 liquid
control rods |
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head
vessel substitution |
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SPND
assemblies |
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dismantling |
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valves
& advanced products |
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contacts |
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MP98
control rods system could be installed with advantages and benefits on
existing PWR when head vessel substitution has to be done.
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Corrozion,
due to boric acid, is a big problem for this highly important component
of the reactor.
Extremly problematic situation could result of this,
for example at Davis-Besse power plant. |
MP98
LIQUID CONTROL SYSTEM: the best solution
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With
conduits located inside the upper internals, MP98 liquid control system
suppress head vessel penetration damages. The best solution to solve a
problem is to suppress the device affected by the problem. In case of
head vessel substitution with a standard head vessel, the problem is
just delayed for few years; and corrozion due to boron is still active.
With MP98 solution, All penetrations are suppress in reactor vessel and in head vessel. The head vessel is cheapper and saffer. Boron is suppressed and in the same time you saves many years of corrozion for steam generators and primary circuit. Wastes are minimized (24% less for long activity waste with spectral shift fuel) (100% of tritium supressed). Contamination is also lower.
Penetrations
are at the vessel bottom and problem are not suppressed for that.
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