Bibliographic record
Abstract
Cracks in close proximity may interact and lead to leaks or ruptures at pressures well below the predicted failure pressures of the individual cracks. Several industry organizations and standards, including CEPA, ASME, API, and British Standards provide guidance on the treatment of potentially interacting cracks. This guidance tends to be very conservative. This paper is a study of crack interaction, including a discussion of industry guidance, a critical review of failure pressure models, and a review of results of laboratory hydro-testing of pipe sections containing either in-service flaws or simulated flaws. In some cases the industry guidance and current failure pressure models provide inconsistent predictions, and this leads to uncertainty in the assessments used in routine crack management programs. The results of the hydro-testing are discussed in the context of both types of predictions. Understanding and predicting these interactions is important in maintaining an effective and efficient crack management program. The paper is aimed at engineers involved in integrity assessments and integrity management system process improvement.
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 machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.026 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.002 | 0.003 |
| Scholarly communication | 0.003 | 0.005 |
| Open science | 0.002 | 0.004 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.015 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".