Progress on Ruthenium Release and Transport under Air Ingress Conditions
Bibliographic record
Abstract
Summary A particular concern in the event of a hypothetical severe accident is the potential release of highly radiotoxic fission product (FP) isotopes of ruthenium. The highest risk for a large quantity of these isotopes to reach the containment arises from air ingress following vessel meltthrough. One work package (WP) of the SARNET Source Term topic is producing and synthesizing information on ruthenium release and transport with the aim of validating or improving the corresponding modelling of the ASTEC code. The WP includes reactorscenario studies that can be used to define conditions of new experiments. The experimental database currently being reviewed includes the following programmes: AECL Experiments conducted on fission product release in air; results are relevant to CANDU loss of endfitting accidents; VERCORS te sts on F P r elease an d tr ansport c onducted b y C EA i n c ollaboration wi th IRSN a nd E DF; a dditional t ests m ay p otentially b e c onducted i n m ore o xidizing conditions in the VERDON facility; RUSET tests by AEKI investigating ruthenium transport with and without other FP simulants; Experiments by VTT on ruthenium transport and speciation in highlyoxidizing conditions.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".