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Record W4409501304 · doi:10.5006/c2023-19170

A Data Driven Approach to Improving Suitability of External Corrosion Risk Algorithm for Pipelines with Unique Operating Conditions - a Case Study of Hot Bitumen Pipelines

2023· article· en· W4409501304 on OpenAlex
Cathy Lee Tetreault, Qing Lan

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicStructural Integrity and Reliability Analysis
Canadian institutionsSuncor Energy (Canada)Dynamic Systems Analysis (Canada)
Fundersnot available
KeywordsPipeline transportCorrosionComputer scienceAsphaltPetroleum engineeringAlgorithmEnvironmental scienceEngineeringMaterials scienceMetallurgyEnvironmental engineering

Abstract

fetched live from OpenAlex

Abstract Bitumen is a solid or semi-solid high-viscosity liquid petroleum product at room temperature. The hot bitumen line discussed in this paper was uniquely designed to transport product at temperatures typically ranging from 140 to 149 degrees Celsius (284-300°F), preventing the application of an anti-corrosion external coating, which is ineffective at such temperatures. In this case, polyurethane foam insulation was used and an integrated moisture detection surveillance system for external moisture infiltration was installed for the long-term integrity of the bitumen line. Inline inspections are used to identify external corrosion where insulation degradation may occur. Due to the unique properties of the pipeline in the study, the conventional method to assess the risk of external corrosion required further consideration. This paper will provide an example of how the conventional method of assessing external corrosion risk was modified to better suit a buried insulated pipeline through a series of additional environmental data inputs, validated with ILI results, to improve the predictive capability of the inferential external corrosion threat model.

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.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.240
Threshold uncertainty score0.998

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.039
GPT teacher head0.298
Teacher spread0.259 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it