This equipment enables radioactive dissolved gases to be extracted from the primary water of a PWR reactor. These gases can be injected into a gas chromatographic analyser to determine the content of it.

OPERATION PRINCIPLE
A sample of about 150 cm3 of water is isolated into the separator. Flushing inert gas through the sample then displaces the dissolved gases. On this sample, a vacuum extraction is made followed by a sweeping with an inert gas. This results  either in a gas sample which consists of the gases having been dissolved before or in a water sample no longer containing radioactive gases.

ERGONOMICS

• Even in case of pipes failure, the degassed water sample can be handled in laboratory for chemical analyses without any contamination risks due to aerosols.
• This sample's spectrometry is facilitated by the absence of rays from other substances dissolved in water. Pipes failure detection can thus be made earlier, thanks to the measurements precision and the high accuracy which result of the low background noise.

Nota : The radioprotection of the operator is ensured by the apparatus thickness. Installing the equipment in a glove compartment must ensure protection from aerosol contamination.

OPTIONS
The equipment is delivered with various accessories allowing the installation and its operation. The inert gas arrival neccessary to sweeping must be anticipated.