authorization and inspection of cyclotron facilities authorization for the decommissioning of the...
Post on 27-Dec-2015
235 Views
Preview:
TRANSCRIPT
Authorization and Inspection of Cyclotron Facilities
Authorization for the Decommissioning of the Facility
Authorization and Inspection of Cyclotron Facilities
Objective
To achieve an understanding of the authorization process and the procedures for its implementation in the decommissioning of cyclotron facilities.
Authorization and Inspection of Cyclotron Facilities
Contents
• The main and specific elements to be included in an application for Authorization
• Assessment of an application based on criteria established by the legislation, by regulation or the Regulatory Body.
• Establishment and use by the regulator of suitable procedures for the consistent assessment of applications.
• Criteria for granting, renewing, amending and revoking a license.
Authorization and Inspection of Cyclotron Facilities
License to decommission a cyclotron facility
At the end of its useful life, the facility should be
decommissioned and the building and the surrounding areas returned to uncontrolled use. Upon reaching
the decision to shut down the facility for the decommissioning, the licensee should apply for the
decommissioning license.
Authorization and Inspection of Cyclotron Facilities
DECOMMISSIONING OF A CYCLOTRON FACILITY (IRRADIATION ROOM)
Authorization and Inspection of Cyclotron Facilities
Application for a license to decommission a cyclotron facility
• Specific elements of the application:
the name and location of the cyclotron facility;the proposed nature of and schedule for the decommissioning;the land, buildings, structures, components, systems, equipment, radioactive and hazardous substances that will be affected by the decommissioning;
Authorization and Inspection of Cyclotron Facilities
Authorization and Inspection of Cyclotron Facilities
the nature and extent of any radioactive contamination at the cyclotron facility, including radiation dose rates;
the nature, quantity and activity of radioactive substances at the cyclotron facility;
the maximum quantities and concentrations of radioactive substances and hazardous substances that may be released into the environment;
the proposed measures to control releases of radioactive substances and hazardous substances into the environment.
Authorization and Inspection of Cyclotron Facilities
Segregation and labeling of components
Authorization and Inspection of Cyclotron Facilities
the anticipated maximum dose of radiation that may be received by any person as a result of the decommissioning;
the proposed responsibilities and qualification requirements for the workers; anda description of the planned state of the site upon completion of the decommissioning.
Authorization and Inspection of Cyclotron Facilities
Segregation of components for storage
Authorization and Inspection of Cyclotron Facilities
Characterize the operation. How long have radioactive substances and prescribed equipment been in use, where were they used, which ones were used and in what quantities? Consult old licenses. Plan for the transfer, removal, shipment and disposal of radioactive substances and prescribed equipment. Plan contamination monitoring and decontamination. Make allowance for radiation monitoring, dismantling and removal of equipment.
Authorization and Inspection of Cyclotron Facilities
Remove or deface all signs and labels including radioactive substance packages.
Conduct a final radiological survey and report to the Regulatory Body so that a decommissioning verification can be scheduled.
If applicable defer decommissioning until clearance levels are met!
Reduction or even
prevention of nuclear waste
Cooling periods of 100+ years needed
due to Eu-152
Authorization and Inspection of Cyclotron Facilities
Reduction of waste
Careful selection of appropriate materials;
Use of local neutron absorbers;
Remove concrete blocks for inner shielding wall;
Authorization and Inspection of Cyclotron Facilities
Walls of the accelerator vault are
activated!
Authorization and Inspection of Cyclotron Facilities
Assessment of the application
The application is assessed for completeness and
technical content and the license issued if all
regulatory and safety requirements are met.
Authorization and Inspection of Cyclotron Facilities
Renewal
A decommissioning license should be renewed prior to its expiration date. The licensee sends the application for license
renewal which should detail any modification of the data provided in the
original license application.
Authorization and Inspection of Cyclotron Facilities
Amendments and revocation
The regulatory oversight of the decommissioning activities is also planned and scheduled. Typically, an initial inspection upon issuing the license verifies that the operation of the cyclotron facility has ceased. Subsequent inspections may verify proper execution of the decommissioning plan. At those stages any modifications of the decommissioning plan may require the amendment of the license.
Authorization and Inspection of Cyclotron Facilities
A final inspection must be done upon completion of the decommissioning to verify that the land, buildings, structures previously parts of the cyclotron facility may be returned to non-controlled use. On the basis of the licensee’s request and the successful final inspection report, the decommissioning license is revoked.
top related