Designed cathodic protection systems for over 100 miles of steel pipelines ranging in size from 6” diameter to 36” diameter at various power plants including Moss Landing Power Plant, Morro Bay Power Plant, Humbolt Bay Power Plant, Diablo Canyon Nuclear Power Plant, Petrero Hill Power Plant, Hunters Point Power Plant, Contra Costa Power Plant and Pittsburg Power Plant.

Conducted an in-situ soil resistivity survey in China and prepared a cathodic protection system design criteria for 204 km of slurry pipeline. Project consisted of measuring in-situ soil resistivities at a spacing of 1-2 km using the Wenner 4-pin technique and using Barnes Layer Calculations to determine the corrosivity of the soils at pipe depth. Design criteria for cathodic protection was developed and engineering cost estimates were provided as part of a feasibility study.

Cathodic protection design for 50 miles of large diameter steel pipeline. Services included conducting the soil resistivity survey, performing all design calculations, installation drawings and technical specifications. Also, included were inspection services during construction and final system checkout and adjustment.

Designed a cathodic protection system for an 8” diameter, 302 km long slurry pipeline. This pipeline travels from the Andes Mountains to the ocean and ranges in elevation from 5,000 meters to sealevel. Cathodic protection for this pipeline utilized both AC powered rectifiers and DC powerd solar systems in remote locations. Telluric line currents were encountered on this pipeline resulting in extensive testing and monitoring of pipeline potentials in order to adjust the cathodic protection system adequately.

Cathodic protection design for 80 miles of 36” diameter steel pipeline. Services included conducting the soil resistivity survey, performing all design calculations, installation drawings and technical specifications. Also, included was inspection services during construction and final system checkout and adjustment.

Conducted a corrosion evaluation of the tailings pond site and prepared the performance specification and pre-design project estimate for a cathodic protection system for the discharge pipelines around the tailing pond. Services included the preparation of the design criteria, current requirement calculations, engineering estimate and cathodic protection system performance specification.

Designed cathodic protection system for 84” – 120” diameter intake cooling water pipelines as well as for the trash racks, traveling screens, salt water intake pumps, condenser water boxes and discharge pipeline for Generating Units 1 & 2. Cathodic protection design included both galvanic systems as well as various types of impressed current systems using both conventional high-silicon cast iron anodes and mixed-metal oxide coated titanium anodes.

Designed cathodic protection for 10.7 km long 16” diameter tailings pipeline. Cathodic protection system consisted of an impressed current system utilizing a shallow distributed anode bed. Our firm was responsible for developing the design criteria and preparing the design drawings and technical specifications along with engineering cost estimates for materials and construction. We provided technical support during installation also.

 

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