Community Research and Development Information Service - CORDIS


The High Flux Reactor (HFR) at Petten, The Netherlands, owned by the European Communities and operated by the Netherlands Energy Research Foundation, is a water-cooled and moderated, multipurpose research reactor of the closed-tank in-pool type, operated at 45 MW. Performance upgrading has comprised two power increases from 20 MW via 30 MW to 45 MW, providing more and higher rated irradiation positions in the tank. With the replacement of the original reactor vessel, the experimental capabilities of the reactor were improved. Better pool side facilities and the introduction of a large cross-section, double beam tube were implemented. Additional major installation upgrading activities consisted of the replacement of the primary and the pool heat exchangers, replacement of the beryllium reflector elements, extension of the overpower protection systems and upgrading of the nuclear instrumentation and the guaranteed power supply. Control room upgrading is in progress. A full new safety analysis is presented, as well as the introduction of a comprehensive quality assurance system. Continuous modernisation and upgrading also takes place of equipment for fuel and structural materials irradiations for fission reactors and future fusion machines. In parallel, a management structure for large irradiation programmes has been developed. Presently, the reactor is operating at about 275 full power days per year with an average utilisation of the irradiation positions of 70 to 80 %.

Additional information

Authors: AHLF J, JRC Petten (NL);SCHINKEL J, Netherlands Energy Research Foundation, Petten (NL)
Bibliographic Reference: Article: Nuclear Engineering and Design, Vol. 137 (1992) pp. 49-56
Record Number: 199310026 / Last updated on: 1994-11-29
Original language: en
Available languages: en
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