Determining the suitability of materials for disposal at sea

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under the London Convention 1972: A radiological assessment

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stron

procedure

2492

ID

International Atomic Energy Agency

2003

rok

CONTENTS

1. INTRODUCTION 1

2. GUIDANCE FOR DETERMINING WHETHER CANIDATE MATERIALS ARE DE MINIMIS IN THE

CONTEXT OF THE LONDON CONVENTION 1972 .. 3

2.1. Stepwise evaluation procedure 3

2.2. Purpose of a specific assessment 4

2.3. Environmental protection ..4

2.4. Application of the waste assessment guidance 5

3. THE SPECIFIC ASSESSMENT PROCESS.. 6

3.1. Introduction ..6

3.2. Radiological criteria .6

3.3. Data collection. 8

3.4. Screening stage of the specific assessment process.. 8

3.4.1. Considerations . 8

3.4.2. Exposure pathways 9

3.4.3. Screening procedure for calculating individual dose 9

3.4.4. Screening procedure for calculating collective dose . 10

3.4.5. Comparison with radiological criteria for exemption 12

3.5. Detailed assessment stage of the specific assessment process . 13

3.6. Accounting for the contribution of progeny in radioactive decay chains of natural

radionuclides.. 13

APPENDIX I: PROCEDURE FOR ASSESSING INDIVIDUAL AND COLLECTIVE DOSES ARISING

FROM DISPOSAL AT SEA 19

APPENDIX II: PARAMETERS USED IN THE PROCEDURE FOR ASSESSING DOSES FROM

DISPOSAL AT SEA INCLUDING DEFAULT VALUES AND SUGGESTED INFORMATION

SOURCES 31

REFERENCES 43

ANNEX I: GUIDELINES FOR THE APPLICATION OF THE DE MINIMIS CONCEPT UNDER THE

LONDON CONVENTION.. 45

ANNEX II: EXAMPLE CALCULATIONS FOR SCREENING ASSESSMENT. 55

ANNEX III: INFORMATION ON CAUSES/SOURCES AND LABORATORY RADIOMETRIC

PROCEDURES. 61

CONTRIBUTORS TO DRAFTING AND REVIEW . 65