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Corrosion risks and potential risk mitigations (Corrosion Risks (Import…
Corrosion risks and
potential risk mitigations
Corrosion Risks
Import Flow
BoL
WITH
CI carryover
Available corrosion allowance
adequate where CI can protect the line
Improve understanding of how
the CI moves through the line
and to what extent it can provide protection.
If sufficient length can be protected
No further actions
Further work?
Perform other BoL recommended work
BoL due to
condensation falling
no CI
Dehydration >99% required
Assume <1hr residence time
ToL due to condensation
Current dehydration
avail more than adequate
No actions req
Export Flow
ToL due to condensation
Current dehydration
avail more than adequate
No actions req
BoL due to
condensation falling
No CI
Current dehydration avail adequate
--Assuming residence time <1hr
Further work
Calculate flow conditions
which can lead to enough condensation
to cause pooling
If
calculated conditions not too onerous
implement further controls.
Testing of residence time and corrosion caused
Recalc req avail
Increase dehy avail to meet recalc value.
Available wet days can be monitored more accurately with data on residence time.
Can increase required dehy avail to meet calculated value
Holds risk of residence time >1hr.
For import, isolation of pipe during production exceedance may minimize production impact