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).