Ageing Management and Maintenance of Radioactive Material Transport Packages
Explore the development of a new safety guide focusing on ageing management and maintenance of packages for transporting radioactive material to ensure compliance with IAEA Transport Regulations. This document provides recommendations for package designers, manufacturers, users, and competent authorities involved in the safe transport of radioactive materials.
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Presentation Transcript
4.5 DS546 Ageing Management and Maintenance of Radioactive Material of Transport Packages TRANSSC led (Step 11) 58thMeeting of the Nuclear Safety Standards Committee (NUSSC) 19-21 November 2024 Alenka BUJNOVA Division of Radiation, Transport and Waste Safety Regulatory Infrastructure and Transport Safety Section International Atomic Energy Agency
Background Development of new Safety Guide on Ageing management and maintenance of packages for transport of radioactive material The IAEA Transport Regulations SSR-6 (Rev.1), 2018 Edition: introduced new requirements for shipment after storage and ageing of transport packages. retained requirements for maintenance of packaging. Lack of guidance on the topics; MS requested new safety guide for harmonised implementation of these requirements. TRANSSC-44 recommended the development of new safety guide. Need to document related practical experience and lessons learned by the designer, manufacturer, users and competent authorities to have common approach.
Overview of the Document Scope Objective DS546 ... covers all packages containing .. to provide recommendations on ageing management and maintenance of transport packages in order to ensure compliance with the IAEA Transport Regulations. radioactive material (i.e. excepted packages, Type IP-1, Type IP-2 and Type IP-3, Type A packages, Type B(U) and Type B(M) packages, and Type C packages, including packages containing fissile material or uranium hexafluoride (UF6)),as defined in the Transport Regulations. .. covers all activities during the service life of transport packages, in which ageing management and maintenance are to be considered. .. a graded approach recommendations provided in this Safety Guide, commensurate with the type of package and its intended use (i.e. single transport, repeated use or shipment after storage). .. the recommendations are aimed at:package designers; manufacturers and owners of packagings and organizations responsible for their maintenance; owners of the radioactive contents of packages; users (consignors) of packages; organizations responsible for the storage of packages before shipment (i.e. shipment after storage); technical support organizations; and competent authorities with responsibility for the radioactive material. is applied to the safe transport of
Status of the Document 1. Resolution Table of MS comments posted on 10 Apr 2025 ( till 19 May) 2. Resolution Table of RCs comments posted on 2 June 2025 3. To be approved by: NUSSC 59 (12 June 2025) CSS 58 (Dec 2025) STEP 4 STEP 6 Oct 2023 Feb 2024 STEP 5 TRANSSC 50 (23 June 2025) RASSC 58 (24 June 2025) WASSC 59 (July 2025) Dec 2022 STEP 3 Jun 2024 STEP 7 May 2023 Mar 2024 STEP 9 STEP 11 STEP 14 6 Mar 2025 10 Jul 10 Nov 2024 Aug -Dec 2025 2026 Nov -Feb 2025 Jun -July 2025 STEP 8 STEP 10 STEP 12
10 July 10 Nov 2024 Member States Comments: Summary 407 comments received Analysis of type of comments: Editorial: 131 / 32 % Drafting, grammatical changes not affecting technical basis: 124 / 30 % Proposals that may affect technical basis: 135 / 33 % Proposals affecting whole draft (incl. structure or content): 12 / < 3 % Proposals for modifications due to SSR-6 Rev.2 changes: 4 / < 1 % Not related with the draft: 1 / < 1 % Australia Brazil Canada France Germany Italy Japan Switzerland UK US WNTI 40 5 50 42 32 11 61 25 10 23 108 Resolutions statistics after Step 9: Accepted: Accepted, but modified:135 Rejected: 189 33 % 84 46 % 79 % 21 %
Member States Comments: Summary (1/2) Changes due to SSR-6 Rev.2 were implemented (e.g. requirement for justification of considerations to ageing mechanisms for all packages requiring approval, not only for shipment after storage) Provided examples (table of scope setting for different types of packages) were moved from appendices to new annex. It was considered that remaining parts of appendices offer valuable information to the main text (e.g. structure of ageing management programme) Thorough review of proper and/or harmonised use of terms was done; e.g. spent fuel/spent nuclear fuel; package components/packaging components; transport/shipment; organization responsible for storage/operating organization of storage facility; and package/packaging however with the last one, it was recognised that sometimes it is not so much possible to distinguish between the two (common issue). Concept of graded approach was better specified with additional text.
Member States Comments: Summary (2/2) Types of comments that were rejected: Changes in scope X to include special form of radioactive material X to include non-physical ageing X to exclude excepted/IP-1 packages X shifting the original intention of paragraph or section Changes not in line with IAEA style manual Recommendations that were not considered as general practice in MSs Changes containing too much technical details
10 Apr 19 May 2025 SSC Member Comments: Summary Analysis of type of comments: Editorial: Clarification and consistency: General: New concept: 41 comments received 12 / 29 % 22 / 54 % 1 / 2 % 6 / 15 % NUSSC South Africa 1 RASSC China 1 Resolutions statistics: Accepted: Accepted, but modified: Rejected: TRANSSC Iran 5 21 / 51 % 71 % 8 / 20 % TRANSSC Japan 11 12 / 29 % TRANSSC WNTI 23 All comments were addressed, and resolutions were shared with RC Members There are no unresolved comments
SSC Member Comments: High Interest Consistency in text throughout the Safety Guide (cross references, recommendations) Consistency with SSR-6 Rev.1 and related Safety Guides in terminology and phrases Clarification of requirements on retaining (maintenance) documentation management system Clarification of environmental and operational conditions and importance of storage location Clarification on shielding performance measurements on loaded package
SSC Member Comments: Rejected Rejected new concepts or new drafting of text: X Introduction of Plan-Do-Check-Action (PDCA) cycle as approach to ageing management X Introduction of updatable service life of the package X Introduction of combination of ageing mechanisms X Introduction of inspections prior to use X Expanding Appendix II to include case studies for extreme environments Other comments rejected: X Duplications / clarification proposal already captured in the draft X Occupational safety recommendation
Action Requested Kindly asking NUSSC to approve the draft of DS546 to move to STEP 12 Endorsement by CSS and MTCD editing
Thank you. A.Bujnova@iaea.og
