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Title 10 Part 20 → Subpart A → §20.1005

Title 10 → Chapter I → Part 20 → Subpart A → §20.1005

Electronic Code of Federal Regulations e-CFR

Title 10 Part 20 → Subpart A → §20.1005

e-CFR data is current as of June 20, 2019

Title 10Chapter IPart 20Subpart A → §20.1005


Title 10: Energy
PART 20—STANDARDS FOR PROTECTION AGAINST RADIATION
Subpart A—General Provisions


§20.1005   Units of radioactivity.

For the purposes of this part, activity is expressed in the special unit of curies (Ci) or in the SI unit of becquerels (Bq), or their multiples, or disintegrations (transformations) per unit of time.

(a) One becquerel = 1 disintegration per second (s−1).

(b) One curie = 3.7 × 1010 disintegrations per second = 3.7 × 1010 becquerels = 2.22 × 1012 disintegrations per minute.

[56 FR 23391, May 21, 1991; 56 FR 61352, Dec. 3, 1991]