ML20049H354
| ML20049H354 | |
| Person / Time | |
|---|---|
| Issue date: | 02/18/2020 |
| From: | William Burton NRC/NRR/DNRL/NLRP |
| To: | |
| Burton W, NRR-DNRL 415-6332 | |
| Shared Package | |
| ML20049H344 | List: |
| References | |
| Download: ML20049H354 (2) | |
Text
SLR Document Changes: Extent of Selective Leaching Inspections Overview of purpose of change: Revise AMP XI.M33 to recommend a technical justification for using the extent of inspections in the GALL-SLR AMP when inspections during initial LR were not consistent with GALL Rev. 2 guidance.
Basis Document Revise NUREG-2221 to add a new row to Table 2-29 as follows:
XI.M33 Selective Leaching Location of Summary of Technical Bases for Changes Change Significant Changes GALL Rev. 2 recommended a sample size of 20 Detection of Revise AMP XI.M33 to percent (with maximum of 25 components) for Aging Effects recommend a technical the one-time inspections for selective leaching justification for using the conducted prior to the initial LR period. The staff extent of inspections in reduced the extent of inspections in GALL-SLR the GALL-SLR AMP (i.e., 3 percent with a maximum of 10 when inspections during components) based on several factors. One of initial LR were not these factors was that one-time inspections will consistent with GALL be performed prior to the initial LR period in Rev. 2 guidance.
accordance with GALL Rev. 2 guidance.
The staff recognizes that not all applicants for SLR were committed to GALL Rev. 2 during initial LR (e.g., pre-GALL plants). Therefore, the AMP was revised to recommend that a technical justification for using the extent of inspections in the GALL-SLR AMP is provided when inspections during initial LR were not conducted in accordance with GALL Rev. 2 guidance.
Document Changes:
SRP-SLR None.
GALL-SLR Add the following paragraph to the detection of aging effects program element:
Opportunistic and periodic inspections are conducted for components exposed to raw water, waste water, or soil, and for components in CCCW or treated water where XI.M33-3 plant-specific OE includes selective leaching in these environments The recommended extent of inspections in this AMP (i.e., 3 percent with a maximum of 10 components) is based on one-time inspections for selective leaching being performed prior to the initial LR period in accordance with GALL Rev. 2 guidance (i.e., 20 percent with maximum of 25 components for each population). A technical justification for using the extent of inspections in this AMP is submitted when inspections during the initial LR period were not conducted in accordance with GALL Rev. 2 guidance.
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SLR Document Changes: Extent of Selective Leaching Inspections For multi-unit sites where the sample size is not based on the percentage of the population and the inspections are conducted periodically (not one-time inspections), it is acceptable to reduce the total number of inspections at the site as follows. For two unit sites, eight visual and 2