AC Mitigation Requirements: A Parametric Analysis
Bibliographic record
Abstract
Abstract This paper presents a parametric analysis in which required mitigation wire length is determined for a pipeline subjected to magnetic field induction from a nearby high voltage transmission line, during load conditions. The effects of the following variables on induced voltages and mitigation requirements are studied: length of parallelism, separation distance, transmission line cross-sectional configuration, type of static wire, soil resistivity, load current magnitude, and pipeline/transmission line crossings. The goal is to provide the reader with a means to estimate mitigation requirements before a detailed study is performed. In the scenarios studied, which are based on a reference case consisting of a 10-mile (16.1 km) parallelism between a well coated 24" (61 cm) pipeline and a 230 kV transmission line carrying a load current of 1000 A, the required length of zinc anode ribbon, which provides the mitigation, varies from 0 to 1320 feet (402 m). Note that this does not include the length of ribbon that might be required to protect exposed pipeline appurtenances, although this requirement is discussed in the paper, nor does it include the length of ribbon that would be required to protect the pipeline coating from damage during fault conditions. Fault conditions will be the subject of a subsequent paper.
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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 | 0.001 |
| 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) | 0.003 | 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".