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BNLS Software

CANBERRA Unattended Spectrometric Aerosol Monitor (CUSAM)

CANBERRA Unattended Spectrometric Aerosol Monitor (CUSAM)

Introduction

The past decades the world has become very concerned with respect to environmental pollution. One of the main domains on this subject is the danger of radioactivity. Due to the Chernobyl accident several countries started programs to monitor the radioactivity in the air on their territory. Canberra Eurisys Benelux has developed an alpha/beta/gamma air monitor spectrometer system. Several countries have integrated such a system in their national environmental monitoring network.

The spectrometric monitor continuously measures air, sampled on a filter, and deduces nuclide activities, based on gamma radiation, and total alpha and beta activities. The results are communicated on-line or off-line to a remote computer system of the national monitor network.

Features

  • Continuos Air Monitoring
  • Alpha, Beta and Gamma measurement unit
  • Different alarm functions
  • CANBERRA Genie software
  • Quality Assurance features
  • Transfer of data to a remote Communication Control Center via network or modem
  • Synchronised measurements with variable measurement time.
  • M.D.A.: typical 0.005 Bq/m³ (60Co) for a complete day. 0.03 Bq/m³ for a 4 hour measurement. The detection limits for the alpha and beta activities are respectively 0.01 and 0.03 Bq/m³

 

Description

The drawing shows the main components of the CUSAM. The cabinet contains the air sampling system, a CAM PIPS detector, possible NIM electronics and cabinet control electronics. The cabinet also holds the gamma measurement unit: Ge-detector with cooling unit and possible ICB NIM electronics or a DSA-2000 unit. A PC with screen, mouse, keyboard and printer is placed near the cabinet. Via an Ethernet network or modem it is possible to obtain on-line or off-line analysis results and measurement conditions from the system, for example for further processing in a spreadsheet application.

The main part of the sampling system is the filter unit, which accumulates the particles, present in the air. The filter band shifts each time a new measurement is started. A pump inside the cabinet circulates the air from the small chimney at the top, through the filter paper band, back to the top of the cabinet, where the air leaves the cabinet via a small hole.

The principle part of the alpha/beta measurement unit in the cabinet is the CAM PIPS detector, which allows a reasonable discrimination between beta and alpha activity. The energy proportional detector signals, induced by the impinging alpha/beta particles, originating from radio-active air particles, are processed by (ICB) NIM electronics or a MCA board (inside the PC) and finally the energy dependent events are stored in the MCA board or AIM NIM module, a networked blind MCA. Special algorithms deduce the natural and artificial alpha activity and the (artificial) beta activity from the registered alpha/beta spectrum (counts in specific energy windows).

Steel Measurement System (SMS)

Steel Measurement System (SMS)

Introduction

To answer the demands of the customer 4 models are available: SMS-MX, SMS-ACX, SMS-APX and SMS-ADX (X=2 = 2" x 2" and X=3 = 3" x 3" NaI detector).

SMS-MX

This is a manual system based on a NaI(Tl) detector 2" x 2" (SMS-M2) or 3" x 3" (SMS-M3), lead shield, model 727/R, the Canberra uniSPEC, a personal computer

SMS-ACX

This is a full automatic system, controlled by a robotic system. The system includes 3 " x 3" NaI(Tl) detector, lead shield (2"), the Canberra uniSPEC, a personal computer, easy to use software, conveyor (59 cm) and sample separator.

SMS-APX

This is a full automatic system, controlled by a robotic system. The system includes 3" x 3" NaI(Tl) detector, lead shield (3"), the Canberra uniSPEC, a personal computer, easy to use software, and pneumatic operated drawer for the sample loading.

SMS-ADX

Same as the SMS-APX system, but with manual instead of pneumatic tray.

Steel Measurement System (SMS)

Features

  • Special made for the metal factories
  • Manual or automatic version available
  • Multichannel based electronics
  • High sensitivity
  • Easy to use
  • Privileged options are password protected
  • Flexible alarm settings

Description

Canberra has more than 30 years of experience in Nuclear Spectroscopy with installations in every lab of the globe. The Steel Measurement System is Canberra's dedicated system to measure the radioactivity in metal samples.Reaching the lowest levels of sample activity (Bq/g) is of vital importance for the production of metal.

The Steel Measurement System is Canberra's dedicated system to measure the radioactivity in metal samples.Reaching the lowest levels of sample activity (Bq/g) is of vital importance for the production of metal.

To reach this low level, also known as Minimum Detectable Activity (MDA.) Canberra is using a system based on Multichannel Analyser (MCA) technology, rather than using total gamma measurement based on discriminators.

