Sanitary Sewer System

DOE-HDBK-3010-94

Appendix B; Plutonium Recovery Facility

2.1.5.16 S an itary S ew er S ystem

The sanitary sewer system accepts effluent from washrooms, showers, clean utility system

drainage or blowdown, etc. It serves as a conduit to deliver waste water to the site sewage

plant.

2.1.5.17 C h em ical F arm

The chemical farm is a collection of storage tanks and support systems located approximately

60 feet to the south of H Plant. Storage tanks are provided for nitric acid, potassium

hydroxide, and hydrogen fluoride, with the areas around both tanks diked to hold the

majority of the fluid in the vessels. Two major gas systems are associated with the chemical

farm as well. One consists of two nitrogen supply vendor package nitrogen systems. Each

system is composed of a large vertical, double-insulated annular vessel for liquid nitrogen

with a net supply capacity of 350,000 scf of nitrogen. The vendor supplied system vaporizes

the nitrogen and supplies it initially at 90 psig. Tapoffs at this point are used to pressurize

the chemical storage tanks as the driving force for transfer into the H-Plant building.

Nitrogen pressure is reduced to 15 psig before transfer into the building, where it is used for

inerting the metal reduction line and the feed preparation line as necessary.

The second gas system supplies argon from a bank of compressed gas cylinders located along

the south wall of the H-1 building. The argon flow in the building passes through gas

purifiers to remove trace oxygen and moisture before reaching the metal reduction furnaces

where argon is used to establish an inert atmosphere.

2.1.5.18 D iesel F u el O il S ystem

The fuel oil supply source for the standby diesel generator is a 5000 gallon underground

storage tank on the west side of building H-3 B. This tank is a new installation and currently

meets all regulatory requirements. The old tank was removed in compliance with RCRA

regulations after it began to leak. The new tank is equipped with automatic pumps that are

actuated by a level switch in the diesel fuel day tank. This system ensures there is always a

minimum of 100 gallons of fuel in the day tank.

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