12. Auxiliary and safety circuits
The auxiliary and safety circuits of naval propulsion PWRs differ in their design from those of land-based generator PWRs (see
On the ship :
-
the greatest possible simplicity is sought (a French naval propulsion PWR with two loops has around five times fewer primary circuit valves than a land-based PWR with three loops). For example :
purification – filtration of the primary circuit generally operates at high pressure, which avoids the need for permanent lifting of the primary circuit,
control of reactivity by soluble poison is avoided (or its use is very limited),
...
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Auxiliary and safety circuits
Driving instrumentation
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