ML25265A265
| ML25265A265 | |
| Person / Time | |
|---|---|
| Site: | 07103080 |
| Issue date: | 09/26/2025 |
| From: | Garcia-Santos N Division of Fuel Management |
| To: | Vierling R US Dept of Transportation (DOT), Office of Hazardous Materials Safety |
| Shared Package | |
| ML25265A263 | List: |
| References | |
| CAC A33010, EPID L-2025-DOT-0000 | |
| Download: ML25265A265 (1) | |
Text
Enclosure Request for Additional Information German Competent Authority Certificate No. D/4365/AF-96 Docket No. 71-3080 Revision No. 4 Model No. ANF-50 This request for additional information (RAI) identifies information needed by the U.S. Nuclear Regulatory Commission (NRC) staff (the staff) in connection with its review of the application.
The staff used the International Atomic Energy Agency (IAEA) Specific Safety Requirements No. 6 (SSR-6), Regulations for the Safety Transport of Radioactive Material, 2018 Edition, in its review of the application.
Each RAI describes information needed by the staff to complete its review of the application and to determine whether the applicant has demonstrated compliance with the regulatory requirements of 10 CFR Part 71.
RAI-Ma-1 Describe how the following aging mechanisms would be addressed to ensure that the packages components would be available to perform their safety function(s).
a.
Inspection equipment requirements (e.g., lighting and visual acuity requirements for performing visual exams) to ensure reliable inspections that can adequately detect and characterize indications of localized aging effects prior to component failure or loss of safety function.
b.
Acceptance criteria for aging effects (e.g., early-stage fatigue cracks, localized corrosion of stainless-steel components, chloride induced stress corrosion cracking (SCC), pitting, and crevice corrosion). Examples of visual indications that may indicate potential localized corrosion of stainless-steel components include the accumulation of atmospheric deposits such as salts, buildup of corrosion products, rust-colored stains or deposits, and surface discontinuities or flaws associated with pitting, crevice corrosion, and/or SCC.
c.
Surface cleaning requirements implemented to ensure that bare metal visual inspections of component surfaces are capable of detecting surface flaws, and for ensuring adequate removal of atmospheric deposits such as salts or other chemical compounds that may contribute to localized corrosion of stainless-steel components.
d.
Flaw evaluation methods (such as flaw sizing and flaw analysis methods) and associated flaw acceptance criteria that be used to determine whether components containing flaws are acceptable for continued service.
Per IAEA SSG-26, Paragraph 613A The design of the package shall consider ageing mechanisms. Currently, it is not clear how these mechanisms are considered in the Model No. ANF-50 ageing management program.
This information is requested to verify compliance with requirements of the IAEA SSR-6, 2018 Edition, Paragraph 613A.