ASSESSMENT OF ENVIRONMENTAL, HEALTH AND SAFETY

1,12

MB

CONSEQUENCES OF DECOMMISSIONING RADIOISOTOPE THERMAL

39

stron

GENERATORS (RTGS) IN NORTHWEST RUSSIA

2502

ID

Helsinki Commission

2005

rok

Innhold

1 Introduction 5

1.1 Report structure 5

2 Background 6

3 Environmental Impact Assessments l 8

3.1 The Russian regulatory framework 8

4 RTG St G Structure 9

4.1 RTG Locations 11

4.2 Security and orphan sources 12

4.3 Theft and orphan sources 13

5 Russian imp impact assessments ct 15

5.1 Evaluation of the Russian impact assessment information 16

6 Independent Assessment t 19

6.1 Operational Risk Assessment 19

6.2 Radiological criteria used in assessments 19

6.2.1 Workers 19

6.2.2 Public 19

6.2.3 Environment 20

6.3 Radiological protection issues 20

6.4 Radiological Consequence Assessment 20

6.5 Key Accident Scenarios 21

7 Environmental Impact Assessment l 24

7.1 Environmental impacts related to normal decommissioning operations of RTGs 25

7.2 Environmental impacts related to accidental releases 26

7.2.1 Accidental releases to air 26

7.2.2 Accidental releases to soil 26

7.2.3 Accidental releases to sea 27

8 Alternative options e 28

8.1 Leave in Situ 28

8.2 Partial Dismantling and Disposal 28

9 Recommendations 30

10 Conclusions 32

References 34