Internal corrosion issues with Ductile iron pipe are a far different ballgame than external corrosion. External corrosion requires more ‘partners in crime’ to occur, and if just one of the required four components is missing, you won’t have corrosion. Internal corrosion can, and often is, simply the result of an aggressive fluid being transported within the pipeline. This presentation covers:
- Common potential internal corrosion mechanisms – bacterial and/or chemical,
- tuberculation and the role cement mortar linings play in preventing it,
- special linings available to effectively combat internal corrosion,
- surface preparation differences between various special lining options,
- storage & warranty differences among various special lining options, and
- how to determine if a special lining is needed.
