CNSC Canadian Nuclear Safety Commission
responds on Signage and Medium Risk...
Here are a few key points that should answer your questions.

Facts on signage for GEH-C

· Section 21 of the CNSC’s Radiation Protection Regulations, “Posting of Signs at Boundaries and Points of Access,” prescribes when and where signage is required by licensees.

· Depending on the amount(s) of nuclear substance(s) present or the potential for radiation exposure, licensees are required to post signs with the radiation warning sign (trefoil) and the words “Rayonnement – Danger – Radiation” at the boundary of every point of access to an area, room, enclosure or vehicle.

· No radiation warning sign is required at the site boundary of GEH-C’s Toronto facility since the conditions requiring the posting of radiation warning signs pursuant to section 21 of the Radiation Protection Regulations are not present.

· Essentially, no external signage is required because there is no radiation risk to the public outside of the building.

· However, the CNSC encourages its licensees to proactively communicate with communities and interested persons. There is nothing preventing GEH-C from posting signage regarding its nuclear activities at the Toronto facility.

Facts on GEH-C being designated a medium risk facility

· The CNSC considers the overall risk from GEH-C’s Toronto facility to be low since the facility only uses natural uranium, which means there is no possibility of a nuclear-related accident.

GEH-C has been assessed to be at the lower end of medium risk facilities based on the facility handling a large quantity of uranium oxide powder.

· Potential hazards for all activities at the facility have been identified and addressed in their safety analysis report. GEH-C is required to put extra safety controls to address the risk from the handling uranium powder and hydrogen gas.

· The CNSC has confirmed that these programs are working as designed and the risks to workers and the public are well managed.


Marc Drolet

Public Affairs and Media Relations

Canadian Nuclear Safety Commission
Tel 613-947-0442 (1-800-668-5284)

Cell 613-808-3134 I Fax 613-992-2915

280 Slater, P.O. Box 1046, Station B, Ottawa (ON) K1P 5S9