SOLICITATION NOTICE
37 -- Linear Irrigation System
- Notice Date
- 2/18/2005
- Notice Type
- Solicitation Notice
- NAICS
- 221310
— Water Supply and Irrigation Systems
- Contracting Office
- Department of Agriculture, Agricultural Research Service, South Atlantic Area/Tifton, GA, 2316 Rainwater Road, Tifton, GA, 31793
- ZIP Code
- 31793
- Solicitation Number
- RFQ-05-4389-01
- Response Due
- 3/7/2005
- Archive Date
- 3/22/2005
- Small Business Set-Aside
- Total Small Business
- Description
- This is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6, as supplemented with additional information included this notice. This announcement constitutes the only solicitation; quotations are being requested and a written solicitation will not be issued. The solicitation number RFQ-05-4389-01 is issued as a request for quotations and incorporates provisions and clauses that are in effect through FAC 01-27. FAR 52.219-6, Notice of Total Small Business Set-Aside is applicable to this acquisition. The NAICS code is 221310. Standard Industrial Classification (SIC) code is 4971. The small business size standard is 500 employees. Item description : GENERAL DESCRIPTION OF WORK: Install and place in satisfactory operating condition one (1) 561" Linear hose drag center electric drive multi-tower irrigation systems and all required appurtenances in accordance with the plans and specifications of manufacturer, except as noted under exceptions. Each unit will be a self-contained, electrically propelled land irrigation system driven by individual drive unit structures supported on rubber pneumatic tires. The basic power train will consist of a three-phase electric motor at each drive tower that will drive the wheels through a series of worm gear reductions. Each tower ill be electrically controlled to maintain the selected operating speed and correct alignment. A electric cord will transfer necessary power to propel the system. GENERAL DESIGN CRITERIA: All equipment furnished under this section of the specifications will be new and unused, and will be the product of a manufacturer having successful experience in the manufacture of linear irrigation systems. All equipment provided will be capable of maximum interchangeability of spare parts. The equipment incorporated in this system will be the product of, and furnished by, a manufacturer who is regularly engaged in the production of such equipment for similar applications, and who has an experience record of fifteen (15) years with installations similar to that contemplated in these specifications. All of the equipment will be the manufacturer's latest and proven design. All electrical components of the system will operate from a 480-volt, three-phase, 60-Hertz, 4-wire power supply to be provided at installation site. All controls for the electrically operated or motor driven equipment will be complete, including all necessary auxiliary relays to operate with an engine-generator set. All necessary fuses or switches required by the manufacturer for his equipment will be provided with the equipment. BASIS OF BID: It is the intent of the specifications that all equipment called for under this section of the specification shall be supplied by the linear irrigation system manufacturer. Erection the irrigation equipment will be with one or more factory trained personnel. This will include assembly of the mechanical portion of the linear sprinkler systems, and start-up and adjustment of the equipment. Responsibility will be concluded when the linear system has been operated continuously for one (1) field cycle (forward and reverse trip). INSTRUCTION MANUALS: One (1) copy of the Owner?s Manual will be inserted inside the door of the main control panel along with two copies of the control panel Owner?s Manual. STRUCTURAL: The four legged cart structure will be erected with 5/16" x 3" x 4" angle. The diagonal braces will be 1.66" x 12 gauge tube and the horizontal braces will be .125" x 1" x 2" channel. Dual water inlet ports with check assemblies will be provided to accommodate the attaching and detaching of the water delivery hose. The main structural water supply pipe will be constructed from 0.105" (12 ga.), 6 5/8" O.D. steel tubing. Individual pipe assemblies will be connected by inserting molded urethane seals (gaskets) between 8 hole 3/8? thick flanges and using 1/2? plated cap screws and hex lock nuts to secure the pipe sections. Drive unit weight, including water, will be approximately 7,065 lbs. for the 187' spans. The pipe support structure of the linear unit will be a bow string, undertruss design. Vee positioned truss angles will be 3/16" x 2" x 2" and attached to the pipe line and additionally supported with a spreader gusset. Truss rods will be a minimum 3/4" diameter carbon steel and rod will have hot forged head ends. The pipe will have an external ball and socket flex joint unit, which