Figure 10-8. Typical Process Instrument Loop

DOE-HDBK-1092-2004

Figure 10-8. Typical Process Instrument Loop.

10.9.2.2 MATERIALS USED IN AN UNCONVENTIONAL MANNER

The practice of using materials or components for purposes other than originally designed needs

special safety considerations in use, identification, personnel protection, and equipment

protection.

10.9.2.2.1 HAZARDS

The use of materials for something other than their original design criteria has the potential for

providing an additional hazard, especially to personnel unfamiliar with the research apparatus.

Personnel may assume that the material is used as originally designed and can unknowingly

expose themselves to hazards unless special precautions are followed.

Some examples of items used in an unconventional manner are:

1. Copper pipe used as an electrical conductor

2. Insulated flexible copper pipe used as an electrical conductor

3. Specially designed high-voltage or high-current connectors

4. Specially designed high-voltage or high-current switches

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