James Fisher & Sons PUBLIC LIMITED COMPANY - the leading provider of marine services
Personal Contamination Monitors

Personnel working in radiation controlled areas may from time to time come into contact with radioactive contamination. We offer a range of installed Radiation Protection Instrumentation (RPI) monitors to detect radioactive contamination which are commonly installed at the exit of a Radiation Controlled Area (RCA) or at strategic locations within the RCA. Alpha and beta contamination can be detected with conventional large area gas-flow proportional counters or with the latest BetaFibreTM detection technology. All monitors benefit from modern measurement electronics designed for ease of operation and maintenance. Voice guidance and graphical user interfaces ensure that measurements are effective and results clearly displayed. In-built maintenance tools help to optimise system set-up and minimise equipment downtime. All Rados personnel contamination monitors can be networked using the Central Monitoring System (CeMoSys) utility which centralises all measurement and maintenance data for a number of monitors and can be used for remote diagnostics.

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RADOS TwoStep&trade-Exit II

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Handling radioactive materials may cause contamination. Our CheckPoint:Body™ monitors are designed to thoroughly check all persons entering or leaving a particular area, building or site. Typically, the monitors are deployed between controlled and clean areas.

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RTM 860TS

The RTM 860TS has a long pedigree in body contamination monitoring using gas-flow proportional counters. The current monitor is the fifth-generation to exploit the unique and patented split-delta geometry and the two-step geometry for optimal body coverage.

The monitor features:

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  • Comprehenisve body coverage with alpha/beta detectors.
  • Class-leading homogeneity of detector response.
  • Up to 67 available measurement channels with a range of options including small items box and gamma detectors.
  • Choice of detector grids to optimise for either sensitivity or detector protection.
  • Highly configurable with options including doors, barriers, small items box, card-reader, dosimeter reader interface etc.
  • Designed to meet the latest IEC 61098 for high performance in nuclear environments. The stainless steel housing is easily decontaminated and easy to maintain.
  • A proven measurement concept with automatic background correction which self-corrects if the background changes, automatic adjustment of the measurement time and a range of measurement display units which can be configured to the plant requirements.
  • Quick an easy operation with a robust performance.

Pre-Monitor

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The RADOS TwoStepTM-PRE (RTM870) covers parts of the body most likely to be contaminated – it is easy to use and has excellent user guidance using a graphic display and voice prompts. The design and the features of the Rados TwoStepTMPRE body monitor make it an effective, secure and safe contamination monitor for personnel. The pre-monitor is typically used around the controlled area for a check on contamination and offers better body coverage than a hand and foot monitor.

The monitor is offered with alpha/beta detectors, gamma detectors or a combined alpha/beta/gamma version.










Hand and Foot Monitor

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The RTM 110 Hand and Foot Monitor is a rapid and effective method for contamination monitoring of personnel, and includes a removable frisk probe for clothing. The monitor is available with gas-flow proportional counters or the innovative and lightweight BetaFibreTM detection technology.

JFIMS also supply vehicle and pedestrian monitors, tool and clearance montiors and laundry monitors

RADOS FastTrack-Fibre™

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The RADOS FastTrack-Fibre™ Monitor is not a conventional type Gamma Portal Monitor. It unties the advances of GammaFibre™ and FastTrack technologies in a compact design, thereby setting a new standard in personnel gamma monitoring.

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RADOS HandFoot-Fibre™

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Thenew RADOS HandFoot-Fibre™ Monitor is used in circumstances not requiring a full body monitor. It is suitable for various applications due to the combination of alpha/beta or beta/gamme detection (optional).

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RADOS HandFoot-Fibre™MED

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Thenew RADOS HandFoot-Fibre™MED Monitor is used for contamination control in circumstances not requiring a full body monitor. It is suitable for various applications especially for nuclear medicine and isotope laboratories due to its ability to detect aplha, beta and low energy gamma radiation.

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