Volume 2 - Atomic Energy Regulatory Board

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D.2 High Contrast Resolution Use high contrast resolution test phantom. Operating parameters : kVp : mAs : Slice thickness : Window width : Use high resolution algorithm. Result : Size of the smallest resolvable bar/hole pattern : ____________ mm (___________ lp/cm) Tolerance : At 10% contrast difference the size of the bar/hole pattern that could be resolvable should be 1.6 mm (≈ 3.12 lp/cm). Expected high contrast resolution : 0.8 mm (≈ 6.25 lp/cm) E. RADIATION DOSE TESTS E.1 Measurement of Computed Tomography Dose Index (CTDI) Use pencil ionisation chamber connected to a suitable electrometer or TLD, in conjunction with a head/body phantom. Measure the dose in the axial and peripheral cavities of the phantom for typical techniques. Operating parameters : kVp : 80 / 100 / 140 mAs : 100 Slice thickness : Result Head Body Axial dose : ———— mGy/mAs ————— mGy/mAs Peripheral dose : ———— mGy/mAs ————— mGy/mAs : ———— mGy/mAs ————— mGy/mAs : ———— mGy/mAs ————— mGy/mAs : ———— mGy/mAs ————— mGy/mAs Peripheral dose : ———— mGy/mAs ————— mGy/mAs (mean) CTDI c(central) : ———— mGy/mAs ————— mGy/mAs CTDI p (mean) : ———— mGy/mAs ————— mGy/mAs Weighted CTDI (CTDI w) = 1/3 CTDI c + 2/3 CTDIp CTDI w : ————— mGy/mAs 237
Tolerance : ± 20% of the quoted value (expected) ± 40% of the quoted value (maximum) F. RADIATION LEAKAGE LEVELS FROM X-RAY TUBE HOUSING AT 1 m FROM THE FOCUS Operating Potential : kV, mAs: mA X seconds (use maximum kV available in the machine for leakage measurement) Radiation leakage level (mR/hour) Front (Cathode) Back (Anode) Left Right Maximum leakage = —— mA minutes X —— Maximum leakage mR/h 60 X —— mA used for measurement Maximum radiation leakage from tube = —————— mR in one hour Result: Maximum radiation leakage at 1 meter from the focus for workload of 180 mAminutes in one hour is ___________ mR. Recommended upper limit: Leakage radiation level at 1 meter from the focus should be ≤ 115 mR in one hour. Date: Tested by: Signature Name Designation Company Signature of customer/user (Seal of the institution) 238
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GUIDE NO. AERB/RF/SG/G-3 (Vol. 2 of
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4. Performance of Safety System/Int
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APPENDIX-3D-I & II (Refer section 3
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APPENDIX-3D-III (Refer section 3.7.
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APPENDIX-3E (Refer section 3.2.2.5
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APPENDIX-3F (Refer sections 3.2.2.3
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1.6 Non-conformance Control and Cor
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and that of product specifications.
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4. Hazard Assessment (a) (b) (c) (d
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(h) 4. Safety Analysis (a) (b) (c)
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APPENDIX-4C (Refer section 3.3.4) F
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APPENDIX-4F (Refer section 3.3.2 to
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established which includes the arra
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conditions adverse to quality, such
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B.3.2 (d) report (ATR), and radiati
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for review and disposition of non-c
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Leakage radiation and other paramet
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- Dose rate profiles anticipated at
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other action to be taken (e.g. Ozon
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APPENDIX-5D (Refer section 3.4.1.4)
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(c) (d) (e) (f) (g) (h) (i) (j) Fac
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(b) Structural design: Seismic and
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20. Pre-operational radiation surve
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APPENDIX-5E (Refer section 3.4.1.4)
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APPENDIX-5F (Refer section 3.4.1.3,
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A.3.2 A.3.3 control of documents sh
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A.7. for review and disposition of
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B.3.2 (b) (c) (d) Document release
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(c) (d) (iii) (iv) (v) (vi) (vii) (
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APPENDIX-6B (Refer section 3.4.3.3)
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- Prevention of accidental fall of
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- Type of detectors used and their
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- Prevention of accidental fall of
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- Type of detectors used and their
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Provisions including adequate finan
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Price Order for this guide should b
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such as industrial safety and envir
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Betatron An electron accelerator in
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Manufacture, possess, store, use, t
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adioactive substances and has an ac
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Treatment Simulation Methods by whi
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CONTENTS FOREWORD .................
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3.3.8 Lead Time for Submission/Avai
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3.8.3 Construction ................
