Table 2 -13. Impact of Requirement To Monitor at 2%

DOE-STD -1136-2004

Guide of Good Practices for Occupational Radiological Protection in Uranium Facilities

Table 2 -13. Impact of Requirement To Monitor at 2%

Enrichments above which radiological concerns predominate

Acute

Chronic

Transportability

Using 100% of

Using 2% of

Using 100% of

Using 2% of

Class

Radiological Limit

(1)

7.38%

18%

(2)

52.8%

0.52%

12.8%

(2)

0.82%

(2)

(1) Chemical toxicity concerns are limiting at all enrichments.

(2) Radiological effects are limiting at all enrichments.

Example 3a - General Solution, Acute Exposure

Step 1. Determine the intake that results in a kidney burden of 0.337 mg:

Step 2. Use the quadratic formula and equation for determining specific activity to calculate the enrichment

that corresponds to the specific activity obtained in Step 1.

Step 3. One solution will be less than zero. The other will be the enrichment that is the "dividing line"

between chemical and radiological effects.

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