Standard Guide for Examination and Evaluation of Pitting Corrosion

Importancia y uso:

4.1 It is important to be able to determine the extent of pitting, either in a service application in which it is necessary to predict the remaining life in a metal structure, or in laboratory test programs that are used to select the most pitting-resistant materials for service. The purpose of the study is crucial in determining the appropriate examination and evaluation steps.

4.2 Some typical purposes of laboratory tests include, but are not limited to, evaluating performance of alloys, determining whether an alloy is resistant to the environment, evaluating how environmental conditions including corrosion inhibitor affect or prevent pitting, and evaluating whether a lot of metal is sufficiently resistant for its use in a particular application or environment.

4.3 Some typical purposes of field studies include, but are not limited to, determining if pits are likely to grow and cause leak or release of process fluid, and assisting a determination of whether to replace or repair damage from pits (remaining life assessment).

Subcomité:

G01.05

Referida por:

G0161-00R18, C1187-20A, G0001-03R17E01, G0107-95R20E01, G0078-20, G0071-81R24, G0071-81R24, G0217-16R22, G0052-20, G0199-09R20E01, G0208-12R20, G0016-13R24, F1110-09R20, G0162-23, G0184-06R20E01, G0109-23, G0087-02R23, G0170-06R20E01, G0185-06R20E01, G0202-12R20, G0033-99R20, G0001-03R17E01, G0031-21, G0050-20, F2111-22, G0150-18R24, G0157-24, G0111-21A, D6208-07R20, F3268-18A, C1617-24, G0189-07R21E01, F3044-20, G0048-11R20E01

Volúmen:

03.02

Número ICS:

77.060 (Corrosion of metals)

Palabras clave:

extreme value statistics; metal penetration; metallographic examination; nondestructive inspection; pit density; pit depth; pit morphology; pitting corrosion; profilometry; visual inspection;