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Title: Vacuum Excavation Techniques At Consolidated Edison
Author: Richard J. Morgan
Source: American Gas Association 1983
Year Published: 1983
Abstract: This presentation is designed to provide information on the status of Con Edisons attempts at improving productivity of its gas and steam distribution crews through use of nontraditional or alternative excavating techniques. The discussion focuses on the two types of vehicles engaged in vacuum excavation, as well as on some of the equipment involved in the program. The purpose of this presentation is to acquaint you with some recent developments and changes in excavating methods and techniques now in use at Con Edison by some of our Gas and Steam Operation crews. Con Edison Gas Distribution and Steam Operation crews usually consist of two men and a truck. In the past, the vehicle genersilly was an 18,000 lb. (Gross Vehicle Weight) step van equipped with a 150 cfm compressor. While there are backhoes assigned to both Gas and Steam Operations, they are relatively few in number in addition, subsurface conditions in a number of areas of our service territory do not permit us to take full advantage of the backhoes excavating capabilities. Normal gas distribution repair work requires a 3 x 5 surface opening, while a typical steam excavation requires a 6 x 6 opening. Obviously, a signiflcant percentage of the manhours expended in both gas and steam distribution repair work involves excavating. Our objective is to develop techniques and methods that will enable us to carry out the excavating functioning more quickly and efficiently.

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