DJI and Associates, Inc.
Engineering, Design and Drafting Services

Project Experience

Lead Line Valve Operators Replacement Cost Estimate


To prepare a total installed cost estimate to convert station valve operators from hydraulic to either electric or pneumatic actuation.


St. John Compressor Station

Lake County, Indiana


ANR Pipeline Company / El Paso Energy

11039 150th Avenue

Big Rapids, MI  49307


Project Description:

Provided a detailed cost estimate for the replacement of the existing 12 TCVC, lead line valve operators at St. John’s Compressor Station.  The cost estimate included installed cost of electric valve operators in comparison to pneumatic operators.  An electrical load study was also performed to determine whether sufficient 480Vac power was available at the station, if electric operators were installed.  Comparison between existing loads as indicated on the station drawings and actual station loads were done.