Bibliographic record
Abstract
Nuclear reactor of the CANDU nuclear power plant is composed of hundreds pressure tubes, which are pressure boundary of primary reactor coolant and connected to endfittings at each ends by rolled joint. The pressure tube material, Zr-2.5Nb alloy is known as susceptible material for Delayed Hydride Cracking(DRC), which is affected by hydrogen (and deutrium) concentration on the material and stress concentration by nominal stress and any kind of flaw that can be made during manufacturing or operating process. According to the Canadian experience for CANDU operation, the rolled joint region is one of most susceptible region for DRC because of higher hydrogen concentration and higher residual stress compared with the main body region of pressure tube. In this study, surface residual stress distributions in pressure tube rolled joint region are analyzed for several rolling variables using Finite Element (FE) method. Additionally, effects of residual stress on DRC initiation are evaluated.
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How this classification was reachedexpand
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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.020 | 0.018 |
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 itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".