SPALAX Automated Radio Xenon Sampler/Analyzer

SPALAX Automated Radio Xenon Sampler/Analyzer

Online compact and reliable measurement of 131mXe, 133Xe, 133mXe, 135Xe isotopes Initially designed by the French Atomic Energy Commission (CEA).

Applications:

Continuous separation and monitoring of Radio Xenon Monitoring Worldwide Network
Mobile lab version (upon request) for on site Radio Xenon survey around nuclear sites

Features:

Sampling stage using polymeric permeation membranes for complete elimination of O2, water vapour and CO2
Trapping at ambient temperature (no cryogenic system required) with very efficient elimination of Radon
Built-in generator of pure nitrogen used as carrier gas
Small size ovens for gas concentration
Super-concentrator of Xe: enrichment of 3.5 million times from Xe sampled
Simple detection system using rugged low background noise gamma spectrometer for direct measurement of the four isotopes. Connection to other type of detector upon request
Unattended operation on site with remote maintenance diagnosis via modem

Specifications:

Measured compounds: 131mXe, 133Xe, 133mXe, 135Xe, 133Xe
Minimum detectable limit: 0.20 mBq /m3
Sample processing time 4 – 8 - 12 - 16 - or 24 h
Xe breakthrough volume: 70 m3
Xe concentration ratio per cycle: 28% corresponding to a volume of approx. 7.5 cm3
Radon deflection factor: > 105
Dry air input: 15 m3/h
Detector: Gamma HP Ge planar or other upon request