SOLICITATION NOTICE
95 -- (2) 36-inch Gate Valve Actuators - Expect to issue solicitation with 3 DRAWINGS on/about 18-July-2008
- Notice Date
- 7/16/2008
- Notice Type
- Presolicitation
- NAICS
- 333995
— Fluid Power Cylinder and Actuator Manufacturing
- Contracting Office
- Department of the Army, U.S. Army Corps of Engineers, US Army Corps of Engineers, Pittsburgh District, US Army Corps of Engineers, Pittsburgh District, 1000 Liberty Avenue, W.S. Moorhead Federal Building, 21st Floor, Pittsburgh, PA 15222-4186
- ZIP Code
- 15222-4186
- Solicitation Number
- W911WN08T0016
- Response Due
- 7/25/2008
- Archive Date
- 9/23/2008
- Point of Contact
- Sue A. Gitto, 412-395-7114
- Small Business Set-Aside
- Total Small Business
- Description
- 36-INCH Gate Valve Actuator Part 1 General 1.1 Summary Two (2) new gate valve actuators are to be furnished under this contract. The new actuators are intended to replace existing gate valve actuators that are on top of 36 INCH gate valves. The existing gate valves are provided with bevel gear floor stands and hand cranks for manual operation. Referenced attached drawing 5526P, 6062P-A and 6064P. 1.2 References The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only. National Electrical Manufacturers Association (NEMA)Current Applicable Standards Underwriters Laboratory, Inc. (UL) Current Applicable Standards 1.3 Payment Payment for the valve actuators will be made at the contract price as listed in the price schedule. This payment shall include furnishing and delivery of the actuators to our Neville Island, PA facility. Payment shall include the manufacturers service for site supervision at Tionesta Lake, PA for the installation, start-up, and testing of the new actuators. Payment shall include all other materials, and incidentals necessary to complete the work as specified and as shown. 1.4 General Requirements 1.4.1 Standard Products Materials and equipment to be supplied under this contract shall be the standard products of a manufacturer regularly engaged in the manufacture of such products and shall essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening. Items of the same classification shall be identical, including equipment, assemblies, parts, and components. Equipment shall be supported by a service organization that is, in the opinion of the Contracting Officer, reasonably convenient to the site. 1.4.2 Nameplates The manufacturers name, address, and catalog number shall be permanently displayed on a plate securely attached to each item of equipment. Electrical equipment listed in UL-02 shall have UL label or registration plate securely attached to the item of equipment. 1.4.3 Verification of Dimensions The Contractor shall become familiar with all details of the work, verify all dimensions in the field, and shall advise the Contracting Officer of any discrepancy before performing the work. 1.4.4 Prevention of Corrosion Fasteners and nameplates shall be corrosion-resistant materials. Surfaces of products shall be given a corrosion-protective coating at the factory. 1.5 Submittals Government approval is required for submittals with a -GA- designation; submittals having a -FIO- designation are for information only. 1. Data Spare Parts; GA Spare parts data shall be provided. The data shall include a list of parts and supplies, including lubricants, current unit prices, sources of supply, and a list of the parts recommended by the manufacturer to be replaced on a 1 and 3 year basis. Materials; GA The Contractor shall submit data, catalog cuts, and other literature that confirms the equipment supplied conforms to these specifications. 2. Drawings Actuator; GA Drawings; manufacturers descriptive and technical literature; catalog cuts; performance charts and curves; and installation instructions shall be submitted for approval. The electrical drawings shall contain complete wiring and schematic diagrams and other details required to demonstrate that the system will properly function as intended. The drawings for the actuator shall include its mounting, adaptors, motor details, controls, hand wheel location, declutch lever and other components. The drawing will include clearances required for maintenance and operation. Drawings for the remote control enclosures shall contain complete wiring and schematic diagrams, catalog cuts, and assembly drawings of each enclosure. 3. Instructions System Operation; FIO Three (3) complete copies of operating instructions outlining the step-by-step procedures required for system start-up, operation, and shutdown. The instructions shall include the manufacturers name, model number, service manual, parts list, and brief description of all their basic operating features. 