Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

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)

Page Last Reviewed/Updated Wednesday, December 13, 2017