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10 C.F.R. § 20.1005   Units of radioactivity.

Title 10 - Energy

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

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§ 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]

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