Notice of Intent to Sole Source HDL Turbine Runner Digital Unloader

This requirement is for updating Lower Monumental Lock & Dam’s Governor Oil Pumps to replace the unloader valve assemblies on Main Units 1-3 Powerhouse Generators. Ice Harbor (HLD) Powerhouse Generator main units 1-3 require replacement of outdated analog governor oil pump unloaders with new solenoid-operated unloader. Each pump unloader at each unit should operate independent of the sister pump. Each pump has an instrument transformer located in the motor control bucket that will be used to control that pump’s unloader. All control equipment will be installed in a single cabinet for each unit. All equipment will be installed by USACE.