SOURCES SOUGHT
43 -- Split Case Centrifugal Pumps
- Notice Date
- 4/14/2011
- Notice Type
- Sources Sought
- NAICS
- 221310
— Water Supply and Irrigation Systems
- Contracting Office
- USACE District, Walla Walla, 201 N. Third Avenue, Walla Walla, WA 99362-1876
- ZIP Code
- 99362-1876
- Solicitation Number
- W912EF-11-R-SS31
- Response Due
- 4/21/2011
- Archive Date
- 6/20/2011
- Point of Contact
- Camilla Allen, 509-527-7213
- E-Mail Address
-
USACE District, Walla Walla
(camilla.allen@usace.army.mil)
- Small Business Set-Aside
- Total Small Business
- Description
- The US Army Corps of Engineers Walla Walla District is seeking Small Business Manufacturer sources to supply 2 two-stage horizontal split case centrifugal pumps. The specifications are as follows: 55-Mile HMU Pump and Motor Replacement Walla Walla District - Western Natural Resources Office SCOPE Contractor shall furnish and deliver two (2) replacement pump and motor sets, three (3) sets of O&M manuals and shop drawings to Natural Resources Office - Pasco Maintenance Shop. SPECIFICATION Existing pumps are two-stage horizontal split case centrifugal pumps from Aurora, Model 421BF. Replacement pumps shall be Aurora or approved equal. If submission is other than Aurora, contractor must submit technical specifications and drawings for review and approval prior to award to: US Corps of Engineers Attn: Cam Allen 223 North Third Street Walla Walla, WA 99362 camilla.allen@usace.army.mil Replacement pump and motor sets shall meet the following specifications: Both shall be two-stage, horizontal split case centrifugal pumps. Both pumps shall be right hand rotation; impeller rotation shall be clockwise, as viewed from the drive end of the pump shaft, with suction on the right, and discharge on the left, and flow spiraling away from the drive end. The casings shall have tapped and plugged holes for priming, vent and drain in each stage. Removal of the upper half of the casing must allow removal of the rotating element without disconnecting the suction or discharge piping. The bearing arms shall be cast integrally with the lower half of the casing to assure positive bearing alignment; bolt on bearing arms are unacceptable. Each bearing arm shall provide a reservoir area for accumulation of seepage and have drilled and tapped holes to direct seepage into floor drains (drain piping by the government). The impellers shall be enclosed type, bronze, cast in one piece. All surfaces shall be machined smooth and be free of burrs, trimmings and irregularities. The impellers shall be dynamically balanced, and be secured to the shaft by a shaft key and locked in place by threaded shaft sleeves. The shaft sleeves shall extend through the seal box area, and beyond the gland. They shall be sealed at the impeller hub by Buna-N O-rings to prevent pumped liquid from contacting the shaft. They shall be threaded securely in place, and designed to lock the impeller. The pump shafts shall be one-piece, 316 stainless steel, finished and polished. The shaft shall be of sufficient strength and rigidity and the shortest practicable distance between bearings shall be used to keep deflection and vibration to a minimum. The maximum allowable deflection of the shaft is 0.002" at any point of operation on the pump curve. The pumps shall be supplied with single row inboard bearings primarily for radial loads and double row outboard bearings primarily for thrust loads. Both bearings shall be re-greaseable ball bearings, designed for 250,000 hours average life, minimum. Each bearing shall be mounted in a machined housing that is moisture and dust proof. The housing shall have registered fits to assure alignment, pinned to prevent rotation, and bolted to the bearing arms. Each housing shall be supplied with a grease fitting and a plugged relief port. Flexible couplings shall be provided to connect pump shafts to the motor shafts. The couplings shall be of an all metal type with flexible rubber insert. The entire rotating coupling element shall be enclosed by a coupling guard. The pump casing shall be fitted with bronze wear rings to minimize abrasive and corrosive wear to the casing. The wearing rings shall be radial type, shall have a shoulder machined around the circumference to match a machined shoulder in the casing to provide two sealing faces and to locate the rings in the casing. Wear rings shall be pinned to the lower half of the casing to prevent rotation. A spacer and spacer wear ring shall be included between the impellers. The spacer wear ring shall also be pinned to the lower half casing. A stuffing box shall be provided on each side of the pump casing, with sufficient area to accommodate either packing and lantern rings or mechanical seals. Each stuffing box shall have holes drilled, tapped, and plugged to accept flushing water connections. Stuffing boxes shall be fitted with either tungsten-carbide or silicon-carbide mechanical seals. Lower housing shall include integral suction and discharge flanges. Suction flanges shall be Class 125, and discharge flanges shall be Class 300 (pipe sizes shown in the table below). Horizontal and vertical offset between suction and discharge flanges shall be as shown in the table below. Flange to flange distance shall be as shown in the table below. The motors shall be continuous duty, 480VAC, totally enclosed fan cooled (TEFC) premium efficiency electric motors. Service factor shall be 1.15. Motors shall be sized to no less than 110% shaft horsepower. Motor performance characteristics shall not exceed criteria listed below. Each pump and motor set shall be supplied coupled and mounted to a solid base. The base shall be sufficiently rigid to support the pump and motor without the use of additional supports or members. Set 1Pump and motor Flow @ 1750 RPM1280 GPM TDH @ 1750 RPM345' Suction Pipe Size8" Discharge Pipe Size6" Case Bore17" Suction to Discharge Horizontal Offset (Centerline)11" Suction to Discharge Vertical Offset (Centerline)-2" Flange to Flange Distance32-1/2" Motor Voltage480 VAC Maximum Motor Current 240 A Set 2Pump and motor Flow @ 1750 RPM320 GPM TDH @ 1750 RPM383' Suction Pipe Size4" Discharge Pipe Size3" Case Bore14" Suction to Discharge Horizontal Offset (Centerline)6-3/4" Suction to Discharge Vertical Offset (Centerline)- 1-1/2" Flange to Flange Distance24-3/8" Motor Voltage480 VAC Maximum Motor Current 77 A SCHEDULE Delivery shall be completed no later than 90 days after receipt of the contract award. Contractor shall make arrangements with Government Personnel at the site to deliver and unload the equipment. The delivery shall arrive between 7:00 a.m. and 3:00 p.m. during normal working days (Monday through Thursday) to: Natural Resources - Pasco Maintenance Shop 1215 E. Ainsworth Pasco, Wa. 99301 O & M MANUALS Contractor shall furnish three (3) copies of O & M manuals. The O & M manuals shall also include engineering data and a detailed parts list. The manuals shall be delivered with the product. WARRANTY Each unit shall be covered by a materials and workmanship warranty for a period of no less than one year from product acceptance.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USA/COE/DACA68/W912EF-11-R-SS31/listing.html)
- Place of Performance
- Address: USACE District, Walla Walla 201 N. Third Avenue, Walla Walla WA
- Zip Code: 99362-1876
- Zip Code: 99362-1876
- Record
- SN02425249-W 20110416/110414234908-303227cd39fb2bba21f7fbc9a3e67067 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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