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3. The effective dose limits specified in the Safety Regulation NRRC-R-01 shall apply to the sum of the relevant doses from external exposure in the specified period and the relevant committed doses from intakes in the same period; the period for calculating the committed dose shall nor-mally be 50 years for intakes by adults and shall be up to age 70 years for intakes by children. 

4. For occupational exposure, the Personal Dose Equivalent Hp (10) may be used as an approxima-tion of the Effective Dose from external exposure to penetrating radiation. 

5. The equivalent dose limits for the skin apply to the average dose over 1 cm2 of the most highly ir-radiated area of the skin. The dose to the skin also contributes to the effective dose. This contri-bution is the average dose to the entire skin multiplied by the tissue weighting factor for the skin. 

6. Values of the Effective Dose per unit air kerma free-in-air and per unit particle fluence are given in Tables I.A – I.D.

7. Doses per unit intake (dose coefficients) for the estimation of the Committed Effective Dose for ingestion and inhalation of radionuclides are given in Tables II.A – II. H.



TABLE I.A. CONVERSION COEFFICIENTS FROM AIR KERMA FREE-IN-AIR TO Hp(10,0°) IN AN INTERNATIONAL COMMISSION ON RADIATION UNITS AND MEASUREMENTS ICRU SLAB (PHOTONS) 

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TABLE I.B. CONVERSION COEFFICIENTS FROM AIR KERMA FREE-IN-AIR TO Hp(0.07,0°) IN AN INTERNATIONAL COMMISSION ON RADIATION UNITS AND MEASUREMENTS ICRU SLAB (PHOTONS) 

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TABLE I.C. EFFECTIVE DOSE PER UNIT NEUTRON FLUENCE E/Φ FOR MONOENERGETIC NEUTRONS INCIDENT IN INTERNATIONAL ORGANIZATION FOR STANDARDIZATION GEOMETRY ON AN ADULT ANTHROPOMORPHIC COMPUTATIONAL PHANTOM


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TABLE I.D. REFERENCE CONVERSION COEFFICIENTS FROM FLUENCE TO DIRECTIONAL DOSE EQUIVALENT FOR MONOENERGETIC ELECTRONS AND NORMAL INCIDENCE


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TABLE II.A. WORKERS: COMMITTED EFFECTIVE DOSE PER UNIT INTAKE e(g) VIA INHALATION AND   INGESTION (Sv/Bq)


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TABLE II.B. COMPOUNDS AND VALUES OF GUT TRANSFER FACTOR    f1 USED TO CALCULATE COMMITTED EFFECTIVE DOSE PER UNIT INTAKE VIA INGESTION FOR WORKERS


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TABLE II.C. COMPOUNDS, LUNG ABSORPTION TYPES AND VALUES OF GUT TRANSFER FACTOR f1 USED TO CALCULATE COMMITTED EFFECTIVE DOSE PER UNIT INTAKE VIA INHALATION FOR WORKERS


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TABLE II.D. MEMBERS OF THE PUBLIC: COMMITTED EFFECTIVE DOSE PER UNIT INTAKE e(g) VIA INGESTION (Sv/Bq)


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TABLE II.E. MEMBERS OF THE PUBLIC: COMMITTED EFFECTIVE DOSE PER UNIT INTAKE e(g) VIA INHALATION


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TABLE II.F. LUNG ABSORPTION TYPES USED TO CALCULATE COMMITTED EFFECTIVE DOSE PER UNIT INTAKE VIA INHALATION FOR EXPOSURE DUE TO PARTICULATE AEROSOLS OR DUE TO GASES AND VAPOURS FOR MEMBERS OF THE PUBLIC


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TABLE II.G. INHALATION: COMMITTED EFFECTIVE DOSE PER UNIT INTAKE e(g) (Sv/Bq) FOR SOLUBLE OR REACTIVE GASES AND VAPOURS


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TABLE III.2H. EFFECTIVE DOSE RATE FOR EXPOSURE DUE TO INERT GASES FOR ADULTSa


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