Cold Chemical Storage and Supply

DOE-HDBK-3010-94

Appendix B; Plutonium Recovery Facility

This vial is transferred to the laboratory annex for analysis in a CRC canister mounted on the

back of the glovebox.

For tanks external to gloveboxes, a similar sampling method is used in the sampling

glovebox. This glovebox has three separate pumps and sample lines for three general types

of solution (e.g., pre-ion exchange process solutions, post-ion exchange process solutions,

and waste solutions). Vials are removed from the sample glovebox via an airlock on the

maintenance side of the cabinet and placed in plastic waste pails for transfer to the laboratory

annex. Different colored labels are used to distinguish samples from different systems.

2.1.5.8 C old C h em ical S torage an d S u p p ly

Cold (i.e., not radioactively contaminated) liquid feed chemicals are kept in stainless steel

storage tanks on the second floor of the H-Plant. The tanks are grouped together in six

major sections, each of which is surrounded by a small retaining dike. All tanks are

equipped with sightglass level indication, and certain tanks have local and remote alarms to

minimize operational disruptions. Tanks that will be mixed with water or that can

experience stagnation problems over a short period of time are equipped with agitators.

Although the cold chemical area is separated from the rest of the facility by an airlock, it is

intended that this area remain uncontaminated. To support this goal, all chemical feed lines

that go to gloveboxes or contaminated tanks on the first floor are equipped with liquid seal

pots on the first floor to prevent drawing liquid from the first floor back into the feed tanks.

Some liquid chemicals that are used in small amounts and prepared to the right concentration

by manually mixing with water in tanks are kept in bottles stored in a distinct room. Other

distinct storage rooms include the 35% H2O2 55-gallon drum storage room, the ion exchange

resin storage room, the dry chemical storage room, and the HF evaporator room. The HF

evaporator room houses the small evaporator that is heated to generate HF gas from the

liquid HF transferred into the building from the chemical farm.

2.1.5.9 F acility C on trol R oom

The H Plant control area is located outside the regulated production area. It provides

monitoring capability for significant process parameter indications, such as temperatures,

flowrates, and levels for all glovebox and tank farm operations. Operational controls for

gloveboxes and tanks are provided at local control stations and are not available in the

control room. Local control stations are equipped with a shutdown switch that shuts all air-

operated liquid supply valves and secures power to glovebox equipment when operated.

Lights in the control room illuminate to indicate when shutdown switches have been used.

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