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REMOVAL OF CONCRETE LAYERS FROM BIOLOGICAL SHIELDS BY MICROWAVES

Objective

THE REMOVAL OF THE ACTIVATED LAYER OF THE REINFORCED CONCRETE BIOLOGICAL SHIELD OF A NUCLEAR POWER STATIONS. THE MAIN OBJECTIVES OF THIS RESEARCH ARE :

- TO UNDERTAKE A SERIES OF STUDIES AND TRIALS IN ORDER TO ASSESS THE APPLICATION OF MICROWAVES IN THE CONTROLLED DEMOLITION OF CONCRETE BIOLOGICAL SHIELDS OF NUCLEAR REACTORS,
- TO UNDERTAKE A FEASIBILITY DESIGN AND COST STUDY OF A REMOTELY OPERATED PROTOTYPE BREAKER BY MICROWAVE ACTION.

FOR THIS, FORMER WORK ON MICROWAVE CONCRETE SPALLING WILL BE REASSESSED, AND A SERIES OF LABORATORY TRIALS ON IMPORTANT PARAMETERS, SUCH AS APPROPRIATE POWER AND FREQUENCY, USEFUL APPLICATORS ETC., WILL BE UNDERTAKEN. THE RESULTS OF THESE PARAMETRIC STUDIES WILL BE APPLIED TO LABORATORY TESTS INTO SPALLING THE TOP 150-200 MM SECTION OF A REACTOR REPRESENTATIVE CONCRETE BLOCK.

THE STUDY WILL RESULT IN THE CONCLUSION WHETHER CONCTROLLED REMOVAL OF RADIOACTIVE CONCRETE LAYERS BY THE APPLICATION OF MICROWAVES WILL HAVE A REALISTIC POTENTIAL FOR LARGE -SCALE APPLICATION TO BIOLOGICAL SHIELD OF NUCLEAR POWER PLANTS.

B.1. DETAILED LITTERATURE SEARCH ON EXISTING MICROWAVE TECHNIQUES.

B.2. THEORETICAL ANALYSIS AND COMPUTER MODEL STUDIES ON THE OPTIMISATION OF POWER AND FREQUENCY LEVELS.

B.3. STUDIES ON THE OPTIMISATION OF LAUNCHING TECHNIQUES FOR THE TRANSFER OF MICROWAVES TO THE CONCRETE WALL.

B.4. THEORETICAL ANALYSIS AND COMPUTER MODEL STUDIES ON THE EFFECT OF STEEL REINFORCEMENT ON THE INDUCTION HEATING.

B.5. LABORATORY-SCALE HIGH POWER TRIALS FOR SPALLING THE TOP 150-200 MM SECTION OF A REPRESENTATIVE CONCRETE BLOCK.

B.6. FEASIBILITY STUDIES FOR A DESIGN OF A REMOTELY OPERATED PROTOTYPE, INCLUDING COST ESTIMATIONS.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Building Research Establishment (BRE)
Address
Bucknall's Lane Garston
WD2 7JR Watford
United Kingdom