allows for span to span flexibility, and does not transmit bending or torsion stresses into the pipe. The pipeline flex hose will be replaceable without disengaging the structural components of the flex joint and without any lifting equipment. The flex joint will not obstruct the flow inside the pipeline. The flex hose is attached to ends of the swivel and fixed pipes with plated adjustable clamps. The flex hose is rated at 150 PSI working pressure. The drive unit tower will be a four legged structure designed to withstand the forces induced when traversing the field. The drive unit legs will fabricated from 1/4" x 3" x 3" angle. Two diagonal and six horizontal braces will provide rigidity and strength for the drive unit. The horizontal base beam at the lower end of the structure will be constructed of 6 5/8" O.D. pipe and will provide a wheel base of 13.3 feet.. All critical structural members, including the pipe, will be hot dip galvanized per ASTM Specification 123 on all surfaces, with the exception of the various small components, including the tower box alignment bar, which will be painted. The alignment bar will be constructed with a stainless steel threaded rod and stainless nut to ensure positive tower alignment adjustment can be accomplished. The swivel and fixed pipe of each span will be constructed of one piece tubing to reduce the flange connection when compared to using stub pipes. No stub pipe assemblies will be used. Drive unit legs will be attached to the one piece fixed or last pipe assembly to minimize the number of flanged connections on each span. All cap screws will be Grade 5 minimum. Locknuts must be used in all structural assemblies. All fasteners will be commercially zinc plated. Tubular tower supports (2.875? x 14 gauge) will be attached between the drive unit legs and the fixed pipe attachment ears. The tower supports will also be tied into the truss rods with ?U?-bolts and a cross channel member. This provides a unitized support structure to handle tension and compression forces imposed on the drive units as they move across the field. DRIVE TRAIN: Centerdrive Gear Motor. The intermediate drive units will utilize helical gear centerdrive electric motors. These will be totally enclosed irrigation duty, and capable of operating under extreme environmental conditions. The centerdrive motors will be 1.2 Hp with a thermal sensitive device to protect the motor against excessive current or heat. One (1) motor at each drive unit provides input power to the two wheel gearboxes and will operate at and 3600 (2-pole) RPM for high speed operation. The motors will be rated at 1100 in.-lb. continuos torque and at 7000in.-lb. starting torque. Nameplate amp draw will be 1.8 (1.2 Hp) for the motors with a 1.3 service factor. The ribbed aluminum motor housing will be fastened to the gear reducer with external plated stator bolts. The cart and the last drive unit will utilize worm drive centerdrive electric motors. These will be totally enclosed irrigation duty, and capable of operating under extreme environmental conditions. The centerdrive motors will be 1.5 Hp with a thermal sensitive device to protect the motor against excessive current or heat. One (1) motor at each drive unit provides input power to the two wheel gearboxes. The nameplate amp draw will be 2.55 amps. The wheel drive gearboxes will be a self-locking worm gear design to provide positive braking. The cast iron worm wheel and integral ductile worm input shaft uses a 25 degree pressure angle design for full recessed action and proper lubrication. The worm and bearings will operate in a submerged oil bath. The system will be equipped with heavy duty gearboxes (52:1 gear ratios) with a rating of 30,000 in.-lbs. continuous output torque for a minimum of 300 operating hours, and capable of withstanding 90,000 in.-lbs. instantaneous output torque without failure. The output shaft of the wheel gearbox will be a minimum 2 1/4" diameter, stress relieved, cold drawn steel. The seal area of the input shaft will be hardened to 30 RC minimum and double lipped oil seals will be used. The drive shaft will be adequately shielded to meet OSHA safety standards. All gear reducers will be properly filled with lubricant by the manufacturer. Visual inspection of the lubricant will be provided by removal of the access cover. The gearboxes as shipped will be filled with oil to its normal operating level and hermetically sealed with a rubber diaphragm and 15.86 cubic inch expansion chamber cap assembly. The original lubricant will meet AGMA #8EP and SAE 85/140 oil specifications. The drive shafts will be designed to withstand the maximum torque of the drive train with no permanent deformation and will be 7/8" square cold drawn steel. The drive shaft will be adequately shielded. Greaseless U-joints will be furnished with the system. U-joint will incorporate flexible urethane inserts to absorb shock from motor starts and reduce stress. Urethane inserts anchored between cast aluminum yokes, will be attached to drive shafts with four (4) 1/4" cap screws. Wheels will have an R-1 agricultural traction tread tire. Traction lugs will be a minimum 1" deep and a minimum 1" wide. Each 14.9" x 24" x 4 ply agricultural tire will be mounted on a 12" x 24" rim with a minimum gross contact area of 196 square inches. The rims will be hot dipped galvanized in accordance to ASTM 123. WATER DISTRIBUTION: Nelson D-3000 spray nozzles will operate at a minimum of 10 psi at the outermost end and discharge water at the specified flow rate for the system. 