Source: http://religiondocbox.com/Buddhism/95842232-Simon-coenen-federal-agency-for-nuclear-control-opleidingsdag-alara-bvs.html
Timestamp: 2020-07-10 10:18:16
Document Index: 583008033

Matched Legal Cases: ['Art. 20', 'art. 26', 'art. 23', 'art. 30', 'Art. 25', 'Art. 30', 'Art 51', 'Art 53', 'Art 53', 'Art. 27', 'Art. 29', 'Art. 30', 'Art. 30', 'Art. 30', 'Art. 30', 'Art. 30', 'Art. 37', 'Art. 23']

Simon Coenen Federal Agency for Nuclear Control Opleidingsdag ALARA BVS - PDF Free Download
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1 Regulatory Aspects of ALARA Simon Coenen Federal Agency for Nuclear Control Opleidingsdag ALARA BVS
2 Regulatory Aspects of ALARA Introduction General Principles ALARA Programme in Regulatory demand Practical Implementation : some examples Future Conclusion
3 Introduction ALARA is a general concept Aiming to reduce radiological hazards to Workers Public Environment Taking into account other considerations like Economic Technical & Practical Social Integral part of overall safety programme and safety culture Not easily translated into «regulatory text»
4 Regulatory Approach demands for ALARA Programme ALARA Programme to be implemented on-site Commitment of all staff (Top-Down) Dedicated staff ALARA Manual or Procedures Education & Training ALARA Organisation Health Physics Service which reports to upper management Regular review of ALARA programme Elements of this ALARA programme are imposed by Royal Decree (20th July 2001) Specific requirements in licence
5 General Principles (Royal Decree 20th July 2001 Chapter III, Art. 20 : General Protection) Royal Decree of 20th July 2001 General Regulation for the Protection of the Population, the Workers and the Environment against the Danger of Ionising Radiation Justification of each activity Before licensing : part of license application Review by FANC: possible exclusion of activities Optimisation as low as reasonably achievable FANC can impose dose constraints for each source, activity or manipulation Limitation of effective doses For workers For public
6 Elements of ALARA Programme in Royal Decree (1) Commitment of staff (art. 26) Comply to regulations No unnecessary exposure Notify problems Dedicated Staff Health Physics (art. 23) Internal department for class I utilities Aangestelde voor bewaking / Préposé à la surveillance (art. 30.4) Deputy health physics For each controlled area Assure safety and protection measures
7 Elements of ALARA Programme in Royal Decree (2) Education & Training for all staff (Art. 25) Renewed 1x/year, job change, new technology, Education & Training for specific persons/tasks Aangestelde voor bewaking/préposé à la surveillance (Art. 30.4) Experts medical radio physics (Art 51.7) Initial training Permanent education Permanent education for medical doctors, dentists, veterinary doctors (Art 53.1) Training for medical assistant personnel (Art 53.2) Initial training Permanent education Experts health physics Class I Class II
8 Elements of ALARA Programme in Royal Decree (3) ALARA Manual & Procedures Safety Factor (Art. 27) Distance Shielding of sources : < 0.02 msv/h at contact Shielding of workspace Avoiding contamination Sealed sources Lowest possible radio toxicity Minimise activity Avoid spread of radioactive substances Avoid loss/theft of radioactive substances Retrieval of radioactive substances Exact account of radioactive substances Workspace in accordance with activity, toxicity, physical and chemical properties Non-sealed sources only in appropriate workspace Methodology to avoid contamination of personnel Limit time of exposure
9 Elements of ALARA Programme in Royal Decree (4) ALARA Manual & Procedures Protection of Workspace (Art. 29) Controlled areas designed to cope with external hazards (fire, explosion, water) Easy evacuation Clear separation with other spaces Individual protection of personnel (Art. 30) Controlled access (Art. 30.1) Prohibition for food, drinks, smoking, cosmetics, (Art. 30.2) Adapted (personal) protective equipment (Art. 30.3) Individual adapted dosimetry (Art. 30.6) Nominal (legal) dosimeter Extremity dosimeters Alarm dosimeters Same protection for external workers (Art. 37 ter-quinquies)
10 Elements of ALARA Programme in Royal Decree (5) Health Physics Department (Art. 23) Responsible for the application of and control over the regulatory demands Head of Health Physics department : Expert Class I or Class II ALARA Organisation and review for Class I facilities Specific demand in license To be managed and controlled by Internal Health Physics department Supervised and reviewed by Authorised Inspection Organisation ALARA Organisation and review for Class II facilities To be managed by Health Physics
11 Practical Implementation of ALARA by FANC During Licensing Examination of justification principle Examination of protection measures Workspaces Waste treatment Etc Specific requirements in issued license During Facility operation : Control & Surveillance Periodic inspections by Authorised Inspection Organisations Control of elements of ALARA programme Specific inspection campaigns by FANC such as Hospital campaign (education & training of medical assistant personnel) Class II facilities with large sources and cyclotrons Industrial radiography with gamma sources Periodic contacts with major facilities
12 Practical Implementation of ALARA by FANC : licensing examples Private collection of radioactive sources : no justification Hospitals Maximum allowed activity per isotope Exact inventory of sources Construction materials in hot lab : smooth materials for easy decontamination Maximum allowed energy for accelerators Cyclotrons for production of medical isotopes Maximum allowed energy Exact inventory of sources Storage and treatment methods of isotopes Control of induced radioactivity Release limits Industrial radiography with gamma-sources Specific conditions to avoid loss/theft of sources Specific procedures in case of malfunctioning device Highly Active Sealed Source Record sheet
13 Practical Implementation of ALARA by FANC : control & surveillance examples Hospitals : Systematic inspection campaign with specific attention to Individual user s license Education & training of medical assistant personnel Exact inventory of sources Procedures for storage and treatment of waste Class II facilities with large sources and Cyclotrons : systematic inspection campaign to increase safety measures Protection measures Access control Testing of safety related equipment Content and update of safety analysis report Industrial radiography with gamma-sources : intensive consultation with industry and in the field inspections Increase operational safety of radiography by Optimisation of dose constraints (preparation) Management of doses (performance) Analysis of doses (feedback and improvement)
14 Future Approach of FANC More attention to Dose Constraints Per type of application Risk and safety analysis Dosimetry Survey Identify activities with high exposures Develop together with the industry an ALARA programme to reduce doses Evaluate the programme and provide feedback to the industry (lessons learned) Develop specific training programmes for particular groups/activities Example of this new approach Industrial radiography
15 Example of new approach : Industrial Radiography Preparation DOSE CONSTRAINT ALARA PROGRAMME ANALYSIS PERFORMANCE Feedback Follow - up
16 Industrial Radiography : 10-points plan Dose constraints : ALARA Risk analysis safety analysis for each type of equipment Two operators: 1 for surveillance Procedures for normal operation and in case of accidents Inventory of sources in use Internal safety audit Education & Training of operators Specific training for surveillance Feedback to operators Replace where possible- radiation techniques by others
17 Conclusion ALARA = concept/philosophy and not easily to be put in regulations REGULATOR can stimulate ALARA by Including the ALARA concept, principles and approaches in its regulatory texts. Including specific points of attention and specific requirements in the facilities license. Drawing attention to ALARA related aspects during their inspections. Consulting and collaborating with the licensees to further enhance the application of ALARA in the field
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