Cherne was awarded the construction and construction management work for this project in a contract directly with Tesoro. This coker modification project allowed the refinery to reduce air emissions significantly as well as to lengthen its turnaround cycles and lower maintenance costs.
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The contract scope included the following work which was self-performed by Cherne:
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- Civil, Foundations
- Equipment Erection
- Piping
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- Instrumentation
- Electrical
- Insulation
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Cherne performed the following work on a subcontract basis:
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- Mass Excavation
- Sheet Piling
- Rebar Installation
- Fireproofing
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- Field Erected Tank
- Structural Steel Erection
- Painting
- Asphalt Paving
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The project required erection of a four-drum Coker Unit with coke handling auxiliaries, a flare unit, and miscellaneous other site construction activities totaling over 2 million craft labor hours. Cherne staff applied proprietary Cherne systems to accomplish the detailed planning and coordination of procurement and subcontract activities with the engineer and owner. This project also involved a unit turnaround coinciding with the completion of the Coker Unit.
This project had a large civil component, including installation of 40,000 cubic yards of concrete. In fact, the Coker foundation pour ran for over 24 hours while requiring over 800 truckloads of concrete.
Extensive overtime, including Saturday, Sunday, and night shift work was required in order to maintain productivity under the challenging 20 month schedule. Results were excellent and included a seamless unit turnaround, as well as an overall safe on-time project completion which met quality standards and client expectations.
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