Instrumentation and Controls Considerations

DOE-HDBK-1132-99

Simple check valves without external actuation should never be used as stop

valves and should be used as flow reversal preventers.

Butterfly valves should be used for stop valves or for throttling purposes in water

systems.

Ball valves should be used for bubble-tight stop valves in relatively clean fluid

services.

Plug valves can be used for bubble-tight stop valves in a variety of fluid services.

Diaphragm valves are used as stop valves in variety of services from clean to

dirty fluids including liquids with suspended solids and scale-forming liquids.

INSTRUMENTATION AND CONTROLS CONSIDERATIONS

This section contains design considerations useful to instrumentation and control design

personnel. Data and digital control systems are undergoing dramatic changes as

workstations and electronic storage media become less expensive. The guidance in this

section is based on experience with existing instrumentation and control systems. The

designers of new facilities should consider the use of " est available"proven technology

for new instrumentation and control systems.

4.1

Control Centers/Control Rooms . Control centers or control rooms play a vital role in

the operation of a facility. The following factors should be addressed in the design of a

control center or control room:

number of required operating personnel;

number and types of processes to be operated;

duties of operating personnel;

control panel and consoles arrangement;

operator man-machine interface;

instrument equipment functions;

testing considerations;

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