4. Repair Requirements; FIO Three (3) complete copies shall be included of the maintenance instructions listing routine maintenance procedures, possible breakdowns and repairs, and troubleshooting guides. The instructions shall include equipment layout and simplified wiring and control diagrams of the system as installed. 6. Reports Test reports in booklet form showing field tests performed to adjust each component and field tests performed to prove compliance with the specified performance criteria, upon completion and testing of the installed system. Each test report shall indicate the final position of any system controls. 1.6 Delivery and Storage Equipment, delivered and placed in storage shall be stored with protection from the weather, humidity, and temperature variation, dirt and dust, or other contaminants. Part 2. Products 2.1 Multi-Turn Electric Valve Actuators 2.1.1 General Actuator shall be multi-turn output for operation of the existing 36-inch gate valve as manufactured by Ludlow Valve Manufacturing Company, Troy, NY. The existing gate valves are non-rising stem type, 125 pound working pressure, parallel double disc, flanged ends, iron body, bronze mounted with bronze stems. The valve operator shall be set to turn to the existing open and closed directions. The contractor shall verify the direction of travel to open and close on the existing equipment. Operating time in either opening or closing direction shall be approximately 5.5 minutes against a 120-foot head with a safety factor of 2. The basic actuator shall include the motor, power gearing, limit switches, torque switches, hand wheel and declutch lever, terminals for motor and control power, and thrust carrying nut. The actuators shall be provided with a mechanical gauge showing gate opening positions in 0,.,, and full open. The actuator shall be supplied with an integral DeviceNet communications interface board for connection to a remote PLC based control system. The actuator and gearbox shall be similar and equal to an Auma model SA14.5- 108B/GK25.2-5,6A. 2.1.2 Power and Integral Actuator Controls Motor for each actuator shall be 230 volts, 3 Phase, 60 Hertz. The integral control unit shall consist of full voltage reversing contactors mechanically and electrically interlocked, fused control voltage transformer (115 VAC), motor overloads, open/stop/close push buttons, local/off/remote selector switch, and open and close indicator lights, and position indication. The contactors shall be of ample size for the motors, which they control. Internal control circuitry shall also include phase discriminators to protect against incorrect or incomplete power connection and a monitor relay to signal loss of control power phase discriminator trip or thermal switch trip. Remote signals will be accepted by the actuator through optical isolators or interposing relays. All actuator settings and parameters shall be setup using a non-intrusive method. 2.1.3 Remote Actuator Control Station Enclosure One (1) remote actuator control station enclosure to remotely control both actuators shall be provided. The enclosure shall be installed on the wall in the top floor of Control Tower. The control station enclosure shall be made from 14 gauge steel and shall be rated NEMA 4. The wall mounted enclosure shall be 16-INCH high, 14-INCH wide, and 6-INCH deep, similar and/or equal to a Hoffman A-1614CHNF enclosure. A back panel for mounting components shall be provided similar and/or equal to Hoffman A-16P14 panel. Terminal blocks shall be provided for terminating external connections to the control elements. Panel mounted controls for each actuator shall consist of an Open, Stop, and Close momentary pushbutton for actuator control, one red -Open- indicator to indicate the fully open position, one green -Closed- indicator to indicate the fully closed position, and one amber -Remote- indicator. The amber -Remote- indicator shall only be illuminated when the local/remote switch on the actuator is placed in the remote position. All pushbuttons and indicators shall be 30.5mm rated NEMA Type 4/13, watertight/ oiltight and supplied with an engraved legend plate. One digital display shall be supplied for each actuator to indicate the -Percent Open-. The digital display shall be calibrated to read 0% when the actuator is fully closed and 100% when the actuator is fully open. 2.1.4 Actuator Enclosures The actuator enclosures shall be NEMA 6, watertight, and submersible to 20-feet of water for a period of 72 hours. All covers, machined interfaces and entries, shall be sealed by means of O-rings. Terminal compartment and limit switch compartment covers shall be fastened to the gear housing by stainless steel bolts which are -captured- to prevent loss when covers are removed. The terminal compartment enclosure shall be separate from the limit switch compartment. Gear housing and all load bearing enclosures shall be manufactured of cast iron. Non-load bearing enclosures and covers may be manufactured of aluminum, cast iron or steel. 