8
need to be done on the possible adverse effects on the integrity of the containment building;
and
21.
(b)
the sand filter system would need to be maintained at a temperature of -50°C in order to be effective; as Daya Bay was located in
in a sub-
tropical climate zone, the technical problems involved would need to be studied in depth.
The Chinese authorities emphasized that the basis for
consideration was whether the
sand filter system the addition of a
would affect the integrity and safety of the containment
building. They also stressed that the final decision would be based not on financial considerations but soly on engineering
grounds and safety considerations.
22.
(2)
Hydrogen Recombiner System
Two
hydrogen recombiner systems have already been incorporated in the design
of the Daya Bay plant.
23.
(3) Pressurized Containment Penetration Design : We learnt that the design as used by the Zion plant in the USA was only one of several alternative methods to prevent leakage of air
from the containment. The Chinese experts told us that the
French design for containment penetration was based on
different principle but achieved the same effect and the practicability of the design had been proved through long periods of trial by nuclear plants in France.
24.
a
(4) Establishment of an Emergency Response Facilities Centre : The Chinese authorities indicated that they were fully aware of the need to make reference to the experience of other
countries in order to reinforce the safety and effective