Raschig Ring Line

DOE-HDBK-3010-94

Appendix B; Production Support Lab

Computer readouts from the instrument provide estimates of isotope quantities for specific

elements.

3.2.6 R asch ig R in g L in e

New and used raschig rings are examined in this room, with used rings being examined in a

small glovebox. The major tests are: (1) neutron absorption test using a packaged source

and absorption instrument, (2) chemical stability test performed by immersion in a heated

nitric acid bath, and (3) physical strength test performed by rotating in a tumbler.

3.2.7 T h erm al A n alysis L in e

This line serves to allow thermal characterization of samples, including metallic plutonium.

A 10-position storage rack is provided for sample vials, and a storage can for up to 5

leftover sample vials awaiting recycle to the process. Differential thermal analysis measures

the endothermic or exothermic response of sample material to heating over a selected

temperature range. Thermogravimetric analysis determines the weight change of sample

material over a selected temperature range. A small arc welding unit is provided in the box

for sealing sample holders prior to measurement.

3.2.8 A tom ic A b s orp tion L in e

This small line receives samples generated in the liquid or solid handling lines. An

automated atomic absorption unit integral to the glovebox receives a supply of acetylene gas

from a vendor-supplied bottle stored in the room. This gas provides a small flame into

which the sample is aspirated. Differences in light transmission as the sample passes through

the flame are used to determine quantities of selected impurities in the original sample. The

line is equipped with a 20-position sample vial storage rack.

3.2.9 S olid W aste an d R esid u e H an d lin g

All solid waste is taken to the Plutonium Recovery Facility pail assay area upon generation.

3.3 H A Z A R D I DE N T I FI CA T I ON

This document presents in tabular form the hazards identified by the team evaluating the H-7

Production Support Lab. It examines each of the major activities and areas of the facility.

The two general types of hazards identified are as follows:

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