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Portable Gauge Quick Reference Guide

Your guide to compliance in the field

Portable Gauge Quick Reference Guide (PDF)

Important information to keep you on hand:

  • Radiation Safety Officer’s (RSO’s) name and 24-hour phone number
  • CNSC 24-hour duty officer phone number: 613-995-0479 or toll free 1-844-879-0805

Required documents

  • A valid TDG training certificate for Class 7
  • A properly completed shipping document
  • Emergency procedures
  • Complete copy of current CNSC licence

Required device labelling

  • Name or job title of person to contact
  • 24-hour phone number
  • Source details
  • Radiation warning symbol

Package marking and labelling

  • Markings:
    • Shipping name
    • UN Number
    • Consignor ID
    • Specification mark "Type A"
    • Name of package manufacturer
    • Country of manufacturer (VRI code)
  • Class 7 category label on opposite sides of the package – each label must include the radioactive contents, activity and transport index (TI)

Device security

  • The portable gauge must be either under the constant surveillance of a worker, or secured in a transport vehicle or at the storage location
  • Verify the structural integrity of the Type A package

Notify the CNSC duty officer immediately of any reportable incident, including any of the following:

  • lost, stolen or missing gauges
  • damaged gauge impairing normal use
  • transport accidents involving a gauge
  • gauge with a stuck/open shutter

A full written report must also be submitted to the CNSC within 21 days.

Radiation Protection

Remember the ALARA principle: As low as reasonably achievable

Minimize your exposure by decreasing time, increasing distance and making use of shielding:

Time: Distances: Shielding:
Minimize time by planning your actions. Minimize distance by staying away from the gauge as much as possible. Incorporate shielding wehnever possible.

Always ensure the gauge shutter is fully closed before transporting:

If the shutter is open - do not transport

Best practice:

To avoid unnecessary exposure, use a radiation survey meter to confirm that the shutter is fully closed.

Ascertaining radiation doses

  • Wear your whole-body dosimeter (between the neck and waist) if you assigned one
  • Log every shot (practice and real) to calculate dose
    • 1 shot = approximately 1.2 microsievert (µSv) of dose
Incident response checklist
Set a safe perimeter of 2 m and keep people away from the gauge
Inform the appropriate person(s) immediately
Initiate your emergency procedures
Figure of a person with an extremity Dosimeter indicated on their right hand and a whole-body dosimeter located on the left side of their chest

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