Stellite steam erosion
Stellite steam erosion
(OP)
Please relate any experience on damage mechanisms to Stellite 6 on valve seats and plugs if the valves are passing subcooled water at 300 degrees C and 155bar? The downstream side of the valve is at STP thus the liquid flashes to steam. The environment is typical to a nuclear 900MW PWR reactor primary circuit Power Operated Relief Valve.





RE: Stellite steam erosion
you need to be more specific about the valve you are using, it is not a service that merits a generic answer
RE: Stellite steam erosion
BTW, since you're dealing with the primary-side, don't you have concerns with cobalt-reduction in valves (for radiation reduction)?