Table 2 Classification of dataset.

Basic data

Ontological data

Pipe performance data

Pipeline performance data

Pipe qualification data

Pipe quality assurance

Production data

Pipe characterisation data

Piping design data

Pipeline construction data

Pipeline operating process conditions

Safety device information

Installation data

Laying environment survey data

Environmental corrosion test data

Pipe laying environment

Pipeline soil environment

Pipeline air environment

Pipeline surroundings

Ground activity level

Normal surface devices and protection

Pipeline structure

Geometric dimensions

Exterior inspection

Surface environment along pipelines

Crossing the pipeline

Other inspections

Information review

Macro-inspection

Operational data

Welding process parameters

Welding process evaluation

Comprehensive inspection data

Detection data

Pipeline commissioning records

Pipeline anomaly records

Pipeline inspection and monitoring records

In-pipe gas logging

Pipeline operation process records