Description

Thomas/Wright, Inc. prepared the plans and specifications for the equipment retrofit at five wastewater pump stations for the City of Portland.

The Argyle and 13th Pump Station involved the addition of an engine-generator set for standby power to a 23-year old, 2.3 MGD pump station. The design included the installation of a 125 KW diesel fueled engine generator set to provide power during utility power outage. Also included were modifying the electrical system, adding a new automatic transfer switch, grading the expanded site, providing additional access to the pump station, and providing new security fencing with gates.

The Argyle & 19th Pump Station involved the addition of an engine-generator set for standby power to a 23-year old, 1.4 MGD pump station. The design included the installation of a 50 KW diesel fueled engine generator set to provide power during utility power outages. Also included were modifying the electrical system, adding a new automatic transfer switch in a person-accessible enclosure, providing a new security fence with gates for access and siting the engine-generator set and enclosure on the small site surrounded by a parking lot.

The Airport Way No. 2 Pump Station involved the remodeling of a 5-year old, 5.8 MGD pump station to replace the failed HVAC system and to add wet well gas monitoring and smoke detectors. The existing roof mounted gas fired make up air unit was replaced with an electronic furnace installed indoors. The electrical system was modified to accommodate the HVAC changes. Smoke detectors and fan failure sensors were added, the ducting was modified as required for the furnace changes, and automatic dampers were added to recirculate 75% of the dry well air to conserve energy when the pump station is unoccupied.

The Airport Way No. 3 Pump Station involved the remodel of a 5-year old, 4.0 MGD pump station to replace the heating system and to add smoke detectors, fan failure sensors and wet well hazardous gas monitoring. The design included replacing the existing gas-fired furnace with an electric unit and modifying the ducting, as required. Automatic dampers were included in the new ducting to recirculate 75% of the dry well air to conserve energy when the pump station is unoccupied.

The Swan Island Pump Station involved the addition of an engine-generator set for standby power to a 40-year old, 2.3 MGD pump station. The design included the installation of a 150 KW diesel fueled engine generator set to provide power during utility power outage. Also included were modifying the electrical system, adding a new automatic transfer switch, grading the expanded site, providing additional access to the pump station, and providing new security fencing with gates.