15psi pressure regulators will be used. Sprinkler attachment couplings will be 3/4" NPT mounted on top of the pipeline, and at a maximum spacing of 30 inches. The spray nozzles will be attached to hose drop tubes and will discharge water at 7.0 feet above the soil surface. GUIDANCE: Above ground cable guidance will be used to ?steer? the linear machine across the field. This will be accomplished by utilizing a cable stretched in a straight line approximately 28 inches above the ground and supported every 80 feet by steel posts with 4 inch steel posts at each end. Arms on the linear cart will support a forward and reverse steering box on each end of the cart. Wands on the steering box will straddle the cable and sense the relationship of the cart to the cable and provide input to the steering box to guide the linear down the field. LINEAR CONTROL MODULE: The essential characteristics include: Programmable capability for remote execution of commands: Stop position according to time expected at position, Change speeds according to time, Change depth of water applied according to time, Start/stop end gun (if installed) according to time, Stop pump in case of linear malfunction, System shut-down in service road - (end of field stop), Optional, can be linked to PC via radio telemetry, Sstart/stop auxiliary pump (i.e., chemigation) based on time. Self diagnostics mode - indicator fault:: System power - low, System safety - break in system safety circuit, Pressure - loss of water pressure, Command - indicates commanded shut down, Stop in slot - indicates if system is in the stop in slot position. SOFTWARE: Software will be provided which will provide additional control capabilities. This should allow programming by distance of up to four different zones along the linear is equipped for automatic control. Backlit, numerical "key pad" controls and command selection keys to enter constants and programs steps. Low voltage monitor, surge protection, lightning arrestor, hour meter stop in slot and end gun control are standard features. Backlit screen to assist in low light conditions. Control for auxiliary function such as a chemigation pump. POWER SUPPLY TO THE LINEAR SPRINKLER CART: Three phase 60 Hertz 440/480 AC power will be delivered to the linear cart unit via a four conductor (three power plus ground) 8 gauge, Type W, 600 Volt, 90 degree C Rating cable. A 30 amp Max-Gard plug will connect one end of the cable to a 30 amp receptacle mounted on the power pedestal and junction box assembly. The power pedestals and junction boxes will be strategically positioned according to the maximum allowable distance between the junction outlets and within the manufactures recommendation for service in this application. A 30 amp Allen Bradley ground fault sensor will be installed in the main control panel to provide equipment protection. The cable will be forty feet greater length than the flexible water delivery hose to reduce tangling and interference during operation. The linear unit will be equipped with end of hose shut down to prevent damage to the flexible water hose and electrical power supply cable as it nears the end of the maximum travel length. Repositioning will be required unless additional hose and cable are provided as a convenience to the operator. ELECTRICAL: The system electrical circuits will operate from a 440/480-volt, three-phase, 4-wire power (with ground) source with a step down 120 VAC transformer for the seven conductor 120-volt, VAC., single-phase control and safety circuits. The main power cable from the cart control panel to the tower boxes will be 12 conductor a minimum 12 gauge stranded copper wire. All exposed wiring will be bundled and jacketed with a black, U.V. stabilized vinyl cable jacketing material. The main control panel and individual tower boxes will be constructed to meet or exceed the standards for a National Electrical Manufacturers Association (NEMA), Type 3R enclosure. All operator controls will be protected from the elements by an outside door. The main panel will also be provided with latches to accommodate a padlock. Thirty (30) ampere, 480-volt, three-phase, 4-wire, 60-cycle electrical power will be furnished to the main control