Facility Layout

DOE-HDBK-1132-99

Other aspects of the layout, such as relative location and orientation of a piece of

equipment, size and location of ductwork, accessibility, etc., are based on operational

and maintenance experience.

Facility Layout.

1.1

General. Because processing steps are most often contained in individual

1.1.1

process rooms or cells, it is usually a good practice to separate general office

areas from nonreactor nuclear facilities. Some of the reasons for this are the risk

of radioactive contamination, the need for separate heating and ventilation

systems, and differing code requirements based on occupancy.

Facilities and building services are planned to achieve maximum flexibility and

ease of access. Priority in design is given to gravity-flow piped services and

utilities, large air distribution, and exhaust duct headers. When developing the

general arrangement consider the following:

Adequate space for convenient access to each component (including

piping, wiring, control tubing, etc.) during maintenance and inspection that

does not require major disassembly.

Zones (space) in vertical and horizontal service chases.

Service header sizes;

Minimizing utility runs by grouping like functions, such as laboratories,

toilet rooms, and equipment rooms.

Minimizing exterior and interior penetrations through building elements

(i.e., walls, floors, roofs, etc.).

Minimizing the amount of floor space devoted to circulation, such as

vestibules, corridors, stairs.

II-2