Chaffins Substation Upgrades

Holden Municipal Light Department

Description

G. Greene Civil and Utility division upgraded Holden Municipal Light Department’s electrical substation. The scope of work included installation of drilled shaft foundations, precast manholes, below grade conduit, transformer drainage pipe with precast oil water separator tank and pumping chamber. The civil division also installed cast in place concrete piers, footings and containment walls. Lastly, the crew installed a transformer containment pit with a geocomposite liner and a CMU blast wall. Work was completed with site grading and asphalt paving.

Approach

Sequenced the installation of the caissons in order to keep substation functional
Sequenced the installation of the geocomposite liners in order to maintain functionality of transformers
Phased replacement of 115kV transformers and switchgear