Energi- Forsynings- og Klimaudvalget 2017-18
EFK Alm.del Bilag 227
Offentligt
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Offshore - pipelines
Inspections
How are they monitored?
 EFK, Alm.del - 2017-18 - Bilag 227: Henvendelse af 25/4-18 fra Wintershall om Nord Stream 2
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Construction – pressure test
All pictures from https://www.nord-stream.com/
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 EFK, Alm.del - 2017-18 - Bilag 227: Henvendelse af 25/4-18 fra Wintershall om Nord Stream 2
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Outside – Example Nord Stream AG
Pipeline Inspection Surveys
“ We conduct pipeline
inspections, collecting data via
acoustic and/or visual ROTVs,
ROVs and AUVs to determine
that the pipelines are in the
correct position, are supported
and if there is any risk of
damage.”
https://www.mmt.se/our-services/oil-gas/pipeline-inspection-
surveys/
MMT Sweden AB
Sven Källfelts Gata 11
SE-426 71 Västra Frölunda
Sweden
All pictures from https://www.mmt.se/
ROV = Remotely Operated Vehicle,
ROTV = Remotely Operated Towed Vehicle
AUV = Autonomous Underwater Vehicle
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 EFK, Alm.del - 2017-18 - Bilag 227: Henvendelse af 25/4-18 fra Wintershall om Nord Stream 2
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Inside – Example Nord Stream AG
Inspection pigs,
“…also referred to as in-line inspection
pigs or smart pigs, gather information
about the pipeline from within. The
type of information gathered by smart
pigs includes the pipeline diameter,
curvature, bends, temperature and
pressure, as well as corrosion or metal
loss. Inspection pigs utilize two
methods to gather information about
the interior condition of the pipeline:
magnetic flux leakage and
ultrasonics…”
https://www.rigzone.com/training/insight.asp?insight_id=310&c_id=
All pictures from https://www.nord-stream.com/
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