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3.15.2 Procurement and Registration
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FUNCTIONAL PERFORMANCE OF SAFETY SY
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GAMMA RADIATION PROCESSING FACILITY
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FACILITY FOR RADIATION TECHNOLOGY (
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ANNEXURE-33b APPLICATION FOR PROCUR
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BIOMEDICAL RESEARCH STUDIES ON HUMA
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ANNEXURE-59 APPLICATION FOR NO (3.1
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VOLUME - 2
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tools should conform to the relevan
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(c) (d) (ii) (iii) (iv) (v) (vi) (v
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APPENDIX-2B (Refer section 3.2.1.3)
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- Overhead water storage tank detai
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- Ozone concentration (maximum) ant
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APPPENDIX-2C (Refer section 3.2.1.4
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1. SAFETY SYSTEMS/INTERLOCKS (CONTD
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2. AREA/ZONE MONITORS S. No. 1. 2.
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3. EMERGENCY WATER LEVEL SENSOR (CO
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5 (i) SEARCH OPERATION - 1 (Hydraul
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S. No. 1. 2. 3. 4. 5. 6. Audio / Co
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the design, statement declaring com
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- Gravity/accidental fall of rack i
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5. Design Basis Accident Analysis A
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h. Quantity of activity : —— PB
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F. EMERGENCY PLANNING AND PROCEDURE
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(g) (h) 1.2 Organisation The need t
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(i) (ii) (iii) 1.3 Interfaces Ensur
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(iii) (iv) (v) (vi) All constructio
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Standards to which the accelerator
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(b) Accelerator facility (c ) Elect
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15. Details of Disposal Procedures
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Details of beam energy and current
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(h) Laboratory, workshops, stores e
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(i) (ii) (iii) (iv) (v) (vi) During
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4. Documentation Detail Design Deta
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8. Normal and Emergency Operation P
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4. Performance of Safety System/Int
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APPENDIX-3D-I & II (Refer section 3
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APPENDIX-3D-III (Refer section 3.7.
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APPENDIX-3E (Refer section 3.2.2.5
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APPENDIX-3F (Refer sections 3.2.2.3
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1.6 Non-conformance Control and Cor
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and that of product specifications.
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4. Hazard Assessment (a) (b) (c) (d
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(h) 4. Safety Analysis (a) (b) (c)
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APPENDIX-4C (Refer section 3.3.4) F
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APPENDIX-4F (Refer section 3.3.2 to
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established which includes the arra
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conditions adverse to quality, such
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B.3.2 (d) report (ATR), and radiati
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Leakage radiation and other paramet
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other action to be taken (e.g. Ozon
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(c) (d) (e) (f) (g) (h) (i) (j) Fac
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(b) Structural design: Seismic and
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Page 215 and 216: APPENDIX-5E (Refer section 3.4.1.4)
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Page 219 and 220: A.3.2 A.3.3 control of documents sh
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Page 223 and 224: B.3.2 (b) (c) (d) Document release
Page 225 and 226: for review and disposition of non-c
Page 227 and 228: (c) (d) (iii) (iv) (v) (vi) (vii) (
Page 229 and 230: APPENDIX-6B (Refer section 3.4.3.3)
Page 231 and 232: - Dose rate profiles anticipated at
Page 233 and 234: - Prevention of accidental fall of
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Page 237 and 238: APPENDIX-6D (Refer section 3.4.3.4)
Page 239 and 240: - Dose rate profiles anticipated at
Page 241 and 242: - Prevention of accidental fall of
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Page 245 and 246: Provisions including adequate finan
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Page 251 and 252: (ii) (iii) 1.4 Interfaces Ensuring
Page 253 and 254: 1.6 Accident statistics should be m
Page 255 and 256: adiation zone monitors and radiatio
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Page 259 and 260: 2. Pre-patient/post-patient collima
Page 261 and 262: APPENDIX-8C-I (Refer section 3.6.3)
Page 263: C.3 Measurement of Timer Linearity
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Page 269 and 270: 6. LINEARITY OF TIMER Operating par
Page 271 and 272: (c) (d) Recommended performance sta
Page 273 and 274: TABLE 3 : HVT AS A FUNCTION OF FILT
Page 275 and 276: 2.5 Locking facility of the compres
Page 277 and 278: 6. ACCELERATING VOLTAGE Result : Se
Page 279 and 280: Result : Coefficient of linearity f
Page 281 and 282: APPENDIX-8E (Refer section 3.6.3 )
Page 283 and 284: (THIS IS THE ONLY APPENDIX FOR INDU
Page 285 and 286: APPENDIX-10 (Refer section 3.18.1)
Page 287 and 288: APPENDIX-10 (CONTD.) (Refer section
Page 289 and 290: Containing Radioactive Substances
Page 291 and 292: LIST OF PARTICIPANTS DRAFT DOCUMENT
Page 293 and 294: ADVISORY COMMITTEE ON PREPARATION O
Page 295 and 296: PROVISIONAL LIST OF CODES, GUIDES A
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Volume 2 - Atomic Energy Regulatory Board

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