A Discussion on the Impact of CFC12 Emission Rate from XPS Insulation on Atmospheric Banks
Bibliographic record
Abstract
This report presents new information regarding emissions of CFC12 used to make extruded polystyrene foam products. Earlier reports identified a significant difference in emission rates from extruded polystyrene foam that are used to estimate the amount of the chlorofluorocarbon yet to be released from these materials — the banked amount. Since the estimated atmospheric lifetime of CFC12 is ∼100 years, it is very important to use an accurate release rate from extruded polystyrene foam in actual use to corroborate laboratory measurements. This report will provide evidence that CFC12 is emitted from extruded polystyrene foam more than an order of magnitude slower than some earlier reported rates, resulting in a bank of CFC12, yet to be released from the foam, potentially larger than previously estimated.
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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) | 0.001 | 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".