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Title: Protection Of Measuring Station Instrumentation And Communication Equipment
Author: David Crandall
Source: 2007 Appalachian Gas Measurement Short Course
Year Published: 2007
Abstract: Instrumentation installed on gas pipelines is forced to survive exposure to surges from lightning and electrical utility disturbances. The environmental setting is extreme compared to other types of installations. Without giving proper attention to protect instrumentation in this outdoor setting the chances of an instrument surviving the full extent of its useful life can be very low. This paper examines transients and surges and how to protect installations from those effects. Every year pipeline companies spend hundreds of thousands of dollars replacing equipment destroyed by lightning strikes that hit in the vicinity of installed equipment. What are the consequences of these losses? First, the damaged equipment is replaced but secondly, reduction of the system availability impacts profitability of the company. In addition, there is a personal element to the losses. For example personal time with the family may be impacted due to overtime requirements. It is possible the public safety can be compromised which would tarnish the reputation of the company. Surges are critically important to understand not only from the standpoint of protecting the investment your organization has in its facilities, but to think of the overall cost incurred which usually is much larger than the replacement cost of the equipment.

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