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Direct current polarization test methods

Sometimes joint methods (e.g., CIPS and DCVG) are used. A worker walking along the pipeline records the distance as well as the on/off potential changes at small intervals of, e.g., 0.5 m, vs. a close CSE reference electrode. Measurements are supplemented with potential ON/OFF gradients in one or two directions perpendicular to the pipeline. The method requires synchronous switching off of all DC current sources polarizing the tested pipeline section. These types of measurements allow determination of the effectiveness of CP and detection of insulation leakiness (places of increased potential). Polaketal. (1997) point out that the applied methods of detection of insulation... [Pg.422]

See other pages where Direct current polarization test methods is mentioned: [Pg.20]    [Pg.2696]    [Pg.2673]    [Pg.215]    [Pg.372]    [Pg.107]    [Pg.42]    [Pg.524]    [Pg.112]    [Pg.160]    [Pg.436]    [Pg.223]    [Pg.196]    [Pg.277]    [Pg.314]    [Pg.124]    [Pg.1613]    [Pg.108]    [Pg.463]   
See also in sourсe #XX -- [ Pg.108 , Pg.109 , Pg.110 , Pg.111 , Pg.112 , Pg.113 , Pg.114 , Pg.115 ]



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Current directions

Current methods

Current polarity

Current polarization

Direct current polarization

Direct method

Direct tests

Direction Methods

Polar direction

Polarization methods

Testing current

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