Seismic Instrumentation Systems Within a Utility

Utility systems in regions where seismic activity occurs frequently (especially in California) face the added task of monitoring the motion of their facilities due to ground shaking. This paper discusses the seismic instrumentation system of one Southern California electric utility. The company's instrumentation falls into three categories:

1. 1.
   Company initiated, supported and operated,
2. 2.
   California State agency initiated, supported and operated, and
3. 3.
   Federal agency initiated, company supported and operated.