2.1.5 Actuator Motors The drive motor shall be specifically designed for actuator service and shall be characterized by high starting torque, low stall torque, high running torque and low inertia. The motor shall be capable of starting against the rated load in either open or closed direction when voltage to the terminal is plus or minus 10 percent of the nameplate rating. The motor shall be a squirrel cage type induction motor with Class F tropicalized insulation. Thermal overload protection shall be by means of three thermal switches imbedded in the windings 120 degrees apart to ensure safe motor shut-down during periods of excessive running time. The motor for the actuator shall be appropriately sized for the application. The motor housing shall be one-piece cast aluminum design, totally enclosed non-ventilated with cooling fins to dissipate heat. The housing shall be one piece, cast aluminum, and sealed from the lubricant filled gear case to allow removal without loss of lubricant. The motor shall utilize a plug and socket connector to facilitate easy removal if required. 2.1.6 Hand Wheel Each actuator shall include a side-mounted hand wheel and for manual operation. The rim pull (effort) shall not exceed 30 pounds for rundown, or 80 pounds for seating or unseating the valve. The hand wheel shall be provided with provisions for padlocking to prevent unauthorized operation. The unit shall be responsive to manual operation at all times except when being electrically operated. The hand wheel shall not rotate during motor operation. A positive declutch mechanism will engage the hand wheel when required. A fused or inoperable motor shall not prevent manual operation of the actuator. Motor operation shall always take precedence over manual operation. When in manual operation, the unit shall automatically return on the motor position until hand wheel operation is desired. The direction for operation of the valve shall be marked on the hand wheel with an arrow and English text. Markings shall be cast into the hand wheel or constructed of durable labels. 2.1.7 Gearing All worm gears are to be bronze with hardened alloy steel worm shaft. Limit switch and torque switch drive gearing shall be bronze. 2.1.8 Thrust Drive Actuators shall have a separate drive nut/thrust bearing assembly mounted to the base of the actuator. This allows the valve to remain in service with the actuator removed. Stem nut shall be of high tensile bronze, or other material compatible with the valve stem. Grease fittings will be furnished to allow periodic lubrication of drive nut and thrust bearings. 2.1.9 Travel Limit Switches Travel limit switches will be provided to de-energize the motor control circuit when the actuator reaches the limits of travel in the open and close directions and provide end of travel position indication. Limit switches and the limit switch drive will be an integral part of the actuator and located in a compartment separate from the electrical terminal compartment. There shall be no open electrical terminations within the limit switch compartment. The limit switch drive will be of the counter gear type and -in-step- with the actuator output drive at all times in either the electrical or manual modes of operation. A minimum of four (4) -quick-break- contacts (two normally closed) shall be incorporated in each limit switch. The electrical contacts shall be silver plated and adequately rated to carry the control current. The self contained limit switch assembly shall be rated NEMA 4 minimum to prevent the entrance of moisture and retard contact oxidation. -Sliding- contacts will not be approved. 2.1.10 Torque Switches Torque switches shall be provided within the limit switch compartments to de-energize the motor control circuit when the valve encounters an obstruction during travel. Actuators shall have two torque switches; one for the opening direction and one for the closing direction. Each switch shall have a minimum of one normally open and one normally closed -quick break- contacts. -Sliding- contacts will not be approved. The torque switches shall be mechanically operated and directly readable, and settable in units of torque (ft-lbs) without the aid of charts or curves. Torque switches shall be calibrated prior to assembly to the valve. Torque switches shall be rated to carry the control current. Contacts shall be silver plated. Torque switch assemblies shall be rated NEMA 4 to prevent entry of moisture and retard oxidation of contacts. The torque switch drive and limit switch drive shall be incorporated in a single unit, which can be removed from the actuator for replacement of the limit or torque switches without disrupting the torque or limit calibration set points. 