StacksVerified U.S. regulatory reference

10 CFR §39.55

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Use of a tritium neutron generator target source, containing quantities not exceeding 1,110 GBg [30 curies] and in a well with a surface casing to protect fresh water aquifers, is subject to the requirements of this part except §§ 39.15, 39.41, and 39.77.
  2. (b)Use of a tritium neutron generator target source, containing quantities exceeding 1,110 GBg [30 curies] or in a well without a surface casing to protect fresh water aquifers, is subject to the requirements of this part except § 39.41.