Attachment 1 - POWERHOUSE DRAINAGE PUMP - PD.pdf
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- Attached to
- Vertical lineshaft pumps
- Solicitation number
- W9127N26QA080
About this file
This is a Purchase Description for the procurement of two vertical lineshaft drainage pumps for Big Cliff Powerhouse, a remotely operated hydroelectric facility on the Santiam River in Oregon that has been in operation since 1953.
The procurement (Purchase PR 261T021) is driven by the failure of existing drainage pumps that have served for over 30 years without available replacement components. Currently, only one pump remains operational, creating a critical reliability gap in the facility's drainage system and forcing reliance on manual operator intervention via a temporary submersible pump. The replacement pumps will restore automated drainage capability and eliminate the operational burden on staff, particularly during weekend shifts when operator availability is severely limited.
The Government requires two vertical lineshaft pumps with the following specifications: 4" 150# ANSI 16.5 flange outlet, 75 GPM flow capacity at 70 feet of head, 45-foot height from inlet to outlet centerline, 1-inch diameter 400-series stainless steel lineshaft in 5-foot sections with water-lubricated bearings, bronze impellers, cast iron bowls, continuously rising pump curve, basket strainers at inlets, and motors rated up to 3.0 horsepower with a service factor of 1.15 or greater operating on 3-phase, 480V, 60Hz power at 1800 rpm or less. The pumps must handle potentially silty water at temperatures between 39°F and 65°F. Vendors must provide shop drawings and performance data sheets including pump curves for Government review prior to purchase. Delivery must be made to Detroit Dam in Mill City, Oregon, with all shipping costs borne by the contractor, and deliveries restricted to Monday through Thursday between 0700 and 1600 hours.
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Text version
PURCHASE DESCRIPTION
BIG CLIFF POWERHOUSE DRAINAGE PUMP REPLACEMENT
PURCHASE PR 261T021
Scope:
This Purchase Description (PD) covers the purchase of two (2) vertical lineshaft pumps for Big Cliff Powerhouse.
Background:
Big Cliff Powerhouse is a remotely operated site that has been in commission since 1953 both generating power and regulating the flow of the Santiam River. Our facilities have elaborate drainage schemes for various floor drains and sumps which all collect at a common “drainage sump”. Under normal operation, the facility has two drainage pumps in lead-lag control to maintain the level of the drainage sump. These pumps have been maintained throughout their service life of 30+ years, but spare components are no longer available for upkeep or refurbishment. Last year, one of the pumps completely seized and the other pump began showing the same signs the failed pump gave before seizing.
Justification:
With only one pump in service, our capacity to drain the facility without intervention is halved. As a temporary measure, we were able to suspend a submersible pump in the drainage sump to support the remaining vertical lineshaft pump.
The addition of this submersible pump allows us to drain the sump should the remaining pump fail but requires an Operator to be sent to site to run them. On initial effort, the crew was unable to tie the submersible pump to the existing lead/lag control system. Due to this limitation, sump level indication will be used as notification to send an Operator to site rather than to turn on the pump.
With Operator availability already being a limiting factor for operations in the valley, we are concerned about the opportunity cost of making on site drainage sump level maintenance at Big Cliff a regular job activity instead of an automated process. This issue is made significantly worse during weekends when only one operator is normally scheduled, meaning under regular circumstances, there is nobody free to go to Big Cliff to operate the submersible pumps.
By replacing these pumps with new commercially available pumps: we will allow us to buy back the reliability of our drainage system, take responsibility for directly maintaining sump levels off the hands of operators, and give us a platform that we should be able to maintain for another 30+ years of operation.
Requirements:
Two (2) Vertical lineshaft pumps
Quantity Description
Outlet: 4” 150# ANSI 16.5 Flange compatible Flow: 75 GPM at 70ft head Static Head: 70 ft Pump Curve: Continuously rising Pump Formfactor: Vertical lineshaft with multistage impellers at inlet Pump Height: 45’ from inlet to centerline of outlet flange Lineshaft: 1” diameter, 5’ sections, 400 series stainless steel Lineshaft Couplings: Coupling design capacity shall be the published manufacturer service rating divided by 1.5 Lineshaft Bearings: Water lubricated except for motor base bearing which may use oil or grease Impeller Material: Bronze Bowl Material: Cast Iron Prelubrication: If needed, a prelubrication water line will be provided Column Pipe: 5’ sections with flanged connections, 400 series stainless steel Pumped Media: Potentially silty water, temperature ranging 39°-65° F Filtering: Inlets must have basket strainers Motors: Up to 3.0 hp with a service factor of 1.15 or greater Motor Power Supply: 3 phase, 480 V, 60 hz circuit Pump Speed: 1800 rpm or less
Required Data:
Shop drawings and any applicable performance data sheets including pump curves. Project to review orders and drawings prior to purchase.
Projected Cost:
Estimated cost is:
Shipping:
Pumps shall be delivered to Detroit Dam, 40990 Highway 22, Mill City, OR, 97360. The Government shall not be responsible for the cost of shipping to Detroit Dam. Deliveries must be made Monday-Thursday between 0700-1600.
POC:
PM: Jay Raitt, jay.w.raitt@usace.army.mil Contract Specialist: Consuelo Kiser, consuelo.j.kiser@usace.army.mil Contracting Officer: Darrell D. Hutchens, darrell.d.hutchens@usace.army.mil
File details come from the government source that posted it. Updated .