Exposure Sample Volume

DOE-STD-1187-2005

5.2.11.

Exposure Sample Volume: This is the volume of air sampled, in

liters, that was used to calculate the "Actual Exposure" above.

5.2.12.

8-hour TWA: Provide the 8-hour TWA (time weighted average) of

the worker's beryllium exposure for the work shift as determined by

personal monitoring of the worker or other method. The industrial

hygienist must calculate the 8-hour TWA before submitting the data to

the Registry coordinator. If monitoring results show levels of

beryllium that are less than the limit of quantitation, the 8-hour TWA

should be calculated using the limit of quantitation (e.g., 0.03 g/m3).

See Appendix D for an explanation of limit of quantitation. See

Appendix E for calculating 8-hour TWAs for non-standard work shifts

and sequential sample results including results that are LOQ.

5.2.13.

Exposure Method: Free form text describing the type of exposure

measuring method used. Personal breathing zone is most common.

Examples of other methods are use of direct-reading instruments, field

wet chemical analysis results, and presuming an exposure based on the

monitoring results of other workers performing similar tasks.

5.2.14.

Sampling Method: Describe the sampling method used. Examples

are procedures in the U.S. Department of Labor, Occupational Safety

and Health Administration, OSHA Technical Manual, Fourth Edition,

OSHA Instruction TED 1-0.15A, Washington, D.C., Government

Institute, Inc., 1-20-99; National Institute for Occupational Safety and

Health, Analytical Method 7102, Issue 1, 2-15-84; and National

Institute for Occupational Safety and Health, Analytical Method 7300,

Issue 2, 8-15-94.

5.2.15.

Analytic Method: Describe the analytic method used. Examples are

procedures in the U.S. Department of Labor, Occupational Safety and

Health Administration, OSHA Technical Manual, Fourth Edition,

OSHA Instruction TED 1-0.15A, Washington, D.C., Government

Institute, Inc., 1-20-99; National Institute for Occupational Safety and

Health, Analytical Method 7102, Issue 1, 2-15-84; and National

Institute for Occupational Safety and Health, Analytical Method 7300,

Issue 2, 8-15-94.

5.2.16.

Exposure Sampling Time: The length of time of the sampling that

generated the actual sample exposure level, Actual Exposure (field 9),

or an analogous length of time if possible, if the exposure was

presumed by some other method. Examples of other methods are use

of direct-reading instruments, field wet chemical analysis results, and

presuming an exposure based on the monitoring results of other

workers performing similar tasks.