN/5007.
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2. COMPUTERS
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Program name Package id Status Status date
NEPTUN/5007 CSNI1011/01 Arrived 21-JUL-1993

Machines used:

Package ID Orig. computer Test computer
CSNI1011/01 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.
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4. DESCRIPTION OF TEST

Test 5007 was one of ten core boil-off experiments. It was chosen as the "base case", because it was conducted at high pressure and intermediate power. The power is increased at about 50 secs and a rapid drop in the core fluid level occurs at about 100 secs. Between 100 and 110 secs, large voids are formed expelling some of the liquid from the core. At about 800 secs the power is shut off and the rods are allowed to cool down before the system is reflooded.
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9. STATUS
Package ID Status date Status
CSNI1011/01 21-JUL-1993 Arrived at NEADB
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10. REFERENCES
CSNI1011/01, included references:
- S.N.Aksan, F. Stierli, G.Th. Analytis:
  Boil-Off Experiments with the EIR-NEPTUN Facility:
  Analysis and Code Assessment Overview Report
  NUREG/IA-0040, EIR Bericht Nr. 629, March 1992
- 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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11. TEST DESIGNATION:  5007.
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12. PROGRAMMING LANGUAGE(S) USED

No item found

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15. ESTABLISHMENT

      F. Stierli, H. Gruetter, E. Frei, L. Voser
      Laboratory for Thermal-Hydraulics
      Paul Scherrer Institute
      5232-VILLIGEN PSI
      Switzerland
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16. MATERIAL AVAILABLE
CSNI1011/01
CCVM data        mag tapeBoil-off test 5007 data  (1,818,000 bytes) CVMTP
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17. CATEGORIES
  • Y. Integral Experiments Data, Databases, Benchmarks

Keywords: data, loss-of-coolant accident, transients.