Publication Laka-library:
OECD Halden Reactor Project 1978 (1979)
| Author | NEA |
| Date | 1979 |
| Classification | 2.08.9.90/02 (NORWAY - FACILITIES) |
| Front | 
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From the publication:
FOREWORD This is the nineteenth annual Report on the OECD Halden Reactor Project, describing activities at the Project during 1978, the last year of the 1976-1978 Halden Agreement. Work continued in two main fields: test fuel irradiation and fuel research, and computer-based process supervision and control. Project research on water reactor fuel focusses on various aspects of fuel behaviour under normal, as well as load-follow and off-normal transient conditions. In 1978, participating organizations continued to submit test fuel for irradiation in the Halden boiling heavy-water reactor, in instrumented test assemblies designed and manufactured by the Project. Work included analysis of the impact of fuel design and reactor operating conditions on fuel cladding behaviour. Measurements were made of thermally- and irradiation-induced decalibration of in-reactor temperature measurements used for studies of fill gas conductance. Out-of-reactor tests approached completion on apparatus for measuring rod behaviour under flow starvation conditions. A model for fission gas release as a function of burn-up was developed. Fuel performance modelling included characterization of thermal and mechanical behaviour at high burn-up, of fuel failure modes, and improvement of data qualification procedures to reduce and quantify error bands on in-reactor measurements. Instrument development yielded new or improved designs for measuring rod temperature, internal pressure, axial neutron flux shape determination, and for detecting cladding defects. Work on computer-based methods of reactor supervision and control included continued development of a system for predictive core surveillance, and of special mathematical methods for core power distribution control. Operator-process communication studies developed guidelines for use of colours and symbols in colour display, while the work on developing a system for interactive plant disturbance analysis reached an advanced phase. Studies were undertaken of software reliability and on the structure of process computer hardware. As stipulated in the Halden Agreement, this Report has been approved by the Board of Management of the Project. D. Lummerzheim Chairman Halden Board of Management
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