N.M. Code R. § 20.3.4.456
A. This section applies to each person licensed or registered by the department to:
(3) possess or use at any time, for processing or manufacturing for distribution pursuant to 20.3.3 NMAC or 20.3.7 NMAC, radioactive material in quantities exceeding any one of the following quantities:
TABLE 456.1 Radionuclide Activity1 Curies Gigabecquerels Cesium-137 1 37 Cobalt-60 1 37 Gold-198 100 3,700 Iodine-131 1 37 Iridium-192 10 370 Krypton-85 1,000 37,000 Promethium-147 10 370 Technetium-99m 1,000 37,000
TABLE 456.1
Radionuclide
Activity1
Curies
Gigabecquerels
Cesium-137
1
37
Cobalt-60
1
37
Gold-198
100
3,700
Iodine-131
1
37
Iridium-192
10
370
Krypton-85
1,000
37,000
Promethium-147
10
370
Technetium-99m
1,000
37,000
Table 456.1 note: 1the department may require as a license condition, or by rule, regulation or order pursuant to 20.3.1.111 NMAC, reports from licensees who are licensed to use radionuclides not on this list, in quantities sufficient to cause comparable radiation levels.
[20.3.4.456 NMAC - Rp, 20.3.4.456 NMAC, 4/30/2009]