Predicting and Mitigating Corrosion Related Damage in Geothermal Facilities, Phase-I

Shirmohamadi, M. ; Bratt, S. ; Ridgely, J.

USDOE Idaho Operations Office, Idaho Falls, ID (United States)

关键词: Geothermal Fields;    Geothermal Legacy;    15 Geothermal Energy;    Corrosion;    Pitting;   

DOI  :  10.2172/769198
RP-ID  :  DOE/ID/13656
RP-ID  :  FC07-98ID13656
RP-ID  :  769198

美国|英语

来源: UNT Digital Library

【 摘 要 】

Corrosion related damage (CRD) is probably the most important and costly damage mechanism for components operating in geothermal fields. This problem is further complicated as steam chemistry in such fields changes continuously with season, time, and load. Unfortunately, such changes are not predictable. The problem is further complicated in the area where early condensate (first moisture) forms. The chemistry of these first droplets is significantly different from that of built steam and this, again, cannot be predicted with reasonable accuracy. Therefore, a formidable challenge facing the geothermal field operators remains in knowing the chemistry of the condensate and, more importantly, how it affects specific field equipment such as rotor, piping, valves, etc. This project showed that testing in such an environment is feasible and concluded that continuous monitoring of steam conditions is needed to detect and prevent conditions leading to CRD of components. This project also developed tools and techniques for continuous monitoring of corrosion potential and detection of pitting events.