United States Nuclear Regulatory Commission - Protecting People and the Environment

U.S. Nuclear Regulatory Commission

Question 103: 10 CFR 20.1302 (b) (2) (ii) refers to "the dose from external sources."

(a) What are "external sources"?

(b) Are both (1) shine from the facility or from stored contaminated materials and sources, as well as (2) cloud shine from effluents to be included?


(a) "External sources" are radiation sources outside the body.

(b) Yes.

(Reference: 10 CFR 20.1302).

Page Last Reviewed/Updated Monday, August 31, 2015