The MDA (MDA≈√B/T*E where B=Background activity in the lab, T=Measurement time and E=Efficiency of the detector) depends on the amount of environmental radiation (not originating from the metal sample). For reasons that the MDA needs to be as low as possible, the background in the lab, coming partly from the natural activity (Potassium) in the walls and partly from cosmic radiation, needs to be minimized. Thanks to the MCA design, the potassium can be fully discriminated, while the lead shield surrounding the detector will decrease for a big part the cosmic radiation.

The MDA is also inverse proportional to the measurement time and efficiency. The measurement time is user definable via the software, while the efficiency is determined by the design of the measurement geometry, mainly the NaI detector and the sample.

The NID (Nuclide Identification) measurement mode allows a nuclide specific search and activity calculation, based upon the Canberra Genie-2000 algorithms. The ROI (Region Of Interest) measurement mode on the other hand gives a rough estimate of every activity increase. Both methods can be combined to complete each other.

PORTIA: Economical Pedestial/Goods Monitor

PORTIA: Economical Pedestial/Goods Monitor

Description

The PORTIA system is designed to detect the pre-sence of any gamma ray above 60 keV in packages, waste, vehicles, laundry and persons.

It is designed to be quickly set or stationary use; it can be optimized for many applications and tailored to your needs. From stand alone units to Ethernet based net-worked systems with 2,4 or more detectors.

PORTIA: Economical Pedestial/Goods Monitor

Features

  • Detection of gamma ray emitted by any radioactive source from laundry, waste, packages, vehicles or pedes-trians
  • Sensitive to photons from 60 to 3000 keV
  • Optional lead shielding for low back-ground
  • Weather resistant stainless steel enclosure for outdoor operation (optional)
  • Walk–by or walk through operation
  • Modular architecture allows easy expansion and integration
  • Fully automated measurements and continuous background monitoring
  • Light weight design for emergency response applications
  • Suited for permanent or temporary installations
  • Quick and easy setup with auto-matic start-up and operation
  • Integrated controller with data log-ging and RS-232C, wireless or Ethernet output
  • Visual and audible alarm
  • Excellent price / performance ratio
Water Monitor: Spectroscopy based Submerged Water Monitor

Water Monitor: Spectroscopy based Submerged Water Monitor

Description

To answer the increasing demand of today's real time radioactive monitoring this Water Monitor was designed.

The Water Monitor is a system designed to monitor on site and "on-line" the radioactive level of the water (tanks, tubes, sea, rivers, etc.). The system is composed by the following elements:

1. A corrosion-free and water tight probe. The probe envelope contains the following items:

  • 2x2 inches NaI (Tl) detector with photomultiplier (PM).
  • A compact tube-base MCA with up to 1024 channels and digital spectrum stabilization.
  • and a 100 meters sea-tight Ethernet cable.

2. An embedded industrial PC (optional)

3. An USB-to-Ethernet box extender

4. The software SPIDER for remote control, data acquisition and analysis software.

Water Monitor: Spectroscopy based Submerged Water Monitor

Features & Benefits

  • Monitoring of gamma-ray count rates and energy spectrum
  • Submergible, water-tight spectroscopy detector (2 x2 inches NaI(Tl)) with no lead shielding
  • No moving mechanism. Hermitically sealed
  • Controllable up to 100 meters distance.
  • Sea-proof Ethernet cable provides power and data communication
  • Fully controllable by SPIDER software
  • Windows 2000 and XP platforms supported
CLEA: Hospital Waste Measurement System

CLEA: Hospital Waste Measurement System

Description

Radioactive waste with activity or specific activity below the clearance level can be released from regulatory control. The fully automated high-resolution low-level gamma spectros-copy CLEA checks these clearance levels and warns when levels are exceeded.

The CLEA combines the best resolution HPGe detector tech-nology with ultra-low microphonic electrical cooling combined with a Multi Channel Analyzer with Digital Signal Processing. The lead shielded system has a balance to obtain results in Bq per gram. Rotation of the drum is applied during measure-ments to compensate for inhomogeneously distribution of the radio active material in the drum. Each waste drum presented for measuring is identified by a unique barcode number, the results are stored in a database. The CLEA is a member of the Waste Watchers (W2) Family.

CLEA: Hospital Waste Measurement System

Features

  • Nuclide specific clearance level check
  • Hyperpure Germanium (HPGe) de-tector
  • Ultra-low microphonic electrical cool-ing
  • Integrated desktop MCA with Digital Signal processing
  • Lead shielding for low background
  • Rotation of drum for uniform response
  • Free release measurements of medical and industrial waste
  • Supported by the Genie2000 software
  • NDA2000 software Non Destructive Assay for controlling the waste measurements
  • Fully automated measurements
  • Users friendly interface
  • Nuclide specific results in Bq / measuring unit
  • Barcode reader for a unique ID
  • Database storage of results
  • Extensive QA procedures, calibra-tion, background checks
  • Visual and audible alarming
  • Adjustable height of HPGe detector