Risk Values and Dose Limits for ICRP 60 and NCRP 116

Recommendations, Risk Values and Other Factors ICRP Publication 60 NCRP 116
Assumed Radiation Risks    
Workers 4.0 x 10-2 Sv-1 for fatal cancer  4.0 x 10-2 Sv-1 for fatal cancer 
  0.8 x 10-2 Sv-1 for nonfatal cancer detriment 0.8 x 10-2 Sv-1 for nonfatal cancer detriment
  0.8 x 10-2 Sv-1 for severe genetic effects 0.8 x 10-2 Sv-1 for severe genetic effects
Members of the Public 5.0 x 10-2 Sv-1 for fatal cancer  5.0 x 10-2 Sv-1 for fatal cancer 
  1.0 x 10-2 Sv-1 for nonfatal cancer  1.0 x 10-2 Sv-1 for nonfatal cancer 
  1.3 x 10-2 Sv-1 for severe genetic effects 1.3 x 10-2 Sv-1 for severe genetic effects
Embryo-fetus not specifically stated ~10 x 10-2 Sv-1
Occupational Dose Limits    
Based on Stochastic Effects 50 mSv annual effective dose limit and 100 mSv in 5 y cumulative effective dose limitc 50 mSv annual effective dose limit and 10 mSv x age (y) cumulative effective dose limitc
Based on Deterministic Effects 150 mSv equivalent dose to lens of eye and 500 mSv annual equivalent dose limit to the skin, hands and feetd 150 mSv annual equivalent dose to lens of eye and 500 mSv annual equivalent dose limit to the skin, hands and feetd
Annual Limit on Intake (ALI)

        20 mSv               

  E (50) Bq-1

 

                  _                                     
Annual Reference Levels on Intake (ARLI)              _                                     

        20 mSv               

    E (50) Bq-1

 

Public Dose Limitsb    
Based on Stochastic Effects 1 mSv annual effective dose limit and, if needed, higher values provided that the annual average over 5 y does not exceed 1 mSvc 1 mSv annual effective dose limit for continuous exposure, and 5 mSv annual effective dose limit for infrequent exposurec
Based on Deterministic Effects 15 mSv annual effective dose limit to lens of eye and 50 mSv annual equivalent dose limit to skin, hands, and feetd 50 mSv annual equivalent dose limit to skin, and extremitiesd
Embyo-fetus 2 mSv equivalent dose to the women's abdomen once pregnancy has been declared and limitaing intakes of radionuclides to about 1/20 of an ALId  0.5 mSv equivalent dose limit in a month once the pregnancy is knownd 
Negligible Individual Dose (NID)                _ 0.01 mSv annual effective dose per source or practicee 
     
bThe dose limits exclude medical and natural background exposures c The concepts of effective dose equivalent and effective dose are different d The concepts of equivalent dose and dose equivalent are also different
e NID does not have a corresponding risk level    

The difference between effective dose and effective dose equivalent and equivalent dose and dose equivalent

 

The equivalent dose (HT) is conceptually different  from the dose equivalent (H).


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