iso15589 1 2000e feedback on cp aj
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--- neighboring pipeline length & CP transformer output (if applicable)
--- if the pipeline is not new, the design shall take into account the pipeline's historical data such as CP readings &
pigging reports showing locations of metal loss / corrosion
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--- Please define alloy content %s for "mixed metal components
--- Please define these 'certain conditions'.
--- Buried steel pipe sections shall not be grounded or electrically continous with copper grounding electrodes or buried copp
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? But DWGB shielding can still occur when there are
adjacent pipelines or other buried structures!
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? But DWGBs can still cause interference
currents!
It should also include anode lifespan & anode spacing calculations.
Detailed calculations should also include anode lifespan & anode spacing calculations.
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at least
(optional)
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(optional)
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.
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This paragraph seems contradictory. A line tap is technically a
oes this involve a WPQ & Charpy test on weld specimens? Is this a standard practice for Thermit Welds?
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(using a buried dummy load, to prevent coating damage)
(if recommended by transformer manufacturer for new transformer)
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(if any)
a
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, including intelligent pigging reports showing metal loss areas, if any.
1) Verify stations still exist and are easily identified/visible
2) Measure instant-off potentials At least annually
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or used
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