Electrochemical Corrosion Potential (ECP) Probes

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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.

Product Overview

GE recommends that BWRs use detectors that accurately monitor ECP when hydrogen injection is turned off, as well as when hydrogen is being injected. At present, many plants utilize a system that can monitor data from two different types of probes:

  • An iron/ iron oxide 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. If you have a special request please, contact your local GE representative.

Since GE supplies the BWR fleet with LPRMs, we have designed and manufactured special ASME code LPRMs with multiple ECP probes.

GE has installed ECP probes on various ASME code flange assemblies, including reactor recirculation lines, bottom head drain lines, reactor clean up lines, and other flange locations. Certain detectors can also be installed as cartridge assemblies, utilizing GE’s Mitigation Monitoring System (MMS) that allows for simple replacement of probes – even during an operating cycle.

Downloads

  • Electrochemical Corrosion Probe Fact Sheet

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Contact one of these resources:

Commercial Operations
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Send email to: frederick.askins@ge.com

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Send email to: william.stringer@ge.com

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Send email to: warren.phelan@ge.com

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+1 330-963-2311
Send email to: dan.waltermire@ge.com

Call: Garrick Joseph at:
+1 330-486-0545
Send email to: garrick.joseph@ge.com

For existing order and shipment status
Call: Dianah McDonald at:
+1 330-963-2465
Send email to: dianah.mcdonald@ge.com