Feeder Thinning Rate Assessment near the PHT Headers A Proposal to Eliminate PIP Wall Thickness Inspection Near Headers
Why this work is in the frame
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Bibliographic record
Abstract
The purpose of this paper is to perform a wall thinning assessment of past Periodic Inspection Plan (PIP) inspections near the Primary Heat Transport (PHT) headers at Ontario Power Generation (OPG) nuclear units, including Pickering and Darlington stations.The assessment carries out the evaluation of thinning rates and the comparison of projected wall thickness against the acceptable values in the area of interest.There is strong evidence that wall thinning near headers is insignificant and there is a large margin to ensure fitness for service to End of Life (EoL).A proposal was made to regulator to revise PIP to exclude wall thickness inspection near headers for Pickering and Darlington feeders in future outages in order to optimize inspection scope and resources while meeting the CSA N285.4 objectives and requirements.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.002 | 0.004 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it