Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
Monitoring of gaseous effluents at facilities that produce, process and use positron-emitting radionuclides. NaI(Tl) GD-53 gamma detector installed inside or beside the ventilation duct, with optional collimator. A spectroscopic multichannel-analyser variant supports isotope identification from the stack spectrum itself. Pairs with the RMS server for site-wide release-monitoring records.
| Intended use | Monitoring of gaseous effluents in PET production, cyclotron facility and nuclear-medicine release stacks |
| Target isotopes | Positron-emitting radionuclides via 511 keV annihilation photons (F-18, C-11, O-15, N-13, Ga-68 and related) |
| Detector type | NaI(Tl) scintillation gamma detector (GD-53) |
| Installation | Inside ventilation duct (maximum sensitivity) or adjacent to duct with optional collimator (easier service access) |
| Baseline MCA | DIM-09 multichannel analyser, 1K channels with region-of-interest analysis |
| Spectroscopic MCA | DIM-15 multichannel analyser, 1K / 2K / 4K / 8K channels with built-in peak analysis |
| Local control | On-board display and control; integrates into host RMS server |
| Alarm management | Per-isotope configurable thresholds; alarm events streamed to RMS server |
| Host interface | LAN / RS-485 (per manufacturer datasheet) |
| AERB framework | AERB-compliant stack-release record for inspection |
The continuous release record AERB inspection expects
Cyclotron F-18 production releases trace activity through the building exhaust. The stack monitor sits at the duct and produces the continuous release record AERB inspection expects.
Radiopharmacy hot-cells and fume hoods are exhausted through dedicated ducts. The spectroscopic variant identifies which isotope is in the release stream — useful when a contamination event needs root-cause analysis.
Lu-177 / Ga-68 dispensing produces aerosol activity in the local exhaust. The stack monitor detects the activity above background and triggers alarm when the release rate crosses the regulatory threshold.
AERB facility licence renewal includes the annual stack-release record. The stack-monitor + RMS archive provides the data; the radiation-safety officer summarises the dossier from continuous data rather than from operator estimation.
A cyclotron production cycle generates a characteristic stack-release signature. The stack-monitor log correlated with the production-day log lets the radiopharmacy verify that releases match expected production yields.
A failed cell-isolation valve or an unexpected hot-lab contamination produces an out-of-pattern stack-release spike. The stack monitor catches the spike in real time and triggers the RMS escalation chain.
Positron-emitter facilities release 511 keV annihilation photons. A NaI(Tl) crystal sits at the right efficiency-vs-cost point for 511 keV stack monitoring — sensitive enough to read trace release rates above background, cost-effective enough for continuous unattended deployment.
Cyclotron building duct routes are not always service-accessible. The stack monitor supports either in-duct installation for maximum sensitivity or adjacent-duct installation with an optional collimator for sites where in-duct mounting is impractical. The same instrument serves either deployment.
A simple counts-vs-time stack monitor flags that a release happened. The spectroscopic MCA variant — up to 8K channels with built-in peak analysis — identifies which isotope is in the release stream from the spectrum. Useful when the release record has to differentiate routine F-18 against an unexpected longer-lived contaminant.
Manufacturer product page. Contact Saxsons for AERB documentation, site survey and India installation.
Stack / Effluent Monitor
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Contact Saxsons Group for stack / effluent monitor supply, AERB compliance paperwork, site survey and India commissioning.