2.1.11 Heater A 24 volt space heater shall be installed in the limit switch compartment to prevent condensation from moisture laden air. The space heater shall automatically adjust output to maintain temperature. 2.1.12 Position Indicators 2.1.12.1 Local and Remote Position Indicators The position indicator shall provide a continuous reading of valve position between the fully open and fully closed position. A position indicator shall be supplied with each actuator. It shall be a digital read-out for non-intrusive programming of limit and torque switch parameters and position signal. A position transmitter for remote position readout shall be included. All indicators shall operate when the actuator is in either the electric or manual mode. A mechanical dial position indicator shall be provided for position information in the event power cannot be provided and the actuator is operated via the hand wheel. The mechanical indicator should show openings of 0,,, and full open. 2.1.13 Electrical Terminal Housing Electrical terminals are to be housed in a compartment that is isolated from the limit switch/torque switch compartment. All power and control voltage terminations shall be made with plug and socket connectors such that removal of the terminal compartment cover simultaneously disconnects all voltage sources from the actuator. A minimum of two 3/4-inch and one 1/2-inch cable entries shall be furnished. A double collar seal shall be provided to prevent any water penetration between the terminal housing the lower control unit. 2.1.14 Adapters The actuator manufacturers representative shall provide adaptor plates and stainless steel fasteners as required to adapt new actuator to existing gate stand. The existing floor stands shall be reused and the existing bevel gears, hand crank and base cap shall be removed. Any modifications or adapters required to connect the existing valve stem extension to the new actuator drive assembly shall be provided as required. Part 3 Execution 3.1 Delivery The new actuators shall be delivered fully crated to the following location: Pittsburgh Engineer Warehouse and Repair Shops 3500 Grand Avenue, Neville Island Pittsburgh, PA 15225 Note: Shipments are received at PEWARS between 8:00 A.M. and 3:00 P.M., Monday through Friday, excluding federal holidays. 3.2 Field Tests 3.2.1 Electric Valve Actuator Tests The manufacturers representative shall supervise and inspect the installation and wiring of the actuators and remote control station enclosures. The manufacturers representative shall make all necessary adjustments of the torque and limit switches for proper operation. The valves actuators shall be operated three (3) complete cycles from each operating location to demonstrate proper operation. 3.2.2 Final Acceptance Tests The manufacturers representative shall supervise the final acceptance tests on the valve actuator for approval. Each deficiency or maladjustment disclosed by the tests shall be corrected immediately and the test repeated until satisfactory results are obtained. No subsequent tests will be permitted until all preceding tests have been completed satisfactory. 3.3 Field Training A field-training course shall be provided for designated operating staff members. Training shall be provided for a total period of four (4) hours of normal working time and shall start after all valves are installed and functionally complete but prior to final acceptance tests. Field training shall cover items contained in the Operation and Maintenance Manuals. 3.4 Painting All exposed exterior surfaces of new valve actuators, adapters, and equipment, etc., shall be shop primed and painted with the manufacturers standard coating for exterior exposure. Insofar as practicable, the complete coating system shall be applied to individual components and items before assembly to ensure complete coverage and maximum protection against corrosion. 3.5 Touch-Up Paint Contractor shall furnish one pint of finish paint system for touch-up painting.
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- Place of Performance
- Address: US Army Corps of Engineers, PEWARS 3500 Grand Avenue Pittsburgh PA
- Zip Code: 15225-1584
- Zip Code: 15225-1584
- Record
- SN01615797-W 20080718/080716222024-12c4a9d3ad67c6204e79b801f54b0d79 (fbodaily.com)
- Source
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