Neb. Admin. Code HEALTH AND HUMAN SERVICES SYSTEM, tit. 180, ch. 4, app 4-H

Current through September 17, 2024
Appendix 4-H - NATIONALLY TRACKED SOURCE THRESHOLDS

The Terabecquerel (TBq) values are the regulatory standard. The curie (Ci) values specified are obtained by converting from the TBq value. The curie values are provided for practical usefulness only and are rounded after conversion.

Radioactive material

Category 1 (TBq)

Category 1 (Ci)

Category 2 (TBq)

Category 2 (Ci)

Actinium-227

20

540

0.2

5.4

Americium-241

60

1,600

0.6

16

Americium-241/Be

60

1,600

0.6

16

Californium-252

20

540

0.2

5.4

Cobalt-60

30

810

0.3

8.1

Curium-244

50

1,400

0.5

14

Cesium-137

100

2,700

1.0

27

Gadolinium-153

1,000

27,000

10

270

Iridum-192

80

2,200

0.8

22

Plutonium-238

60

1,600

0.6

16

Plutonium-239/Be

60

1,600

0.6

16

Polonium-210

60

1,600

0.6

16

Promethium-147

40,000

1,100,000

400

11,000

Radium-226

40

1,100

0.4

11

Selenium-75

200

5,400

2

54

Strontium-90

1,000

27,000

10

270

Thorium-228

20

540

0.2

5.4

Thorium-229

20

540

0.2

5.4

Thulium-170

20,000

540,000

200

5,400

Ytterbium-169

300

8,100

3

81

Neb. Admin. Code HEALTH AND HUMAN SERVICES SYSTEM, tit. 180, ch. 4, app 4-H

Amended effective 6/7/2021