DS468: Remediation Process for Areas with Residual Radioactive … Documents... · 2013-01-22 ·...
Transcript of DS468: Remediation Process for Areas with Residual Radioactive … Documents... · 2013-01-22 ·...
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
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.
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• WS-R-3 has been superseded by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
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
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)
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
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
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
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.
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
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)
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)
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)
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)
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)
IAEA
Request
The request is for approval of the DPP for
DS468 for submission to CSS.
IAEA 17
Thank you