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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1. NAME OR DESIGNATION: NEPTUN/5050.

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

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.

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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.

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9. STATUS

Package ID	Status date	Status
CSNI1012/01	21-JUL-1993	Arrived at NEADB

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10. REFERENCES

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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11. TEST DESIGNATION: 5050.

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12. PROGRAMMING LANGUAGE(S) USED

No specified programming language

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15. ESTABLISHMENT

      M. Richner, G.Th. Analytis, S.N. Aksan
      Paul Scherrer Institute
      5232-VILLIGEN PSI
      Switzerland

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16. MATERIAL AVAILABLE

CSNI1012/01

CCVM data mag tapeReflood test 5050 (521,280 bytes) CVMTP

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