{"data":{"id":"us/10-cfr-39.55","jurisdiction":"us","citation":"10 CFR 39.55","heading":"Tritium neutron generator target sources.","body":"(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.\n(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.","path":["Title 10—Energy","CHAPTER I—NUCLEAR REGULATORY COMMISSION","PART 39—LICENSES AND RADIATION SAFETY REQUIREMENTS FOR WELL LOGGING","Subpart C—Equipment"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"0b29ccd3b101d7a0cbbe47fac0ba16877319de81b80cc2804eaaf4247a3be6f2","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-39.53","next":"us/10-cfr-39.61"},"notice":"GroundRules: Original legal text. Not legal advice."}