The document deals with the proposal to plan a pioneering research in PIPER-ONE loop dealing with hydrogen (H2) production and distribution. PIPER-ONE loop was installed at the Scalbatraio Laboratory managed by IIN (Istituto di Impianti Nucleari) and later on by DCMN (Dipartimento di Costruzioni Meccaniche e Nucleari) of University of Pisa. PIPER-ONE was built in Italy as a consequence of the Three-Mile accident (1979): it aim at simulating the Boiling Water Reactor (BWR) performance following Small Break Loss of Coolant Accidents (SBLOCA). The natural circulation which occurs between down-comer and core into the vessel constitutes the reference thermal-hydraulic phenomenon which needed to be simulated. The concerned document aimed at expanding the initial investigation area for the PIPER-ONE loop. The idea documented in this report was to introduce 1 or 2 Zircaloy cladded electrical rods, which, after the occurrence of CHF (Critical Heat Flux) and the subsequent over-heating would have produced H2 which should move into the primary loop. This implied some new technology in building/operating rods and in measuring hydrogen mixed with vapor. The idea came 30 year before the Fukushima event when the importance of H2 production was confirmed. The modified facility would have been suitable to produce data to validate computer codes (the idea would have made the PIPER-ONE one of the most important facilities in the world … but the project was not funded…). The PIPER-ONE loop was used for an International Standard Problem (ISP) by Organization for Economic Cooperation and Development (OECD) / Nuclear Energy Agency (NEA) / Committee on the Safety of Nuclear Installations (CSNI) during the middle of 80’s. The design and the operation of the loop constituted a milestone achievement in the area of nuclear thermal-hydraulics with main reference to the scaling.

"Proposal of planning hydrogen related experiences in PIPER-ONE facility", University of Pisa Report, DCMN - NT 001(82), Pisa (I)

D'Auria F.
Primo
Writing – Review & Editing
;
1982

Abstract

The document deals with the proposal to plan a pioneering research in PIPER-ONE loop dealing with hydrogen (H2) production and distribution. PIPER-ONE loop was installed at the Scalbatraio Laboratory managed by IIN (Istituto di Impianti Nucleari) and later on by DCMN (Dipartimento di Costruzioni Meccaniche e Nucleari) of University of Pisa. PIPER-ONE was built in Italy as a consequence of the Three-Mile accident (1979): it aim at simulating the Boiling Water Reactor (BWR) performance following Small Break Loss of Coolant Accidents (SBLOCA). The natural circulation which occurs between down-comer and core into the vessel constitutes the reference thermal-hydraulic phenomenon which needed to be simulated. The concerned document aimed at expanding the initial investigation area for the PIPER-ONE loop. The idea documented in this report was to introduce 1 or 2 Zircaloy cladded electrical rods, which, after the occurrence of CHF (Critical Heat Flux) and the subsequent over-heating would have produced H2 which should move into the primary loop. This implied some new technology in building/operating rods and in measuring hydrogen mixed with vapor. The idea came 30 year before the Fukushima event when the importance of H2 production was confirmed. The modified facility would have been suitable to produce data to validate computer codes (the idea would have made the PIPER-ONE one of the most important facilities in the world … but the project was not funded…). The PIPER-ONE loop was used for an International Standard Problem (ISP) by Organization for Economic Cooperation and Development (OECD) / Nuclear Energy Agency (NEA) / Committee on the Safety of Nuclear Installations (CSNI) during the middle of 80’s. The design and the operation of the loop constituted a milestone achievement in the area of nuclear thermal-hydraulics with main reference to the scaling.
DCMN NT
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/891693
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