ISO15589 1 2000E Feedback on CP AJ

8/18/2019 ISO15589 1 2000E Feedback on CP AJ

1/47


2/47


3/47


4/47


5/47


6/47


7/47


8/47


9/47


10/47


11/47

--- 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


12/47

--- 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


13/47


14/47


15/47


16/47


17/47

? But DWGB shielding can still occur when there are

adjacent pipelines or other buried structures!


18/47

? 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.


19/47

at least

(optional)


20/47

(optional)


21/47


22/47


23/47


24/47

.


25/47

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?


26/47

(using a buried dummy load, to prevent coating damage)

(if recommended by transformer manufacturer for new transformer)


27/47

(if any)

a


28/47

, 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


29/47

or used


30/47


31/47


32/47


33/47


34/47


35/47


36/47


37/47


38/47


39/47


40/47


41/47


42/47


43/47


44/47


45/47


46/47


47/47

Documents

ISO15589 1 2000E Feedback on CP AJ