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Bacterial count: A measure
of both aerobic and anaerobic bacteria possibly causing corrosion through a
combination of water sampling and bio-film sampling from coupons. Cultures may
Batch, Batching: Separated
volume of liquid within a liquids pipeline or of liquid within a gas pipeline.
Sealing (batching) pigs are typically used for separation.
Batching Pig: A utility
pig that forms a moving seal in a pipeline to separate liquid from gas media
or to separate two different products being transported in the pipeline. The
most common configurations of batching pigs are cup pigs and sphere pigs.
Bellhole: An excavation
to permit a survey, inspection, maintenance, repair, or replacement of pipe
B-Scan: A cross-sectional
display of a test object formed by plotting the beam path lengths for echoes
with a preset range of amplitude, in relation to the position of beam axis (in
ultrasonic testing), or the values of the measured magnetic field (with magnetic
flux leakage [MFL]), as the probe is scanned in one direction only.
Buckle: A partial collapse
of structural material due to excessive bending associated, in the case of a
pipeline, with soil instability, land slides, washouts, frost heaves, earthquakes,