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RTM644-Smart™

Large Clearance Monitor

The Mirion RTM644-Smart Gamma Clearance Monitor is designed for measurements of large items like EPAL crates, 400 or 200 liters drums, palettes or big-bags with a measurement chamber size of 1870 liters.

Tag Features

  • Gamma clearance monitor compliant with Euratom 2013/59, IAEA RS-G-1.7, ISO11929:2019
  • Palettes, EPAL crates, 200 L, 400 L drums, big-bags: maximum weight 1000 kg; counting chamber 138 x 112 x 121 cm³ (LxWxH), volume 1870 liters.
  • High throughput: up to 16 tons per hour
  • Low MDA: 34 Bq Co-60, achieved by 24 plastic scintillator detectors with spectroscopic read-out in a 4 π configuration, modular lead lingot shielding of up to 75 mm on six sides,
  • Unprecedent precision and low uncertainty: Spectrometric detector readout and signal processing, simulation-based object models, automatic efficiency and background correction,
  • Improved handling of inhomogeneities: optional analysis software module,
  • Highly customizable: 1 or 2 doors configuration, selectable conveyor length, container installation; Configurable fingerprints, release limits and objects,
  • Modern software platform: Windows 10 IoT LTSC operating system and state-of-the-art Lighthouse analysis software
  • Simple use: user-friendly and intuitive graphical user interface, software-controlled door and conveyor operation, remote control station, built-in weight scale,
  • Straightforward calibration and maintenance: single source calibration, real-time spectrum display, software guided efficiency check and hardware diagnostics,
  • Robustness and safety: Stainless steel chamber lining and external cladding, robust chassis, door hinges and position switches, protection fences and oversize sensors,
  • Safe transportation by crane with full shielding installed.

Description

The RTM644-Smart is the most advanced clearance monitor and key monitoring equipment for every major clearance campaign. It consists of a measurement chamber with motor-operated swing doors and automatic chain conveyor system. The measurement objects are weighed by integrated scales and checked for gamma radiation by 24 state-of-the-art plastic scintillation detectors with spectroscopic readout.

The RTM644-Smart shares the common, modern Lighthouse™ monitor software platform, with Windows 10 IoT operating system. This analysis software reports nuclide specific activity, brings lower measurement uncertainties, handles complex nuclide vectors, automatizes loading and simplifies maintenance.

It is based on the well-proven algorithm principles and improved leading nuclide correlation (LNC) technology as used in many Mirion RTM monitors. The state-of-the-art spectrometric detector read-out and the simulation-based object models, allow an unprecedented measurement accuracy. It provides with reliable efficiency correction for all nuclides in the fingerprint. The automatic verification and optimization of the declared nuclide vector can further reduce the measurement uncertainties.

The RTM644-Smart comes with advanced administrator and maintenance features: the realtime energy spectrum display provides with a radiological health check of detector array on a single glance. All calibration and routine efficiency checks are configurable and software guided. The comprehensive and intuitive monitor software comes with user configurable libraries for release limits, radiological fingerprints or editable standard objects like crates or waste drums.

To extend the functionality to application-specific objects or assess specific environmental conditions or nuclide vectors, validated Monte-Carlo-simulations are available as a complementary service. The self-contained results database facilitates customized report generation, decision tracing and recalculation.

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