Permeable Coatings and CP Compatibility
Bibliographic record
Abstract
Protective coatings applied to the external surface of line pipe are designed to protect the underlying steel from corrosion over the life of the installation. These coatings are usually used in combination with cathodic protection (CP) to ensure that the steel exposed by coating damage or defects remains protected. The ultimate success of this approach very much depends on the nature, performance and failure mode of the coating. Disbondment of a high impedance coating such as a polyolefin tape can block CP while allowing water access to the underlying steel. Corrosion and near neutral pH SCC can result. In contrast, pinholes or impact damage on coatings such as fusion bonded epoxy allow both CP and water to penetrate to the pipe surface. Coatings that become permeable in service such as asphalt enamels similarly allow protection of the pipe despite a general loss of barrier properties. Because no corrosion or environmentally assisted cracking occurs where adequate CP potentials are sustained, these coatings can be regarded as being “CP compatible”.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.007 | 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".