Instrumentation for measurement of the effectiveness of vapor corrosion inhibitors
- Rohrback Cosasco Systems, Santa Fe Springs, CA (United States)
- Cortec Corp., St. Paul, MN (United States)
Corrosion damage to process instrumentation, computer systems and electrical switch gear due to corrosive environments is frequently being controlled by the use of vapor corrosion inhibitors (VCI). Additionally, these inhibitors are used to protect products that are being packaged for storage and/or shipment, and for lay-up of major equipment systems. Typically, the evaluation of their effectiveness has been by utilizing weight loss coupons or by direct observation of the protected surfaces. Neither technique provides a timely indication loss of protection due to consumption of the VCI or is amenable to remote monitoring. A more serviceable technique utilizing thin-film electrical resistance corrosion sensors with relatively low cost instrumentation has been developed. This technology offers the advantages of continuous monitoring of the potentially corrosive environment as well as the capability to forecast the need for additional VCI without risking damage or deterioration of the protected products or equipment. Results are presented from operational experience within a chemical laboratory environment as well as test results obtained within a test chamber where different corrosive gases and VCIs were evaluated.
- OSTI ID:
- 128681
- Report Number(s):
- CONF-950304--
- Country of Publication:
- United States
- Language:
- English
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