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Radiation Protection Regulations

Version of section 12 from 2006-03-22 to 2020-11-24:

  •  (1) The definitions in this subsection apply in section 13.


    ALI or annual limit on intake means the activity, in becquerel, of a radionuclide that will deliver an effective dose of 20 mSv during the 50-year period after the radionuclide is taken into the body of a person 18 years old or older or during the period beginning at intake and ending at age 70 after it is taken into the body of a person less than 18 years old. (LAI ou limite annuelle d’incorporation)


    E means the portion of the effective dose, in millisievert

    • (a) received by a person from sources outside the body; and

    • (b) received by and committed to the person from sources inside the body, measured directly or from excreta. (E)


    I means the activity, in becquerel, of any radionuclide that is taken into the body, excluding the radon progeny and the activity of other radionuclides accounted for in the determination of E. (I)


    Rn means the average annual concentration in the air, in Bq per m3, of radon 222 that is attributable to a licensed activity. (Rn)


    RnP means the exposure to radon progeny in working level months. (RnP)

    Σ I/ALI

    Σ I/ALI means the sum of the ratios of I to the corresponding ALI. (Σ I/LAI)

  • (2) For the purposes of sections 13 and 14, doses of radiation include those received from X-rays or other man-made sources of radiation.

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