U.S. Nuclear Regulatory Commission
Allowable Contamination Limit for Thorium-natural
Title: Allowable Contamination Limit for Thorium-natural
See the memorandum written for files by R. G. Page and
dated August 27, 1982. This memo concerned a telephone
conversation with Mark Whittaker of Chem. Nuclear, Inc.
The memorandum states that the allowable contamination
limit in the Guidelines for Decontamination of Facilities
for Unrestricted Use or Termination of Licenses for
Byproduct, Source or Special Nuclear Material for
"thorium-nat" is the total radioactivity present from
thorium radionuclides plus all daughters.
Regulatory references: 10 CFR 30.3, 10 CFR 40.3, 10 CFR
Subject codes: 3.6, 5.0, 7.6, 12.4
Applicability: Source Material