Pitting of 410 SS in seawater and condensate with CO₂
Samples of 410 stainless steel were exposed to aerated and deaerated solutions of artificial sea water and distilled water, with and without packer fluid additions, with a CO₂ atmosphere. Pitting rates were determined from autoclave exposures, and electrochemical parameters were obtained from potentiodynamic polarization curves. The studies showed that in deaerated solutions, packer fluid had a mild inhibiting effect on liquid phase pitting in both seawater and distilled water. Packer fluid increased the rate of attack only in aerated solutions of distilled water. However, vapor phase pitting rates in uninhibited seawater, whether aerated or deaerated, are high enough to have caused the rates of attack observed in the field.

Electrochemical Measurements of Localized and General Corrosion in LiBr
This work is relevant to a process design project that involves high capacity heat exchangers. The heat exchangers in question are slated to use a 65 percent LiBr solution as the heat transfer agent. The engineering question of concern is the compatibility of the LiBr fluid with the materials of construction of the heat exchangers. This report describes testing on candidate materials in LiBr fluid environments. The testing consisted of dynamic autoclave exposures and electrochemical tests. The autoclave tests are discussed in a separate report. This report covers only the electrochemical tests.

Pitting Evaluation of 316L Tubing in Injected Water Environments
Pitting has been observed on a string of 316L injection tubing that is used to inject waste water. The pitting is not severe, but is sufficiently rapid to eventually cause perforation of the pipe and subsequent replacement. The cause of pitting is thought to be associated with one or more fluids that are caused in conjunction with stimulation practices. Some five different chemical formulations (including the waste solution) are suspect. Electrochemical tests were performed to ascertain the cause of pitting and to recommend possible solutions.

Ammonium Bisulfite Oxygen Scavenger
This report provides a technical opinion on the use of ammonium bisulfite oxygen scavenger in conjunction with stainless and nickel base piping . The pipe in question is that which will be used to inject a Brine as part of a reclamation project. Little data exist on the specific effects of ammonium bisulfite on corrosion of stainless steels. Removal of oxygen is know to be beneficial to prevent corrosion of steels, however, its effect on stainless materials could be detrimental. Because of this possibility, a series of electrochemical tests to ascertain the influence of ammonium bisulfite on alloy performance were conducted.