Electro-chemically active elements, such as excess oxygen, dissolved in the coolant stream can cause inter-granular stress corrosion cracking (IGSCC) in the reactor vessel and piping systems. This can result in additional outage time and increased costs for reactor internal replacements or repairs. The initiation of IGSCC can be mitigated by both injecting hydrogen to neutralize the free oxygen and by monitoring the electrochemical corrosion potential (ECP) in various locations.
- A stainless steel ECP probe for measurements without hydrogen injection
- A platinum ECP probe for measurements during hydrogen injection
- Additional ECP probes have been designed and manufactured for special applications, such as stainless steel and carbon steel
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