Life Expectancy of Steel Casing Pipe

[cvg]

Doing a jack and bore in Phoenix, Arizona. City of Phoenix is concerned about the life expectancy of 48" Steel Casing Pipe. The City is requesting a life expectancy of 75 years. Field resistivity is 4711 (ohm/cm). Will a 1/2" thick casing pipe be thick enough?

 

[LeoSC]

I found this reference that may help you. Note caveat regarding unreviewed paper.

http://www2.umist.ac.uk/corrosion/JCSE/Volume5/

Preprints/V5Preprint9.pdf

I hope this helps.

 

[semo]

Something to investigate is cathodic protection. It will require maintenance (replacement of the anodes) over time; but, saves the casing.