TNAG-1508-FCO40-2066-Guangdong-nuclear-power-station-project-at-Daya-Bay-safety-c-1987 — Page 132

LHKEE

The second shield The pressure vessel

(The reactor coolant pressure containment)

In the unlikely event that a fuel

should rupture, and

can

radioactive material

leak out into the water,

it would still be

loop. This sealed

sealed in the primary

primary loop, also known as the reactor

coolant pressure containment, consists chie-

fly of a pressure vessel with walls about

200 mm thick and stainless steel pipes. The

main pump and the steam generator each have

special precautions to prevent

their own

leakages of water from the primary loop.

The third shield - The containment building

Pressure

Vessel

circular pre-stressed,

The containment building is a domed,

steel-reinforced concrete building. Its interior diameter is

approximately 37m, it is about 60 meters tall. Its walls are 0.9

meters thick. It is lined in the inside

with 6 mm thick steel plates. The

primary loop is installed inside it. The

containment building also has a safety

water injection system, a

containment

building safety water spray system, a

dehydrogenizing

system,

purification system and

and

air

a cooling

system. The containment building is well

sealed. It can stand up to the acute

Containment Building

internal

18

pressures

and

drastic