Security of Radioactive Sources in Radiation Facilities

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divided into five categories, with category 1 being the most significant radioactive source. Sources in categories 1 to 3 generally have the potential of giving rise to exposure sufficient to cause severe deterministic effects if they are uncontrolled. A severe deterministic effect is one that is fatal or life threatening or results in permanent injury that decreases the quality of life. The default/desired security levels and categories assigned for various sources/ practices are given in Table 3.1 which are based on implicit assumption of a threat posed by a person or group with serious intent to acquire the source. However, different circumstances or more detailed assessments may justify assigning a higher security level than indicated in this table. For example, one reason for doing this is that a specific threat assessment may reveal a facility with several sources or mobile sources to be more vulnerable, even though they may not be individually high activity sources, which may otherwise warrant a lower security level. TABLE 3.1 : SECURITY LEVELS BASED ON CATEGORISATION OF SOURCES Security Source Examples of practices level category A 1 Radioisotope thermoelectric generators (RTGs) Irradiators Teletherapy Fixed multibeam teletherapy (gamma knife) B 2 Industrial radiography High/medium dose rate brachytherapy C 3 Fixed industrial gauges incorporate high activity sources (e.g. level, dredger, conveyor) Well logging gauges D 4 Low dose rate brachytherapy (except those given against Category 5) Industrial gauges that do not incorporate high activity sources [e.g. Thickness/fill-level gauges, portable gauges (e.g. moisture/density)] Bone densitometers Static eliminators Diagnostic isotope generators 5 Low dose rate brachytherapy eye plaques and permanent implant sources (Positron emission tomography (PET) check sources, X- ray fluorescence (XRF) devices, Electron capture devices, Mossbauer spectrometry sources) Radiopharmaceuticals and other unsealed sources 11
In respect of practices not included in this table, users should seek advice from the Competent Authority on the applicable security levels. Unsealed sources are assigned Security Level D in view of the activities handled and the associated potential hazard. Decayed sources are generally assigned the same security level as originally assigned to them. 3.4 Security Levels and Security Objectives The objectives of the security functions, viz., detect, delay, response and security management apply differently to the different security levels. The detailed performance objectives against various security functions for each security level are given in Appendix-III. Security Level D corresponds to prudent security objectives that would be applicable to all facilities. As emphasised earlier, it must be noted that the security level determines the specific security measures that will meet the performance objectives for that level. These security measures are described in section 4. 12
Page 1 and 2: GUIDE NO. AERB/RF-RS/SG-1 GUIDE NO.
Page 3 and 4: Price Order for this guide should b
Page 5 and 6: guide may be acceptable, if they pr
Page 7 and 8: CONTENTS FOREWORD .................
Page 9 and 10: APPENDIX-XI : GUIDELINES TO PREPARE
Page 11 and 12: the public, in excess of the regula
Page 13 and 14: 2. SECURITY PRINCIPLES 2.1 Basic Pr
Page 15 and 16: act would be uncertain and that the
Page 17 and 18: immediately prepare a revised secur
Page 19: 3.3.1 Security Levels Applicable to
Page 23 and 24: (x) (xi) planned dates, routes and
Page 25 and 26: (b) (c) (d) (e) (f) the facility’
Page 27 and 28: (a) (b) (c) (d) Storage in a locked
Page 29 and 30: TABLE 4.1 : SUMMARY OF SECURITY MEA
Page 37 and 38: 5. RESPONSIBILITIES 5.1 General It
Page 39 and 40: (x) any unusual events that have a
Page 41 and 42: APPENDIX-I DOSE CRITERIA USED IN TH
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Page 45 and 46: APPENDIX-II CATEGORIES OF COMMONLY
Page 47 and 48: Source Activity handled (A) (TBq) D
Page 49 and 50: Source Activity handled (A) (TBq) D
Page 51 and 52: Notes: 1. It may be noted that as r
Page 53 and 54: posts and the local reporting or co
Page 55 and 56: through an uninterruptible power su
Page 57 and 58: performance against adversary capab
Page 59 and 60: Sub: (Note: To be printed on Radiat
Page 61 and 62: (h) (i) (j) (k) (l) (vii) (viii) (i
Page 63 and 64: Delay 1. Security objective: Provid
Page 65 and 66: Delay 1. Security objective: Provid
Page 67 and 68: Security measures: One identificati
Page 69 and 70: BIBLIOGRAPHY 1. The Industrial Radi
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ADVISORY COMMITTEE ON RADIOLOGICAL
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PROVISIONAL LIST OF REGULATORY DOCU
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Security of Radioactive Sources in Radiation Facilities

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