panel. All wiring will be color coded. The electrical alignment system will consist of micro-switches for control (alignment) and safety shutdown. Intermediate drive units shall be equipped with one second time delay. Span to span alignment is maintained through a pair of cables running parallel to the span on each side. These cables are attached through a mechanical linkage arrangement to the cam assembly that opens or closes the micro-switches for either run, stop or safety out functions. Integral, thermal sensitive automatic reset overload protection will be provided for all 480-volt motors. A suppresser circuit will be provided in each tower control box to reduce arcing at contacts. Electric irrigation system should be designed and manufactured according to the National Electrical Code (NEC) Article 675, including: Article 430 - motors, motor circuits and controllers, Article 250 - grounding, Article 240 - overcurrent protection, Article 310 - conductors for general wiring. Equipment should be designed to meet the conditions outlined in ASAE Standard: ASAE S362. This standard covers all electrical equipment, apparatus, component and wiring necessary for electrically driven or controlled irrigation machines from the point of connection of the electric power to the machine. Other Standards cited are: ASAE 318 - Safety for Agricultural Equipment, ASAE S350 - Safety Alert Symbol for Agricultural Equipment, ANSI 235-1 - Specification for Accident Prevention Signs, NEMA 151.1 - Controls and System, FPA No. 70 - National Electric Code. All electrical components and wiring will meet or exceed the requirements of the National Electric Code, Article 675, and American Society of Agricultural Engineers Standard S362, "Wiring and Equipment for Electrically Driven or Controlled Irrigation Machine." TRAINING: The manufacturer will conduct a two (2) hour course which will address system operations and maintenance. This will be a combination of classroom and field training. Vendor MUST send descriptive literature. Payment under this contract will be made by electronic funds transfer. Successful offeror must accept government purchase card or be set up with USDA vendor express program at the time invoice is submitted, vendor also MUST be registered in CCR before an order is placed. WWW.CCR.GOV Delivery is required within 6 weeks ARO. Delivery is FOB Destination to USDA, ARS, Dawson, GA, 39842. The government anticipates award or a contract resulting from this solicitation to the responsive/responsible offeror whose offer conforms to the solicitation and is most price advantageous to the government. The provision at 52.212-2, Evaluation - Commercial items, applies to this acquisition. The contracting officer will make award based on price, price-related factors and Quality. FAR 52.212-3 Offeror Representations and Certifications- Commercial Items. The offeror MUST complete the annual representations and certifications electronically via the Business Partner Network (BPN) web site at http://orca.bpn.gov . FAR 52.212-4, Contract Terms and Conditions - Commercial items, applies to this acquisition. The following FAR clauses cited in 52.212-5 are applicable to this acquisition: 52-203-3 Gratuities; 52.222-4 Overtime Compensation; 52.222-6 Davis-Bacon Act; 52.222-8 Payrolls and Baic Records; 52.222-35 Equal Opportunity; 52.222-36 Affirmative Action; 52-222-37 Employment Reports; 52.225-9 Buy American Act; 52.232-34 Payment by Electronic Funds Transfer; 52.236-7 Permits and Responsibilities; 52.236-12 Cleaning up; 52.246-12 Inspection; 52-249-1 Termination for Convenience. The contractor shall extend to the Government the full coverage of any standard commercial warranty normally offered in a similar commercial sale, provided such warranty is available at no additional cost to the Government. Acceptance of the standard commercial warranty does not waive the Government?s rights under the Inspection clause nor does it limit the Governments?s rights with regard to the other terms and conditions of this contract. In the event of a conflict, the terms and conditions of the contract shall take precedence over the standard commercial warranty. The contractor shall provide a copy of its standard commercial warranty (if applicable) with its response. Responses are 15 days from the date this notice is published in the FedBizOps by 4:00 PM local time, March 7, 2005 at USDA Agricultural Research Service, 2316 Rainwater Rd, Tifton, GA 31794 (or POB 748, Tifton, GA 31793). POC Tom Maze, Contract Specialist, 229-386-3496 or FAX 229-386-7225.
- Place of Performance
- Address: National Peanut Res Lab, 1011 Forrester Drive. S. E., Dawson, GA
- Zip Code: 39842
- Zip Code: 39842
- Record
- SN00754726-W 20050220/050218212458 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
(may not be valid after Archive Date)
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