Shroud electrochemical potential monitor

Details Shroud electrochemical potential monitor Shroud electrochemical potential monitor

1994-05-23

1995-11-07

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

376305, 376249, 376256, G21C 1700

Patent

active

054652782

ABSTRACT:
A method and an apparatus for measuring the degree of intergranular stress corrosion cracking protection in the area of the core shroud weldments. Electrochemical potential sensors are attached to the shroud wall and the upper core spray line at locations near the actual weld surface of concern to ensure the accuracy of the electrochemical potential measurements. A working electrode doped or coated with noble metal and a reference electrode are implanted into the reactor core shroud. A throughhole is drilled or machined into the shroud wall at an elevation just below the top guide support ring, i.e., near the core shroud weldments. Then a plug containing the working and reference electrodes is inserted into the throughhole.

REFERENCES:
patent: 4179349 (1979-12-01), Park
patent: 4966746 (1990-10-01), Richardson et al.
patent: 5009105 (1991-04-01), Richardson et al.
patent: 5135709 (1992-08-01), Andersen et al.
patent: 5217596 (1993-06-01), Indig et al.
patent: 5323429 (1994-06-01), Roarty et al.

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