TNAG-1505-FCO40-2063-Guangdong-nuclear-power-station-project-at-Daya-Bay-safety-c-1986 — Page 65

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plant as a whole, have yet to be further studied and analysed. As the design of the various systems of a nuclear power plant is a very complex problem involving many factors, all of them should be taken together and considered in their totality. Though generally speaking, it is possible to design a PWR nuclear power plant by breaking it

breaking it down into over a hundred systems, yet the coordination of functions among systems, the matching of parameters, the choice of model for equipment, and the operation of the systems all have close and inseparable relations of their own. The addition or removal of a system must be done taking into account not only the functions of that system but also the consequences it

it will have on other systems and the whole plant. In other words, a conclusion can only be drawn after thorough

Therefore, analysis and argumentation.

after

have received

details of design

design from France, a comprehensive study will be undertaken on whether a sand filter system should be added to the

containment.

we

So

Our views on the incorporation of a hydrogen recombiner

reduce the probable danger of high

high level hydrogen

to as

concentration are as follows

a

In the Framatome design for the nuclear island, containment air pressure control system (ETY) is installed with 2 sets of hydrogen recombiners.

loss of coolant

-

In

a

case of

be able to remove

the

accident, the hydrogen recombiners will hydrogen inside the reactor. The objective of the design is that

after an incident,

incident, the system must be efficient enough to ensure that hydrogen concentration developed after the loss of coolant will not exceed the explosion limit.

Our views on "the

penetration design" are as follows

use of pressurized

containment

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