CSNI1020: FALCON-ISP1, ISP-2, fission product and aerosol transport in primary coolant system and in the containment

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CSNI1020 FALCON/ISP1-ISP2. (Abstract last modified 03-JAN-1994)

FALCON-ISP1, ISP-2, fission product and aerosol transport in primary coolant system and in the containment

Abstract Table of Contents:

1. NAME OF EXPERIMENT - FALCON/ISP1-ISP2.

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

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Explanation of the status codes.

Program-name Package-ID Status FALCON/ISP1-ISP2 CSNI1020/01 Arrived

Machines used: Package-ID Orig.Computer Test Computer CSNI1020/01

3. DESCRIPTION OF TEST FACILITY -
Falcon has been developed to study the transport and deposition of fission products through a complex pathway simulating to some degree a reactor environment under severe accident conditions. It consists of two negative pressure double glove boxes (one of which is mounted horizontally and the other vertically), a system of thermal gradient tubes, a stainless steel containment vessel, and a series of filters designed for use with gamma-ray spectrometers and aerosol analysis equipment. The apparatus was designed to study the transport of fission product vapours and aerosols as they pass from the high-temperature reducing conditions representative of the primary circuit to the low-temperature predominantly oxidising and condensing steam conditions simulating the containment atmosphere. Fission products are released from both simulant and trace-irradiated fuel samples heated inductively up to 3000 K in a controlled manner. The resulting species can be studied in the presence and absence of aerosols from bulk reactor materials such as the Ag-In-Cd control rod and boric acid. Such vapours and aerosols can be studied by a range of in-situ techniques including mass spectrometry, gamma-ray spectroscopy, aerosol analysis and Maypacks, together with their collection on filters and deposition foils for subsequent elemental, chemical and morphological analyses.
- Thermal gradient arrangement (TG): serves study of aerosol deposition inside a tube with controlled temperature gradient supposed to simulate a primary system condition;
- Containment Configuration (CT): serves to provide data related to a containment under severe accident conditions.

4. DESCRIPTION OF TEST - The FALCON experiments have been undertaken at the Winfrith Technology Centre to simulate the transport and deposition of fission products in the primary circuit and containment building of a LWR under severe accident conditions.
ISP 34 were based on two Falcon experiments using simulant fuel.
- FAL-ISP-1 (28 May 1992): Low relative humidity in containment (approx. 50 %) with high particle concentration (to test the impact of multicomponent aerosols involving differenct chemical species on different-sized particles and agglomeration models).
- FAL-ISP-2 (22 July 1992): High containment relative humidity (> 90 %) and low particle concentration (to test condensation onto hygroscopiec particles in the absence of agglomeration and assess the limitations of using 1-D aerosol equations).

6. PHENOMENA TESTED - Phenomena of fission product and aerosol transport in primary coolant system and in the containment
- physical and chemical behaviour of fission products under simulated severe accident conditions
- multi-component aerosol effects and vapour-aerosol interactions

