United States Nuclear Regulatory Commission - Protecting People and the Environment

Health Physics Questions and Answers - Question 73

Question 73: Table 1004 (b).2 does not include entries for "cold" neutrons, (e.g., 7 x 10E-9 MeV neutrons) which are used in experiments at some research reactor facilities. What values of the quality factor, Q, and the fluence per unit dose equivalent should be used for "cold" neutrons?

Answer: The values for "thermal neutrons" should be used until the use of other values is approved by the NRC.

(Reference: 10 CFR 20.1004 Table 1004 (b).2)

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