ds468: remediation process for areas with residual radioactive … documents... · 2013-01-22 ·...
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IAEA International Atomic Energy Agency
WASSC Agenda Item 8.1
DPP for revision of WS-G-3.1
DS468: Remediation Process for Areas
with Residual Radioactive Material
G. Proehl and J. Rowat
Waste and Environmental Safety Section,
NSRW
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IAEA
Objective
Objective of this Safety Guide
• To provide guidance on implementing the
requirements for the remediation of areas
contaminated by past activities and accidents,
• The requirements being those in the BSS (GSR
Part 3) and safety requirements deemed
applicable in other IAEA safety standards.
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IAEA
Supersessions
Remediation Process for Areas affected by Past Activities
and Accidents, WS-G-3.1 (2007).
• Based upon Safety Requirements in
• Remediation of Areas Contaminated by Past Activities and
Accidents, WS-R-3 (2003).
• WS-R-3 has been superseded by
• Safety Requirements now found in GSR Part 3 (Section 5), and
• Applicable Safety Requirements from more recent waste safety
standards
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IAEA
Justification
• New formulation of Safety Requirements in
GSR-Part 3.
• Incorporate more guidance on policies and
strategies for remediation
• Strengthen guidance on involvement of
interested parties
• Incorporate experience gained in light of the
Fukushima accident
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IAEA
Links to other documents
• Fundamental Safety Principles (SF-1)
• General Safety Requirements:
• Part 1: Governmental, Legal and Regulatory Framework for Safety
(2010)
• Part 2: Leadership and Management for Safety Radiation
• Part 3: Protection and Safety of Radiation Sources: International
Basic Safety Standards - Interim Edition (2011)
• Part 4: Safety Assessment for Facilities and Activities (2009)
• Part 5: Predisposal Management of Radioactive Waste (2009)
• Disposal of Radioactive Waste (SSR-5).
• Decommissioning and Termination of Activities (DS450)
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IAEA
Overview
• Provide guidance on implementing the requirements for the
remediation of areas contaminated
• Past activities and accidents.
• Could cause prolonged radiation exposure.
• Area can include land, water bodies and industrial sites.
• Application
• Regulatory bodies, operators and others responsible for
remediating sites
• after an emergency exposure situation has been declared ended
• Not to facilities being under regulatory control and that may have
had emergencies that have contaminated small areas within the
facilities
6
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IAEA
Main topics
• Consistency with the new BSS for control of public and occupational
exposure in existing exposure situations
• Provide guidance on the derivation of radiological criteria (ref. levels for
exposures and for derived activity concentration in environmental media
• Communicating exposure or risks to the public in existing exposure
situations;
• Involvement of stakeholders and assimilate the findings of ICRP 111, if
applicable ;
• Dose assessment for exposure scenarios before and after remedial
action, and dose assessment for workers who carry out proposed
remedial actions;
• Integration of the optimization process in decision making in the
remediation process,
• Elaborate the necessity to develop realistic approaches for dose
assessment
• Licensing processes for resulting waste management after remediation 7
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IAEA
Main topics (cont.)
• Risk based approach to be applied to management of remediation
actions in existing exposure situations.
• Address protection of the environment
• Address the regulation and management of mixed residues
• Connection to decommissioning and radioactive waste
management,
• Include the relevant lessons learned from Fukushima;
• Guidance on issues related to the generation of large amounts of
waste with relatively low amounts of radionuclides;
• Explore the possibilities and limitations of clearance of waste
generated during the remediation
• Provide guidance on the prioritization of remedial options;
• Provide guidance on decision-aiding techniques.
8
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IAEA
Feedback
• The DPP was submitted on somewhat short notice
• Feedback on DPP for DS 468 was provided by:
• Germany
• Japan
• Ukraine
• USA
• Some comments were editorial improvements,
• Accepted without reservation.
• Among the remaining comments – focused on a specific
issue – none are rejected.
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IAEA
Germany: 16 comments on DPP for DS468
• 14 comments related to editorial issues and clarification
• List of IAEA documents to be considered in the development (C 8)
• Leadership and Management for Safety (DS456, future GSR Part 2)
• Decommissioning and Termination of Activities (DS450, future GSR Part 6)
• Application of the Concepts of Exclusion, Exemption & Clearance (RS-G-1.7)
• Classification of Radioactive Waste (GSG-1)”
• Waste management (C10)
• Implication of remediation for the generation of radioactive waste
• Address mixed waste, containing radiological and non-radiological
hazardous components
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IAEA
Japan: 22 Comments on DPP for DS468
13 comments related to editorial issues and clarification
• Specific comments
• More introductory material to be included in the guide than was
found in WS-G-3.1
=> Document would thereby be more useful to those wishing to
apply guidance (C1)
• Consideration and consistency with other documents:
• DS 432 (Radiation protection of the public and the environment) (C 8)
• Involvement of interested parties including Communication and Consultation
with Interested Parties (DS 460) ( C 2, 8)
• Expand issue on the “Management of radioactive waste”, address
in particular the generation of large volumes of waste with
relatively activity concentrations (C 6)
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IAEA
Japan: 22 Comments on DPP for DS468 (cont.)
• Address management of large volumes of waste (C 10)
• Explore re-use and clearance of contaminants and
wastes generated during the remediation (C 12)
• Specify the terms on remediation, decontamination and
clean-up (C13)
• Add discussion on decommissioning and on-site
remediation (C 15)
• Address on- and off site monitoring before and during
remediation (C21)
• Address explicitly the “remediation in Japan” (C 22)
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IAEA
USA: 13 Comments on DPP for DS468
• Ensure consistency (C 1, 2,5)
• With the revised BSS,
• With other safety guides currently under development
• With ICRP publications
• Address the transition phase
(C3)
• Discuss in detail ‘criteria’, ‘optimization during
remediation’, the application of a graded approach
(C 4, 6, 8, 9)
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IAEA
USA: 13 Comments on DPP for DS468 (cont.)
• Address the interaction of monitoring and remediation
(C7)
• Elaborate the importance of monitoring (C 10)
• Include Chernobyl experience (C11, 12 (item 1 and 2)
• Table of contents: Address explicitly the topics ‘source
and site characterization’, monitoring and modeling
(C 12 (item 3))
• Take NUREG/CR12-7029 into consideration (strategies,
monitoring, dose assessment) C13)
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IAEA
Ukraine: 3 Comments on DPP for DS468
• Include information about existing experience on
remediation in the main text of the document – not only in
the annex (C1)
• Include experience from Fukushima in the annex (C 2)
• Modify the title to: "Remediation Process for Areas,
affected by Past Activities and Accidents” (C 3)
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IAEA
Request
The request is for approval of the DPP for
DS468 for submission to CSS.
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IAEA 17
Thank you