7. SPECIAL FEATURES OF EXPERIMENTS -

8. COUNTERPART EXPERIMENTS -

9. STATUS
CSNI1020/01: 03-JAN-1994 Arrived at NEADB

10. REFERENCES -
CSNI1020/01:
- FALCON Specification (FAL/ISP(92)8)
- Summary of Solubility Data (FAL/ISP(92)9)
- Zircaloy Oxidation Data (FAL/ISP(92)10)
- A.M. Beard et al.:
FALCON Data Report 8 Integral Test 3A (FAL/ISP(92)12) March 1990
- P.N. Smith and P.L. Mason:
Analysis of Falcon Test FAL-3A using the CONTAIN Code
(FAL/ISP(92)13) AEA TRS 5095 (March 1991)
- N.J. Ashton et al:
Thermal-Hydraulic and Aerosol Analysis of the Falcon Facility
using the ITHACA Code (FAL/ISP(92)14) SRD R525 (July 1991)
- P. Dumaz:
Analyses of the FALCON Experiments using VICTORIA
(FAL/ISP(92)15) AEA RS 5257 (February 1992)
- A.B. Anderson et al.:
Characterisation of Boric Acid Aerosol Behaviour and Interactions
with Stainless Steel (FAL/ISP(92)16) AEA TRS 5091 (March 1991)
- A.M. Beard and P.J. Bennett:
Characterisation of Control Rod Release Rates and Aerosol Behaviour
(FAL/ISP(92)17) AEA TRS 5064 (March 1991)
- C.G. Benson et al.:
Falcon Seminar, 27-28 June 1989 (FAL/ISP(92)18) AEEW-M2612 (Dec.90)
- P.J. Bennett and B.R. Bowsher:
Falcon II Seminar, 13-14 March 1991
(FAL/ISP(92)19) AEA RS 5116 (May 1991)
- A.M. Beard et al.:
Chemistry Studies in Support of PHEBUS-FP: Multicomponent Aerosol
Behaviour, Summary Report (FAL/ISP(92)20) AEA TRS 5069 (January 91)
- A.M. Beard et al.:
Data Report: Characterisation of Falcon Aerosol Source
(FAL/ISP(92)22) September 1992
- A.M. Beard and P.J. Bennett:
Falcon Thermal-hydraulics Test Data Report
(FAL/ISP(92)23) September 1992
- P.J. Bennett et al.:
CSNI ISP 34 (FALCON): Proceeding of 1st Workshop, Winfrith Technology
Centre, 23-24 March 1992 (FAL/ISP(92)25) AEA RS 5321 (April 1992)
- FAL-ISP 1: Pre-Test Plan (FAL/ISP(92)26)
- Status of CSNI ISP 34 (Falcon), June 1992 (FAL/ISP(92)27)
- FAL-ISP 2: Pre-Test Plan (FAL/ISP(92)28)
- A.M. Beard and P.J. Bennett:
CSNI ISP 34 (FALCON) Data Report: Test 1 (FAL-ISP 1)
(FAL/ISP(92)29) September 1992
- A.M. Beard and P.J. Bennett:
CSNI ISP 34 (FALCON) Thermal Hydraulics Data Test 2 (FAL-ISP 2)
(FAL/ISP(92)30) September 1992
- Thermal Hydraulics for ISP1
- A.M. Beard and P.J. Bennett:
CSNI ISP 34 (FALCON) Primary Circuit Data: Test 2 (FAL-ISP 2)
(FAL/ISP(93)35) January 1993
- FAL-ISP 2: Input Data for Containment Calculations
(FAL/ISP(93)36) April 1993
- A.M. Beard and P.J. Bennett:
CSNI ISP 34 (FALCON) Data Report: Test 2 (FAL-ISP 2)
(FAL/ISP(93)42) July 1993
- P.J. Bennett et al.:
CSNI ISP 34 (FALCON): Summary Proceedings of 2nd Workshop
Winfrith, 7-9 December 1993 (FAL/ISP(93)45) AEA RS 3410 (Jan. 94)
- D.A. Williams:
OECD ISP 34, FALCON Code Comparison Report (NEA/CSNI/R(94)27)
- CSNI ISP 34 (FALCON) Re-Assessment of Experimental Data
(FAL/ISP(94)46)

11. TEST DESIGNATION - FAL-ISP1 and FAL-ISP2.

12. PROGRAMMING LANGUAGE -CSNI1020/01:

15. ESTABLISHMENT -
AEA Technology
Winfrith Technology Centre
Dorchester
Dorset DT2 8DH
U.K.

16. MATERIAL AVAILABLE -CSNI1020/01:
Documentation in PDF format
Thermal hydraulic data

17. CATEGORIES -

- Y. Integral Experiments Data, Databases, Benchmarks

Keywords: AEROSOLS, CONTAINMENT, COOLANTS, FISSION PRODUCTS, PRIMARY